Article
Nanoscience & Nanotechnology
Jian Ding, Shuqun Chen, Mingyi Xie, Yi Shen, Fei Li, Jiangchun Li, Zhen Li, Yang Wang
Summary: Defect and facet engineering are two effective approaches to tune the surface reactivity of metal-oxide-based sensing materials. In this study, WO3 nanosheets with exposed (002) crystal facet and oxygen vacancies defective [D-WO3-(002)] were obtained through a simple hydrothermal-hydrogenation process. The D-WO3-(002)-based acetone sensor exhibited excellent gas sensitive performance, including low limit of detection (0.5 ppm), wide range of response (0.5-100 ppm, S = 2.8 & SIM; 45.6), high selectivity, fast response-recovery, and excellent repeatability. The outstanding gas-sensing performance is attributed to the synergistic effects of the dominant (002) facet and the defect of oxygen vacancy structure, which effectively improved the surface reactivity of monoclinic WO3 nanosheets. This work demonstrates tremendous potential application prospect for environmental monitoring of acetone and non-invasive diagnosis of diabetes.
ACS APPLIED NANO MATERIALS
(2023)
Article
Electrochemistry
Erchao Meng, Jianlin Sun, Ying Huang
Summary: In this study, the electrochemical properties of LiFePO4 are improved by controlling crystal orientation and compounding reduced graphene oxide (rGO). The experimental results demonstrate that the rGO-modified LiFePO4 nanosheets exhibit excellent structural characteristics and electrochemical performance, attributed to the nanosheet structure and high electrical conductivity of rGO modification.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Yan Liang, Zhongke Xiang, Xiaojian Zhao, Feifei Xiang, Peipei Yan, Ting Yu, Xin Li, Yong Yang
Summary: The crystal facet effect of tin dioxide (SnO2) on photocatalysis and gas sensing was studied in this work. SnO2 nanocrystals with different exposed crystal facets were fabricated and their photocatalytic degradation performance on water pollutants was evaluated. It was found that elongated octahedral SnO2 nanocrystals with coexisting {221} and {110} facets showed superior photocatalytic degradation performance compared to other crystal facets, indicating a strong synergistic effect between the two facets. Additionally, the crystal facet effect combined with photo-assistance enabled the detection of ammonia at room temperature. The study analyzed the photocatalytic and gas sensing mechanisms using various experimental characterization techniques and theoretical calculations. These findings enrich the research on performance control of functional nanomaterials through crystal facet engineering and have practical significance in environmental monitoring and governance.
Article
Chemistry, Physical
Quan Cheng, Yong-Jun Yuan, Rui Tang, Qing-Yu Liu, Liang Bao, Pei Wang, Jiasong Zhong, Zongyan Zhao, Zhen-Tao Yu, Zhigang Zou
Summary: In this study, ultrathin anatase TiO2 nanosheets with exposed (001) facets were used as highly active photocatalysts for photocatalytic lignocellulose-to-H-2 conversion. The ultrathin structure provided abundant active sites and facilitated photogenerated charge transfer. The generation of ·OH radicals on the (001) facets was proven to be feasible. The findings demonstrated the potential of rapid ·OH generation to enhance lignocellulose oxidation and hydrogen production.
Article
Materials Science, Multidisciplinary
N. K. A. Hamed, N. Nafarizal, M. K. Ahmad, A. B. Faridah, M. Shimomura
Summary: The origin of the improved performance of erbium-doped TiO2 film via the hydrothermal doping process is the change in the dominant facet of rutile TiO2 upon doping, resulting in co-exposed {10 1}/{1 1 1} facet. This change in facet leads to variations in surface energy levels of conduction band (CB) and valence band (VB) on different crystal surfaces, preventing electron-hole recombination.
Article
Chemistry, Inorganic & Nuclear
Zaichun Sun, Huijuan Zhang, Bingchu Mei
Summary: In this study, (001)-and (102)-oriented BiOI thin films were synthesized for the first time using mist chemical vapor deposition at atmospheric pressure. The (102)-oriented BiOI thin film showed better photoelectrochemical response compared to the (001)-oriented film, due to enhanced charge separation and transfer efficiency. The intensive surface band bending and larger donor density of the (102)-oriented BiOI were the main reasons for the efficient charge transport. Additionally, the BiOI-based photoelectrochemical-type photodetector exhibited excellent photodetection performance.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Jian Wang, Wei Lin, Shulan Zhou, Zheng Li, Hao Hu, Yinglong Tao, Shijian Zhou, Xian Zhao, Yan Kong
Summary: This work presents a novel method for synthesizing TiO2 with Ti3+ defects exclusively embedded in the bulk lattice near the surface. The presence of both ethanol and HF is essential for precise location control of the formed Ti3+ defects. Extensive analysis using various techniques and theoretical simulation clarify the mechanism behind the precise control of the Ti3+ defect sites.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Jin Ye, Jiating Xu, Chunsheng Li, Di Tian, Xiaohan Zhao, Qiang Wang, Wubin Lv, Jun Wang, Haijiao Xie, Yudong Li, Zhiguo Liu, Yujie Fu
Summary: Utilizing semiconductors to improve nitrogen conversion efficiency, the formation of multiple heterojunctions has significantly enhanced the rate of nitrogen fixation.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Engineering, Environmental
Liantao Sun, Xiaoliang Liang, Hongmei Liu, Haijie Cao, Xuehua Liu, Ye Jin, Xingyun Li, Sheng Chen, Xiaodong Wu
Summary: Defects engineering in metal oxide is crucial for enhancing the catalytic oxidation of VOCs. In this study, the influence of crystal facet of Co3O4 on propane oxidation was investigated, and intelligent Cu doping was performed on the most active (110) facet exposed Co3O4 catalyst. The optimized catalyst demonstrated significantly enhanced activity by activating Co-O bond and generating active oxygen species. This study provides valuable insights for the design of non-precious metal catalysts in VOCs abatement.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Review
Chemistry, Physical
Cheng Hu, Na Tian, Yihe Zhang, Hongwei Huang
Summary: This review summarizes recent advances in facet design of two-dimensional bismuth-based semiconductors, focusing on facet-dependent charge carrier migration and photocatalytic applications, with highlighted strategies such as pH regulation and piezoelectric/ferroelectric polarization for controlling facet-selective charge separation.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Nguyen Duc Van, Do Thi Anh Thu, Ngo Thi Hong Le, Doan Tuan Anh
Summary: The low-temperature phase stabilization, exposed {1 0 0} facet growth, and solar light photocatalytic activity of alpha-Ag3VO4 microcrystals were achieved through a template-free hydrothermal procedure. The addition of ammonia and the stoichiometric AgNO3/NH4VO3 molar ratio played important roles in controlling the crystal growth and inhibiting the formation of less photoactive phases.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2022)
Article
Engineering, Chemical
Guofeng Qiu, Yang Guo, Yixin Zhang, Xu Zhao, Jie Xu, Sixi Guo, Fanhui Guo, Jianjun Wu
Summary: This study develops a method to convert waste bamboo shavings into carbon electrode materials with high specific surface area and hierarchical porous structure for supercapacitor applications. The optimized pore structure and surface modification result in excellent electrochemical properties, including high capacitance and cycling stability. This research provides a valuable reference for the design and preparation of low-cost biomass-based hierarchical porous carbon with outstanding performance for supercapacitors.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Xinze Li, Jiliang Ma, Hongquan Fu, Zhendong Liu, Junqiang Zhang, Rui Cui, Yanzhu Guo, Shuangquan Yao, Runcang Sun
Summary: In this study, a RuS2@CN-x photocatalyst with only exposed crystal face (200) was prepared and used for the photocatalytic C-C bond cleavage of biomass-based sugars coupling with water splitting to co-generate lactic acid and hydrogen. The RuS2 (200) crystal face combined with the interfacial synergism between CN and RuS2 effectively improved the visible light absorption and carrier transfer efficiency. Furthermore, the RuS2@CN-2 exhibited superior activity for synchronous water splitting and biomass conversion.
Proceedings Paper
Materials Science, Multidisciplinary
M. J. Priya, P. P. Subha, M. K. Jayaraj, K. Rajeev Kumar
Summary: SnO2 octahedral nanoparticles with high energy facet were successfully synthesized using a simple hydrothermal technique. The microstructural analysis revealed the crystal structure of the sample. The gas sensing properties of the sample were investigated, and the device fabricated using the sample showed a higher response to hydrogen sulphide. Furthermore, the device can be used for the early-stage detection of halitosis by identifying the presence of hydrogen sulphide in exhaled breath.
MATERIALS TODAY-PROCEEDINGS
(2022)