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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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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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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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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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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 , 36 (16) . |
| MLA | Xue, Sikang et al. "Establishing Multiple-Order Built-In Electric Fields Within Heterojunctions to Achieve Photocarrier Spatial Separation" . | ADVANCED MATERIALS 36 . 16 (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 , 36 (16) . |
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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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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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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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天然气、煤层气和油田伴生气等工业生产过程常伴生H_2S、COS、甲硫醇等挥发性硫化物,传统脱硫技术,如吸收法、吸附法和克劳斯工艺等等,存在对硫化物脱除深度不足、脱硫后续工段尾排硫浓度高,催化剂易失活,产生大量固体废催化剂,造成环境二次污染等重要问题。因此,亟待发展硫化物深度治理及资源化的新型纳米催化材料和新技术,解决能源和环境领域面临的重大问题。选择性氧化法是最具应用前景的脱硫技术之一,金属氧化物作为催化剂或载体材料已在该领域得到广泛研究。同时,化学结构稳定、比表面积高、孔容大、化学性质丰富可调的非金属基碳氮材料在硫化物选择性氧化反应中也吸引了广泛关注。碳氮材料因具有丰富的结构性碱中心,能有效地活化硫化物分子并进行选择性催化转化。通对碳氮材料进行结构性碱中心调控、微纳结构调控以及表面电子结构调控,我们制备了一系列具有优异的硫化物选择性催化氧化性能的碳氮材料,实现了硫化物的高效催化转化。
Keyword ：
挥发性硫化物 挥发性硫化物 碳氮材料 碳氮材料 结构性碱中心 结构性碱中心 选择性氧化 选择性氧化
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| GB/T 7714 | 阳灿 , 王佳丽 . 富氮碳材料在H_2S选择性氧化反应中的应用 [C] //第4届分子科学博士后学术年会 . 2024 . |
| MLA | 阳灿 et al. "富氮碳材料在H_2S选择性氧化反应中的应用" 第4届分子科学博士后学术年会 . (2024) . |
| APA | 阳灿 , 王佳丽 . 富氮碳材料在H_2S选择性氧化反应中的应用 第4届分子科学博士后学术年会 . (2024) . |
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Defect engineering has been widely applied in semiconductors to improve photocatalytic properties by altering the surface structures. This study is about the transformation of inactive WO 3 nanosheets to a highly effective CO 2 - to - CH 4 conversion photocatalyst by introducing surface - ordered defects in abundance. The nonstoichiometric WO 3 - x samples were examined by using aberration - corrected electron microscopy. Results unveil abundant surface - ordered terminations derived from the periodic {013} stacking faults with a defect density of 20.2%. The {002} surface - ordered line defects are the active sites for fixation CO 2 , transforming the inactive WO 3 nanosheets into a highly active catalyst (CH 4 : O 2 = 8.2: 16.7 mu mol h -1 ). We believe that the formation of the W - O - C - W - O species is a critical step in the catalytic pathways. This work provides an atomic - level comprehension of the structural defects of catalysts for activating small molecules.
Keyword ：
CO 2 conversion CO 2 conversion induced polarization induced polarization photocatalysis photocatalysis surface- ordered defects surface- ordered defects unsaturated coordination unsaturated coordination
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| GB/T 7714 | Xue, Sikang , Wei, Changgeng , Shen, Min et al. Enriching surface- ordered defects on WO3 for photocatalytic CO2-to-CH4 conversion by water [J]. | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA , 2024 , 121 (18) . |
| MLA | Xue, Sikang et al. "Enriching surface- ordered defects on WO3 for photocatalytic CO2-to-CH4 conversion by water" . | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 121 . 18 (2024) . |
| APA | Xue, Sikang , Wei, Changgeng , Shen, Min , Liang, Xiaocong , Wang, Jiali , Yang, Can et al. Enriching surface- ordered defects on WO3 for photocatalytic CO2-to-CH4 conversion by water . | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA , 2024 , 121 (18) . |
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