Article
Chemistry, Analytical
Thi To Nga Phan, Thi Tra My Dinh, Minh Duc Nguyen, Dan Li, Chi Nhan Phan, Trung Kien Pham, Cong Tu Nguyen, Thanh Huyen Pham
Summary: The hollow LaFeO3 sensor synthesized by a hydrothermal method with cetyl-trimethylammonium bromide exhibited enhanced sensing performance towards ethanol gas, showing potential for future practical use in trace ethanol detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Materials Science, Composites
Zeyu Zhang, Zheng Zheng, Yongliang Zhao, Jianhua Hu, Haitao Wang
Summary: A highly stretchable porous composite hydrogel with excellent mechanical properties and conductivity has been developed using graphene oxide-stabilized Pickering foam templates, allowing for detection of various human motions. The easy preparation process and outstanding performance of these porous composite hydrogels facilitate the development of flexible wearable strain sensing materials.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Mohamed Jaffer Sadiq Mohamed, Mohammed Ashraf Gondal, Aroob Mohammed Ibrahim Surrati, Munirah Abdullah Almessiere
Summary: In this work, a new type of oxygen vacancies and Ti3+ defective perovskite nanostructures (DPNSs) of D-CoTiO3-x were prepared using an eco-friendly sonochemical assisted laser irradiation technique. These DPNSs exhibited excellent electrochemical performance with low over-potential, reduced Tafel slope, high double layer capacitance, large electrochemically active surface area, and exceptional long-term stability. The improved hydrogen evolution efficiency was attributed to the induced synergistic strong metal-support interaction effect of the surface oxygen vacancies and Ti3+ defects in DPNSs, which enhanced conductivity, exposed abundant active sites, increased active surface area, improved kinetics, and facilitated fast charge transport. Furthermore, the DPNSs-based electrode operated through the Volmer-Heyrovsky reaction mechanism and outperformed in terms of electrocatalytic hydrogen activity and stability in natural seawater.
RESULTS IN PHYSICS
(2023)
Article
Materials Science, Ceramics
Chen Yang, Donglei Bu, Shaoming Huang
Summary: Highly porous BCN materials with controllable morphology were successfully synthesized using a solvent-free ball milling and pyrolysis process. The as-synthesized BCN showed excellent adsorption performance and could be easily regenerated.
CERAMICS INTERNATIONAL
(2022)
Article
Physics, Multidisciplinary
Saptarshi Karmakar, Raj Kiran, Rahul Vaish, Vishal Singh Chauhan, Sobhy M. Ibrahim, Alia M. Almoajel
Summary: The study conducted on porous cement-based 0-3 piezocomposite materials revealed that the elastic and piezoelectric properties increase with an increase in the volume fraction of the piezoelectric material, while they decrease with an increase in the volume fraction of pores. Maximum sensing voltage is obtained at the natural vibration frequency of the structure.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Article
Chemistry, Physical
M. B. Kgomoa, K. Shingange, H. C. Swart, G. H. Mhlongo
Summary: A high-performance ethanol functional nanosensor based on Cr-doped In2O3 nanofibers was prepared, which showed improved ethanol sensing capabilities. The response and selectivity of the Cr-doped sensors towards 50 ppm ethanol at 80℃ were significantly higher compared to the pure In2O3 sensor. The 1 mol% Cr-doped In2O3 sensor exhibited the highest response of 12, 10 times higher than the pure In2O3 sensor, with fast response kinetics and a low detection limit of 2.19 ppm.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Guotao Yuan, Yihong Zhong, Yufeng Chen, Qiqi Zhuo, Xuhui Sun
Summary: Highly sensitive and fast detection of volatile organic compounds (VOCs) in industrial and living environments is urgently needed. In this study, a Pd modified Co3O4 hollow polyhedral (Pd/Co3O4 HP) gas sensor was developed through one-step pyrolysis of a Pd doped MOF precursor. Near-ambient pressure X-ray photoelectron spectroscopy (NAPXPS) was used to monitor the dynamic changes in the surface state of Pd/Co3O4 HP.
Article
Nanoscience & Nanotechnology
Qiang Zhao, Huan Yang, Bangbang Nie, Yongsong Luo, Jinyou Shao, Gang Li
Summary: A convenient and cost-effective fabrication method for metallic nanogaps was proposed, which combines photolithographic metal patterning, swelling-induced nanocracking, and superimposition metal sputtering. The fabricated nanogap array showed excellent performance for molecule measurements and demonstrated high sensitivity for single-molecule detection.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Wei Wu, Xia Xiang, Xiaotao Zu
Summary: The study investigates the humidity sensing performance and mechanism of SAW sensors with CA films, showing that the porous microstructure and strong interaction with water molecules of the CA films greatly improve the sensor's humidity sensing performance. The sensors exhibit fast and linear response to humidity, with extremely low responses to other gases.
IEEE SENSORS JOURNAL
(2022)
Article
Spectroscopy
Yongtao Wang, Pan Li, Dongyue Lin, Jianyi Chen, Yunfeng Zhang, Liangbao Yang
Summary: This study utilized surface-enhanced Raman spectroscopy combined with solvent extraction to detect and separate poisons in various oily matrices efficiently. The use of ethanol as the extracting agent showed promising results, enabling rapid and reliable detection process with the potential application in emergency response and public safety.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Multidisciplinary Sciences
Jinbo Chen, Yingguo Yang, Hua Dong, Jingrui Li, Xinyi Zhu, Jie Xu, Fang Pan, Fang Yuan, Jinfei Dai, Bo Jiao, Xun Hou, Alex K-Y Jen, Zhaoxin Wu
Summary: By capping the photoactive layer with low-dimensional perovskitoids, the efficiency and stability of perovskite solar cells can be effectively improved. The low-dimensional perovskitoids can passivate surface defects and provide excellent protection, allowing the cells to maintain high efficiency under severe environmental conditions.
Article
Chemistry, Physical
Yufeng Zhang, Wei Zhu, Jinjie Fang, Zhiyuan Xu, Yanrong Xue, Di Liu, Rui Sui, Qingqing Lv, Xuerui Liu, Yongsheng Wang, Wei Chen, Zhongbin Zhuang
Summary: Defective Ni3S2 nanowires were synthesized and showed high activity for electrochemical oxidation of ethanol to acetate. The high activity of Ni3S2 nanowires is attributed to the oriented attachment method used for synthesis and the presence of rich defects in the structure.
Article
Chemistry, Analytical
Duo Sun, Wei Wang, Nan Zhang, Caixia Liu, Xin Li, Jingran Zhou, Shengping Ruan
Summary: This paper reports a new type of high-performance formaldehyde gas sensor using g-C3N4 nanosheets to modify the surface of In2O3 nanospheres as the sensing material. The sensor showed a 2-fold response increase compared to pure In2O3 when loaded with 12 wt% g-C3N4, with low operating temperature and short response time.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Nanoscience & Nanotechnology
Yidong Zhang, Wangfang Deng, Meiyan Wu, Zhexuan Liu, Guang Yu, Qiu Cui, Chao Liu, Pedram Fatehi, Bin Li
Summary: Recently, a novel, low-cost, and stable pulp foam evaporator has been developed for solar-driven seawater desalination. This evaporator, made of carbonized pulp-natural rubber foam, exhibits high evaporation rate and efficiency due to its unique porous structure and light absorption ability. Furthermore, it shows high cost-effectiveness and potential applications in various water treatment processes.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Multidisciplinary Sciences
Dongrui Liu, Dongyang Wang, Tao Hong, Ziyuan Wang, Yuping Wang, Yongxin Qin, Lizhong Su, Tianyu Yang, Xiang Gao, Zhenhua Ge, Bingchao Qin, Li-Dong Zhao
Summary: Tin selenide (SnSe) crystals were found to have potential power generation and Peltier cooling performance. By filling Sn vacancies, the scattering of defects was weakened and the carrier mobility was boosted, resulting in a power factor exceeding 100 μW/(cm·K^2) and a figure of merit (ZT) of approximately 1.5 at 300K, with an average ZT of about 2.2 from 300 to 773K. A single-leg efficiency of about 12.2% under a temperature difference (DT) of about 300K and a seven-pair Peltier cooling DTmax of about 61.2K at ambient temperature was achieved.
