Article
Materials Science, Multidisciplinary
Xiaoyun Li, Xiaohan Zhai, Yan Zhang, Miaorong Zhang, Jianguo Tang
Summary: In this study, a novel mild etchant, taurine aqueous solution, was successfully used for photoelectrochemical etching of GaN. The pore shape of etched GaN can be regulated by controlling the etching time. The etching process does not affect the crystal integration and stress property of GaN, and the etched GaN exhibits larger photocurrents compared to as-grown planar GaN, indicating its potential for photoelectric fields.
Article
Nanoscience & Nanotechnology
Devarajulu Gelija, Chadrasekhar Loka, Mahendra Goddati, Na-hyun Bak, Jaebeom Lee, Moon-Deock Kim
Summary: A Ag/WO3/InGaN hybrid heterostructure was successfully developed, which exhibited superior photoabsorption ability in the visible region. The improved charge carrier separation and transfer kinetics lead to enhanced overall photoelectrochemical performance.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Heng Wu, Qi Liu, Li Zhang, YaWen Tang, Gang Wang, GuoBing Mao
Summary: A simple hydrothermal method has been developed to prepare a WO3 nanorod array@Prussian blue (WO3@PB) composite material with core-shell heterogeneous structures, which showed higher photocurrent density compared to pure WO3. The composite material offers a promising photoelectrocatalyst for water decomposition applications and provides a way for the synthesis of environmentally friendly and low-cost photoanode materials.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Linjie Jian, Rong Peng, Youzhou He, Xingmin Wang, Weiwei Guo
Summary: In this study, urchin-like WO3 was successfully synthesized using a one-step hydrothermal method. The crystal structure, chemical composition, morphology, specific surface area, and gas sensing properties of WO3 were evaluated using various instruments. The results showed that the urchin-like WO3 gas sensor exhibited high response, selectivity, repeatability, and stability towards 30 ppm ammonia, indicating its potential as a candidate material for ammonia monitoring.
Article
Chemistry, Multidisciplinary
Bo Shang, Conor L. Rooney, David J. Gallagher, Bernie T. Wang, Andrey Krayev, Hadar Shema, Oliver Leitner, Nia J. Harmon, Langqiu Xiao, Colton Sheehan, Samuel R. Bottum, Elad Gross, James F. Cahoon, Thomas E. Mallouk, Hailiang Wang
Summary: We present a valuable molecular catalyst-based photocathode that effectively reduces aqueous CO2 to CO and methanol. By incorporating cobalt phthalocyanine molecules onto graphene oxide through a (3-aminopropyl)triethoxysilane linker, the photoelectrode achieves high selectivity for CO2 reduction to CO at mild potentials as low as 0 V versus the reversible hydrogen electrode (vs RHE). Methanol production is observed at an onset potential of -0.36 V vs RHE, with a peak turnover frequency of 0.18 s(-1). This groundbreaking work demonstrates the successful integration of molecular catalysts with p-type semiconductors, achieving remarkable performance in photoelectrochemical CO2 reduction to CO and methanol.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Yongguang Wang, Longchao Yao, Linjie Xu, Weihong Wu, Wenhao Lin, Chenghang Zheng, Yuanqun Feng, Xiang Gao
Summary: Hierarchical WO3 hollow microspheres were successfully synthesized and applied in gas sensors, showing high sensitivity, selectivity, repeatability, and response/recovery characteristics towards NO gas, mainly due to their unique structure with high specific surface area and effective gas diffusion ability.
Article
Chemistry, Analytical
Si Dai, Hui Huang, Shihan Liu, Wenfang Deng, Yueming Tan, Qingji Xie
Summary: In this study, Au nanoclusters (AuNCs) were used as both photosensitizers and peroxidase mimics for sensitive PEC sensing of Hg2+. The AuNCs improved the PEC activity of WO3 nanorods as photosensitizers, and catalyzed precipitate formation on the photoelectrode as peroxidase mimics. The presence of Hg2+ inhibited the AuNCs-catalyzed precipitate formation, leading to an increase in the photocurrent of the photoelectrode for the PEC detection of Hg2+.
Article
Chemistry, Multidisciplinary
Jiakun Zhang, Weixu Sun, Xin Ding, Kai Xia, Tao Liu, Xiaodong Zhang
Summary: WO3 films modified with cobalt-phosphate (Co-Pi/WO3) show high efficiency in photocatalytic organic wastewater degradation, with a degradation rate constant of 0.63311 h(-1) and a relatively good stability.
Article
Chemistry, Physical
Aditya Singh, Sujay Karmakar, Suddhasatwa Basu
Summary: A WO3-BiVO4 (WO-60s/BVO) heterojunction was successfully synthesized, with Cr-doped NiFe-LDH co-catalyst significantly promoting OER kinetics. The sputtered WO3 underlayer facilitated enhanced electron-hole separation, while the NiFeCr-LDH co-catalyst improved LDH electrical conductivity, leading to more efficient transfer of photogenerated charge-carriers.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Gengcheng Liao, Yang Zhou, Zongyu Huang, Qian Ma, Siwei Luo, Yundan Liu, Xiang Qi
Summary: The report describes the preparation of Bi2Se3/rGO composites through a hydrothermal method. SEM and Raman spectra were used to analyze the microstructures and morphology properties of the composites, indicating a well-prepared and high crystalline material. PEC tests showed that the Bi2Se3/rGO heterojunction exhibited enhanced photocatalytic performance compared to pure Bi2Se3, with rGO facilitating efficient separation of electron-hole pairs.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Chemistry, Multidisciplinary
Wei Lin, Yue Yu, Yaoxun Fang, Jianqiao Liu, Xinran Li, Jiangpeng Wang, Yilin Zhang, Chao Wang, Lin Wang, Xuelian Yu
Summary: This study presents an effective strategy for improving PEC performance by fabricating a WO3 photoanode rich in oxygen vacancies modified by NiFe-based LDH. The synergistic effect of NiFe-LDH and Ov significantly enhances the photocurrent density, leading to improved charge separation and transport.
Article
Chemistry, Physical
Tanta Spataru, Marius Alexandru Mihai, Loredana Preda, Maria Marcu, Mihai Marian Radu, Nicolae Dan Becherescu, Alin Velea, Mohamed Yassine Zaki, Radu Udrea, Veronica Satulu, Nicolae Spataru
Summary: The effectiveness of electrochemical WO3 modification on improving the photoactivity of native air-formed TiO2 layers was studied. Laser treatment was found to result in smaller and better dispersed WO3 particles on the surface, as well as enhanced oxygen deficiency and absorptivity. These features, combined with the narrower bandgap, higher donor density, and lower flat band potential of the laser-treated WO3/TiO2 systems, enabled faster oxygen photoanodic evolution and a cathodic shift in onset potential. Additionally, the laser treatment significantly enhanced the photoelectrocatalytic performances for UV-assisted methanol anodic oxidation.
APPLIED SURFACE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Yang An, Jingxuan Hao, Cheng Lin, Shaowei Zhang, Kan Zhang, Yulin Min
Summary: Assembling manganese dioxide on the (111) facet of titanium dioxide nanorods can significantly enhance the catalytic activity of the photoanode and reduce photovoltage decay, leading to more efficient charge separation and improved photoelectrochemical performance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Seungkyu Kim, Top Archie Dela Pena, Sehun Seo, Hansol Choi, Juncheol Park, Jong-Hoon Lee, Jaeyong Woo, Chang Hyuck Choi, Sanghan Lee
Summary: Metal-organic frameworks (MOFs) show promise as co-catalysts for enhancing PEC water splitting, with the decoration of the BiVO4 photoanode surface with a Bi-based MOF leading to increased photocurrent density and improved operational stability.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Runshi Xiao, Han Yu, Mingwang Liu, Wentao Xu, Ying Qin, Rong Tan, Yuanxing Chen, Jing Wen, Xiang Peng, Wenling Gu, Chengzhou Zhu, Liuyong Hu
Summary: In this study, a sensitive photoelectrochemical (PEC) biosensor was developed using non-fullerene acceptors (NFAs) to monitor urease activity. The organic building blocks of the NFAs showed selective chemical reactivity with urease, resulting in the formation of a depressive photoelectric response. The linear relationship between the recession of photoelectric performance and the concentration of urease demonstrated good sensitivity and selectivity. The successful detection of urease activity in human saliva samples suggests the promising potential of NFA-based PEC biosensors for clinical applications.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.