Article
Engineering, Chemical
Zeru Qian, Lei Zhang, Yanfeng Zhang, Hong Cui
Summary: Depositing metal on the surface of semiconductor is an effective strategy to enhance the reducing activity of photocatalyst. In this study, Bi/BiOBr catalyst was prepared via NaBH4-assisted reduction reaction and its photocatalytic capacity for CO2 conversion was evaluated. The optimal Bi/BiOBr showed significantly higher production rates of CO and CH4 compared to original BiOBr, attributed to the synergy of surface plasmon resonance effect of metallic Bi and oxygen vacancies in the surface of BiOBr. The oxygen vacancies on the surface of BiOBr can be considered as reactive locations for CO2 and H2O molecules adsorption. This work reveals the synergistic effect of in-situ formed oxygen vacancies and metal nanoparticles of Bi on enhancing the photocatalytic activity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
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
Green & Sustainable Science & Technology
Chunxu Wu, Jiaqi Zhang, Bin Fang, Yongqian Cui, Zipeng Xing, Zhenzi Li, Wei Zhou
Summary: The self-floating biomass charcoal supported flower-like plasmon Ag/C, N co-doped defective TiO2 photocatalyst shows excellent visible-light-driven photocatalytic performance, with a photocatalytic degradation ratio of 2,4-dichlorophenol and hydrogen evolution significantly higher than pristine TiO2, attributed to the synergistic effect of the surface plasmon resonance effect of Ag nanoparticles, efficient C, N co-doping, and formation of oxygen vacancy defects. The long-term stability of this novel self-floating photocatalyst indicates its potential practical applications.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Physical
Yuehui Liu, Yueyi Li, Xuguang Liu, Jiaxin Li, Yanjie Feng, Xia Li
Summary: Oxygen vacancy-rich Bi/Bi3TaO7 binary nanomaterials were synthesized by in situ reduction. The composite exhibited superior photocatalytic activity for the degradation of RhB under visible light, attributed to the synergistic effect of bismuth metal and oxygen vacancies. The photoexcited carrier separation rate and corresponding ability of photoelectrons were greatly increased in the composite material.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Chuchu Cheng, Jingwen Zhang, Renyou Zeng, Fangshu Xing, Caijin Huang
Summary: By tuning the Schottky barriers of Ni/S vacancy-rich Mn0.3Cd0.7S, this study successfully designed Ni/MCS-s composites with superior photocatalytic performance. The composites exhibited high hydrogen production activity in simulated seawater and effectively lowered the Schottky barrier to enhance hot electron participation in the photocatalytic process.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Teng Huang, Fan Tian, Zhipan Wen, Guangfang Li, Ying Liang, Rong Chen
Summary: Bi/Bi2WO6-x heterostructures were successfully prepared by a facile one-step hydrothermal method, with selective introduction of oxygen vacancy and metallic bismuth into Bi2WO6 nanostructures, leading to significantly improved photocatalytic activity for the photodegradation of bisphenol A and its analogues. Additionally, the concentration of singlet oxygen (O-1(2)) was found to be highly dependent on and modulated by the content of oxygen vacancy and metallic bismuth, with the obtained products displaying efficient photocatalytic performance and enhanced stability.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Review
Optics
Huaping Jia, Chi Chung Tsoi, Abdel El Abed, Weixing Yu, Aoqun Jian, Shengbo Sang, Xuming Zhang
Summary: Plasmon-enhanced photocatalysis is a promising technology for solar-to-chemical energy conversion. By controlling the morphology, composition, size, spacing, and dispersion of nanostructures, plasmonic nanostructure arrays enhance light-harvesting capability, charge transfer, electromagnetic fields, and contact interfaces. This study provides an overview of plasmonic nanostructure arrays and their applications in solar-driven chemical conversion, offering guidance for integrating plasmonic nanostructures in functional devices in various fields.
LASER & PHOTONICS REVIEWS
(2023)
Article
Materials Science, Multidisciplinary
Yi-Yan Li, Chu-Yao Zhong, Mei-Xin Li, Qiao-Yi Zhang, Yibo Chen, Zhao-Qing Liu, Jin Zhong Zhang
Summary: The performance of photocatalytic reduction of Cr(vi) is improved by tuning the localized surface plasmon resonance (LSPR) of W18O49 nanostructures through morphology control. The blue shift and intensity increase of the corresponding LSPR bands are attributed to morphology changes from nanowires to nanobundles and urchin-like nanospheres, resulting in enhanced photocatalytic activity.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Engineering, Chemical
Ting Gao, Jingqi Lin, Ke Zhang, Mohsen Padervand, Yifan Zhang, Wei Zhang, Menglin Shi, Chuanyi Wang
Summary: Photocatalysis has attracted attention for NO removal at low concentrations, but it has limitations such as limited light absorption and toxic byproduct generation. In this study, porous Bi/Bi3NbO7 structures were fabricated and used for enhanced photocatalytic NO removal. The optimized activity for NO removal was 60.3%, achieved with specific molar ratios and operational conditions. The defects and surface plasmon resonance effect of Bi nanodots contributed to improved photocatalytic NO removal and inhibition of toxic byproduct NO2.
Article
Chemistry, Physical
Huiwei Ding, Huimei Yu, Qiaofeng Han
Summary: The study successfully prepared beta-Bi2O3/Bi5O7I heterojunction photocatalyst using dried and glacial acetic acid-adsorbed bismuth nitrate, showing high visible-light photocatalytic activity for degradation of tetracycline and malachite green. By changing the precursor, a successful transformation of both phase and heterojunction type was achieved, leading to improved visible-light responsiveness and more oxygen vacancies.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Tao Wang, Xiqing Liu, Hongquan Zhan, Runhua Liao, Yongqing Wang
Summary: Boosting photocatalytic activity through surface plasmon resonance (SPR) effect was demonstrated as an effective approach. In this study, metallic Bi was deposited in situ on the surface of Bi12TiO20 (BTO). The morphology, light properties, crystal structure, and chemical composition of the Bi/BTO composite were analyzed. The Bi/BTO composite showed increased light absorption and smaller electron transfer resistance. The SPR effect of metallic Bi generated hot electrons to promote the production of more active species, and the formed Schottky junction promoted electron separation, resulting in higher photocatalytic activity. The possible photocatalytic mechanism was also proposed for further development of plasmonic photocatalysts.
Article
Chemistry, Physical
Li Lv, Lin Lei, Qi-Wen Chen, Cheng-Li Yin, Huiqing Fan, Jian-Ping Zhou
Summary: Monoclinic phase La2Ti2O7 and orthorhombic phase Bi4Ti3O12 are widely used in photocatalysis due to their layered crystal structure. The electronic structures of these phases play a crucial role in their photocatalytic activity. Heat treatment in a nitrogen atmosphere introduces more oxygen vacancies into the S-scheme heterojunction, leading to enhanced NO removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Multidisciplinary
Bharat Tandon, Pavle V. Radovanovic
Summary: In certain aliovalently doped metal oxide nanocrystals, light-matter interaction results in the generation of localized surface plasmon resonance (LSPR), making them highly interesting for various technologies. The exciton splitting in In2O3 NCs is induced by both localized and delocalized electrons, and the contribution from these two mechanisms depends on the NC size. In large NCs, the angular momentum transfer from delocalized cyclotron electrons is the dominant mechanism, while in small NCs, exciton polarization is dominated by localized electron-spin-induced splitting.
Article
Engineering, Chemical
Huimin Jin, Yingna Guo, Jie Zhao, Yuyang Bei, Zhengkai Wu, Qingkun Shang
Summary: Bi-Bi5Nb3O15-550 photocatalyst was synthesized by high-temperature calcination and in-situ reduction, with the composition and morphology characterized. The photocatalytic degradation of herbicide 2,4-Dichlorophenoxyacetic acid (2,4-D) under visible light was studied. The introduction of oxygen vacancies and surface plasmon resonance effect of Bi expanded the absorption range and improved the transport of photogenerated carriers, leading to a significant increase in the degradation rate of 2,4-D.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Zhuo Zhu, Youxuan Ni, Qingliang Lv, Jiarun Geng, Wei Xiea, Fujun Li, Jun Chen
Summary: In this study, a plasmonic heterojunction of Au nanoparticle-decorated C3N4 with nitrogen vacancies was used as a bifunctional catalyst to enhance the performance of Li-O-2 batteries. The discharge voltage of the battery was significantly increased to 3.16 V under illumination, exceeding its equilibrium voltage, with a stable charge voltage of 3.26 V and good rate capability and cycle stability.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Materials Science, Multidisciplinary
A. Aly, M. Ghali, A. Osman, M. K. El Nimr
Summary: This study reports the discovery of naturally occurring luminescent graphene quantum dots (GQDs) in coconut water for the first time. The GQDs were identified through various measurements and were found to have dual sizes and emit different wavelengths of light. The GQDs were also utilized as an efficient optical sensor for aniline liquid detection.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Zehua Chen, Wencheng Ma, Qinglu Fan, Yanhua Liu, Min Sun, Shuo Wang
Summary: The nanoscale e-VOPO4 materials were successfully prepared by hydrothermal synthesis and calcination, showing high purity and suitable particle size. It exhibited satisfactory electrochemical performance as cathode material for sodium ion batteries, making it a potential candidate for high energy storage systems.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Tao Liu, Yahui Liu, Le Ling, Zhongxi Sheng, Zao Yi, Zigang Zhou, Yongjia Yang, Bin Tang, Qingdong Zeng, Tangyou Sun
Summary: In this paper, a terahertz (THz) micronano device that can switch between bimodal absorption and plasmon-induced transparency (PIT) is proposed. The device consists of layers of graphene, silica, and vanadium dioxide, and has a simple structure, easy tuning, and wide-angle absorption. The device achieves perfect absorption at specific frequencies and is highly sensitive to environmental refractive index. It also has the functions of a three-frequency asynchronous optical switch and slow light effect.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Xiaobo Luo, Songhan Hu, Qiudong Duan, Dacheng Zhou, Jialin Chen, Yugeng Wen, Jianbei Qiu
Summary: The exploration of solar light absorption by a material is important in photonics and optoelectronics. This study reveals the potential of Ba3-xGa2O6:xBi3+ as a promising candidate for various photonic and optoelectronic applications, and demonstrates the use of the material in double-sided laser printing for three-dimensional optical imaging.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Hemin Wang, Yanling Hao, Lele Xiang, Xiaosi Qi, Lei Wang, Junfei Ding, Yunpeng Qu, Jing Xu, Wei Zhong
Summary: This study designed Fe3O4-FeCO3/MWCNTs/RGO MCNCs composites and fabricated large-scale samples using hydrothermal and freeze-drying methods. The microstructural investigation showed that these materials had a mixed-dimensional structure, which improved impedance matching features, polarization, and conduction loss abilities, leading to significantly enhanced electromagnetic absorption properties.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Zhenshan Yu, Hao Chen, Xuequan Chen, Yu-Sheng Lin
Summary: This study presents a silicon dielectric metamaterial (SDM) composed of two outer symmetric semi-circular rings and two inner symmetric split-ring resonators (SRRs). The electromagnetic responses of the SDM device in different modes were studied through numerical simulations and experiments. Increasing the structure height of the SDM device resulted in red-shifted resonances and stronger intensities. This study provides a new design strategy for the development of frequency filtering, polarization switching, and resonance modulation characteristics in THz-wave applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Yiming Qi, Na Zhang, Meng Zong, Yangxianzi Liu, Weixing Chen
Summary: This study prepares dielectric/carbon fiber based nanocomposites wave-absorbing materials using liquid diffusion and high temperature carbonization strategies. By tuning the element type, drying mode, and filling amount, the electromagnetic parameters and absorbing properties can be adjusted. The best synthesized sample shows excellent absorbing performance, making it suitable for a wide range of electromagnetic wave absorption applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Carlos D. Gonzales-Lorenzo, T. K. Gundu Rao, Alberto A. Ccollque-Quispe, Jorge Ayala-Arenas, Monise B. Gomes, Betzabel N. Silva-Carrera, Roseli F. Gennari, Valeria S. Pachas, F. Monzon-Macedo, H. Loro, Jose F. D. Chubaci, Nilo F. Cano, Rene R. Rocca, Shigueo Watanabe
Summary: In this study, CaSiO3 doped with different ppm of Eu was synthesized using the devitrification method. Various physical properties were analyzed, revealing that the intensity and temperature of the high-temperature TL peak increased with higher dopant amounts. Fluorescence measurements indicated the presence of Eu2+ and Eu3+ ions in the samples. EPR spectra confirmed the existence of two defect centers.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Yanning Qu, Xinyang Li, Mei Cui, Renliang Huang, Wanquan Ma, Yunting Wang, Rongxin Su, Wei Qi
Summary: In this study, a new molybdenum disulfide/N,S-doped carbon quantum dots (MoS2/N,S-CQDs) heterojunction with enhanced light absorption and electrons transfer di-functional properties was constructed via a facile one-pot hydrothermal method. The heterojunction showed remarkable efficiencies in degrading methylene blue (MB) and malachite green (MG) in an actual water system under simulated sunlight irradiation. The facile synthetic technique and effective multifunctional properties of the composite have the potential for further research and industrial applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Jiayi Wang, Penggang Ren, Xueyan Zhao, Zhengyan Chen, Yanling Jin, Zengping Zhang
Summary: In this study, a novel homojunction photocatalyst was developed by combining defective g-C3N4 and flaked g-C3N4, which showed excellent degradation performance and cycling stability, and exhibited practicality in several simulation experiments.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Jing Yan, Xiaoxiao Zhao, Weixing Chen, Panbo Liu
Summary: This research presents a self-templated strategy to prepare a spherical superstructure of carbon nanorods through material modification and pyrolysis. The resulting material exhibits a large controllable radius of curvature and shows excellent microwave absorbing properties due to its high specific surface area and mesoporous structure.
MATERIALS RESEARCH BULLETIN
(2024)
Review
Materials Science, Multidisciplinary
Qinglin Zeng, Zepeng Lv, Shaolong Li, Bin Yang, Jilin He, Jianxun Song
Summary: Liquid metal batteries possess stable safety performance, high rate performance, and thermal stability. The electrolyte, an important component of the battery, plays a significant role in achieving these remarkable performance characteristics. This paper reviews the important research progress of liquid metal batteries electrolyte and discusses the influence of different electrolyte types on energy efficiency. It also highlights the limitations and challenges of existing electrolytes and proposes key development directions for liquid metal electrolytes.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Song Wu, Junli Wang, Xuanbing Wang, Di Jiang, Jinlong Wei, Xiaoning Tong, Zhenwei Liu, Qingxiang Kong, Naixuan Zong, Ruidong Xu, Linjing Yang
Summary: In this study, a composite electrode composed of Ti/TiH2/beta-PbO2_Mn3O4@C was fabricated and investigated for zinc electrowinning. The composite electrode exhibited low overpotential, Tafel slope, icorr, and high voltage stability, outperforming most reported Ti-based PbO2 electrode materials. The excellent catalytic activity can be attributed to the low resistance and porous interlayer of TiH2 nanosheets, as well as the addition of Mn3O4@C micro-flakes to the active layer.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
E. Tsoutsoumanos, T. Karakasidis, N. Laskaris, P. G. Konstantinidis, G. S. Polymeris, G. Kitis
Summary: This study investigates the correlation between nanocrystal dimensions and thermoluminescence signal magnitude through simulations conducted in Python. Two mathematical models, OTOR and IMTS, were used to derive theoretical luminescence signals. The obtained results were compared with experimental data and a thorough comparative discussion was conducted.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Vishnu Aggarwal, Sudhanshu Gautam, Aditya Yadav, Rahul Kumar, Bipul Kumar Pradhan, Brajesh S. Yadav, Govind Gupta, Senthil Kumar Muthusamy, Sumeet Walia, Sunil Singh Kushvaha
Summary: Recently, there has been a great demand for highly responsive photodetectors that can detect a wide range of wavelengths. Researchers have successfully fabricated a broadband metal-semiconductor-metal photodetector by integrating sputtered Bi2Se3 with laser molecular beam epitaxy grown GaN film. This photodetector shows high responsivity in both the ultraviolet and near-infrared regions.
MATERIALS RESEARCH BULLETIN
(2024)