Article
Chemistry, Analytical
Chen Wang, Runlong Li, Lingyan Feng, Jiaqiang Xu
Summary: In recent years, the two-dimensional layered material MXene has gained significant attention in the field of sensors due to its large specific surface area and rich active sites. By preparing SnO2/MXene composites using multilayer Ti3C2TX and SnO2 microspheres, the gas-sensing properties of pristine SnO2 have been enhanced. The composite was used to fabricate low power consumption resistance-type gas sensors on a microelectromechanical system (MEMS) platform. The results showed that the SnO2/MXene sensor with the best composite ratio greatly improved the gas sensitivity of SnO2 sensor, particularly to ethanol gas. The composite also accelerated the response recovery speed of the sensor.
Article
Materials Science, Multidisciplinary
Olavo M. Perrone, Antonio C. Roveda Jr, Daniel A. de Moraes, Reinaldo dos Santos Theodoro, Diogo P. Volanti
Summary: This article introduces a high surface area sensor based on SnO2 nanoparticles deposited on NiO nanocuboids, which shows high response to ethanol. Through a specific synthesis process, a portable device with low cost and low detection limits, good selectivity and easy and fast synthesis for ethanol detection is developed. After 20 cycles of operation, the developed material shows a response to ethanol with R-air/R-gas = 84 +/- 6 at 350 degrees C, and it performs better at lower temperatures compared to other materials.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Chemistry, Analytical
Huaipeng Weng, Xumeng Dong, Yufeng Sun, Haibo Ren, Jiarui Huang, Sang Woo Joo
Summary: Ag@SnO2 nanosheets were prepared by a hydrothermal method followed by heat treatment and a liquid reduction process. The Ag@SnO2 nanosheet sensors showed improved gas-sensing behaviors compared to the pure SnO2 nanosheet sensor.
Article
Materials Science, Multidisciplinary
Xiaohu Wang, Shichao Wang, Jian Tian, Hongzhi Cui, Xinzhen Wang
Summary: The microstructure and composition of materials have significant impacts on the gas sensing performance of sensors. In this study, a well-constructed heterostructure of 1D SnO2 nanorods and 2D NiO porous nanosheets was successfully prepared for the detection of ethanol gas. The heterostructure exhibited increased number of active sites and controlled electron transfer, resulting in high response and fast response-recovery speed.
Article
Materials Science, Multidisciplinary
Yu-Jen Hsiao, Zhong-Hong Shi, Yempati Nagarjuna, Zhong-Yan Huang, Tang-Yu Lai, Sean Wu
Summary: In this study, a Micro Electro Mechanical Systems (MEMS) sensor was fabricated for testing low concentration gas sensing of sulphur dioxide (SO2). The performance of a single layered tin oxide (SnO2) sensing layer and a double layered heterojunction structure of nickel oxide and tin oxide (NiO/SnO2) were compared, and it was found that the NiO/SnO2 double layered sensor had better sensing characteristics due to the formation of p-n junctions. The maximum sensing response of the NiO/SnO2 sensor was recorded as 20% at 400 ppb SO2 gas concentration, and 30% at 2000 ppb.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Run-Hui Wang, Wei Wen, Shilie Zheng, Zhizhen Ye, Jin-Ming Wu
Summary: In this study, a layered mesoporous aggregate of tin oxide nanocrystals with high specific surface area and mesoporous structure was synthesized. The tin oxide showed high ethanol sensing performance at low temperatures, with high selectivity and stability. The ethanol sensing mechanism changed with increasing operating temperature.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Materials Science, Ceramics
Lili Jiang, Sihao Tu, Kang Xue, Haitao Yu, Xingang Hou
Summary: In this study, a SnO2/NiO composite material was prepared through co-precipitation, followed by the synthesis of a GO/SnO2/NiO ternary composite material. The ternary composite showed improved gas sensitivity to acetone compared to SnO2/NiO, with enhanced response time, recovery time, and sensitivity. GO/SnO2/NiO demonstrated great potential in acetone gas detection due to its unique structures and synergistic effects.
CERAMICS INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
Xiaofan Liu, Jian Zhao, Yongguang Wang, Yan Hu, Linjie Xu, Longchao Yao, Chenghang Zheng, Jian Yang, Xiang Gao
Summary: In this study, Pt-loaded SnO2 monodispersed nanoparticles were prepared and a sensor based on micro-electro-mechanical system (MEMS) was assembled to detect toluene. The Pt-loaded SnO2 sensor showed significantly higher gas sensitivity to toluene and stable response to 100 ppb of toluene. It also demonstrated fast response time, excellent dynamic response-recovery characteristics, selectivity, and stability. The improved performance of the sensor can be attributed to the increase of oxygen vacancies and chemisorbed oxygen species, as well as the electronic and chemical sensitization of Pt.
Article
Chemistry, Physical
Jiarui Huang, Chunyu Meng, Hui Wang, Haibo Ren, Xiaojing Lu, Sang Woo Joo
Summary: In this study, cross-linked porous tin dioxide nanosheets were successfully synthesized using three-dimensional reduced graphene oxide as a template. The resulting nanosheets exhibited high sensitivity to toxic organic vapors, making them promising candidates for practical detectors of volatile organic compounds.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Yong Tan, Jun Zhang
Summary: In this work, an ethanol gas sensor based on Co-doped SnO2 nanobelts was fabricated. The Co-doped SnO2 nanobelts were prepared using chemical vapor deposition method and gas sensors were prepared using powder screen printing technology. The gas sensor based on Co-doped SnO2 nanobelts exhibited better gas response and shorter response time and recovery time compared to the gas sensor based on pure SnO2 nanobelts.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2023)
Article
Materials Science, Ceramics
Jian Fang, Xi Chen, Rong-Pu Xiao, Jing-Jing Xue, Ji-Ming Song
Summary: In this study, Pr-SnO2/In(2)O(3) composite material was successfully prepared by synthesis and decoration methods, and it showed good sensing performance for ethanol gas.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Analytical
Li Wang, Shuyi Ma, Jianpeng Li, Andong Wu, Didi Luo, Tingting Yang, Pengfei Cao, Nina Ma, Yahui Cai
Summary: This work presents a method for synthesizing Mo-doped SnO2 nanotubes with uniform morphology, which enhances gas adsorption by creating new lattice defects. The optimal doping concentration of transition metal elements is essential for achieving the best sensing response in metal-oxide NTs gas sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Electrical & Electronic
Junliang Zhang, Shuyi Ma, Bingji Wang, Shitu Pei
Summary: The composite SnO2/CuO nanotubes were prepared by uniaxial electrospinning, which showed excellent selectivity for ethanol. The response value of ethanol had a good linear relationship with concentration, indicating potential for gas sensing applications.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Nanoscience & Nanotechnology
Xiaoyan Song, Fangzheng Zhao, Zhipeng Wang, Runbin Ge, Jinfeng Xing
Summary: In this study, ZnO@SnO2-Pt core-shell nanofibers with a hollow structure were successfully prepared and exhibited superior gas-sensing performance, achieving higher response speed and sensitivity on the basis of reduced operating temperature. Additionally, the gas-sensing mechanism of the nanofibers was discussed in detail.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Junliang Zhang, Shuyi Ma, Bingji Wang, Shitu Pei
Summary: The SnO2-CuO composite nanoparticles fabricated as an ethanol gas sensor exhibit excellent sensitivity and selectivity to ethanol, with short response recovery time and good linear relationship between response value and ethanol concentration, mainly due to the special heterostructure and synergistic effect between tin oxide and copper oxide.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Zoology
Xiaoning Chen, Xiang Hou, Tuo Feng, Ning Han, Jing Wang, Gang Chang
Summary: The experiments showed that the combined levonorgestrel and quinestrol had an impact on the fertility of striped field mice, inducing infertility in male mice. Additionally, in the field, the population density of the mice was significantly lower in the treatment group with EP-1, indicating the effectiveness of EP-1 as a contraceptive.
INTEGRATIVE ZOOLOGY
(2022)
Article
Electrochemistry
Jialin Zhao, Fu Zhao, Haolin Li, Youlin Xiong, Shuangfei Cai, Chen Wang, Yunfa Chen, Ning Han, Rong Yang
Summary: This study highlights an electrochemical immunosensor for sensitive detection of the SARS-CoV-2 antigen marker spike protein. The sensor utilizes surface-clean Pd-Au nanosheets as a substrate and functionalized superparamagnetic nanoparticles as sample separators and signal amplifiers, enabling stable and sensitive detection of the spike protein.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Anqi Wang, Jian Guan, Le Zhang, Hang Wang, Guojun Ma, Guijun Fan, Wenxiang Tang, Ning Han, Yunfa Chen
Summary: In this study, monolithic Cu2O-CuO/Cu catalysts were prepared by in situ thermal oxidizing-reducing copper foam. The obtained catalyst exhibited high catalytic activity towards O-3 removal, which can be attributed to the generated Cu+/Cu2+ redox couples, the donor/acceptor-type point defects, and the Cu2O-CuO p-p heterojunction. This research is of great importance for rapid, controllable, and productive O-3 removal applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Plant Sciences
B. Buerte, Zhanghui Zeng, Chun Zhou, Guiwei Lian, Fu Guo, Junhui Wang, Ning Han, Muyuan Zhu, Hongwu Bian
Summary: This study identified five new proteins that interact with ATG8 in autophagy and demonstrated the direct interaction between RPP3 and ATG8. The results provide a basis for further investigations on novel receptors and functions of autophagy in plants.
PLANT AND CELL PHYSIOLOGY
(2022)
Article
Chemistry, Physical
Le Zhang, Jiawei Yang, Anqi Wang, Shaohua Chai, Jian Guan, Linfeng Nie, Guijun Fan, Ning Han, Yunfa Chen
Summary: The study found that the synthesis of (Mn,Co)(3)O-4 catalyst can accelerate the decomposition of ozone, thereby improving efficiency. The synergy between Mn and Co in the reaction can promote the rate-determining steps.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Physics, Applied
Shaoyuan Zhou, Ying Wang, Chengjie Deng, Peilin Liu, Jianbing Zhang, Nan Wei, Zhiyong Zhang
Summary: This study demonstrates a thin film transistor (TFT) based short-wave infrared photodetector using a heterojunction of carbon nanotubes (CNT) and PbS colloidal quantum dots (CQDs). The CQDs efficiently absorb infrared light and generate a photovoltage at the heterojunction, which is further amplified and transduced by the CNT TFT. The detector shows high sensitivity and fast response, making it competitive with state-of-the-art epitaxial semiconductors.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Fluids & Plasmas
Jinwen Cao, Xian Meng, Ning Han, Wenxia Pan, Chengkang Wu, Heji Huang
Summary: In this study, a weakly compressible plasma jet produced by an arc torch was diagnosed using a Langmuir triple probe. The two-dimensional distributions of electron density and electron temperature were obtained, revealing that in some regions of the plasma jet, electron density increases while electron temperature decreases with an increase in arc power.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Zihao Huang, Xuejian Li, Huaqiang Du, Fangjie Mao, Ning Han, Weiliang Fan, Yanxin Xu, Xin Luo
Summary: In this study, the BPNN_CA_SD coupled model was used to simulate future land use and cover change in subtropical forests in Zhejiang Province. Four different development scenarios were designed, and the results showed the accuracy of the model and the characteristics of forest dynamics under different scenarios.
Article
Plant Sciences
Fu Guo, Peijing Zhang, Yan Wu, Guiwei Lian, Zhengfei Yang, Wu Liu, B. Buerte, Chun Zhou, Wenqian Zhang, Dandan Li, Ning Han, Zaikang Tong, Muyuan Zhu, Lin Xu, Ming Chen, Hongwu Bian
Summary: This study investigates the regulatory mechanisms of OsLEC1 in monocot seed development, revealing its role in regulating photosynthesis and hormonal pathways, and inhibiting embryo greening.
FRONTIERS IN PLANT SCIENCE
(2022)
Review
Biochemistry & Molecular Biology
Xinxing Yang, Jie Chen, Yuan Ma, Minhua Huang, Ting Qiu, Hongwu Bian, Ning Han, Junhui Wang
Summary: Plant melatonin plays versatile roles in regulating plant growth and development through antioxidative, hormone crosstalk, and signaling mechanisms. This study provides a comprehensive analysis of barley melatonin biosynthesis genes and the effects of exogenous melatonin on barley growth and development. Understanding the function and regulation of barley melatonin can help enhance barley production, reduce pesticide usage, and improve the nutritional and healthcare values of barley in the food industry.
Article
Biology
Jing Wang, Xiang Hou, Bo Zhang, Ning Han, Tuo Feng, Xiaolei An, Xiaoning Chen, Jidong Zhao, Gang Chang
Summary: In this study, we monitored the seed rain dynamics of four sympatric Fagaceae species in the Qinling Mountains of China for 10 consecutive years. We found differences in seed rain dynamics among the four species, indicating no concentrated flowering and fruiting and enabling them to avoid fierce competition for resources. Additionally, their seed rain dynamics showed different sensitivities to climate factors, which contributed to their coexistence through reduced consumption by seed predators.
Article
Nanoscience & Nanotechnology
Hang Wang, Guijun Fan, Zaixing Yang, Ning Han, Yunfa Chen, Jun Yang
Summary: In this study, single-crystalline As-doped In2O3 nanowires were successfully synthesized by chemical vapor deposition at a low growth temperature. The obtained nanowires showed a narrow diameter distribution and a preferential growth direction. Gas sensing experiments demonstrated diameter dependent response, indicating the potential applications of these nanowires in various technologies.
ACS APPLIED NANO MATERIALS
(2022)
Article
Environmental Sciences
Naipeng Han, Qichao Zhao, Hongyi Ao, Hongjuan Hu, Chenxi Wu
Summary: This study investigates the horizontal transport of macro- and microplastics on the soil surface through runoff induced by rainfall. The presence of vegetation was found to significantly enhance the retention of plastics, and smaller and lower density plastics exhibited higher mobility. Herb plants showed better interception efficiency compared to shrub plants, and increasing plant density contributed to the interception of microplastics. Increasing rainfall amount enhanced the transport of plastics.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Chengcheng Miao, Yanmei Zang, Hang Wang, Xinming Zhuang, Ning Han, Yanxue Yin, Yandong Ma, Ming Chen, Ying Dai, SenPo Yip, Johnny C. Ho, Zai-xing Yang
Summary: By simple heteroatom doping, the d-band center position of ultra-thin 2D Ni5P4 nanosheets can be manipulated, leading to efficient hydrogen evolution reaction (HER). Proper Co doping achieves the best electrocatalytic performance with excellent stability.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Environmental Sciences
Guojun Ma, Wenxiang Tang, Anqi Wang, Le Zhang, Jian Guan, Ning Han, Yunfa Chen
Summary: This work develops a CuO/Cu2O heterojunction catalyst with high ozone conversion rate by heating Cu2O at high temperature. The heterojunction promotes electron transfer, creates defects and oxygen vacancies at the CuO/Cu2O interfaces. This manufacturing procedure could be applied to other metal oxide catalysts and has potential for future synthesis of high-efficiency heterostructured catalysts.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)