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学者姓名:高琰昕
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Environmental concerns are driving the development of eco-friendly and effective methods for contaminant monitoring and remediation. In this study, a lanthanide porphyrin-based MOF with dual fluorescence sensing and photocatalytic properties was synthesized and applied for the detection and combined removal of Cr(VI) and ciprofloxacin (CIP). Using different excitation wavelengths, the material exhibited selective detection of Cr(VI) via fluorescence quenching and CIP through fluorescence enhancement. The variation in color intensity of Tb-MOF on 3D EEM spectra enabled simultaneous detection of both contaminants. Additionally, Tb-MOF demonstrated a synergistic removal effect, achieving over 95% removal rates of Cr(VI) and CIP within 90 min, with consistent sensing and catalytic performance across four cycles. Mechanistic investigations revealed that (i) strong coordination between Tb3+ and CIP altered the surface potential of Tb-MOF, enhancing Cr(VI) adsorption; (ii) as an efficient electron acceptor, Cr(VI) promoted electron transfer and its reduction to Cr(III); and (iii) superoxide radicals generated via a type I mechanism played a key role in CIP degradation. This research underscores the potential of Tb-MOF as a multifunctional platform for simultaneous detection and synergistic remediation of mixed pollutants.
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GB/T 7714 | Duan, Longying , Cheng, Ting , Zhu, Yanyue et al. Lanthanide-Porphyrin MOF as a Multifunctional Platform for Detection and Integrated Elimination of Cr(VI) and Ciprofloxacin [J]. | INORGANIC CHEMISTRY , 2025 , 64 (4) : 1983-1993 . |
MLA | Duan, Longying et al. "Lanthanide-Porphyrin MOF as a Multifunctional Platform for Detection and Integrated Elimination of Cr(VI) and Ciprofloxacin" . | INORGANIC CHEMISTRY 64 . 4 (2025) : 1983-1993 . |
APA | Duan, Longying , Cheng, Ting , Zhu, Yanyue , Wang, Yuping , Gao, Yanxin , Bi, Jinhong . Lanthanide-Porphyrin MOF as a Multifunctional Platform for Detection and Integrated Elimination of Cr(VI) and Ciprofloxacin . | INORGANIC CHEMISTRY , 2025 , 64 (4) , 1983-1993 . |
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The adsorptive removal of typical pharmaceuticals, carbamazepine (CBZ) and tetracycline (TC), was investigated with four zirconium-based porphyrinic metal-organic frameworks (MOFs) (PCN-221, PCN-222, PCN-223, and PCN-224). For both CBZ and TC, the adsorption capacities of the PCNs were ranked in the following order: PCN-221 < PCN-223 < PCN-224 < PCN-222. Notably, this order aligns with the BET surface areas of the PCNs. Cage-type PCN-221 showed a lower adsorption capacity than the other three channel-type MOFs due to its small apertures, which were not conducive to the activation of PCN-221 and space utilization. The amount of adsorption was proportional to the cumulative pore volume in PCNs with a width larger than that of the CBZ/TC molecule. Therefore, with high pore volume and large one-dimensional channels formed by ordered linker vacancies, PCN-222 was the best adsorbent in this work. According to the Langmuir model, PCN-222 exhibited exceptional adsorption capacities for CBZ and TC, reaching 305 mg/g and 280 mg/g, respectively. Additionally, the mechanisms for CBZ removal involved hydrogen bonding and pi-pi interactions/stacking, while electrostatic interactions, hydrogen bonding, and pi-pi interactions/stacking played crucial roles in TC adsorption onto MOFs. These findings establish a profound comprehension of the interplay between pore structure and performance, providing helpful guidance for designing MOFs to remove emerging contaminants effectively.
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Adsorption Adsorption Mechanism Mechanism MOFs MOFs PPCPs PPCPs Structure Structure
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GB/T 7714 | Wu, Xiaoyu , Gao, Yanxin , Bi, Jinhong . Understanding the structure-dependent adsorption behavior of four zirconium-based porphyrinic MOFs for the removal of pharmaceuticals [J]. | MICROPOROUS AND MESOPOROUS MATERIALS , 2024 , 363 . |
MLA | Wu, Xiaoyu et al. "Understanding the structure-dependent adsorption behavior of four zirconium-based porphyrinic MOFs for the removal of pharmaceuticals" . | MICROPOROUS AND MESOPOROUS MATERIALS 363 (2024) . |
APA | Wu, Xiaoyu , Gao, Yanxin , Bi, Jinhong . Understanding the structure-dependent adsorption behavior of four zirconium-based porphyrinic MOFs for the removal of pharmaceuticals . | MICROPOROUS AND MESOPOROUS MATERIALS , 2024 , 363 . |
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Thousands of chemicals have been released into the environment in recent decades. The presence of emerging contaminants (ECs) in water has emerged as a pressing concern. Adsorption is a viable solution for the removal of ECs. Metal-organic frameworks (MOFs) have shown great potential as efficient adsorbents, but their dispersed powder form limits their practical applications. Recently, researchers have developed various separable MOF-based adsorbents to improve their recyclability. The purpose of this review is to summarize the latest developments in the construction of separable MOF-based adsorbents and their applications in adsorbing ECs. The construction strategies for separable MOFs are classified into four categories: magnetic MOFs, MOF-fiber composites, MOF gels, and binder-assisted shaping. Typical emerging contaminants include pesticides, pharmaceuticals and personal care products, and endocrine-disrupting compounds. The adsorption performance of different materials is evaluated based on the results of static and dynamic adsorption experiments. Additionally, the regeneration methods of MOF-based adsorbents are discussed in detail to facilitate effective recycling and reuse. Finally, challenges and potential future research opportunities are proposed, including reducing performance losses during the shaping process, developing assessment systems based on dynamic purification and real polluted water, optimizing regeneration methods, designing multifunctional MOFs, and low-cost, large-scale synthesis of MOFs.
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GB/T 7714 | Gao, Yanxin , Zheng, Lisi , Duan, Longying et al. Separable Metal-Organic Framework-Based Materials for the Adsorption of Emerging Contaminants [J]. | LANGMUIR , 2024 , 40 (30) : 15365-15388 . |
MLA | Gao, Yanxin et al. "Separable Metal-Organic Framework-Based Materials for the Adsorption of Emerging Contaminants" . | LANGMUIR 40 . 30 (2024) : 15365-15388 . |
APA | Gao, Yanxin , Zheng, Lisi , Duan, Longying , Bi, Jinhong . Separable Metal-Organic Framework-Based Materials for the Adsorption of Emerging Contaminants . | LANGMUIR , 2024 , 40 (30) , 15365-15388 . |
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The treatment of emerging contaminants is essential but challenging. Herein, a novel MOF/PAN fibrous composite (TCPP@UiO-66/PAN) was synthesized and used as a self-cleaning membrane for the efficient removal of a typical emerging contaminant, diclofenac sodium (DF). The introduction of the secondary linker tetra(4carboxyphenyl)porphyrin (TCPP) served to expand the pores and enhance its photocatalytic activity. TCPP@UiO-66/PAN shows higher adsorption capacity and initial adsorption rate than UiO-66/PAN. The maximum adsorption capacity of DF on TCPP@UiO-66/PAN reached 202 mg/g by Langmuir model. The DF adsorption mechanism involves the pi-pi/anion-pi interaction, Lewis acid-base interaction, and hydrogen bonding. Based on the dynamic filtration experiment, TCPP@UiO-66/PAN exhibited a remarkable treatment capacity for DF-contaminated water, measuring 3.75 x 104 kg/kg. Given its fibrous membrane structure, TCPP@UiO-66/ PAN could be easily separated from water and reused. In-situ photo-regeneration emerged as a highly effective method for regenerating TCPP@UiO-66/PAN after reaching adsorption saturation, with over 95 % DF degradation achieved under sunlight irradiation. The decomposition of DF primarily resulted from the generation of h+ and 1O2. Additionally, TCPP@UiO-66/PAN exhibited notable antibacterial properties when exposed to visible light. In vitro cytotoxicity assessments further confirmed the safety of these MOF/PAN composites. Combining the advantages of hybrid-linker strategy and fibrous composite, this work provided new insight into constructing MOF-based functional material for wastewater purification.
Keyword :
Adsorption Adsorption Emerging contaminants Emerging contaminants Fibrous composites Fibrous composites Metal -organic frameworks Metal -organic frameworks Self-cleaning Self-cleaning
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GB/T 7714 | Gao, Yanxin , Cheng, Ting , Zhao, Fankang et al. A hybrid linker-MOF fibrous composite for efficient diclofenac removal and self-cleaning [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 337 . |
MLA | Gao, Yanxin et al. "A hybrid linker-MOF fibrous composite for efficient diclofenac removal and self-cleaning" . | SEPARATION AND PURIFICATION TECHNOLOGY 337 (2024) . |
APA | Gao, Yanxin , Cheng, Ting , Zhao, Fankang , Huang, Guocheng , Bi, Jinhong . A hybrid linker-MOF fibrous composite for efficient diclofenac removal and self-cleaning . | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 337 . |
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The semiconductor-insulator heterostructure, characterized by outstanding economic-efficiency and catalytic activity, represents a promising photocatalyst for practical pollutants degradation. However, achieving energy band matching between semiconductors and insulators remains a challenge. In this study, we meticulously designed and synthesized a band-matched semiconductor-insulator photocatalysts (AgI-BaCO3), leveraging the in-situ nucleation of ultrafine AgI nanoparticles on BaCO3 surface. The finely crafted heterostructure notably enhanced degradation efficiency of tetracycline over both pure AgI and BaCO3, demonstrating a remarkable pseudo-first-order kinetic rate constant that surpassed them by 27.2 and 33.5 times, respectively. The density functional theory calculations uncovered that the intense covalent interaction between AgI and BaCO3 established a specific channel for interfacial charge carriers. The generated CO3 center dot- radicals as the main active species markedly expedited the removal of antibiotics. Furthermore, the catalysts demonstrated robust activity in real wastewater and surface water. This work supplies a novel reference for constructing insulator-based photocatalysts and elucidates its potential application in actual aquatic environments.
Keyword :
Antibiotics Antibiotics Heterostructure Heterostructure Visible-light photocatalysis Visible-light photocatalysis
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GB/T 7714 | Yu, Mingfei , Kong, Xiangyu , Luo, Jianhui et al. Carbonate radicals mediated catalytic degradation of antibiotics over earth-abundant BaCO3-based system: Performance, mechanism and calculation [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2024 , 1004 . |
MLA | Yu, Mingfei et al. "Carbonate radicals mediated catalytic degradation of antibiotics over earth-abundant BaCO3-based system: Performance, mechanism and calculation" . | JOURNAL OF ALLOYS AND COMPOUNDS 1004 (2024) . |
APA | Yu, Mingfei , Kong, Xiangyu , Luo, Jianhui , Zhou, Hanqiang , Gao, Yanxin , Zheng, Chenghui et al. Carbonate radicals mediated catalytic degradation of antibiotics over earth-abundant BaCO3-based system: Performance, mechanism and calculation . | JOURNAL OF ALLOYS AND COMPOUNDS , 2024 , 1004 . |
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The development of innovative multi-emission sensors for the rapid and accurate detection of contaminants is both vital and challenging. In this study, utilizing two rigid ligands (H3ICA and H4BTEC), a series of water-stable bimetallic organic frameworks (EuTb-MOFs) were synthesized. Luminescent investigations have revealed that EuTb-MOF-1 exhibits prominent multiple emission peaks, attributed to the distinctive fluorescence characteristics of Eu(III) and Tb(III) ions. Therefore, EuTb-MOF-1 efficiently recognized various metal ions and pharmaceutical compounds through 2D decoded maps. Fe3+ and Pb2+ exhibited significant quenching effects on the luminescence of EuTb-MOF-1, which were attributed to the internal filtering effect and the interaction between Lewis basic sites within EuTb-MOF-1 and Pb2+ ions, respectively. Furthermore, EuTb-MOF-1 demonstrated high sensitivity to sulfonamide antibiotics, with detection limits of 0.037 mu M for SMZ and 0.041 mu M for SDZ, respectively. In addition, EuTb-MOF-1 was immobilized to prepare MOF-based test strips, enabling direct visual detection of sulfonamides as a portable sensor. With excellent water stability, multi-responsive recognition capabilities, and high sensitivity to specific analytes, EuTb-MOF-1 is a promising candidate for environmental contaminant detection in aquatic systems.
Keyword :
Lanthanide Lanthanide Luminescent sensor Luminescent sensor Metal ions Metal ions Metal-organic frameworks Metal-organic frameworks Pharmaceuticals Pharmaceuticals
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GB/T 7714 | Gao, Yanxin , Zhu, Yanyue , Wang, Yuping et al. Water-Stable Ln-MOF as a multi-emitting luminescent sensor for the detection of metal ions and pharmaceuticals [J]. | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY , 2024 , 323 . |
MLA | Gao, Yanxin et al. "Water-Stable Ln-MOF as a multi-emitting luminescent sensor for the detection of metal ions and pharmaceuticals" . | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 323 (2024) . |
APA | Gao, Yanxin , Zhu, Yanyue , Wang, Yuping , Bi, Jinhong . Water-Stable Ln-MOF as a multi-emitting luminescent sensor for the detection of metal ions and pharmaceuticals . | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY , 2024 , 323 . |
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The construction of step-scheme (S-scheme) heterojunctions has emerged as a widely adopted strategy for achieving photocatalytic hydrogen peroxide (H2O2) generation. In this study, we employed an approach to deposit indium sulfide (In2S3) onto a Schiff-base covalent organic framework (COF), namely TpMA, for H2O2 photosynthesis and its sterilization application. The optimized photocatalyst, 10%TpMA/In2S3, exhibited remarkable photocatalytic performance, yielding a substantial H2O2 output of 311.07 mu mol/L. A series of advanced instrumental analyses and density functional theory (DFT) results indicated that the establishment of the S-scheme heterojunction played a pivotal role in facilitating efficient charge carrier transfer and separation. Specifically, the formation of a built-in electric field was probed and quantified. Furthermore, the H2O2 exhibited the capability to undergo direct catalysis by Fe(II), which substantially facilitated the inactivation of pathogenic bacteria. This work unveils insight into the COF-based S-scheme photocatalysts and offers a sustainable approach for environmentally friendly H2O2 production for sterilization purposes.
Keyword :
Built-in Electric Field Built-in Electric Field Covalent organic frameworks Covalent organic frameworks In situ oS In situ oS S-scheme heterojunction S-scheme heterojunction
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GB/T 7714 | Chen, Hanye , Gao, Shengjie , Huang, Guocheng et al. Built-in electric field mediated S-scheme charge migration in COF/In2S3 heterojunction for boosting H2O2 photosynthesis and sterilization [J]. | APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY , 2023 , 343 . |
MLA | Chen, Hanye et al. "Built-in electric field mediated S-scheme charge migration in COF/In2S3 heterojunction for boosting H2O2 photosynthesis and sterilization" . | APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY 343 (2023) . |
APA | Chen, Hanye , Gao, Shengjie , Huang, Guocheng , Chen, Qiaoshan , Gao, Yanxin , Bi, Jinhong . Built-in electric field mediated S-scheme charge migration in COF/In2S3 heterojunction for boosting H2O2 photosynthesis and sterilization . | APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY , 2023 , 343 . |
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Artificial photosynthesis is considered a promising strategy to mitigate environmental issues and energy crises. Herein, one-dimensional oxide-semiconductor (TiO2-nanofiber, TNF) and polyarylether-based covalent organic framework (COF-318) were composed to form a visible-light responsive heterojunction (COF-318/TNF) for artificial photosynthesis by simultaneously triggering CO2 reduction and H2O oxidation. Without additional sacrificial agents, photosensitizers or cocatalysts, the optimal sample COF-318/TNF-15 exhibited CO2-to-CO conversion efficiency of 70.1 +/- 0.7 mu mol.g(- 1).h(-1), 12.7 times higher than that of COF-318. The molar ratio of produced CO to O2 was about 2:1, suggesting H2O was the electron donor in the photocatalytic process. Pho-toelectrochemical measurements and time-resolved transient absorption spectra illustrated the high separation/ transfer efficiency of photo-generated charges in COF-318/TNF-15, which was attributed to the construction of heterojunction and the specific one-dimensional property of TiO2 nanofibers. During the CO2 photoreduction, HCOO* was detected as the key intermediate for CO production according to the in-situ FT-IR analysis. This work provides a new route for the rational design of organic-inorganic heterogeneous photocatalysts for visible-light -driven CO2 reduction.
Keyword :
Artificial photosynthesis Artificial photosynthesis CO2 reduction CO2 reduction Polyarylether-COFs Polyarylether-COFs TiO2 nanofibers TiO2 nanofibers
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GB/T 7714 | Gao, Yanxin , Tan, Zunkun , Yang, Rong et al. Integrating polyarylether-COFs with TiO2 nanofibers for enhanced visible-light-driven CO2 reduction in artificial photosynthesis [J]. | APPLIED SURFACE SCIENCE , 2022 , 605 . |
MLA | Gao, Yanxin et al. "Integrating polyarylether-COFs with TiO2 nanofibers for enhanced visible-light-driven CO2 reduction in artificial photosynthesis" . | APPLIED SURFACE SCIENCE 605 (2022) . |
APA | Gao, Yanxin , Tan, Zunkun , Yang, Rong , Huang, Guocheng , Bi, Jinhong . Integrating polyarylether-COFs with TiO2 nanofibers for enhanced visible-light-driven CO2 reduction in artificial photosynthesis . | APPLIED SURFACE SCIENCE , 2022 , 605 . |
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The development of mixed-linker metal-organic frameworks (MOFs) is an efficient strategy to improve the performance of MOFs. Herein, we successfully integrate tetrakis(4-carboxyphenyl)porphyrin (TCPP) into different Zr-MOFs via a facile one-pot solvothermal synthesis while preserving the integrity of their frameworks. The functional groups, length of primary linkers, and the inner pore structure significantly affected the properties of the synthesized TCPP@MOFs, such as surface area, average pore size, and O-1(2) productivity. Among them, TCPP@PCN-777 demonstrated the largest surface area (2386 cm(2)/g, as measured by N-2 uptake) and the highest O-1(2) generation rate (1.15 h(-1), [O-1(2)](ss) = 2.66 X 10(-12) M) under irradiation. The TCPP loading was also shown to affect the crystal phase, morphology, surface area, and photochemical properties of the synthesized MOFs. Therefore, TCPP@PCN-777s with various TCPP loadings were synthesized to investigate the optimum loading. The optimized TCPP@MOF, TCPP@PCN-777-30, was evaluated for its removal of model contaminant ranitidine (RND) through both adsorption and photodegradation. TCPP@PCN-777-30 showed a higher adsorption capacity toward RND than both the parent MOF (PCN-777) and commercially available activated carbon, and effectively degraded RND in aqueous solution (>99% photodegradation in 1 h). With irradiation, TCPP@PCN-777-30 showed a minimal loss in adsorption efficiency over four consecutive treatment cycles, confirming the reusability of the material enabled through the incorporation of TCPP into the MOF structure. This work not only developed an efficient multifunctional material for environmental remediation but also forwarded knowledge on the effect of linker environment (i.e., functional groups, framework structure, and linker ratio) on the properties of TCPP@MOFs to guide future research on mixed-linker MOFs.
Keyword :
emerging contaminants emerging contaminants mixed-linker mixed-linker MOFs MOFs photochemistry photochemistry porphyrin porphyrin
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GB/T 7714 | Gao, Yanxin , Suh, Min-Jeong , Kim, Jae-Hong et al. Imparting Multifunctionality in Zr-MOFs Using the One-Pot Mixed-Linker Strategy: The Effect of Linker Environment and Enhanced Pollutant Removal [J]. | ACS APPLIED MATERIALS & INTERFACES , 2022 . |
MLA | Gao, Yanxin et al. "Imparting Multifunctionality in Zr-MOFs Using the One-Pot Mixed-Linker Strategy: The Effect of Linker Environment and Enhanced Pollutant Removal" . | ACS APPLIED MATERIALS & INTERFACES (2022) . |
APA | Gao, Yanxin , Suh, Min-Jeong , Kim, Jae-Hong , Yu, Gang . Imparting Multifunctionality in Zr-MOFs Using the One-Pot Mixed-Linker Strategy: The Effect of Linker Environment and Enhanced Pollutant Removal . | ACS APPLIED MATERIALS & INTERFACES , 2022 . |
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Photocatalytic hydrogen production holds great promise for alleviating the energy shortage through effective photo-to-chemical conversion, and the development of visible-light responsive, low-cost and sustainable photocatalysts remains key priority. In this study, carbon quantum dots/covalent triazine-based framework (CQDs/CTF) non-metallic photocatalyst was constructed through a simple impregnation method for photocatalytic H2 evolution. Upon 0.24% CQDs loading, a three-fold enhanced H2 production activity of 102 mmol center dot g-1 center dot h-1 was achieved compared with pristine CTF-1 (34.5 mmol center dot g-1 center dot h-1). Photoluminescence and photoelectrochemical study revealed carbon quantum dots served as the electron libraries, which was conducive to facilitate electron capture and promote the separation of photoinduced electron-hole pairs in CTF-1. Notably, the excitationindependent up-conversion fluorescent characteristics of CQDs endowed the catalysts broadened visible-light response range and higher solar energy utilization efficiency. This study deepens insights into the mechanism of CQDs modification and paves a trustworthy strategy for harvesting visible-light-driven metal-free photocatalyst with highly-active and robust performance.
Keyword :
Carbon quantum dots Carbon quantum dots Covalent triazine-based frameworks Covalent triazine-based frameworks Solar energy conversion Solar energy conversion Visible-light photocatalysis Visible-light photocatalysis Water splitting Water splitting
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GB/T 7714 | Chen, Yueling , Huang, Guocheng , Gao, Yanxin et al. Up-conversion fluorescent carbon quantum dots decorated covalent triazine frameworks as efficient metal-free photocatalyst for hydrogen evolution [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2022 , 47 (14) : 8739-8748 . |
MLA | Chen, Yueling et al. "Up-conversion fluorescent carbon quantum dots decorated covalent triazine frameworks as efficient metal-free photocatalyst for hydrogen evolution" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 47 . 14 (2022) : 8739-8748 . |
APA | Chen, Yueling , Huang, Guocheng , Gao, Yanxin , Chen, Qiaoshan , Bi, Jinhong . Up-conversion fluorescent carbon quantum dots decorated covalent triazine frameworks as efficient metal-free photocatalyst for hydrogen evolution . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2022 , 47 (14) , 8739-8748 . |
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