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学者姓名：阳灿
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Abstract ：
Polymeric carbon nitride (PCN) photocatalysts have the potential to remove NO from ambient air. However, the catalytic performance of PCN is limited by the lack of sufficient active sites to effectively activate molecular oxygen. Herein, we report the construction of photocatalysts consisting of defective-activated-carbon and PCN via amide bond formation. This photocatalyst not only significantly enhances the chemisorption of O2, but also accelerates the activation of molecular oxygen and oxidation of NO by creating a new electron transport pathway. This work provides a new strategy for polymer photocatalysts to promote molecular oxygen activation by constructing close-contact interfaces through amide bonding. © 2024 Elsevier B.V.
Keyword ：
Activated carbon Activated carbon Amides Amides Carbon nitride Carbon nitride Chemical activation Chemical activation Electron transport properties Electron transport properties Molecular oxygen Molecular oxygen Oxidation Oxidation
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| GB/T 7714 | Fang, Zixun , Zhou, Min , Lin, Zheng et al. Amide bonded polymeric carbon nitride for photocatalytic O2 activation and NO oxidation [J]. | Applied Catalysis B: Environmental , 2024 , 353 . |
| MLA | Fang, Zixun et al. "Amide bonded polymeric carbon nitride for photocatalytic O2 activation and NO oxidation" . | Applied Catalysis B: Environmental 353 (2024) . |
| APA | Fang, Zixun , Zhou, Min , Lin, Zheng , Yang, Can , Hou, Yidong , Yu, Jimmy C. et al. Amide bonded polymeric carbon nitride for photocatalytic O2 activation and NO oxidation . | Applied Catalysis B: Environmental , 2024 , 353 . |
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H2S selective catalytic oxidation via photocatalysis is a low-cost and efficient approach. Herein, we modeled a (CoP)4 cluster loaded melon-based carbon nitride to represent experimental cobalt phosphate cocatalyst adsorption on polymeric carbon nitride for revealing the mechanism of H2S selective catalytic oxidation to SO2 via the density functional theory (DFT) calculations. Due to the hydrogen bond effect, the calculated results show that H2S selective oxidation prefers to occur through the quasi Mars-van Krevelen (quasi-MvK) mechanism rather than Langmuir-Hinshelwood (LH) mechanism according to the thermodynamic perspective, in which quasi-MvK mechanism exhibits a favorable limiting potential of 0.26 V. Overall, this work offers a basic understanding for microscopic mechanism of H2S catalytic oxidation.
Keyword ：
Carbon nitride Carbon nitride CoP cluster CoP cluster DFT calculations DFT calculations H 2 S selective oxidation H 2 S selective oxidation
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| GB/T 7714 | Xu, Hongli , Yang, Wanxiang , Yang, Can et al. Unraveling the H2S selective oxidation in cobalt phosphate cluster loaded polymeric carbon nitride [J]. | SURFACES AND INTERFACES , 2024 , 46 . |
| MLA | Xu, Hongli et al. "Unraveling the H2S selective oxidation in cobalt phosphate cluster loaded polymeric carbon nitride" . | SURFACES AND INTERFACES 46 (2024) . |
| APA | Xu, Hongli , Yang, Wanxiang , Yang, Can , Lin, Wei . Unraveling the H2S selective oxidation in cobalt phosphate cluster loaded polymeric carbon nitride . | SURFACES AND INTERFACES , 2024 , 46 . |
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A solid-state laser scanning treatment(SLST) was adopted to synthesize anatase/rutile TiO_2 heterojunction with effective charge carrier separation and high surface adsorption performances for the photodegradation of sulfamethoxazole(SMX). The 1064 nm pulsed fiber laser could in-situ generate rutile zones on the pristine sheet-like anatase crystal enclosed by(001) facets, which could form the well-defined anatase/rutile interface to promote the formation of dominating active species(h~+ and ·OH) on the anatase zones. X-ray absorption fine structure(XAFS) measurements, low-temperature electron paramagnetic resonance(LT-EPR) as well as the density functional theory(DFT) simulation proved that the oxygen vacancies(V_O) could both introduce defective energy states to promote light absorption and enhance the SMX adsorption on anatase zones. Based on the delicately designed micro-zones, the photodegradation efficiency of the optimized catalyst could reach 99.3%, which demonstrated ～7 times higher performance than t...
Keyword ：
Antibiotics remediation Antibiotics remediation Heterojunction Heterojunction Laser treatment Laser treatment Photocatalysis Photocatalysis TiO_2 TiO_2
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| GB/T 7714 | 张诗澜 , 武大鹏 , 阳灿 . Laser-assisted Rapid Synthesis of Anatase/Rutile TiO_2 Heterojunction with Function-specified Micro-zones for the Effective Photo-oxidation of Sulfamethoxazole [C] //第4届分子科学博士后学术年会 . 2024 . |
| MLA | 张诗澜 et al. "Laser-assisted Rapid Synthesis of Anatase/Rutile TiO_2 Heterojunction with Function-specified Micro-zones for the Effective Photo-oxidation of Sulfamethoxazole" 第4届分子科学博士后学术年会 . (2024) . |
| APA | 张诗澜 , 武大鹏 , 阳灿 . Laser-assisted Rapid Synthesis of Anatase/Rutile TiO_2 Heterojunction with Function-specified Micro-zones for the Effective Photo-oxidation of Sulfamethoxazole 第4届分子科学博士后学术年会 . (2024) . |
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Combining enhanced light absorption capacity with improved directly spatial charge separation efficiency remains a challenging issue for the development of efficient photocatalysts. Herein, we present a strategy for developing anti-Z-scheme poly(thiophene-co-3-ethylthiophene)/K+ implanted polymeric carbon nitride (PB-KCN) heterojunctions, which integrates the two crucial factors of light absorption and directly spatial charge separation. The ratio-optimized 20 PB-KCN exhibits remarkable visible-light-driven hydrogen production activity up to 22.86 mmol/h g−1 (∼61.8 times that of KCN) with a recorded apparent quantum yield of 31.34 % under 550 nm irradiation. Notably, it is confirmed that the efficient photogenerated-carrier separation in PB-KCN heterojunctions is mainly attributed to the firstly proved anti-Z-scheme electron transition with the electrons in the HOMO (highest occupied molecular orbital) of PB directly excited to the LUMO (lowest unoccupied molecular orbital) of KCN, resulting in the spatial separation of photogenerated carriers. The proposed anti-Z-scheme heterojunction solves the problem that traditional heterojunctions cannot achieve synchronous enhancement of light absorption and directly spatial charge separation. © 2024 Elsevier B.V.
Keyword ：
Anti-Z-scheme electron transition Anti-Z-scheme electron transition Directly spatial separation of photogenerated carriers Directly spatial separation of photogenerated carriers Hydrogen production Hydrogen production Polymer/polymer heterojunctions Polymer/polymer heterojunctions
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| GB/T 7714 | Li, Y. , Zhang, X. , Zheng, J. et al. Anti-Z-scheme polymer/polymer heterojunctions achieving synchronous enhancement of light absorption and directly spatial charge separation [J]. | Chemical Engineering Journal , 2024 , 497 . |
| MLA | Li, Y. et al. "Anti-Z-scheme polymer/polymer heterojunctions achieving synchronous enhancement of light absorption and directly spatial charge separation" . | Chemical Engineering Journal 497 (2024) . |
| APA | Li, Y. , Zhang, X. , Zheng, J. , Xiao, T. , Fu, Q. , Yang, C. et al. Anti-Z-scheme polymer/polymer heterojunctions achieving synchronous enhancement of light absorption and directly spatial charge separation . | Chemical Engineering Journal , 2024 , 497 . |
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Aerobic photocatalytic oxidation is considered as an efficient and green method to remedy low-concentration H2S pollutants associated with the energy and chemical industries. However, the fabrication of a sulfur-resistant catalyst with good performance is a great challenge because of the poisoning effect of H2S and the difficulty in oxygen (O-2) activation. Herein, a photocatalytic hybrid material composed of chemically stable cobalt phosphide (CoP) and structural base-enriched carbon nitride (CN) was developed for the efficient oxidation of H2S, which could achieve 95% H2S conversion, and its service time could last more than 35 h with over 80% H2S conversion. Reflecting from the characterizations and theoretical simulations, the enhanced H2S conversion was on account that CoP could stimulate the electrons shuttling from the photocatalytic system towards the gaseous O-2, facilitating the production of critical superoxide radical via the O-2 reduction process and accelerating the surface H2S oxidation process. This work provides new insights into the design of a sustainable photocatalytic oxidation system for the treatment of chemically active contaminants through constructing stable interfacial electron transfer channels for prominent O-2 activation.
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| GB/T 7714 | Wang, Jiali , Chen, Biqi , Zeng, Fanghua et al. Boosting oxygen activation by CoP/carbon nitride photocatalyst in low-concentration H2S oxidation [J]. | JOURNAL OF MATERIALS CHEMISTRY A , 2024 , 12 (24) : 14508-14516 . |
| MLA | Wang, Jiali et al. "Boosting oxygen activation by CoP/carbon nitride photocatalyst in low-concentration H2S oxidation" . | JOURNAL OF MATERIALS CHEMISTRY A 12 . 24 (2024) : 14508-14516 . |
| APA | Wang, Jiali , Chen, Biqi , Zeng, Fanghua , Lu, Xue Feng , Hou, Yidong , Lin, Wei et al. Boosting oxygen activation by CoP/carbon nitride photocatalyst in low-concentration H2S oxidation . | JOURNAL OF MATERIALS CHEMISTRY A , 2024 , 12 (24) , 14508-14516 . |
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Effective advancements for H2S removal are desperately expected to meet security and ecological necessities as natural guidelines on H2S emissions. Selective catalytic oxidation, as a green technology, has attracted attention owing to its direct conversion of H2S to S without thermodynamic constraints. Herein, we report a carbon-encapsulated WO3 (C@WO3–300) catalyst with nearly 100 % H2S conversion and 99 % S selectivity. Importantly, it likewise accomplishes noteworthy catalytic stability (over 120 h of continuous operation) and water resistance. Excellent durability may be attributed to the ideal porosity of C@WO3, which facilitates the adsorption and activation of H2S and O2. Additionally, the abundant lone pair electrons of carbon support can optimize the chemical environment of WO3-based catalysts and thereby benefit the O2 activation. This study provides a new avenue for the rational design of efficient and durable catalysts for continuous catalytic oxidative desulfurization. © 2024
Keyword ：
Desulfurization Desulfurization Porous Carbon-Encapsulated WO3 Porous Carbon-Encapsulated WO3 Selective catalytic oxidation Selective catalytic oxidation Water resistance Water resistance
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| GB/T 7714 | Zhang, J. , Zeng, L. , Yang, C. . Tungsten oxide nanoparticles encapsulated by porous carbon for boosting H2S selective oxidation performance [J]. | Surfaces and Interfaces , 2024 , 51 . |
| MLA | Zhang, J. et al. "Tungsten oxide nanoparticles encapsulated by porous carbon for boosting H2S selective oxidation performance" . | Surfaces and Interfaces 51 (2024) . |
| APA | Zhang, J. , Zeng, L. , Yang, C. . Tungsten oxide nanoparticles encapsulated by porous carbon for boosting H2S selective oxidation performance . | Surfaces and Interfaces , 2024 , 51 . |
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Highly crystalline carbon nitride polymers have shown great opportunities in overall water photosplitting; however, their mission in light-driven CO2 conversion remains to be explored. In this work, crystalline carbon nitride (CCN) nanosheets of poly triazine imide (PTI) embedded with melon domains are fabricated by KCl/LiCl-mediated polycondensation of dicyandiamide, the surface of which is subsequently deposited with ultrafine WO3 nanoparticles to construct the CCN/WO3 heterostructure with a S-scheme interface. Systematic characterizations have been conducted to reveal the compositions and structures of the S-scheme CCN/WO3 hybrid, featuring strengthened optical capture, enhanced CO2 adsorption and activation, attractive textural properties, as well as spatial separation and directed movement of light-triggered charge carriers. Under mild conditions, the CCN/WO3 catalyst with optimized composition displays a high photocatalytic activity for reducing CO2 to CO in a rate of 23.0 mu mol/hr ( i.e., 2300 mu mol/(hr center dot g)), which is about 7-fold that of pristine CCN, along with a high CO selectivity of 90.6% against H2 formation. Moreover, it also manifests high stability and fine reusability for the CO2 conversion reaction. The CO2 adsorption and conversion processes on the catalyst are monitored by in-situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), identifying the crucial intermediates of CO2 *-, COOH* and CO*, which integrated with the results of performance evaluation proposes the possible CO2 reduction mechanism. (c) 2023 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
Keyword ：
CO 2 reduction CO 2 reduction Crystalline carbon nitride Crystalline carbon nitride Photocatalysis Photocatalysis S-scheme S-scheme WO3 WO3
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| GB/T 7714 | Chen, Gongjie , Zhou, Ziruo , Li, Bifang et al. S-scheme heterojunction of crystalline carbon nitride nanosheets and ultrafine WO3 nanoparticles for photocatalytic CO2 reduction [J]. | JOURNAL OF ENVIRONMENTAL SCIENCES , 2024 , 140 : 103-112 . |
| MLA | Chen, Gongjie et al. "S-scheme heterojunction of crystalline carbon nitride nanosheets and ultrafine WO3 nanoparticles for photocatalytic CO2 reduction" . | JOURNAL OF ENVIRONMENTAL SCIENCES 140 (2024) : 103-112 . |
| APA | Chen, Gongjie , Zhou, Ziruo , Li, Bifang , Lin, Xiahui , Yang, Can , Fang, Yuanxing et al. S-scheme heterojunction of crystalline carbon nitride nanosheets and ultrafine WO3 nanoparticles for photocatalytic CO2 reduction . | JOURNAL OF ENVIRONMENTAL SCIENCES , 2024 , 140 , 103-112 . |
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The development of catalyst for photocatalytic hydrogen sulfide (H2S) oxidation with excellent efficiency and regeneration properties is a significant challenge. Herein, the pyridine units as bifunctional sites are incorporated in covalent polymers (CPs) by C-N coupling reaction, which exhibit photocatalytic H2S selective oxidation to sulfur conversion (95 %) under visible light in a continuous flow system, more than twice that of the pristine sample (40 %). Meanwhile, the photocatalytic H2S conversion rate had a linear function relationship with pyridinic N content, demonstrating the substantial role of pyridine in photocatalytic H2S oxidation process. According to experimental results, the pyridine unit not only acted as the structural base site to improve the H2S chemisorption, but also served as electron withdrawing unit to construct electron donor-acceptor (D-A) structure with benzene, which optimized the light absorption, charge separation and migration. In addition, series in-situ measurements and electron density difference simulations revealed the significant role of electron D-A structure in H2S adsorption and activation process. By exploring the effect of pyridine unit in CPs on H2S conversion process, this work provides a new idea for the subsequent study of photocatalytic H2S oxidation.
Keyword ：
H 2 S selective oxidation H 2 S selective oxidation Molecule regulation Molecule regulation Photocatalysis Photocatalysis Pyridine functionalized polymers Pyridine functionalized polymers
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| GB/T 7714 | Wang, Wenyan , Zhang, Zhibo , Han, Jinyan et al. Engineering bifunctional sites in covalent polymers for boosting photocatalytic H2S oxidation [J]. | SURFACES AND INTERFACES , 2024 , 48 . |
| MLA | Wang, Wenyan et al. "Engineering bifunctional sites in covalent polymers for boosting photocatalytic H2S oxidation" . | SURFACES AND INTERFACES 48 (2024) . |
| APA | Wang, Wenyan , Zhang, Zhibo , Han, Jinyan , Zhang, Shilan , Xiong, Rui , Sa, Baisheng et al. Engineering bifunctional sites in covalent polymers for boosting photocatalytic H2S oxidation . | SURFACES AND INTERFACES , 2024 , 48 . |
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A solid-state pulsed laser technique was developed to in situ grow arbitrary immobilized catalysts (Fe3O4, CeO2, WO3 etc.) on the inner surface of quartz tube with robust adhering strength. In a case study, anatase/rutile hetero-phase TiO2 film was deposited to serve as immobilized photocatalysts for the effective removal of antibiotics from aqueous environment. The X-ray absorption spectroscopy, low temperature electron paramagnetic resonance and the density functional theory simulation directly confirm a defect-assisted type-II band alignment was established to facilitate the charge transfer at the hereto-interphase. In addition, the oxygen vacancy enriched anatase phase with greater binding energy towards the dissolved oxygen facilitated the [rad]O2– generation. Meanwhile, the rutile phase enriched with Ti3+ could effectively activate the antibiotics to promote the direct h+ mediated oxidation. Such integration of unique atomic vacancies prevent defects from becoming electron-hole recombination centers and consequently extend the lifetime of the photoexcited charge carrier. The degradation mechanism of oxytetracycline was thoroughly examined by ultra-high resolution electrospray time-of-flight mass spectrometry and Fukui function, while the ecological structure–activity relationships program assessed the toxicity of contaminant to the environment. Milewhile, a continuous water treatment apparatus employing the catalytic tubes as reactors was established and demonstrated a ∼ 95 % OTC degradation under the natural sunlight adopting river water as the background. The experimental studies also claimed that ∼ 90 % of the initial activity could be retained after 100 cycles reuse, which permits their great potential for the applicational scenarios. © 2024
Keyword ：
Antibiotics Antibiotics Binding energy Binding energy Catalysts Catalysts Cerium oxide Cerium oxide Charge transfer Charge transfer Degradation Degradation Density functional theory Density functional theory Dissolved oxygen Dissolved oxygen Magnetite Magnetite Mass spectrometry Mass spectrometry Oxide films Oxide films Oxygen vacancies Oxygen vacancies Pulsed lasers Pulsed lasers Quartz Quartz Temperature Temperature Titanium dioxide Titanium dioxide Tungsten compounds Tungsten compounds Water quality Water quality Water treatment Water treatment
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| GB/T 7714 | Song, Yadan , Zhi, Songsong , Wang, Hongju et al. Laser-induced growth of metal oxide films on quartz tubes for photocatalytic water treatments [J]. | Chemical Engineering Journal , 2024 , 495 . |
| MLA | Song, Yadan et al. "Laser-induced growth of metal oxide films on quartz tubes for photocatalytic water treatments" . | Chemical Engineering Journal 495 (2024) . |
| APA | Song, Yadan , Zhi, Songsong , Wang, Hongju , Yang, Qian , Guo, Jing , Yang, Can et al. Laser-induced growth of metal oxide films on quartz tubes for photocatalytic water treatments . | Chemical Engineering Journal , 2024 , 495 . |
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Hybridizing two heterocomponents to construct a built-in electric field (BIEF) at the interface represents a significant strategy for facilitating charge separation in carbon dioxide (CO2)-photoreduction. However, the unidirectional nature of BIEFs formed by various low-dimensional materials poses challenges in adequately segregating the photogenerated carriers produced in bulk. In this study, leveraging zinc oxide (ZnO) nanodisks, a sulfurization reaction is employed to fabricate Z-scheme ZnO/zinc sulfide (ZnS) heterojunctions featuring a multiple-order BIEF. These heterojunctions reveal distinctive interfacial structures characterized by two semicoherent phase boundaries. The cathodoluminescence 2D maps and density functional theory calculation results demonstrate that the direction of the multiple-order BIEF spans from ZnS to ZnO. This directional alignment significantly fosters the spatial separation of photogenerated electrons and holes within ZnS nanoparticles and enhances CO2-to-carbon monoxide photoreduction performance (3811.7 mu mol h(-1) g(-1)). The findings present a novel pathway for structurally designing BIEFs within heterojunctions, while providing fresh insights into the migratory behavior of photogenerated carriers across interfaces.
Keyword ：
built-in electric field built-in electric field CO2 photoreduction CO2 photoreduction heterojunctions heterojunctions interfacial structures interfacial structures photocatalysis photocatalysis
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| GB/T 7714 | Xue, Sikang , Tang, Hao , Shen, Min et al. Establishing Multiple-Order Built-In Electric Fields Within Heterojunctions to Achieve Photocarrier Spatial Separation [J]. | ADVANCED MATERIALS , 2024 . |
| MLA | Xue, Sikang et al. "Establishing Multiple-Order Built-In Electric Fields Within Heterojunctions to Achieve Photocarrier Spatial Separation" . | ADVANCED MATERIALS (2024) . |
| APA | Xue, Sikang , Tang, Hao , Shen, Min , Liang, Xiaocong , Li, Xiaoyan , Xing, Wandong et al. Establishing Multiple-Order Built-In Electric Fields Within Heterojunctions to Achieve Photocarrier Spatial Separation . | ADVANCED MATERIALS , 2024 . |
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