Article
Green & Sustainable Science & Technology
Hualin Jiang, Qi Wang, Pinghua Chen, Huitao Zheng, Jinwen Shi, Hongying Shu, Yanbiao Liu
Summary: A hierarchical heterojunction (Bi)BiOBr/rGO was synthesized, exhibiting a synergistic effect between adsorption and photocatalysis for efficient degradation of tetracycline. The performance could be maintained for over 50 hours without post-treatment, indicating its potential application in continuous-flow configurations for emerging contaminants.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Inorganic & Nuclear
Xinyu Liu, Heruo Li, Shuang Gao, Xue Jing, Yulan Ren
Summary: HC/BiOBr/Bi2WO6 microspheres synthesized by solvothermal method exhibit excellent photocatalytic activity, significantly higher than that of single-phase BiOBr or Bi2WO6, and also possess good photostability and recyclability.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Shuyan Qi, Ninglong Ma, Ruiyan Zhang, Yiming Zhang, Xueting Liu, Huanyan Xu
Summary: In this study, a Zn0.5Cd0.5S/BiOBr composite photocatalyst was constructed using an in situ growth technique. The 70-Zn0.5Cd0.5S/BiOBr heterojunction exhibited the highest photocatalytic degradation efficiency for methylene blue, and the degradation rates were 1.83 and 4.76 times those of Zn0.5Cd0.5S and BiOBr, respectively. After four cycles, there was no significant decrease in photocatalytic activity, and the main active substances involved in the degradation process were h(+) and .OH.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Mei-Ling Xu, Xiao-Jie Jiang, Jia-Ran Li, Fu-Ji Wang, Kui Li, Xin Cheng
Summary: This research successfully fabricated a novel 3D hollow BiOBr@Bi-MOF microsphere structure through controlled dissociation kinetics, increasing the photocatalytic degradation efficiency of RhB.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Energy & Fuels
Kaiyue Gao, Haibao Zhu, Chengming Zhang, Xiaojie Song, Li Lao, Liping Ni, Jianli Chen, Congliang Cheng, Xiufang Wang
Summary: This study explores new strategies to improve the nitrogen fixation performance of catalysts by constructing Bi metal active sites on the surface of BiOBr/BiOI heterojunction. The ternary BiOBr/BiOI/Bi catalyst demonstrates excellent photocatalytic reduction of nitrogen to ammonia, with a nitrogen reduction rate significantly higher than that of pure BiOBr and BiOBr/BiOI. The study also proposes a mechanism for the photocatalytic nitrogen fixation of the BiOBr/BiOI/Bi.
Article
Environmental Sciences
Qiao Wang, Yiting Cao, Yuemi Yu, Chao Zhang, Jiahao Huang, Guoshuai Liu, Xuedong Zhang, Zhihong Wang, Hale Ozgun, Mustafa Evren Ersahin, Wei Wang
Summary: In this study, Co-doped Bi/BiOBr nanocomposites were prepared and their photocatalytic performance was evaluated. The nanocomposites exhibited excellent catalytic activity under visible-light irradiation, thanks to the modulation of their electron structure. The mechanism of BPA removal by the nanocomposites was also studied.
Article
Engineering, Environmental
Zeqing Long, Guangming Zhang, Hongbiao Du, Jia Zhu, Jinwei Li
Summary: In this study, BiOBr-Bi2S3 heterojunctions with high photocatalytic performance for Cr(VI) reduction were successfully prepared, achieving 100% removal of Cr(VI) within 12 minutes. The performance of photo-reduced Cr(VI) by the heterojunctions was significantly higher than that of pure Bi2S3 and BiOBr, suggesting their potential as a novel photocatalytic adsorbent. Additionally, the heterojunctions showed good adsorption efficiency for Cr(III), indicating their bifunctional capability.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
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, Chemical
Lei Hao, Peng Ju, Yu Zhang, Chengjun Sun, Kunpeng Dou, Dankui Liao, Xiaofan Zhai, Zhaoxia Lu
Summary: A novel plate-on-plate hollow structured BiOBr/Bi2MoO6 p-n heterojunction with rich oxygen vacancies (OVs) was constructed using an in-situ ion exchange method. The introduction of Bi2MoO6 significantly affected the crystal growth and photocatalytic activity of BM PHs, leading to enhanced photocatalytic antibacterial performance under visible light irradiation. The highly efficient photocatalytic performance can be attributed to the synergistic effects of the fabricated p-n heterojunction combined with massive OVs.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Yue Xin, Qiuhui Zhu, Ting Gao, Ximing Li, Wei Zhang, Hui Wang, Donghang Ji, Yu Huang, Mohsen Padervand, Feng Yu, Chuanyi Wang
Summary: Water vapor has been found to have a negligible effect on the efficiency of photocatalytic NO removal, but it reduces the generation of toxic NO2 intermediate. Defective Bi/BiOBr nanoflowers were synthesized and showed significantly improved photocatalytic NO removal efficiency. The study also revealed the adsorption and removal pathway of NO using NO-TPD and in-situ DRIFTS techniques.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Yun He, Longkai Zhu, Jue Hu, Yizhen Zhang, Jiaqi Wang, Chengxu Zhang, Jianfen Li, Michael K. H. Leung, Hui Li
Summary: A dual-photoelectrode PFC system was constructed using an SnO2/BiOBr/MoS2 photoanode and copper oxide/copper photocathode, achieving a high power density of 0.045 mW cm(-2) and an improved photodegradation efficiency of approximately 91%. The SnO2 hole-blocking layer in the photoanode contributed to the appropriate interfacial contact and outstanding photoelectrochemical activity, while the by-product Bi2S3 acted as a sensitizer to increase light harvesting. The addition of methylene blue as a hole scavenger significantly inhibited recombination and resulted in a high power output efficiency in the PFC system.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Yingyue Hu, Xinyao Hu, Lu Xue, Baolong Cui, Yi Du
Summary: In this experiment, BiOBr photocatalyst with exposed (1 1 0) facets was successfully synthesized using CaCO3 as a directing agent, leading to improved photocatalytic degradation efficiency and enhanced adsorption capacity. The study also compared the effects of different alkaline earth metals on the performance of BiOBr photocatalytic materials, with promising results for CaCO3 addition.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Jiufu Chen, Qi Yang, Junbo Zhong, Jianzhang Li, Clemens Burda
Summary: The surface modification of BiOBr photocatalysts with C-60 significantly enhances their photocatalytic activity, leading to higher specific surface area and improved photo-induced carrier distribution and migration. The synergistic interaction between C-60 and BiOBr results in increased oxygen vacancies concentration, facilitating the formation of active free radicals and boosting the photocatalytic performance.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Yingyue Hu, Xinyao Hu, Lu Xue, Baolong Cui, Yi Du
Summary: In this experiment, BiOBr photocatalyst with different main exposed facets was successfully synthesized, and the modulation of crystal surface was achieved by adding CaCO3, which not only improved the photocatalytic degradation efficiency, but also provided a new idea for the application of alkaline earth metals in the field of photocatalysis.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Mingliang Ma, Yuying Yang, Yan Chen, Yong Ma, Ping Lyu, Aiqi Cui, Weibo Huang, Zhe Zhang, Yanzheng Li, Feiyan Si
Summary: In this study, a flower-like magnetic composite photocatalyst was prepared, which showed enhanced catalytic performance and cyclic stability. The heterojunction structure formed by BiOBr, Bi metal, and MnO2 increased the specific surface area of the photocatalyst and promoted the separation of photo-generated carriers. The degradation efficiency of organic dye methylene blue was found to be 95.23% within 150 min, showcasing the excellent catalytic activity of the photocatalyst.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
Nishi Mehak, Bindu Rani, Aadil Fayaz Wani, Shakeel Ahmad Khandy, Ajay Singh Verma, Atif Mossad Ali, M. A. Sayed, Shobhna Dhiman, Kulwinder Kaur
Summary: In this study, the electronic, structural, and thermoelectric properties of newly designed layered rare-earth metal germanide halides were investigated. The materials showed promising thermoelectric performance, making them suitable candidates for energy harvesting in thermoelectric applications.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Devidas I. Halge, Vijaykiran N. Narwade, Nabeel M. S. Kaawash, Pooja M. Khanzode, Sohel J. Shaikh, Jagdish W. Dadge, Prashant S. Alegaonkar, Rajeshkumar S. Hyam, Kashinath A. Bogle
Summary: This study presents the design and fabrication of a high-performance blue light photodetector using an n-type cadmium sulfide (CdS) thin film and a p-type polyaniline (PANI). The photodetector demonstrates exceptional performance characteristics, including high responsivity, detectivity, and sensitivity, along with rapid response time and rectification behavior. The research represents a significant advancement in the field of high-performance photodetectors.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Da Hu, Jiabin Lu, Qiusheng Yan, Yingrong Luo, Ziyuan Luo
Summary: This study introduces a chemical mechanical polishing technique based on metal electrochemical corrosion for single-crystal SiC to address the environmental pollution caused by the polishing solution in chemical mechanical polishing. Wear experiments were conducted to investigate the wear properties of SiC C-surface under different grinding ball materials and solutions. The proposed mechanism of material removal in single-crystal SiC via metal electrochemical corrosion was discussed.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Lifang Mei, Long Lin, Dongbing Yan, Yu Liang, Yu Wu, Shuixuan Chen
Summary: This paper investigates the removal of CuO particles from silicon wafer surfaces using a picosecond laser. Numerical calculations and experimental research were conducted, and a thermal-stress coupled finite element model was established. The results show that as the laser energy density increases, the removal rate of CuO particles initially increases and then decreases, while the roughness of the silicon substrate decreases and then increases.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Michihiro Yamada, Shuhei Kusumoto, Atsuya Yamada, Kentarou Sawano, Kohei Hamaya
Summary: In this study, we demonstrated the low-temperature growth of a Ge layer on a Co-based Heusler alloy via Sn doping, which improved the magnetic properties and spin signal.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Xiang-Long Wei, Bao-Feng Shan, Zong-Yan Zhao
Summary: This study synthesized and characterized a CuAlO2/CuGaO2 heterostructure and evaluated its photocatalytic performance. The heterostructure exhibited superior performance compared to individual CuAlO2 and CuGaO2 photocatalysts, with increased carrier concentration, enhanced redox capabilities, superior electrochemical stability, and reduced interfacial resistance. Photocatalytic experiments demonstrated the remarkable oxidation potential and notable reduction activity of the heterostructure, outperforming CuAlO2 and CuGaO2 in degradation rates and hydrogen production rates, respectively. These findings highlight the superior performance and broad applicability of the CuAlO2/CuGaO2 heterostructure in various photocatalytic reactions.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Micka Bah, Daniel Alquier, Marie Lesecq, Nicolas Defrance, Damien Valente, Thi Huong Ngo, Eric Frayssinet, Marc Portail, Jean-Claude De Jaeger, Yvon Cordier
Summary: This study investigates the AlN nucleation layer issue in GaN high frequency telecommunication and power switching systems fabricated after heteroepitaxy on Silicon or Silicon Carbide. It is shown that using 3C-SiC as an intermediate layer can significantly decrease RF propagation losses. Measurements and analyses demonstrate that dopant diffusion into the 3C-SiC pseudo-substrate is confined beneath the interface, and a slightly conductive zone is present beneath the AlN/3C-SiC interface, explaining the low propagation losses obtained for the devices. This work highlights the importance and efficiency of the 3C-SiC intermediate layer as a pseudo-substrate.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Shuang Wang, Lijun Wu, Zhiqing Wang, Ziyue Qian
Summary: The geometric structure and electrical properties of zigzag and armchair DWSiNT perfect tubes with different Stone-Wales defects were simulated using the SCC-DFTB method. It was found that the atomic arrangement, stability, energy gap, and charge distribution strongly depend on the type of tube. The effects of strong and weak electric fields on the tubes were also investigated, showing different impact on stability and energy gap. These findings have implications for future experimental studies.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Nanda Kumar Reddy Nallabala, Sunil Singh Kushvaha, Sambasivam Sangaraju, Venkata Krishnaiah Kummara
Summary: This study focuses on the preparation and performance of MIS-type high-k dielectric oxide-based UV photodetectors. The researchers found that the Au/Ta2O5/GaN devices prepared on Ta2O5/GaN heterojunction with post-annealing exhibited improved photoresponsivity, EQE, and rise/fall times. This improvement is attributed to the optimized band configuration of the Ta2O5/GaN heterostructure and the effect of post-annealing on photogenerated charge carriers.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Jean-Francois Michaud, Marc Portail, Daniel Alquier, Dominique Certon, Isabelle Dufour
Summary: This paper reviews the use of MEMS devices without sensitive layers in gas detection applications. These devices can measure a physical property of the gas to determine its concentration, and have the advantages of generality and high detection limits.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Kanyu Yang, Chaojie Shi, Ruizhao Tian, Haoyue Deng, Jie He, Yangyang Qi, Zhengchun Yang, Jinshi Zhao, Zhen Fan, Jun Liu
Summary: This study investigates the electrical and synaptic properties of Ag/TiO2 nanorod/FTO-based RRAM devices, focusing on the impact of different seed layer thicknesses on nanorod thickness and RRAM performance. The devices show remarkable achievements in terms of endurance, self-compliance, and resistance switching ratio. The switching mechanism is attributed to space-charge-limited conduction resulting from electron trapping in oxygen vacancy traps. The devices also maintain stable synaptic properties even after undergoing multiple cycles of long-term potentiation and depression.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Karthickraj Muthuramalingam, Wei-Chih Wang
Summary: This study presents a non-destructive approach using terahertz time-domain spectroscopy (THz-TDS) to estimate the electrical properties of semi-insulating compound semiconductors. The study successfully measures the resistivity and carrier concentration of semi-insulating Silicon Carbide (SiC) and Indium Phosphide (InP) wafers using THz-TDS in transmission mode. The simplified Drude model and the Nelder-Mead algorithm are employed to estimate the electrical properties, and the results are in accordance with the manufacturer specifications. The feasibility of non-destructive mapping of the electrical properties is demonstrated, offering a promising tomographic inspection approach for online monitoring.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Pengfei Wei, Rui Tong, Xiaofeng Liu, Yao Wei, Yongan Zhang, Xu Liu, Jian Dai, Haipeng Yin, Dongming Liu
Summary: This study investigates the influence of SiNx and SiOxNy as rear-side passivation films on the performance of PERC+ cells. SiNx film is found to have better passivation performance and resistance to aluminum paste erosion, while SiOxNy film exhibits better optical performance. By designing multi-layer SiNx/SiOxNy/SiNx stacks, the cells' efficiency and bifaciality are significantly improved.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Shuangting Ruan, Xiaolan Li, Wen Cui, Zhihui Zhang, Zhihui Xu, Huanqi Cao, Shougen Yin, Shishuai Sun
Summary: Integrating photosensitive electrode materials can effectively improve the low temperature tolerance and enhance energy density and power density. The surface morphology reconstruction technique can increase the active surface area and improve electrolyte contact, leading to higher specific capacity. Additionally, the electrodes demonstrate excellent photoelectric and photothermal conversion abilities, allowing the supercapacitor to maintain high energy density even at low temperatures.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Review
Engineering, Electrical & Electronic
Ashmalina Rahman, James Robert Jennings, Mohammad Mansoob Khan
Summary: This review provides a comprehensive overview of the synthesis and applications of nanostructured CuInS2 in photocatalytic applications. Various strategies, including the introduction of dopants, surface decoration, and heterojunction formation, have been summarized to improve the photocatalytic performance of CuInS2. However, scientific challenges such as the high carrier recombination rate limit the broad application of CuInS2.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)