Article
Chemistry, Physical
Meng Lan, Nan Zheng, Xiaoli Dong, Hongchao Ma, Xiufang Zhang
Summary: Bi-decorated BiOBr microspheres with oxygen vacancies were fabricated using a solvothermal strategy, serving as effective photocatalysts for nitrogen fixation. The hetero-structured microspheres exhibited superior visible-light utilization and effective separation of photoexcited charge carriers, resulting in significantly enhanced N-2 fixation performance compared to pure BiOBr. This study offers a simple and energy-efficient method for stable photocatalytic N-2 fixation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Chongshang Guan, Tian Hou, Wuyang Nie, Qian Zhang, Libing Duan, Xiaoru Zhao
Summary: Different BiOBr powders (without and with Zn doping) were prepared and their properties were studied. Zn doped BiOBr exhibited higher carrier transportation ability, which improved the photocatalytic performance. The enhanced performance was attributed to the improved energy band structure and increased oxygen vacancy generation caused by Zn doping. The Zn doping synergized with oxygen vacancies to enhance carrier separation and transfer, leading to 1.75 times higher CH4 generation during CO2 photocatalytic reduction.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Sitong Liu, Guangmin Ren, Xinyu Gao, Zizhen Li, Liang Wang, Xiangchao Meng
Summary: A novel Bi(OH)(3) photocatalyst with suitable band positions, abundant alkaline groups, and oxygen vacancies was synthesized and demonstrated efficient activity in photocatalytic CO2 reduction and phenol decomposition.
CHEMICAL COMMUNICATIONS
(2022)
Article
Engineering, Chemical
Tian Fu, Guofu Huang, Kun Liu, Caimei Lu, Linxing Wang, Weicheng Xu, Xueding Jiang, Zhangfa Tong, Biao Han, Hanbing Zhang
Summary: A multi-functional integrated magnetic bentonite/BiOBr-Bi photocatalyst was designed for effective antibiotic removal. The magnetic bentonite as a carrier played a key role in facilitating the formation of the hierarchical structure of BiOBr and promoting the generation of active surface and oxygen vacancies. The photocatalyst exhibited excellent catalytic performance and cycling stability, effectively degrading antibiotics.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Ze Zhang, Jingyu Sun, Xue Chen, Guizhu Wu, Zhengguo Jin, Donggang Guo, Lu Liu
Summary: The Ni/rGO nanocomposite exhibited highly effective antibacterial efficacy through the synergistic effects of photothermal therapy and oxidative damage, making it a promising disinfection material for water pollution purification caused by pathogenic bacteria.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Zhongxia Liu, Yurong An, Weibin Zhang, Lujun Zhu, Gangqiang Zhu
Summary: The photocatalytic removal of NO with high selectivity and inhibition of NO2 production has been achieved by synthesizing Au/Bi4Ti3O12 heterojunctions. This is accomplished through the promotion of carrier separation by the built-in electric field of the heterojunction, as well as the transfer of electrons from BTO to Au nanoparticles. Additionally, the surface plasmon resonance effect of the Au nanoparticles further enhances the absorption of visible light, resulting in an excellent NO removal rate of about 48%.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Xibao Li, Bangbang Kang, Fan Dong, Fang Deng, Lu Han, Xiaoming Gao, Jilin Xu, Xifeng Hou, Zhijun Feng, Zhi Chen, Lingling Liu, Juntong Huang
Summary: A novel BPQDs/OV-BiOBr S-scheme heterojunction photocatalyst with tight interfacial contacts was successfully prepared. The photocatalyst showed excellent degradation activity for OFLO under visible light. The special arrangement of oxygen vacancies on OV-BiOBr was cleverly utilized to create an oxygen-deficient environment for BPQDs, enhancing the contact and stability of the heterojunction interface. The deposition of Bi metal on OV-BiOBr generated a local surface plasmon resonance effect, significantly improving the photoresponsiveness of the catalyst. The internal electric field direction and the electron transfer mechanism of the S-scheme heterojunction were analyzed in detail using density functional theory calculation and experiment.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Jinlin Zhao, Zerui Miao, Yanfeng Zhang, Guangyu Wen, Lihu Liu, Xuxu Wang, Xingzhong Cao, Baoyi Wang
Summary: In this study, hierarchical BiOBr hollow microspheres were synthesized and exhibited excellent performance for CO2 photoreduction. The synergistic effect of the hollow structure with oxygen vacancies played a vital role in enhancing the overall efficiency. This work provides a new opportunity for designing high efficiency catalysts for CO2 photoreduction by morphology engineering with defects at the atomic level.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Xinhui Ye, Yu Li, Peipei Luo, Bingcai He, Xinxing Cao, Tongbu Lu
Summary: This study demonstrates the use of iron sites immobilized on defective BiOBr nanosheets as an efficient and selective photocatalyst for the activation of O2 to O1(2), achieving high conversion rates and selectivity in various organic oxidation reactions. The Fe3+ species anchored by oxygen vacancies facilitate charge separation and migration, promote effective adsorption of O2, and boost the quantum yield of excited triplet state, leading to enhanced photocatalytic performance. This work highlights the important role of metal sites anchored on semiconductors in regulating charge/energy transfer during heterogeneous photocatalysis and provides a new approach for designing high-performance photocatalysts.
Article
Chemistry, Physical
Xianzi Li, Shaodong Sun, Xin Zhang, Xiaochuan Zhang, Jie Cui, Qing Yang, Shuhua Liang
Summary: The study successfully synthesized mesocrystalline BiOCl crystals with porous nanosheets using a facile method, which can enhance the visible-light-driven photocatalytic activity. Experimental results and theoretical calculations indicate that the presence of defective oxygen vacancies helps in tuning the energy band structure, improving light absorption, prolonging the lifetime of photogenerated charge carriers, and enhancing oxidation activity.
JOURNAL OF MATERIOMICS
(2021)
Article
Engineering, Environmental
Lizhen Lu, Haoyu Zhang, Zhe Sun, Jinghui Wang, Haolin Wang, Jinbo Xue, Qianqian Shen, Qi Li
Summary: 2D ultrathin BiOBr nanosheets exhibit a photocatalytic memory effect, creating stable oxygen vacancies through visible light irradiation and enhancing their performance in photocatalysis, piezocatalysis, and photo-piezocatalysis.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Zhouzheng Jin, Jingru Li, Yiming Zhang, Dan Liu, Hui Ding, Bhekie B. Mamba, Alex T. Kuvarega, Jianzhou Gui
Summary: Simultaneously integrating heterogeneous interface, element doping, and metal decorating is an effective strategy for enhancing visible-light-driven photocatalytic activity. In this study, a facile solvothermal route was employed to synthesize Ni-doped BiOBr/Bi-0 with ZnO 3D hierarchical heterojunction (Z@B/Bi-Ni). The optimized Z@B/Bi-Ni photocatalysts exhibited remarkable catalytic performance, outperforming other photocatalysts, towards the degradation of tetracycline solution under visible light. The enhanced photocatalytic mechanism was attributed to the unique morphologies, surface plasmonic resonance effect, and Ni doping in Z@B/Bi-Ni, which were elucidated by a series of experiments, characterization, and DFT calculations. This research provides new insights for the design of hierarchical heterojunction photocatalysts.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Yajun Zhou, Mengyuan Gao, Rongliang Liu, Zhigang Zhang, Xiaoning Tang
Summary: Bismuth modified bismuth iodide flower-like microspheres with rich oxygen vacancies were prepared using a solvothermal method. By adjusting the ratio of propylene glycol and ethylene glycol in the solvent, different concentrations of oxygen vacancies and the content of Bi could be controlled. The Bi/ Bi4O5I2 photocatalyst prepared with a propylene glycol to ethylene glycol ratio of 5:1 showed excellent optical properties and high efficiency in disinfecting E. coli under visible light.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Multidisciplinary
Ming Gong, Hui Zhao, Chengsi Pan, Yuming Dong, Yingxin Guo, Haixia Li, Jiawei Zhang, Guangli Wang, Yongfa Zhu
Summary: Interface Pt-O bonded Pt-Ov-BiOBr catalysts were designed for photocatalytic selective oxidation of 5-hydroxymethylfurfural (HMF). The Pt-O bond on the unsaturated coordination environment of Ov-BiOBr serves as an electron transport channel to efficiently generate O-2(-). Photogenerated h(+) gathers at the Pt-Ov-BiOBr interface to oxidize HMF to carbon-centered radicals. The spatial proximity of O-2(-) and carbon-centered radicals at the Pt-Ov-BiOBr interface promotes reciprocal collisions and reactions, enhancing the efficiency of HMF photocatalytic selective oxidation.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Shuai Fu, Yanqiang Du, Junhong Bie, Zhiquan Huang, Hai Hu, Qiang Huang, Huijie Zhu, Wei Yuan, Leicheng Li, Bo Liu
Summary: Z-scheme Ag2WO4/BiOBr heterojunction with rich oxygen vacancies was successfully synthesized by hydrothermal method. It exhibited superior photodegradation efficiencies towards LR5B and demonstrated excellent photocatalytic activity against TC, CIP, and RhB. The formation of oxygen vacancies and intimate Z-scheme heterostructure between Ag2WO4 and BiOBr were the main factors underlying the enhanced photocatalytic properties.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2023)
Article
Engineering, Electrical & Electronic
Niteshkumar Agrawal, Bingyuan Zhang, Chinmoy Saha, Chandrakanta Kumar, Xipeng Pu, Santosh Kumar
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2020)
Article
Nanoscience & Nanotechnology
Dezhi Kong, Di Yin, Dafeng Zhang, Fangyuan Yuan, Binxin Song, Shujuan Yao, Jie Yin, Yanling Geng, Xipeng Pu
Article
Chemistry, Physical
Xianying Wang, Yingshu Wang, Meichao Gao, Jinni Shen, Xipeng Pu, Zizhong Zhang, Huaxiang Lin, Xuxu Wang
APPLIED CATALYSIS B-ENVIRONMENTAL
(2020)
Article
Chemistry, Multidisciplinary
Dezhi Kong, Haohan Fan, Di Yin, Dafeng Zhang, Xipeng Pu, Shujuan Yao, Changhua Su
Summary: This study successfully synthesized a ZnIn2S4/AgFeO2 p-n heterojunction composite, which significantly increased the photocatalytic H-2 evolution rate. Various characterization techniques provided strong evidence for the formation of the p-n heterojunction and the charge carrier transport pathway.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Materials Science, Ceramics
Fan Xia, Shicai Cui, Xipeng Pu
Summary: In this study, foam ceramics were prepared using red mud and K-feldspar washed waste as raw materials and SiC as the foaming agent. The porous structure of the foam ceramics could be effectively modulated by adjusting the formulation and sintering process parameters. New phases were generated in foam ceramics, and the compressive strength of the foam ceramics decreased with an increase in the KFW/RM ratio and sintering temperature. One foam ceramic sample exhibited the best overall performance with excellent porous structure and mechanical properties.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Chemical
Xiuling Li, Yuchao Li, Bo Ge, Limin Zhao, Xipeng Pu, Guina Ren, Zhaozhu Zhang
Summary: In order to enhance the photocatalytic capacity of Bi2WO6, various methods including crystal facet modulation, high-temperature treatment, heterojunction construction, and quantum dot doping are commonly adopted. Therefore, it is crucial to synthesize a highly efficient Bi2WO6 photocatalyst using simple preparation methods. In this study, a two-step method involving stirring at room temperature and drying at 80 degrees C was employed to improve the photodegradation activity of Bi2WO6 by 27.5 times. It was found that the improved photocatalytic performance of the modified superhydrophobic Bi2WO6 (SH-Bi2WO6) was attributed to the reduced band width from 2.69 eV to 2.1 eV. Furthermore, SH-Bi2WO6 can be easily applied to glass and fabric surfaces through a spraying method, resulting in the production of superhydrophobic glass with a contact angle of 162o and superhydrophobic fabric with a size of 0.4 m x 0.4 m.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Materials Science, Ceramics
Dafeng Zhang, Ruiqi Zhang, Junchang Liu, Xipeng Pu, Peiqing Cai
Summary: A ZnIn2S4/BiFeO3 heterojunction photocatalyst with a 3D/2D structure was designed and prepared, and a typical 3D/2D structure with intimate interface was obtained, providing more active sites and boosting the migration of photogenerated charges. The optimal mass ratio of BiFeO3 in ZnIn2S4/BiFeO3 was determined to be 10%, which achieved a 10.5-fold increase in H-2 evolution rate compared to pure ZnIn2S4. The ZnIn2S4/BiFeO3 composite exhibited excellent recyclability and structural stability based on cycling experiment, and a S-scheme heterojunction mechanism was revealed.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Xiaoli Su, Aihui Wang, Linyuan Xu, Wei Zhang, Fumin Guo, Dafeng Zhang, Xipeng Pu, Peiqing Cai
Summary: In this study, Ag2CO3/SnFe2O4 (Ag2CO3/SFO) photocatalyst was prepared by a simple hydrothermal-ultrasonic method for the efficient degradation of ciprofloxacin and phenol. The unique 1D/0D morphology of Ag2CO3/SFO, resulting from the attachment of SFO nanoparticles on Ag2CO3 rods, increased the number of active sites. The introduction of magnetic SFO enabled excellent magnetic recovery performance and the degradation rate of ciprofloxacin using Ag2CO3/SFO was significantly higher than pure SFO and Ag2CO3.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Xintong Yao, Xue Jiang, Dafeng Zhang, Shuya Lu, Mengyao Wang, Sihan Pan, Xipeng Pu, Junchang Liu, Peiqing Cai
Summary: This study designed and synthesized a full-spectrum responsive CuWO4/BiOBr:Yb3+,Er3+ composite material to solve the problem of photocatalysts by increasing the efficiency of light energy conversion. The best degradation performance was achieved by 5% CuWO4/BiOBr:Yb3+,Er3+ under visible and near-infrared light, with tetracycline removal rates of 93.9% in 60 min and 69.4% in 12 h, respectively, which was 5.2 and 3.3 times higher than that of BiOBr:Yb3+,Er3+. The improved photoactivity was attributed to the up-conversion effect, photothermal effect, and direct Z-scheme heterojunction. The photocatalyst also exhibited excellent photostability in cycle degradation experiments, offering a promising technique for designing and synthesizing full-spectrum photocatalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Shikai Wang, Dafeng Zhang, Ping Su, Xintong Yao, Junchang Liu, Xipeng Pu, Hengshuai Li, Peiqing Cai
Summary: The reasonable design and fabrication of heterojunction can regulate the photocatalytic performance. However, constructing a stable and tight interface in S-scheme heterostructures on semiconductor photocatalysts is still a challenge. In this study, a ZnIn2S4/Cu2MoS4 (ZIS/CMS) S-scheme heterostructure was fabricated, achieving a mossy tile-like morphology. The compact interface resulting from in-situ growth efficiently facilitated charge separation and transfer, leading to a significant improvement in photocatalytic performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Shikai Wang, Dong Zhang, Dafeng Zhang, Xipeng Pu, Junchang Liu, Hengshuai Li, Peiqing Cai
Summary: A novel hydrangea-like ZnIn2S4/FePO4 photocatalyst with S-scheme heterojunction was prepared using an ultrasound-annealing process, which significantly enhanced the photocatalytic H2 production rate and stability by suppressing the recombination of electron hole pairs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Inorganic & Nuclear
Dafeng Zhang, Ruiqi Zhang, Xue Jiang, Dong Zhang, Hengshuai Li, Junchang Liu, Xipeng Pu, Peiqing Cai
Summary: The development of efficient and economical photocatalysts is a promising strategy for pollution remediation. In this study, magnetically separable SnIn4S8/ZnFe2O4 composites (SIS/ZFO) were prepared by combining SIS with ZFO. The composite with a 30% ZFO mass ratio (SIS/ZFO-30) exhibited the highest photocatalytic performance, achieving a 60% removal of tetracycline in 120 minutes. This improvement can be attributed to the formation of S-scheme heterojunctions between SIS and ZFO, resulting in enhanced absorption of visible light and improved separation and redox ability of electron-hole pairs. Additionally, the SIS/ZFO composites demonstrated excellent magnetic properties and stability.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Dafeng Zhang, Ruiqi Zhang, Xue Jiang, Dong Zhang, Hengshuai Li, Junchang Liu, Xipeng Pu, Peiqing Cai
Summary: The development of efficient and economical photocatalysts is considered a promising strategy for pollution remediation. Magnetically separable SnIn4S8/ZnFe2O4 composites (SIS/ZFO) exhibit excellent photocatalytic performance and have great potential for water treatment.
DALTON TRANSACTIONS
(2023)
