Article
Energy & Fuels
Faten Saman, Hasliza Bahruji, Abdul Hanif Mahadi, Celine Hee Se Ling
Summary: The reduction treatment affects the photocatalytic activity of g-C3N4 and Pd/g-C3N4 due to changes in their structural and optical properties. Reduced Pd/g-C3N4 exhibits improved H2 production rate, while g-C3N4 experiences a decline in photocatalytic activity after reduction. The hydrogen production rate follows the order of Pd/g-C3N4/450 degrees C > Pd/g-C3N4/250 degrees C > Pd/g-C3N4 > g-C3N4 > g-C3N4/250 degrees C > g-C3N4/450 degrees C. The presence of Pd reduces electron recombination and enhances charge mobility through Pd-N bond formation, while the formation of terminal -NH2 groups in g-C3N4 hinders electron conductivity due to increased hydrogen bonding. The role of the hydroxyl group on triethanolamine (TEOA) in scavenging photogenerated holes was demonstrated in in-situ photocatalytic hydrogen production.
Article
Chemistry, Physical
Hui Yuan, Fenjian Fang, Jing Dong, Weiwei Xia, Xianghua Zeng, Wenfeng Shangguan
Summary: MoS2/g-C3N4 composites exhibit good activity and stability in photocatalytic hydrogen generation, which can be attributed to their typical layered structure and the presence of few-layer MoS2.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Induja M. Sundaram, Sivaprakash Kalimuthu, Gomathi P. Priya, Karthikeyan Sekar, Saravanan Rajendran
Summary: A novel hierarchical TiO2 spheroids decorated with g-C3N4 nanosheets has been synthesized for efficient solar-driven hydrogen evolution and water depollution photocatalyst. The as-prepared nanocomposite exhibits superior photocatalytic performance compared to pure TiO2 and g-C3N4, and provides new insights for constructing efficient catalysts for solar energy conversion, solar fuels, and other environmental applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Sivasakthi Sethuraman, Amarnath Marimuthu, Radhakrishnan Kattamuthu, Gurunathan Karuppasamy
Summary: The study showed that Nb doping significantly improved the photocatalytic and gas sensing performance of urea-melamine derived g-C3N4, with 200Nb-UMCN nanosheets exhibiting the best performance. These nanosheets demonstrated high degradation rate, hydrogen production, and gas sensing capability. Additionally, their half-curled worm-like structure showed good structural stability during repeated applications.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Hengming Huang, Kan Hu, Chen Xue, Zhiliang Wang, Zhenggang Fang, Ling Zhou, Menglong Sun, Zhongzi Xu, Jiahui Kou, Lianzhou Wang, Chunhua Lu
Summary: A metal-free two-dimensional pi-conjugated hybrid g-C3N4 photocatalyst with tunable band structure was successfully prepared, showing enhanced visible-light H-2 production activity. This study provides a new strategy for constructing efficient photocatalytic water splitting materials by developing metal-free g-C3N4 hybrids.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
Vu Quang Hieu, Truong Chi Lam, Afrasyab Khan, Thu-Thao Thi Vo, Thanh-Quang Nguyen, Van Dat Doan, Dai Lam Tran, Van Thuan Le, Vy Anh Tran
Summary: The research utilized the titanium atom from Ti3C2 MXene to develop TiO2, forming a close heterostructure with semiconductors, while the high surface area of amorphous g-C3N4 contributed to light harvesting during photocatalytic activity. The optimized TTC-450 heterostructure demonstrated a higher H-2 generation efficiency compared to pure g-C3N4 and other samples.
Article
Chemistry, Physical
Kelei Huang, Chunhu Li, Xiuli Zhang, Liang Wang, Wentai Wang, Xiangchao Meng
Summary: Delaminated 2D Ti3C2 MXene nanosheets were used to decorate P-doped tubular g-C3N4, forming a 1D/2D Schottky heterojunction. The optimized composite showed significantly enhanced photocatalytic activity for hydrogen evolution compared to pristine g-C3N4 and PTCN. The enhancement was attributed to the phosphorus doping, unique structure of the heterojunction, and the separation and inhibition of charge carriers. Metallic Ti3C2 acted as an electron sink and photon collector, while the ultrathin Ti3C2 flake served as a co-catalyst for higher reactivity.
GREEN ENERGY & ENVIRONMENT
(2023)
Review
Chemistry, Physical
Yash Rajput, Parveen Kumar, Tian C. Zhang, Dinesh Kumar, Meena Nemiwal
Summary: This review presents the recent advances in g-C3N4-based photocatalysts for hydrogen evolution reactions (HER), including the design and engineering of doped-g-C3N4, composites of g-C3N4, and engineered-g-C3N4. The characteristics and advantages of g-C3N4-based heterojunctions are analyzed, and current challenges and future perspectives are discussed.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Chemistry, Multidisciplinary
Yupeng Xing, Xiaoke Wang, Shuhua Hao, Xueli Zhang, Xiao Wang, Wenxuan Ma, Gang Zhao, Xijin Xu
Summary: g-C3N4 is widely used in photocatalytic applications such as hydrogen production, dye degradation, and toxic gas oxidation due to its excellent performance. Its efficient photocatalytic capacity has attracted extensive attention and research interest. The material's modification enhances its performance, making it a promising candidate for industrial applications in the future.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Physical
Mengxi Tan, Chengye Yu, Junjie Li, Yang Li, Chengdong Tao, Chuanbao Liu, Huimin Meng, Yanjing Su, Lijie Qiao, Yang Bai
Summary: Graphitic carbon nitride (g-C3N4) has promising properties for photocatalysis but faces limitations in light absorption and carrier recombination. Valid approaches like element doping and defect engineering can improve the efficiency of hydrogen production through rational design of photocatalysts.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Zhen Tian, Xi Yang, Yufang Chen, Xuefei Wang, Tifeng Jiao, Wei Zhao, Hao Huang, Jie Hu
Summary: The study successfully prepared a ternary composite material LaFeO3/g-C3N4 nanosheets-graphene, which improved the photocatalytic activity by enhancing the utilization of photogenerated carriers and widening the response range of visible light. This research provides a novel strategy for designing artificial photocatalytic systems with high charge transfer efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Yanhong Wang, Le Gao, Jiaqi Huo, Yawen Li, Weiwei Kang, Chunxiao Zou, Lishan Jia
Summary: In this study, a one-pot in-situ top-down and bottom-up combination strategy was used to construct a novel 0D/1D ordered NiO@La(OH)3 heterostructure derived from NiO@LaNiO3. The NiO@La(OH)3 heterostructure exhibited better charge transport capability compared to its single component and mechanical mixture. Furthermore, NiO@La(OH)3 and g-C3N4 self-assembled into a 0D/1D/2D NiO@La(OH)3/g-C3N4 ternary hierarchical heterostructure photo-catalyst by electrostatic interaction. The synergistic effect of the 0D/1D/2D architecture and ternary heterojunction enhanced the internal separation and interface transmission of photocarriers, resulting in significantly enhanced photocatalytic H2 evolution activity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Yi-Hsuan Lai, Pei -Wen Yeh, Meng-Jyun Jhong, Ping -Chang Chuang
Summary: Production of sustainable H2 fuel by photoreforming plastic waste is an emerging approach to address environmental pollution and energy shortage. The use of a n-p heterojunction g-C3N4/CuFeO2 photocatalyst made of earth-abundant elements effectively suppresses charge recombination and shows promising performance in photoreforming various types of polyester plastics.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Deguang Zhang, Wenbo Liu, Pengyu Guo, Zheng Wang, Haijiao Xie, Runwei Wang, Zongtao Zhang, Shilun Qiu
Summary: This study introduces a coordination process to synthesize g-C3N4@MoS2/C nanosheets with excellent photocatalytic hydrogen production performance. The large surface area of g-C3N4, highly dispersed MoS2 cocatalyst, conductive route of the carbon structure, and the synergy during the charge transfer process contribute to the improved catalytic ability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yaqin Lou, Ting Fei, Yiwei Zhang, Guomeng Dong, Qinghua Deng, Yuming Zhou, Chunfeng Mao
Summary: A high-efficiency and easy-available approach was developed to obtain a ternary heterojunction composite with advanced hydrogen evolution reaction (HER) performance. PdAg bimetallic nanoparticles form a close contact interface between g-C3N4(CN) and Zn0.5Cd0.5S(ZCS), enabling the capture and quick transfer of photogenerated electrons and inhibiting recombination of charge carriers. Additionally, the thin CN layer reduces photocorrosion and enhances the specific surface area of the composite material. The composite material with 30 wt% ZCS and 4 wt% PdAg demonstrates significantly enhanced hydrogen evolution performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Huici Qiao, Jie Yu, Jinwei Lu, Haoyang Bai, Haoquan Liu, Jie Hu, Hao Huang, Bin Wen
Summary: This study unveiled a highly efficient electrocatalyst for ammonia synthesis under ambient conditions, achieving high NH3 yield and Faradaic efficiency in 0.1 M HCl. The catalyst's excellent performance can be attributed to the high proportion of pyridine N and pyrrole N, and the NRR mechanism on the surface of Co4N. Additionally, the Co2C(101) crystal plane enhances the NRR process.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Physical
Xi Yang, Zhen Tian, Yufang Chen, Hao Huang, Jie Hu, Bin Wen
Summary: A series of cobalt-doped g-C3N4 nanosheet photocatalysts with different cobalt doping content were prepared, among which the 1 wt% sample showed excellent photocatalytic activity and stability, with higher H2 evolution and MB degradation performance compared to bulk g-C3N4.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Yufang Chen, Xinghui Ren, Xuefei Wang, Zhen Tian, Xi Yang, Jinwei Lu, Haoyang Bai, Tifeng Jiao, Hao Huang, Jie Hu
Summary: The study successfully constructed Ag-decorated P-doped g-C3N4 nanosheets Schottky junction, which exhibited significantly enhanced visible-light photocatalytic activities, providing a simple approach for designing and developing novel g-C3N4-based materials.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Zhen Tian, Xi Yang, Yufang Chen, Xuefei Wang, Tifeng Jiao, Wei Zhao, Hao Huang, Jie Hu
Summary: The study successfully prepared a ternary composite material LaFeO3/g-C3N4 nanosheets-graphene, which improved the photocatalytic activity by enhancing the utilization of photogenerated carriers and widening the response range of visible light. This research provides a novel strategy for designing artificial photocatalytic systems with high charge transfer efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Electrochemistry
Haoquan Liu, Xinghui Ren, Haoyang Bai, Huici Qiao, Jinwei Lu, Xuefei Wang, Hao Huang, Jie Hu
Summary: In this study, 2LaCo(0.7)Fe(0.3)O(3)/N-doped carbon material was prepared by sol-gel method as an excellent bifunctional oxygen electrocatalyst, showing high catalytic activity and cycling stability, providing a new strategy for the design and preparation of bifunctional electrocatalysts.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Jie Yu, Xinghui Ren, Jinwei Lu, Haoyang Bai, Xuefei Wang, Jie Hu, Hao Huang
Summary: In this study, a highly efficient electrocatalyst for electrochemical nitrogen reduction reaction (NRR) was developed by doping cobalt into porous graphitic carbon nitride (g-C3N4). The resulting catalyst exhibited a high ammonia yield rate and Faradaic efficiency at a low overpotential, surpassing previous reports on similar catalysts. The study also revealed the mechanism of charge transfer and band gap modification after cobalt doping.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Yu Sun, Jing Wu, Yong Xie, Xin Wang, Kaikai Ma, Zhen Tian, Zheng Zhang, Qingliang Liao, Wenhao Zheng, Zhuo Kang, Yue Zhang
Summary: This study investigates the structural evolution and catalysis pathway evolution of a model catalyst during water oxidation. The results show that the optimization of catalyst structure and activity can be achieved through doping, leading to enhanced catalysis activity.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Ceramics
Xi Yang, Wenjun Chen, Yan Liu, Yanming Yu, Bo Liang, Jie Hu, Hao Huang
Summary: Photoelectric catalytic oxidation (PEC) is a promising strategy for degrading antibiotic refractory pollutants. In this study, a flower-like Co3O4/CoO catalyst was constructed, and its PEC performance was investigated. The Co3O4/CoO catalyst showed a significantly higher removal rate of tetracycline (TC) compared to pure Co3O4 and CoO due to the establishment of an electric field and the synergistic effect between electrocatalytic and photocatalytic processes.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Xuefei Wang, Yu Han, Yan Liu, Yanming Yu, Jun Ma, Tao Yang, Jie Hu, Hao Huang
Summary: In this study, a CoSx/MoS2/CN double heterojunction was constructed by growing MoS2 and CoSx (ZIF67 derivatives) as cocatalyst on the surface of g-C3N4 semiconductor in situ. The activities of photocatalytic hydrogen evolution and degradation of MB were investigated. The hydrogen production rate of 5%CoSx/MoS2/CN-2 photocatalyst is 9800 mmol h-1 g-1, which is about 6.5 times higher than CN, 46 times higher than MoS2 and 98 times higher than CoSx, respectively. Under natural sunlight and simulated sunlight, the degradation efficiency of MB is 99.95% and 99.50% after 4 hours, respectively. This study provides a new idea for the development of steady, high-efficiency, and sustainable photocatalytic catalysts for visible light.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Environmental
Huici Qiao, Yu Han, Lin Yao, Xin Xu, Jun Ma, Bin Wen, Jie Hu, Hao Huang
Summary: This work presents the use of zero valent iron particles dispersed on the surface of hollow carbon spheres as an electrocatalyst for nitrogen reduction. The Fe-HCS catalyst exhibits high nitrogen adsorption and electron transfer efficiency, leading to a significantly improved faraday efficiency and NH3 yield compared to most reported iron-based catalysts. The study also demonstrates the achievement of high power density through a Zn-N2 battery. Overall, it provides valuable guidance for the design of zero valent metal catalysts and the development of electro-chemical nitrogen fixation and energy production.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Haoyang Bai, Yu Han, Xintao Rong, YanMing Yu, Jun Ma, Tao Yang, Hao Huang, Jie Hu
Summary: Element doping is utilized to modify the perovskite oxide electrocatalyst BaCoO3-d, with oxygen, boron, and A-site doped with fluorine, iron, and strontium respectively. The effects of different doping sites on water splitting performance are investigated. Results indicate that fluorine doping generates more oxygen vacancies and increases the valence state of cobalt. Partial substitution of cobalt by iron narrows the bandwidth and enhances conductivity. Strontium doping in the A-site changes the crystal structure and exhibits metallic properties. This study provides an effective approach for designing perovskite oxide materials for efficient electrocatalytic water splitting.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Xi Yang, Wenjun Chen, Yan Liu, Bo Liang, Jie Hu, Hao Huang
Summary: A novel Co3O4/CoO-CNNS ternary composite photocatalyst with a double Z-scheme charge transfer mechanism is prepared by electrostatic self-assembly method. It can effectively promote the separation and transmission of photo-induced carriers and provide more active sites for photocatalytic hydrogen evolution. This work offers new insights for the design and development of photocatalysts with a double Z-scheme charge transfer mechanism.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
