Article
Chemistry, Physical
Dong Wang, Xiaojun Gu, Guanwei Liu, Guofang Huang, Yue Cao, Yan Guo
Summary: The construction of structural defects in photocatalysts through coupling cold plasma and thermal polymerization approaches can greatly enhance their photocatalytic performance, particularly in visible-light-driven hydrogen generation from water. By controlling the conditions during plasma modification, the band structure of C3N4-x catalysts can be effectively regulated, leading to optimized hydrogen generation activity. This cold plasma modification-based one-step synthesis approach provides guidance for designing defective nanomaterials with excellent catalytic performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Ceramics
Qing Yang, Yunfeng Li, Zhiling Xia, Wei Chang, Yan Xing
Summary: Efficient nitride photocatalysts have attracted much attention, and this study successfully synthesized two-dimensional mesoporous Ta3N5 as a promising candidate. The use of a biological template and vacuum nitriding reactions allowed the incorporation of nitrogen vacancies, optimizing the band structure and enhancing the photocatalytic performance. This work provides a new perspective for the preparation of two-dimensional nitride materials with improved photocatalytic activity.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Xuan Zhou, Yurong Liu, Zhengyuan Jin, Meina Huang, Feifan Zhou, Jun Song, Junle Qu, Yu-Jia Zeng, Peng-Cheng Qian, Wai-Yeung Wong
Summary: A metal-complex-modified graphitic carbon nitride bulk heterostructure is proposed as a promising alternative to high-cost noble metals as artificial photocatalysts. Experimental studies show that the Pt(II) acetylide group effectively expands electron delocalization and enhances light-harvesting efficiencies. Among the tested assemblies, Pt-P@CN without any Pt metal additives exhibits significantly improved photocatalytic H-2 generation rate under simulated sunlight irradiation.
Article
Chemistry, Multidisciplinary
Yan Lin, Chunping Yang, Qiuya Niu, Shenglian Luo
Summary: A novel composite photocatalyst, Ag3PO4@W2N3-NV, was successfully synthesized and applied for efficient removal of beta-lactam antibiotics, showing superior photocatalytic degradation performance. Experimental results confirmed that the presence of nitrogen vacancies on the W2N3-NV surface facilitated the formation of defects and dangling bonds, promoting the combination with Ag3PO4 and formation of new chemical bonds at the interface. The W-O chemical bonds formed at the interface facilitated fast transfer of photogenerated charge carriers, enhancing the carriers transfer and separation ability of the composite photocatalyst.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Siqi Liu, Weiliang Qi, Jue Liu, Xiangjian Meng, Samira Adimi, J. Paul Attfield, Minghui Yang
Summary: The synthesis of transition metal (M = V, Mo, and W) doped cobalt nitride catalyst for solar to hydrogen energy conversion is reported. The as-prepared cobalt nitride was found to contain lattice defects. M-doping improved charge carrier separation efficiency and reaction kinetics by altering the electronic structure and properties of cobalt nitride. The optimal V-Co3.75N0.14-Eosin-Y system exhibited a hydrogen evolution rate of 21.21 μmol·mg-1·h-1 and a quantum efficiency of 38% at 405 nm excitation wavelength, surpassing previous hybrid photocatalysts.
Article
Chemistry, Applied
Ban Wang, Gavin E. Mccabe, Mitchell J. Parrish, Jujhar Singh, Matthias Zeller, Yongming Deng
Summary: A photoinduced selective hydroamination reaction of ynamides with nitrogen heteroaromatic nucleophiles has been developed using an organocatalytic photoredox system. This method allows for the direct construction of a diverse range of (Z)-alpha-azole enamides from ynamides and pyrazoles, triazoles, benzotriazoles, indazoles, and tetrazoles, providing a photocatalytic synthetic route to heterocyclic motifs commonly found in medicinal agents.
ADVANCED SYNTHESIS & CATALYSIS
(2022)
Article
Engineering, Environmental
Nijad Ishak, Velu Jeyalakshmi, Milena Setka, Mathieu Grandcolas, Balamurugan Devadas, Miroslav Soos
Summary: The aim of this study is to synthesize a cheap, nonmetallic and active photocatalyst. Carbon loadings were incorporated into the graphitic carbon nitride semiconductor using a wet impregnation method. The treated 0.5 wt% N-Carbon/g-C3N4 catalyst showed the highest degradation efficiency of methylene blue with a rate of 90% in 3 hours. The high potential of this technology for water purification and other related fields is proven by its high activity, stability, low cost and non-toxicity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Jin Ma, Xiaoxiao Peng, Zhixin Zhou, Hong Yang, Kaiqing Wu, Zhengzou Fang, Dan Han, Yanfeng Fang, Songqin Liu, Yanfei Shen, Yuanjian Zhang
Summary: This study reports a C5N2 photocatalyst with a conjugated C=N linkage for selective and efficient non-sacrificial production of H2O2. The photocatalyst exhibits high solar-to-chemical conversion efficiency and the highest activity under hypoxic conditions. Additionally, the study demonstrates the outstanding performance of C5N2 in hypoxic PDT/CDT.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Multidisciplinary Sciences
Simon D. Kloss, Arthur Haffner, Pascal Manuel, Masato Goto, Yuichi Shimakawa, J. Paul Attfield
Summary: Transition metal nitrides are important materials with various applications, but high oxidation states are difficult to achieve due to the stability of dinitrogen. A versatile synthesis route using azide-mediated oxidation under pressure has been developed to prepare highly oxidised ternary nitrides like Ca4FeN4 containing Fe4+ ions. This method opens up new possibilities for the discovery of highly oxidised nitrides.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Ramesh Chandra Sahoo, Haijiao Lu, Dimple Garg, Zongyou Yin, H. S. S. Ramakrishna Matte
Summary: A copolymerization strategy was employed to synthesize g-C3N4 with a narrow bandgap, and composites of g-C3N4 and reduced graphene oxide (rGO) were prepared as catalysts. These composite catalysts exhibited selective photoreduction of CO2 to methanol, along with good stability under scavenger-free conditions.
Article
Engineering, Environmental
Wenhao Sun, Hongrui Cheng, Jing Zhang, Xiao Fang, Wenkai Chen, Jiefang Zhu, Yuanhui Zheng
Summary: This paper reports the first efficient allochroic Pt/g-C3N4 photocatalyst, which can form an ohmic contact through the photoconversion of semiconducting g-C3N4 to metalloid, accompanied by charge carrier storage and photocatalyst color change. The photocatalyst shows the highest hydrogen evolution performances by intermittently exposing it to air for a few minutes during photocatalysis.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Andrea Rogolino, Ingrid F. Silva, Nadezda V. Tarakina, Marcos A. R. da Silva, Guilherme F. S. R. Rocha, Markus Antonietti, Ivo F. Teixeira
Summary: This study reveals that functionalized poly(heptazine imides) (PHIs) and fully protonated PHIs have high photocatalytic activity for efficient production of H2O2 under visible light. Functionalization with transition metals is not beneficial for H2O2 synthesis and may catalyze its decomposition.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Wei Tang, Liping Cheng, Liguo Zhang, Xiangdong Xue, Dongxue Zhou, Baozhen Li, Ge Wang, Yanli Zeng, Xueqing Xing, Xuyuan Zhang, Wenjun Dong, Changmin Hou
Summary: Regulating the electronic structure and enriching active sites of photocatalysts are effective strategies to promote hydrogen evolution. In this study, a unique NixCd1-xS-Ni-0 photocatalyst with surface Ni doping and atomic Ni0 anchoring sites was successfully prepared. Ni doping modulates the electronic structure of adjacent S atoms, while anchored Ni-0 atoms facilitate the production of hydrogen. The NixCd1-xS-Ni-0 photocatalyst exhibits excellent photocatalytic performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Carmen Mejuto, Laura Ibanez-Ibanez, Gregorio Guisado-Barrios, Jose A. Mata
Summary: This study describes an effective visible-light-promoted iridium catalyst that enables hydrogen production at room temperature without additives. The single iridium complex in the photocatalytic system plays a dual role in harvesting visible light and facilitating C-H cleavage and H-2 formation. The presence of specific ligands in the iridium complex is crucial for the photocatalytic transformation, and the complex also acts as an efficient catalyst for thermal reverse process under mild conditions.
Article
Chemistry, Multidisciplinary
Dariusz Mitoraj, Igor Krivtsov, Chunyu Li, Ashwene Rajagopal, Changbin Im, Christiane Adler, Kerstin Koble, Olena Khainakova, Julian Hniopek, Christof Neumann, Andrey Turchanin, Ivan da Silva, Michael Schmitt, Robert Leiter, Tibor Lehnert, Jurgen Popp, Ute Kaiser, Timo Jacob, Carsten Streb, Benjamin Dietzek, Radim Beranek
Summary: The study utilizes a high-temperature treatment method to transform conventional melamine-derived yellow PCN into red carbon nitride, introducing a new functionality that promotes visible light absorption and expands the light absorption range of PCN materials.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Physical
Yu-Xiang Yu, Linfeng Pan, Min-Kyu Son, Matthew T. Mayer, Wei-De Zhang, Anders Hagfeldt, Jingshan Luo, Michael Graetzel
ACS ENERGY LETTERS
(2018)
Article
Chemistry, Physical
Cheng-Qun Xu, Wei-De Zhang
MOLECULAR CATALYSIS
(2018)
Article
Chemistry, Physical
Yunxiao Zhang, Wei-De Zhang
Article
Chemistry, Physical
Gui-Ying Zhuge, Wei-De Zhang
Article
Nanoscience & Nanotechnology
Yun-Xiao Zhang, Shuang Tang, Wei-De Zhang, Yu-Xiang Yu
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Chemistry, Physical
Jun-Shuai Zhang, Wei-De Zhang
Article
Chemistry, Physical
Hai-Xin Guan, Wei-De Zhang
Article
Chemistry, Physical
Miao Sun, Hai-Xin Guan, Wei-De Zhang, Yu-Xiang Yu
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Chemistry, Physical
Gui-Ying Zhuge, Wei-De Zhang
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2019)
Article
Engineering, Environmental
Yun-Xiao Zhang, Peng Zeng, Yu-Xiang Yu, Wei-De Zhang
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Chemistry, Physical
Jun-Shuai Zhang, Wei-De Zhang
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2020)
Article
Engineering, Environmental
Zhiwen Lei, Jianwen Feng, Yu Yang, Jinlai Shen, Weide Zhang, Chaoyang Wang
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Article
Chemistry, Physical
Zhang-Jie Liu, Wei-De Zhang, Yu-Xiang Yu
Summary: A simple and effective one-pot thermal polycondensation method was developed to introduce a quinoline ring and naphthalene ring on the edge of g-C3N4. This structural modification facilitates electron migration and enhances the separation efficiency of photogenerated charge carriers. The prepared edge-grafted samples demonstrate significantly improved hydrogen production rate and apparent quantum yield, indicating their potential as highly-efficient photocatalysts for solar-driven hydrogen production.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Xuelian Hu, Yangsen Xu, Shuang Tang, Wenwu Shi, Xinzhong Wang, Yu-Xiang Yu, Wei-De Zhang
Summary: This study successfully fabricates an S-scheme heterojunction of MnO-CCN through a one-pot calcination process, exhibiting high photocatalytic performance in simultaneous utilization of photoexcited electrons for hydrogen evolution and holes for alcohols oxidation.
Article
Chemistry, Physical
Jun-Shuai Zhang, Wen-Chen Zhou, Jia-Yu Lai, Wei-De Zhang
Summary: A cost-effective photocatalyst was developed by incorporating a copper complex (CuL) and carbon nanotubes (CNTs) onto a carbon nitride polymer (CN) for efficient H-2 generation, which is of great significance for addressing environmental contamination and the global energy crisis.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)