Article
Engineering, Environmental
Qi Wang, Biao Xue, Meng Tan, Ningyi Li, Hao Zhou, Hao Du, Guoxiang Yang, Huaze Zhu, Qiang Li
Summary: Heterogeneous photocatalysis has gained extensive attention in environmental remediation. The formation of heterojunction can greatly improve the charge separation efficiency and light response of single semiconductor. Ternary heterojunctions inhibit the recombination of photogenerated charge carriers and show high photocatalytic efficiency. This research provides guidance for the rational design of multi-components heterojunction for photocatalytic environmental remediation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Hind Alshaikh, L. A. Al-Hajji, M. H. H. Mahmoud, Adel A. Ismail
Summary: The mesoporous Ag3VO4/C3N4 photocatalysts exhibited significantly higher photocatalytic Hg(II) reduction performance compared to pristine g-C3N4 and Ag3VO4 NPs. The synthetic mesoporous 2.4%Ag3VO4/C3N4 photocatalyst showed the best photoreduction performance among all the synthesized nanocomposites. Through the synergetic effect of S-scheme heterojunction structure, high surface area, and promotion light harvest, the mesoporous Ag3VO4/C3N4 photocatalysts achieved efficient photoinduced charges separation to enhance Hg(II) reduction.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Yanyan Cui, Ping Zhang, Mengke Li, Chengcheng Lin, Yaling Wang
Summary: In this study, a p-n junction photocatalyst AgVFe-4 was prepared via a simple hydrothermal method, exhibiting excellent photocatalytic performance. The composite structure showed a larger surface area, lower photoluminescence intensity, and higher photogenerated carriers separation efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Mai Hung Thanh Tung, Tran Thi Thu Phuong, Dinh My Ngoc Tram, Do Minh The, Nguyen Vu Ngoc Mai, Tran Thi Thu Hien, Le Thi Cam Nhung, Nguyen Thi Thanh Binh, Cao Van Hoang, Dao Ngoc Nhiem, Thanh-Dong Pham, Nguyen Thi Dieu Cam
Summary: In this study, Ag3VO4 was successfully hybridized with WO3 to form AW heterojunction, and rGO was used as a substrate to further enhance its electron-hole separation efficiency and surface area. The synthesized AW/rGO sample exhibited novel photocatalytic degradation of amoxicillin under visible light excitation and demonstrated excellent recycling ability.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Materials Science, Ceramics
Yan Xing, Xichuan Lu, Yi Li, Bozhi Yang, Yujia Huang, Mengfei Zhang, Jing Cheng, Xin Min, Wei Pan
Summary: A pH-adjusted one-step method was used to synthesize Ag4V2O7/Ag3VO4 heterojunction with a well-tuned 0D/1D hierarchical structure. The heterojunction exhibited remarkable photocatalytic activity and stability, with a high reaction rate under visible light irradiation.
JOURNAL OF ADVANCED CERAMICS
(2022)
Article
Chemistry, Physical
Yuchun Ren, Tao Gong, Songlin Tan, Ming Chen, Fei Zhou, Yongjun Lin, Li Yang, Qiong Peng
Summary: The properties and interactions of g-C3N4, Bi3NbO7, and g-C3N4/Bi3NbO7 photocatalysts were revealed through various tests. g-C3N4/Bi3NbO7 has a lower band gap and higher absorption of visible light, as well as higher efficiency in separating photogenerated electron-hole pairs. In the photocatalytic reduction of Cr(VI), g-C3N4/Bi3NbO7 is more effective than pure g-C3N4 and Bi3NbO7.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Yu Luo, Yuanfang Lin, Zonglin Weng, Bin Han, Yang Zhou, Xinwen Ou, Jin Jiang
Summary: By grafting thiophene (TP) onto the edge of g-C3N4, a donor-acceptor-engineered catalyst (g-C3N4-TP) is developed for efficient H2O2 production. The optimized g-C3N4-TP exhibits a significantly enhanced H2O2 production rate compared to pristine g-C3N4, attributed to the introduced TP units that promote electron-hole separation, alter O2 adsorption mode, and reduce energy barriers for H2O2 production. This work provides insights into O2 adsorption and conversion on g-C3N4 and suggests a new approach for efficient H2O2 production via rational design of donor-acceptor-engineered photocatalysts.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Tingting Xu, Zhonghui Xia, Hongguan Li, Ping Niu, Shulan Wang, Li Li
Summary: This study reports the construction of a crystalline g-C3N4/g-C3N4-xSx heterostructure to improve the charge separation and transfer in photocatalysts. The prepared g-C3N4/g-C3N4-xSx exhibited remarkable photocatalytic performance and superior piezocatalytic activity. The findings provide new strategies for the design of efficient polymeric photocatalysts and highlight the piezocatalytic studies of g-C3N4.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Engineering, Environmental
Jing Chen, Haitao Zhu, Qifang Ren, Shaohua Chen, Yi Ding, Zhen Jin, Chunyu Xiong, Wanmi Guo, Xinyu Jia
Summary: In this study, Ag3VO4/Bi2MoO6/diatomite ternary composite was synthesized and used to degrade atrazine under visible light irradiation. The prepared catalysts were characterized and the effects of different factors on ATZ removal were studied. The stability and reusability of the composite material were verified, and the intermediate products and possible transformation pathway were detected. The quenching experiment and EPR test showed the promoting effect of various radicals on ATZ degradation. The reasonable reaction mechanism of removing ATZ was proposed based on comprehensive analysis.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Zhixin Chen, Boyuan Ning, Yanqing Cai, Minghua Liu, Pingfan Xu, Peikun Zhang, Guangcan Xiao, Yunhui He
Summary: In this study, a highly efficient AgFeO2/Ag3VO4 photocatalyst was successfully fabricated, which showed significant degradation capability towards Levofloxacin. The formation of p-n heterojunction between AgFeO2 and Ag3VO4 was found to enhance the separation and transfer of photogenerated charge carriers. The photocatalytic degradation pathway of Levofloxacin was comprehensively determined using LC-MS analysis.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(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.
Article
Chemistry, Physical
Jaspal Singh, Sophia Akhtar, Trang Thu Tran, Jeongyong Kim
Summary: In this study, C3N4-functionalized MoS2 nanoflowers were fabricated using a hydrothermal method and applied for the removal of organic pollutants from water. The heterojunction formation between MoS2 and C3N4 nanosheets was confirmed, and the as-prepared 2D C3N4-MoS2 nanohybrids exhibited significant photocatalytic performance. The highest heterojunction density of the nanohybrids showed enhanced photodecomposition performance due to effective charge separation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Fellipe Magioli Cadan, Caue Ribeiro, Eduardo Bessa Azevedo
Summary: This study optimized the synthesis of g-C3N4 using the Response Surface Methodology and successfully prepared g-C3N4:WO3 heterojunctions, demonstrating good materials homogenization and high photocatalytic activity. A mechanism for the heterostructure photocatalysis was proposed based on theoretical and experimental results.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Zhuhuan Jiang, Haitao Zhu, Wanmi Guo, Qifang Ren, Yi Ding, Shaohua Chen, Jing Chen, Xinyu Jia
Summary: A new ternary composite material, Ag3VO4/g-C3N4/diatomite, was synthesized and studied for its performance in photocatalytic reduction of Cr(vi). The results showed a significant enhancement in degradation efficiency under visible light irradiation. Furthermore, cyclic degradation testing revealed the composite material's stable performance.
Article
Chemistry, Inorganic & Nuclear
Ming Gao, Linlin Sun, Changchang Ma, Xin Li, Haopeng Jiang, Dong Shen, Huiqin Wang, Pengwei Huo
Summary: The Z-scheme g-C3N4/Ag3VO4/reduced graphene oxide (rGO) photocatalysts prepared by a hydrothermal process exhibit a unique 2D-0D-2D ternary sandwich structure, which enhances the separation and transmission capabilities of photogenerated carriers, leading to improved CO2 photoreduction efficiency.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Zhaolong Wang, Hanxiang Chen, Jian Bao, Yanhua Song, Xiaojie She, Guoai Lv, Jiujun Deng, Huaming Li, Hui Xu
Summary: The development of a bifunctional electrode material with amorphous NiFeMo films grown on a conductive nickel foam substrate has significantly improved the overall water splitting performance, allowing for efficient hydrogen production to alleviate carbon emissions.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Ganghua Zhou, Zhou Zhou, Yu Xia, Weiqin Yin, Jianhua Hou, Xingwang Zhu, Jianjian Yi, Shengsen Wang, Xin Ning, Xiaozhi Wang
Summary: In this work, a low-cost and high-efficiency photocatalyst was synthesized through one-pot hydrothermal method. The photocatalytic activities of the synthesized NiS-loaded S-doped carbon nitride photocatalysts were evaluated. The optimal photocatalyst showed outstanding performance in organic dye degradation and hydrogen production under visible-light irradiation. The improved photocatalytic activity was attributed to the expanded light absorption and facilitated charge carrier separation or transportation under the synergistic effect of S doping and NiS loading.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Jinyuan Liu, Shumin Zhu, Bin Wang, Rong Wang, Ruizhe Yang, Xingwang Zhu, Yanhua Song, Hui Xu, Huaming Li
Summary: In this paper, Co, N-co-doped graphene modified thin mesoporous carbon nitride (Co-NG/TMCN) was synthesized through electrostatic adsorption treatment. Extensive characterization was used to explore the morphology, structures and optical properties of the as-prepared photocatalysts. The 10 wt % Co-NG/TMCN exhibited a high photocatalytic hydrogen evolution rate (2949 μmol g(-1)) within 4 h visible light irradiation, which was about 113 times higher than that of the pure TMCN (26 μmol g(-1)). Co-NG material with excellent electrical conductivity played a major role in accelerating charge transfer from TMCN material to cobalt atomic clusters, effectively improving the photo-catalytic hydrogen evolution performance of Co-NG/TMCN material. Therefore, a feasible approach for doping transition metal clusters to enhance photocatalytic activity was provided.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Yanhua Song, Chengqian Zhou, Zeen Zheng, Peipei Sun, Yuanbin She, Fengkang Huang, Zhao Mo, Junjie Yuan, Huaming Li, Hui Xu
Summary: Uniform porous carbon nitride nanotubes were successfully synthesized through supramolecular self-assembly, providing large specific surface area and superior electron transport performance. The nanotubes exhibited significant adsorption of O2 according to temperature programmed desorption (TPD) test and density functional theory (DFT) calculation. The rotating ring-disk electrode (RRDE) experiments showed that the porous carbon nitride nanotubes greatly improved the selectivity of 2e- oxygen reduction reaction (ORR), resulting in a higher yield of H2O2. This research offers a feasible strategy for designing photocatalytic materials with high 2e- ORR selectivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Ruyu Yan, Xinyi Liu, Haijie Zhang, Meng Ye, Zhenxing Wang, Jianjian Yi, Binxian Gu, Qingsong Hu
Summary: In this study, carbon quantum dots (CQDs) modified PbBiO2I photocatalyst was synthesized for the first time using an in-situ ionic liquid-induced method. The CQDs decoration effectively addressed the challenges of inefficient near-infrared photon capture, undesirable carrier recombination, and insufficient reaction sites, leading to significantly enhanced photocatalytic performance for organic contaminant degradation.
Article
Engineering, Chemical
Puyang Zhou, Feng Chen, Xinmiao Su, Tingting Zhang, Suci Meng, Meng Xie, Yanhua Song, Xiaorui Yan, Yuanguo Xu
Summary: Novel Ag2O-BaFe12O19/C3N4 composites were prepared via grind, solvothermal and deposition-precipitation methods. The characterization showed that Ag2O was firmly anchored to the BaFe12O19/C3N4 and the formation of the composite effectively promoted charge transfer, enhancing photocatalytic performance. The photocatalyst exhibited better activity than the pure component in the degradation of tetracycline under visible light irradiation. The pH value was found to significantly affect the degradation rate, with the highest rate observed at pH = 7.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Chemistry, Physical
Yihan Yang, Xuyu Wang, Yu Xia, Minfeng Dong, Zhou Zhou, Guoxiang Zhang, Li Li, Qingsong Hu, Xingwang Zhu, Jianjian Yi
Summary: This study synthesized CdS nanorods and CdS nanosheets with exposed {100} and {0 0 1} facets respectively, and demonstrated the different roles of different facets in photocatalytic performance. It was found that pristine CdS nanorods showed higher hydrogen evolution rate than CdS nanosheets. However, when integrated with Pt cocatalyst, the enhancement in hydrogen evolution rate was significantly lower for CdS nanorods compared to CdS nanosheets. The adsorption of protons and interfacial charge migration played important roles in determining the performance of CdS nanorods and nanosheets.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Qing Liu, Xiaoyang Wang, Xingwang Zhu, Penghui Ding, Kang Zhong, Jinyuan Liu, Yingjie Hua, Qingsong Hu, Jianjian Yi, Hui Xu, Xiaozhi Wang, Jianning Ding
Summary: In this study, oxygen-linked and brown graphitic carbon nitride (GACN) with a different structure and higher photoelectronic activity compared to BulkCN was successfully prepared. GACN exhibited strong photocatalytic CO2 reduction capacity and significantly improved photocatalytic activity compared to BulkCN. Density functional theory calculations confirmed that the oxygen atoms introduced by GACN enhance CO2 photoreaction reactivity, electronic activity, and reduce the reaction energy barrier.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Yuan Xu, Jie Ouyang, Lingyi Zhang, Huixia Long, Yanhua Song, Yanjuan Cui
Summary: Exploiting non-noble metallic cocatalysts is important for photocatalytic H2 production. In this study, metallic 1T-rich MoS2 nanoparticles were embedded in C3N4 hollow spheres using an in-situ transformation method. The embedded hollow sphere structure enhances heterojunction interaction and the 1T-rich MoS2 cocatalyst promotes electron transfer and improves photogenerated carrier separation and transmission, leading to enhanced H2 production. The CN/MoS2-1 catalyst exhibits significantly improved H2 production rate (441.3 μmol g-1 h-1) and maintains outstanding stability, suggesting potential for future catalyst-cocatalyst system design to enhance photocatalytic H2 production.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Xifang Ruan, Aiyun Sun, Ting Zhou, Haijie Zhang, Meng Ye, Xingwang Zhu, Jianjian Yi, Qingsong Hu, Binxian Gu
Summary: Carbon quantum dots (CQDs) modified PbBiO2Cl/PbBiO2Br nanocomposite photocatalyst was developed through in-situ ionic liquids induced synthesis, which effectively overcame the limitations of photon absorption, recombination of photoinduced hole-electron pairs, and insufficient utilization of charge carriers, leading to significantly enhanced antibiotics degradation efficiency.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Materials Science, Multidisciplinary
Rui Wu, Fangyan Chen, Jietong Yang, Yanhua Song, Ji Hua, Shenggeng Zhao, Yubin Tang
Summary: A core-shell Z-scheme heterojunction In2O3@BiFeO3 was synthesized via a facile hydrothermal method, showing excellent photocatalytic performance for the degradation of tetracycline in wastewater under visible light. The enhanced photocatalytic activity is attributed to the improved light harvesting and the effective separation of photogenerated electron-hole pairs. This study provides a new strategy for constructing promising visible-light-driven photocatalysts for environmental remediation.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Zhiqiang Zhu, Fangyan Chen, Shenggeng Zhao, Yanhua Song, Yubin Tang
Summary: Constructing core-shell heterojunction and designing hierarchical structures are effective strategies for enhancing the activity and stability of photocatalysts. A novel hierarchical core-shell Z-scheme heterojunction FeOV4@ZnIn2S4 was prepared, and the formation of the hierarchical core-shell heterostructure between FeVO4 and ZnIn2S4 improved light-harvesting ability and promoted the separation of photoinduced electron-hole pairs. The prepared FeOV4@ZnIn2S4 exhibited superior photocatalytic activity toward tetracycline, with a removal efficiency of 90.8% within 120 min.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Engineering, Chemical
Liquan Jing, Meng Xie, Yuanguo Xu, Chun Tong, Yanhua Song, Xia Du, Heng Zhao, Na Zhong, Huamin Li, Ian D. Gates, Jinguan Hu
Summary: A three-dimensional carbon nitride co-modified with oxygen doping and nitrogen vacancies was synthesized through hydrothermal and thermal polymerization reactions. The electronic structure of carbon and nitrogen was confirmed using solid-state nuclear magnetism and electron loss energy spectroscopy. The modified carbon nitride exhibited enhanced photocatalytic activity for the degradation of organic pollutants and hydrogen production through selective oxidation of biomass.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Review
Chemistry, Physical
Jianjian Yi, Guoxiang Zhang, Yunzhe Wang, Wanyue Qian, Xiaozhi Wang
Summary: Phase engineering is a novel strategy for modulating the electronic states and catalytic functions of nanomaterials. Recently, there has been great interest in phase-engineered photocatalysts, including unconventional, amorphous, and heterophase phases. By manipulating the phase structure of photocatalytic materials, such as semiconductors and cocatalysts, the light absorption range, charge separation efficiency, and surface redox reactivity can be effectively controlled, leading to different catalytic behaviors. This review provides critical insights into the classification of phase engineering for photocatalysis and discusses the state-of-the-art development, synthesis and characterization methodologies, as well as the correlation between phase structure and photocatalytic performance. The opportunities and challenges in phase engineering for photocatalysis are also discussed.
Article
Engineering, Electrical & Electronic
Jietong Yang, Fangyan Chen, Rui Wu, Shenggeng Zhao, Ji Hua, Yanhua Song, Yubin Tang
Summary: The construction of heterojunction and surface defect engineering can improve the photocatalytic performance of semiconductors. In this study, a novel Z-scheme heterojunction DyVO4/MIL-53(Fe) composed of DyVO4 with oxygen vacancies (OVs) and MIL-53(Fe) was fabricated. The prepared photocatalyst exhibited excellent visible light response and promoted transfer and separation of photogenerated electrons and holes, resulting in enhanced photocatalytic activity for tetracycline degradation.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
