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学者姓名：何运慧
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Abstract ：
Atomically precise metal nanoclusters (NCs), distinguished by their unique electronic structures, quantum confinement effects, and enriched active sites, have been considered highly promising photosensitizers for light harvesting and conversion. However, the ultra-short carrier lifetime and poor stability of metal NCs remarkably retard their widespread applications in photocatalysis. In this study, we achieved the modulation of carrier separation over metal NCs via heterostructure engineering by smartly integrating atomically precise silver NCs [Ag16(GSH)9] with transition metal chalcogenides (TMCs). The favorable energy level alignment between metal NCs and TMCs facilitates the electron transfer from the metal NCs to the TMCs, leading to a significantly prolonged charge lifetime and considerably enhanced photoactivity toward the selective reduction of nitro compounds to amino derivatives under visible light. The photocatalytic mechanism of these composite photosystems is elucidated herein. This work advances our fundamental understanding of charge transfer mechanisms over atomically precise metal NCs for solar energy conversion. © 2024 The Royal Society of Chemistry.
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| GB/T 7714 | Zhang, J. , Zhan, L. , Ning, B. et al. Photoredox catalysis enabled by atomically precise metal nanoclusters [J]. | Inorganic Chemistry Frontiers , 2024 , 11 (20) : 6970-6980 . |
| MLA | Zhang, J. et al. "Photoredox catalysis enabled by atomically precise metal nanoclusters" . | Inorganic Chemistry Frontiers 11 . 20 (2024) : 6970-6980 . |
| APA | Zhang, J. , Zhan, L. , Ning, B. , He, Y. , Xiao, G. , Chen, Z. et al. Photoredox catalysis enabled by atomically precise metal nanoclusters . | Inorganic Chemistry Frontiers , 2024 , 11 (20) , 6970-6980 . |
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Wastewater pollutants are a major threat to natural resources, with antibiotics and heavy metals being common water contaminants. By harnessing clean, renewable solar energy, photocatalysis facilitates the synergistic removal of heavy metals and antibiotics. In this paper, MXene was both a template and raw material, and MXene-derived oxide (TiO2) and SnIn4S8 Z-scheme composite materials were synthesized and characterized. The synergistic mode of photocatalytic reduction and oxidation leads to the enhanced utilization of e(-)/h(+) pairs. The TiO2/SnIn4S8 exhibited a higher photocatalytic capacity for the simultaneous removal of tetracycline (TC) (20 mg center dot L-1) and Cr(VI) (15 mg center dot L-1). The main active substances of TC degradation and Cr(VI) reduction were identified via free radical scavengers and electron paramagnetic resonance (EPR). Additionally, the potential photocatalytic degradation route of TC was thoroughly elucidated through liquid chromatography-mass spectrometry (LC-MS).
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| GB/T 7714 | Ning, Boyuan , Chen, Zhixin , Cai, Yanqing et al. Simultaneous Photocatalytic Tetracycline Oxidation and Cr(VI) Reduction by Z-Scheme Multiple Layer TiO2/SnIn4S8 [J]. | LANGMUIR , 2024 , 40 (17) : 9144-9154 . |
| MLA | Ning, Boyuan et al. "Simultaneous Photocatalytic Tetracycline Oxidation and Cr(VI) Reduction by Z-Scheme Multiple Layer TiO2/SnIn4S8" . | LANGMUIR 40 . 17 (2024) : 9144-9154 . |
| APA | Ning, Boyuan , Chen, Zhixin , Cai, Yanqing , Xiao, Fang-Xing , Xu, Pingfan , Xiao, Guangcan et al. Simultaneous Photocatalytic Tetracycline Oxidation and Cr(VI) Reduction by Z-Scheme Multiple Layer TiO2/SnIn4S8 . | LANGMUIR , 2024 , 40 (17) , 9144-9154 . |
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Covalent organic frameworks (COFs) are crystalline porous materials with enormous potential for realiz-ing solar-driven CO2-to-fuel conversion, yet the sluggish transfer/separation of photoinduced electrons and holes remains a compelling challenge. Herein, a step (S)-scheme heterojunction photocatalyst (CuWO4-COF) was rationally fabricated by a thermal annealing method for boosting CO2 conversion to CO. The optimal CuWO4/COF composite sample, integrating 10 wt% CuWO4 with an olefin (CC) linked COF (TTCOF), achieved a remarkable gas-solid phase CO yield as high as 7.17 +/- 0.35 lmol g-1h-1 under visible light irradiation, which was significantly higher than the pure COF (1.6 +/- 0.29 lmol g-1h-1). The enhanced CO2 conversion rate could be attributable to the interface engineering effect and the formation of internal electric field (IEF) directing from TTCOF to CuWO4 according to the theoretical calculation and experimental results, which also proves the electrons transfer from TTCOF to CuWO4 upon hybridization. In addition, driven by the IEF, the photoinduced electrons can be steered from CuWO4 to TTCOF under visible light irradiation as well-elucidated by in-situ irradiated X-ray photoelectron spectroscopy, verify-ing the S-scheme charge transfer pathway over CuWO4/COF composite heterojunctions, which greatly foster the photoreduction activity of CO2. The preparation technique of the S-scheme heterojunction pho-tocatalyst in this study provides a paradigmatic protocol for photocatalytic solar fuel generation. (c) 2023 Elsevier Inc. All rights reserved.
Keyword ：
CO2 reduction CO2 reduction Covalent organic frameworks Covalent organic frameworks CuWO4 CuWO4 Photocatalysis Photocatalysis S-scheme S-scheme
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| GB/T 7714 | Niu, Qing , Chen, Qiaoshan , Huang, Guocheng et al. Build-in electric field in CuWO4/covalent organic frameworks S-scheme photocatalysts steer boosting charge transfer for photocatalytic CO2 reduction [J]. | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2023 , 643 : 102-114 . |
| MLA | Niu, Qing et al. "Build-in electric field in CuWO4/covalent organic frameworks S-scheme photocatalysts steer boosting charge transfer for photocatalytic CO2 reduction" . | JOURNAL OF COLLOID AND INTERFACE SCIENCE 643 (2023) : 102-114 . |
| APA | Niu, Qing , Chen, Qiaoshan , Huang, Guocheng , Li, Liuyi , He, Yunhui , Bi, Jinhong . Build-in electric field in CuWO4/covalent organic frameworks S-scheme photocatalysts steer boosting charge transfer for photocatalytic CO2 reduction . | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2023 , 643 , 102-114 . |
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Background: The accumulation of antibiotics in water systems has received considerable global attention due to its detrimental effects. There is an urgent need to develop rapid and efficient methods for the degradation of antibiotics.Methods: In this work, a highly efficient AgFeO2/Ag3VO4 photocatalyst was successfully fabricated by a hydrothermal method and analyzed using different techniques. Under visible light irradiation, photocatalytic behavior of AgFeO2/Ag3VO4 heterojunctions in the degradation of levofloxacin is investigated. Significant findings: The results showed that p-n heterojunction was formed between AgFeO2 and Ag3VO4, which improved the separation and transfer of photogenerated charge carrier under the action of the internal electric field. The apparent reaction rate of AgFeO2/Ag3VO4 heterostructure toward degradation of levofloxacin reached to 0.2770 min-1, which was about 2.15 times and 36.73 times larger than those of Ag3VO4 and AgFeO2, respectively, and much larger than other counterparts. Furthermore, possible photocatalytic degradation pathway of levofloxacin was comprehensively determined by LC-MS analysis. This work would provide in-depth understanding on the efficient photocatalytic removal of antibiotics for sustainable environmental remediation.
Keyword ：
Degradation pathway Degradation pathway p-n heterojunction p-n heterojunction Visible-light photocatalysis Visible-light photocatalysis
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| GB/T 7714 | Chen, Zhixin , Ning, Boyuan , Cai, Yanqing et al. Rapid degradation of levofloxacin by p-n heterojunction AgFeO2/Ag3VO4 photocatalyst: Mechanism study and degradation pathway [J]. | JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS , 2023 , 151 . |
| MLA | Chen, Zhixin et al. "Rapid degradation of levofloxacin by p-n heterojunction AgFeO2/Ag3VO4 photocatalyst: Mechanism study and degradation pathway" . | JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS 151 (2023) . |
| APA | Chen, Zhixin , Ning, Boyuan , Cai, Yanqing , Liu, Minghua , Xu, Pingfan , Zhang, Peikun et al. Rapid degradation of levofloxacin by p-n heterojunction AgFeO2/Ag3VO4 photocatalyst: Mechanism study and degradation pathway . | JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS , 2023 , 151 . |
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本发明提供一种钨酸银/偏钒酸银复合光催化剂的制备及其应用。该复合光催化剂由钨酸银纳米颗粒复合在一维棒状的偏钒酸银上组成，在制备过程采用一步沉淀法合成钨酸银/偏钒酸银复合光催化剂。与单独的钨酸银和偏钒酸银相比，钨酸银/偏钒酸银复合光催化活性得到明显提高。钨酸银/偏钒酸银复合光催化剂具有制备方法简单、条件易控、能耗低和光催化活性好等优点，是一种新型光催化剂并成功应用于染料降解。
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| GB/T 7714 | 陈志鑫 , 蔡燕卿 , 刘明华 et al. 一种钨酸银/偏钒酸银复合光催化剂的制备及其应用 : CN202111620135.4[P]. | 2021-12-28 00:00:00 . |
| MLA | 陈志鑫 et al. "一种钨酸银/偏钒酸银复合光催化剂的制备及其应用" : CN202111620135.4. | 2021-12-28 00:00:00 . |
| APA | 陈志鑫 , 蔡燕卿 , 刘明华 , 肖光参 , 何运慧 . 一种钨酸银/偏钒酸银复合光催化剂的制备及其应用 : CN202111620135.4. | 2021-12-28 00:00:00 . |
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本发明属于功能材料领域，具体涉及一种偏钒酸银薄膜光催化剂的制备及其应用。该薄膜光催化剂是由一维线状偏钒酸银组成的，在制备过程中采用一步水热法合成凝胶状偏钒酸银，并通过缓慢的敲打、挤压、干燥得到大面积偏钒酸银薄膜光催化剂。偏钒酸银薄膜光催化剂具有制备方法简单、易于调控、产品纯度高、薄膜稳定性高易于回收再利用等优点，是一种新型光催化剂并成功应用在染料降解。
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| GB/T 7714 | 陈志鑫 , 蔡燕卿 , 刘明华 et al. 一种偏钒酸银薄膜光催化剂的制备及其应用 : CN202210584913.7[P]. | 2022-05-27 00:00:00 . |
| MLA | 陈志鑫 et al. "一种偏钒酸银薄膜光催化剂的制备及其应用" : CN202210584913.7. | 2022-05-27 00:00:00 . |
| APA | 陈志鑫 , 蔡燕卿 , 刘明华 , 肖光参 , 何运慧 . 一种偏钒酸银薄膜光催化剂的制备及其应用 : CN202210584913.7. | 2022-05-27 00:00:00 . |
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Photocatalysis offers a sustainable approach for recalcitrant organic pollutants degradation, yet it is still challenging to seek robust photocatalysts for application purposes. Herein, a novel NiFe layered double hydroxide (LDH)/covalent triazine framework (CTF-1) Z-scheme heterojunction photocatalyst was rationally designed for antibiotics degradation under visible light irradiation. The NiFe-LDH/CTF-1 nanocomposites were readily obtained via in situ loading of NiFe-LDH on CTF-1 through covalent linking. The abundant coupling interfaces between two semiconductor counterparts lay the foundation for the formation of Z-scheme heterostructure, thereby effectively promoting the transfer of photogenerated electrons, inhibiting the recombination of carriers, as well as conferring the nanocomposites with stronger redox ability. Consequently, the optimal photocatalytic activity of the LDH/CTF heterojunction was significantly boosted for the degradation of a typical antibiotic, tetracycline (TC). Additionally, the photodegradation process and the mineralization of TC were further elucidated. These results envision that the LDH/CTF-1 can be a viable photocatalyst for long-term and sustainable wastewater treatment.
Keyword ：
antibiotic antibiotic layered double hydroxide layered double hydroxide photocatalysis photocatalysis
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| GB/T 7714 | Zhang, Jinpeng , Chen, Xiaoping , Chen, Qiaoshan et al. Insights into Photocatalytic Degradation Pathways and Mechanism of Tetracycline by an Efficient Z-Scheme NiFe-LDH/CTF-1 Heterojunction [J]. | NANOMATERIALS , 2022 , 12 (23) . |
| MLA | Zhang, Jinpeng et al. "Insights into Photocatalytic Degradation Pathways and Mechanism of Tetracycline by an Efficient Z-Scheme NiFe-LDH/CTF-1 Heterojunction" . | NANOMATERIALS 12 . 23 (2022) . |
| APA | Zhang, Jinpeng , Chen, Xiaoping , Chen, Qiaoshan , He, Yunhui , Pan, Min , Huang, Guocheng et al. Insights into Photocatalytic Degradation Pathways and Mechanism of Tetracycline by an Efficient Z-Scheme NiFe-LDH/CTF-1 Heterojunction . | NANOMATERIALS , 2022 , 12 (23) . |
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本发明提供了一维In2O3/In2S3复合半导体纳米纤维的一步合成方法，通过设计前驱体纺丝液反应体系，在静电纺丝设备中进行喷射纺丝；所制得的前驱体纤维在管式炉中进行高温煅烧，得到一维In2O3/In2S3复合半导体纳米纤维。本发明通过设计前驱体纺丝液反应体系，调控纺丝参数和调节煅烧条件，得到尺寸均一、形貌可控的一维In2O3/In2S3复合半导体纳米纤维。本发明制备工艺简单，易于调控，选用的原料来源广泛，价格低廉，符合实际生产需要，在气敏传感、光催化、电催化、新半导体材料等领域具有较大的应用潜力。
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| GB/T 7714 | 何运慧 , 连希凡 , 刘明华 et al. 一维氧化铟/硫化铟复合半导体纳米纤维的一步合成方法 : CN202011396591.0[P]. | 2020-12-04 . |
| MLA | 何运慧 et al. "一维氧化铟/硫化铟复合半导体纳米纤维的一步合成方法" : CN202011396591.0. | 2020-12-04 . |
| APA | 何运慧 , 连希凡 , 刘明华 , 肖光参 , 陈志鑫 . 一维氧化铟/硫化铟复合半导体纳米纤维的一步合成方法 : CN202011396591.0. | 2020-12-04 . |
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Metal nanoparticles (NPs) have been deemed an imperative sector of nanomaterial for triggering the Schottky-junction-driven electron flow in photoredox catalysis, but they suffer from sluggish charge-transfer kinetics, rendering efficient charge flow difficult. Here, we report the construction of unidirectional charge-transfer channel in a metal/semi-conductor heterostructure via a ligand-triggered self-assembly method, by which hierarchically branched ligands (DMAP)-capped Pd NPs were controllably attached on the WO3 nanorods (NRs) scaffold, resulting in the well-defined Pd@DMAP/WO3 NRs heterostructures. The pinpointed deposition of Pd@DMAP on the WO3 NRs endows the Pd@DMAP/WO3 NRs heterostructure with conspicuously improved photoactivities for organic pollutant mineralization, as well as the capacities for photocatalytic selective oxidation of aromatic alcohols to aldehydes and photoreduction of chromium ions under the irradiation of simulated sunlight and visible light, far surpassing the applicability of blank WO3 NRs. This is due to the imperative contribution of Pd@DMAP as efficient electron reservoir in accelerating the unidirectional flow of electrons from Pd@DMAP to WO3 NRs, overcoming the confinement of spatially hierarchically branched ligand and interface configuration. Moreover, interfacial charge transport efficiency is finely tuned by the interface configuration engineering. The active species in the multifarious photoreactions were unveiled, and a linker-triggered photoredox catalysis mechanism was put forward. It is hoped that our current work would afford new strategies for strategically constructing metal/semiconductor heterostructures for versatile photocatalytic applications.
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| GB/T 7714 | Lin, Xin , Wei, Zhi-Quan , Li, Tao et al. Charge Transport Surmounting Hierarchical Ligand Confinement toward Multifarious Photoredox Catalysis [J]. | INORGANIC CHEMISTRY , 2020 , 59 (2) : 1364-1375 . |
| MLA | Lin, Xin et al. "Charge Transport Surmounting Hierarchical Ligand Confinement toward Multifarious Photoredox Catalysis" . | INORGANIC CHEMISTRY 59 . 2 (2020) : 1364-1375 . |
| APA | Lin, Xin , Wei, Zhi-Quan , Li, Tao , Huang, Ming-Hui , Xu, Shuai , He, Yunhui et al. Charge Transport Surmounting Hierarchical Ligand Confinement toward Multifarious Photoredox Catalysis . | INORGANIC CHEMISTRY , 2020 , 59 (2) , 1364-1375 . |
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The capability of noble metal nanoparticles (NPs) as efficient charge transfer mediators to stimulate Schottky-junction-triggered charge flow in multifarious photocatalysis has garnered enormous attention in the past decade. Nevertheless, fine-tuning and controllable fabrication of a directional charge transport channel in metal/semiconductor heterostructures via suitable interface engineering is poorly investigated. Here, we report the progressive fabrication of a tailor-made directional charge transfer channel in Pt nanoparticles (NPs)-inlaid WO3 (Pt-WO3) nanocomposites via an efficient electrostatic layer-by-layer (LbL) self-assembly integrated with a thermal reduction treatment, by which oppositely charged metal precursor ions and polyelectrolyte building blocks were intimately and alternately assembled on the WO3 nanorods (NRs) by substantial electrostatic interaction. LbL self-assembly buildup and in situ self-etching-induced structural variation of WO3 NRs to a microsized superstructure occur simultaneously. We found that such exquisitely crafted Pt-WO3 nanocomposites exhibit conspicuously enhanced and versatile photoactivities for nonselective mineralizing of organic dye pollution and reduction of heavy metal ions at ambient conditions under both visible and simulated sunlight irradiation, demonstrating a synergistic effect. This is attributed to the imperative contribution of Pt NPs as electron traps to accelerate the directional high-efficiency electron transport from WO3 to Pt NPs, surpassing the confinement of electron transfer kinetics of WO3 owing to low conduction level. More intriguingly, photoredox catalysis can also be triggered simultaneously in the same reaction system. The primary in situ produced active species in the photocatalytic reactions were specifically analyzed, and underlying photocatalytic mechanisms were determined. Our work would provide a universal synthesis strategy for constructing various metal-decorated semiconductor nanocomposites for widespread photocatalytic utilizations.
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| GB/T 7714 | Lin, Hua-Jian , Xu, Shuai , Fu, Xiao-Yan et al. Layer-by-Layer Self-Assembly of Metal/Metal Oxide Superstructures: Self-Etching Enables Boosted Photoredox Catalysis [J]. | INORGANIC CHEMISTRY , 2020 , 59 (6) : 4129-4139 . |
| MLA | Lin, Hua-Jian et al. "Layer-by-Layer Self-Assembly of Metal/Metal Oxide Superstructures: Self-Etching Enables Boosted Photoredox Catalysis" . | INORGANIC CHEMISTRY 59 . 6 (2020) : 4129-4139 . |
| APA | Lin, Hua-Jian , Xu, Shuai , Fu, Xiao-Yan , Wei, Zhi-Quan , Huang, Ming-Hui , Lin, Xin et al. Layer-by-Layer Self-Assembly of Metal/Metal Oxide Superstructures: Self-Etching Enables Boosted Photoredox Catalysis . | INORGANIC CHEMISTRY , 2020 , 59 (6) , 4129-4139 . |
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