Article
Chemistry, Multidisciplinary
Z. Mo, G. Wu, P. Yan, X. Zhu, J. Qian, Y. Lei, L. Xu, H. Xu, H. Li
Summary: This study reports the successful synthesis of ultrathin oxygen-engineered g-C3N4 (UOCN) by a bottom-up strategy using a gaseous sacrificial agent-induced template. The UOCN exhibits efficient separation of photogenerated carriers, enhanced utilization of sunlight, and improved photocatalytic hydrogen evolution. The photocatalytic performance of UOCN is significantly better than that of bulk carbon nitride, and the H2 evolution rate is extended to longer wavelengths. This work presents a practical strategy for the design of innovative photocatalysts for energy innovation.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Guanchao Wang, Ying Ma, Ting Zhang, Yuefeng Liu, Baojun Wang, Riguang Zhang, Zhongkui Zhao
Summary: This study presents a straightforward approach to achieve single Ni sites (Ni-1-N2S) with unique local coordination structure, which lead to a high hydrogen evolution rate of 1095 mmol/g h and an apparent quantum yield of 4.1% at 420 nm. This work paves a pathway for designing highly efficient non-precious transition metal cocatalysts for photocatalytic hydrogen evolution.
Article
Engineering, Chemical
Yang Sun, Vanish Kumar, Ki-Hyun Kim
Summary: Photocatalytic hydrogen evolution using graphitic carbon nitride (g-C3N4) is a feasible and environmentally friendly technology to address the energy crisis. This review discusses the advantageous photocatalytic properties of g-C3N4 for hydrogen generation and describes its mechanism and role in the photocatalytic process. The applicability of g-C3N4-based materials is further assessed based on figure of merit (FoM), and the most effective strategies identified include dye conjugation and metallic-co-catalyst doping of g-C3N4.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Zhao Mo, Zhihuan Miao, Pengcheng Yan, Peipei Sun, Guanyu Wu, Xingwang Zhu, Cheng Ding, Qiang Zhu, Yucheng Lei, Hui Xu
Summary: The ideal photocatalyst for photocatalytic water splitting should have strong light absorption, fast charge separation/transfer ability, and abundant active sites. Heteroatom doping offers a promising approach for optimizing photocatalytic activity. In this study, boron (B) and sulfur (S) dopants were simultaneously introduced into graphitic carbon nitride (g-C3N4) nanotubes using a supramolecular self-assembly strategy. The developed B and S co-doped g-C3N4 nanotubes exhibited outstanding photocatalytic performance, achieving a conversion rate of H2O to H-2 of 9.321 mmol g(-1)h(-1), with an external quantum efficiency of 5.3% under irradiation at λ = 420 nm. The introduction of B dopants facilitated H2O adsorption and interatomic electron transfer, while S dopants promoted the oxidation ability of g-C3N4 and inhibited recombination. Furthermore, the simultaneous introduction of B and S optimized the electronic and energy level structures of g-C3N4 for efficient charge transfer, ultimately maximizing photocatalytic performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Energy & Fuels
Amir Al-Ahmed
Summary: Global warming and environmental issues are driving the adoption of clean energy sources, with hydrogen being considered one of the most promising options. Photocatalytic water splitting using graphitic carbon nitride has been shown to be a cost-effective approach with potential for high performance.
Article
Chemistry, Physical
Yun Zheng, Lili Zhang, Yuke Li, Yayun Wang, Jingling Chen, Bizhou Lin, Yanzhen Zheng, Lin Cheng, Sibo Wang, Yilin Chen
Summary: Researchers have successfully synthesized a novel D-A conjugated polymer, T-CN, and demonstrated its superior performance in visible-light photocatalytic reactions, including hydrogen evolution and carbon dioxide reduction. The successful preparation of T-CN paves the way for the rational design of efficient polymeric nanomaterials.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Feng Liu, Wencheng Li, Lu Wang, Xi Rao, Shaohui Zheng, Yongping Zhang
Summary: Doping sulfur and strontium elements in graphitic carbon nitride can improve its photocatalytic activity by narrowing the band gap, forming an intraplane heterojunction, enhancing light absorption and carrier transportation, increasing molecular buckling and specific surface area. These factors synergistically contribute to the improved performance of graphitic carbon nitride.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Xin Bai, Man Li, Jinlun Li, Xi Rao, Shaohui Zheng, Yongping Zhang
Summary: The study showed that sulfur and yttrium co-doped graphitic carbon nitride photocatalyst exhibits outstanding photocatalytic performance due to the doping improving the separation and migration of electron-hole pairs, narrowing the band gap, and increasing visible light absorption.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Haibing Che, Peng Hu, Jinshu Wang, Yongli Li, Wenyuan Zhou, Xiaobo Chen
Summary: A synergistic strategy integrating elemental doping and defect engineering has been developed to modulate the electronic and bandgap structure of g-C3N4. This strategy significantly improves the photocatalytic activity of g-C3N4 for hydrogen evolution, showing a twentyfold enhancement compared to pristine g-C3N4.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Miao Ren, Xueyan Zhang, Yunqing Liu, Guang Yang, Lang Qin, Jiaqi Meng, Yihang Guo, Yuxin Yang
Summary: In this study, a palladium-single-atom-coordinated cyano-group-rich g-C3N4 (Pd/D-N-UCN) was synthesized to improve the photocatalytic hydrogen evolution activity. The formation mechanism of Pd single atoms on g-C3N4 nanosheets and the coordination bonding of cyano groups with Pd atoms were proposed. The synthesized 0.16%Pd/D-N-UCN exhibited enhanced photocatalytic hydrogen production activity compared to electrostatically stabilized Pd single atoms.
Article
Chemistry, Physical
Jinyu Gao, Mingxia Li, Hui Chen, Liping Guo, Zhenzi Li, Xuepeng Wang
Summary: Graphite carbonitride (g-C3N4) has been extensively studied as a new photocatalyst. The one-dimensional hollow structure of g-C3N4 nanotubes promotes carrier migration, leading to improved electron-hole separation efficiency. However, the collapse of nanotubes during long-term thermal polymerization process results in decreased photocatalytic performance, which needs to be further optimized.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Qiaohong Zhu, Zehong Xu, Bocheng Qiu, Mingyang Xing, Jinlong Zhang
Summary: This review summarizes recent advances in high-performance cocatalysts based on g-C3N4 towards hydrogen evolution reaction (HER), discussing the functions, design principles, classifications, modification strategies of cocatalysts, and their intrinsic mechanisms for enhancing photocatalytic HER activity. Furthermore, the pivotal challenges and future developments of cocatalysts in the field of HER are also proposed.
Review
Chemistry, Multidisciplinary
Xueze Chu, C. I. Sathish, Jae-Hun Yang, Xinwei Guan, Xiangwei Zhang, Liang Qiao, Kazunari Domen, Shaobin Wang, Ajayan Vinu, Jiabao Yi
Summary: Due to the depletion of fossil fuels and their-related environmental issues, the search for sustainable, clean, and renewable energy sources has become urgent. One of the most promising clean energies is hydrogen. Among the various methods of hydrogen production, photocatalysis using carbon nitride has gained significant attention due to its low cost, abundance, appropriate bandgap, and high performance. This review discusses the carbon nitride-based photocatalytic hydrogen production system, including the catalytic mechanism and strategies for improving performance. It also outlines current trends in screening and designing superior photocatalytic hydrogen production systems.
Article
Chemistry, Physical
Xing Liu, Tingting Zhang, Lu Zhang, Yudong Li, Jian Zhang, Yunchen Du, Debin Xia, Kaifeng Lin
Summary: In this study, a heterostructure of ultra-thin graphite carbon nitride supported lanthanum oxide nanosheets was successfully constructed, which exhibited enhanced photocatalytic hydrogen evolution rate through strong electron interaction and effective charge separation.
Article
Chemistry, Physical
Xiaobo Wu, Huiqing Fan, Weijia Wang, Lin Lei, Xinye Chang
Summary: In this study, an ordered and one-dimensionally ultralong carbon nitride nanotube (CN-NT) was prepared via in-air chemical vapor deposition (CVD) using SiO2 nanofiber templates, leading to significant enhancement in photocatalytic hydrogen evolution rate. The obtained CN-NT sample exhibited excellent photocatalytic activity with a noticeable quantum efficiency of 6.49% and lower recombination rate of photogenerated electrons, attributed to increased specific surface area, faster electron transfer pathway, advanced light absorption ability.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Kui Li, Miao Sun, Wei-De Zhang
Article
Chemistry, Physical
Xin Xie, Yunhua Yang, Yong-Hao Xiao, Xiaomo Huang, Qingshan Shi, Wei-De Zhang
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(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
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)