Article
Chemistry, Multidisciplinary
Yang Shao, Huub J. M. de Groot, Francesco Buda
Summary: The study focuses on improving the performance of dye-sensitized photoelectrochemical cell (DS-PEC) devices by tailoring the four-photon water oxidation half-reaction and using a Ru-based water oxidation catalyst (WOC) covalently bound to NDI dye functionalities to create a two-channel model. This model enables two separate parallel electron-transfer channels in the catalytic cycle, leading to the development of novel high-efficiency supramolecular complexes for DS-PEC devices. The proposed photocatalytic cycle of the two-channel model provides insight for building and conserving spin multiplicity as a design principle along the reaction coordinate.
Article
Chemistry, Physical
Huihui Li, Jiadong Xiao, Junie Jhon M. Vequizo, Takashi Hisatomi, Mamiko Nakabayashi, Zhenhua Pan, Naoya Shibata, Akira Yamakata, Tsuyoshi Takata, Kazunari Domen
Summary: By combining flux-assisted nitridation with Mg doping and co-loading of Cr2O3/(Na)Rh and IrO2 co-catalysts, the activation and stabilization of BaTaO2N-based photocatalyst for visible-light-driven overall water splitting is achieved.
Article
Chemistry, Physical
Huihui Li, Jiadong Xiao, Junie Jhon M. Vequizo, Takashi Hisatomi, Mamiko Nakabayashi, Zhenhua Pan, Naoya Shibata, Akira Yamakata, Tsuyoshi Takata, Kazunari Domen
Summary: This study demonstrates the activation and stabilization of BaTaO2N-based photocatalysts for visible-light-driven overall water splitting through various approaches. The combination of flux-assisted nitridation, Mg doping, and co-loading of Cr2O3/(Na)Rh and IrO2 co-catalysts plays a crucial role in achieving efficient charge transfer.
Article
Chemistry, Physical
Zixin Qiu, Bingchun Wang, Xunfu Zhou, Siyuan Yang, Qiongzhi Gao, Xin Cai, Shengsen Zhang, Yueping Fang
Summary: In this study, a novel CdS@Mg(OH)(2) core/shell composite nanorods photocatalyst was synthesized by coating Mg(OH)(2) on CdS surface. The coated-Mg(OH)(2) layer improved the photocatalytic water splitting performance, and after Pt deposition, the hydrogen production rate and stability were further enhanced.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Xiaochun Li, Jiawen Wang, Jiawei Xia, Yuanxing Fang, Yidong Hou, Xianzhi Fu, Menny Shalom, Xinchen Wang
Summary: Polymeric carbon nitride (PCN) is a sustainable, metal-free semiconductor that has been studied for its potential in photoelectrochemical (PEC) water splitting. However, the amorphous nature of the polymer limits the charge transfer along the films, thus affecting its performance. In this study, the researchers successfully incorporated gradient concentration of cobalt disulfide (CoS2) into PCN films, resulting in improved charge transfer and enhanced performance for PEC water oxidation.
Article
Engineering, Environmental
Jing Tang, Xiaoyun Ma, Jiaxing He, Xiangyue Liu, Mingde Li
Summary: CdS/Pt/UiO-67 composites, synthesized by using hierarchically structured Zr-based UiO-67 as support to disperse CdS and Pt NPs, exhibit higher activity of hydrogen evolution than pure CdS under visible light irradiation. Femtosecond transient absorption spectra reveal the charge separation kinetics in CdS/Pt/UiO-67. This work provides a deeper understanding of the charge transfer between semiconductor and MOF materials.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Robert E. Warburton, James M. Mayer, Sharon Hammes-Schiffer
Summary: The study elucidates the impact of proton-coupled defects on the bond dissociation free energies of O-H bonds on anatase TiO2 surfaces using hybrid functional periodic density functional theory. The differences in these energy values are primarily determined by differences in electron transfer driving forces, which are analyzed within a Marcus theory framework. These fundamental insights have broad implications for electrocatalysis at semiconductor surfaces.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Inorganic & Nuclear
Deepanshu Sharma, Mohd Faraz, Dheeraj Kumar, Devender Takhar, Balaji Birajdar, Neeraj Khare
Summary: In this study, V2O5/rGO nanocomposite was synthesized using a simple hydrothermal method, and its potential for photocatalysis and photoelectrochemical water splitting was validated. Compared to bare V2O5, V2O5/rGO nanocomposite exhibited improved photocatalytic activity and enhanced photoelectrochemical performance.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Kejian Lu, Fei Xue, Feng Liu, Mengfan Li, Wenlong Fu, Hao Peng, Chunyang Zhang, Jie Huang, Ze Gao, Hongwen Huang, Maochang Liu
Summary: In this study, atomic-scale N-doped NaTaO3@Ta3N5 core-shell cubes were prepared by nitridation of cubic NaTaO3. The core-shell heterojunctions exhibited efficient and stoichiometric evolution of H2 and O2 from photocatalytic overall water splitting, with a quantum efficiency of 2.18% at 550 nm. The successful performance was attributed to the thin Ta3N5 shell, increased lifetimes of the photogenerated charges, and the type-I band alignment that promoted smooth charge flow from N-NaTaO3 to Ta3N5. The efficiency was further improved to 6.28% by in situ deposition of a Rh@Cr2O3 core-shell cocatalyst.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Tianying Liu, Wei Li, David Z. Wang, Tongtong Luo, Muchun Fei, Dongyoon Shin, Matthias M. Waegele, Dunwei Wang
Summary: Solar water oxidation is a crucial step in artificial photosynthesis, and its success relies on the accumulation of charges at the active site. Little is known about the impact of catalyst density on the reaction rate. This study investigates the interplay between catalyst density and surface hole concentration and reveals the unexpected benefits of low-density catalyst loading in facilitating forward charge transfer.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Pir Muhammad Ismail, Sajjad Ali, Sharafat Ali, Jiahao Li, Min Liu, Dong Yan, Fazal Raziq, Fazli Wahid, Guojing Li, Shuhua Yuan, Xiaoqiang Wu, Jiabao Yi, Jun Song Chen, Qingyuan Wang, Li Zhong, Ye Yang, Pengfei Xia, Liang Qiao
Summary: Constructing Van der Waals heterojunction is crucial for achieving excellent photocatalytic activity. In this study, a phosphate-bridged Van der Waals heterojunction of cobalt phthalocyanine (CoPc)/tungsten disulfide (WS2) was designed and prepared, creating an efficient electron transfer channel and achieving significant enhancement in photocatalytic CO2 reduction.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Pir Muhammad Ismail, Sajjad Ali, Sharafat Ali, Jiahao Li, Min Liu, Dong Yan, Fazal Raziq, Fazli Wahid, Guojing Li, Shuhua Yuan, Xiaoqiang Wu, Jiabao Yi, Jun Song Chen, Qingyuan Wang, Li Zhong, Ye Yang, Pengfei Xia, Liang Qiao
Summary: Constructing a phosphate-bridged Van der Waals heterojunction between cobalt phthalocyanine (CoPc) and tungsten disulfide (WS2) through wet chemistry method enables efficient electron transfer and enhanced photocatalytic CO2 reduction into valuable products. The introduction of a small phosphate molecule bridge creates an electron transfer channel, eliminating hindrances and facilitating the transmission of excited photoelectrons from WS2 to CoPc. This heterojunction design demonstrates a 17-fold enhancement compared to pure WS2, offering a new perspective in designing efficient photocatalysts.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Yi Feng, Zhe Li, Chuan-Qi Cheng, Wen-Jing Kang, Jing Mao, Gu-Rong Shen, Jing Yang, Cun-Ku Dong, Hui Liu, Xi-Wen Du
Summary: The research utilized a laser ablation technique to prepare a strawberry-like catalyst embedded with Co3O4 and Ag cluster, effectively promoting water electrolysis process, reducing overpotential, and enhancing the performance of hydrogen evolution and oxygen evolution.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Applied
Nannan Chen, Xuemei Jia, Heng He, Haili Lin, Minna Guo, Jing Cao, Jinfeng Zhang, Shifu Chen
Summary: Constructing step-scheme (S-scheme) heterojunctions can enhance the separation and transfer of photocarriers, as well as improve redox ability. In this study, a BiOBr/Ni2P/g-C3N4 heterojunction was constructed using Ni2P as an electron bridge, leading to excellent visible-light photocatalytic performance. The synergistic effects of the Ni2P cocatalyst and S-scheme heterojunction contributed to the enhanced photocatalytic activity.
CHINESE JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Applied
Muhammad Qasim, Maochang Liu, Liejin Guo
Summary: In this study, a P-doped-g-C3N4/Fe2P/red-P ternary composite was constructed through in-situ phosphorization of a Fe2O3@C/g-C3N4 heterojunction. The as-prepared composite exhibited significantly improved photocatalytic activity for pure water splitting under visible light irradiation without the need for noble metal additives. The optimized composite, containing 15 wt% Fe2P, showed the highest activity with a hydrogen production rate 107 and 39 times higher than that of pristine g-C3N4 and P-doped g-C3N4 respectively. Furthermore, this noble-metal-free photocatalyst achieved a solar-to-hydrogen conversion efficiency of about 0.2%.
Article
Chemistry, Multidisciplinary
Fan Yang, Xiaoyu Chu, Jianhui Sun, Yuhang Zhang, Zhijun Li, Haiyue Liu, Linlu Bai, Yang Qu, Liqiang Jing
CHINESE CHEMICAL LETTERS
(2020)
Article
Chemistry, Multidisciplinary
Xiaoyu Chu, Yang Qu, Amir Zada, Linlu Bai, Zhijun Li, Fan Yang, Lina Zhao, Guiling Zhang, Xiaojun Sun, Zhao-Di Yang, Liqiang Jing
Article
Materials Science, Multidisciplinary
Imran Khan, Xiaoyu Chu, Iltaf Khan, Haiyue Liu, Wensen Li, Linlu Bai, Liqiang Jing
MATERIALS RESEARCH BULLETIN
(2020)
Article
Energy & Fuels
Kang Hu, Zhijun Li, Linlu Bai, Fan Yang, Xiaoyu Chu, Ji Bian, Ziqing Zhang, Hui Xu, Liqiang Jing
Summary: In this study, an optimized Ni and Mn comodified photocatalyst with tailored bimetallic molar ratio demonstrated significantly enhanced CO2 conversion rate and quantum efficiency under solar-light irradiation. The synergistic effect between Ni and Mn oxo species was found to improve photoelectron and hole capture along with catalytic activation. Transient-state photoluminescence spectra supported that only a matching Ni:Mn molar ratio leads to the best charge separation and subsequently enhanced photoactivity.
Article
Chemistry, Multidisciplinary
Lina Zhao, Zhenlong Zhao, Yuxin Li, Xiaoyu Chu, Zhijun Li, Yang Qu, Linlu Bai, Liqiang Jing
