Review
Engineering, Environmental
Aswathy Babu, Irthasa Aazem, Ryan Walden, Satyaranjan Bairagi, Daniel M. Mulvihill, Suresh C. Pillai
Summary: This review presents the recent advances in triboelectric nanogenerators (TENGs), including material combinations, fabrication methods, and application areas. Electrospun nanofiber materials prepared by electrospinning exhibit remarkable physical and chemical characteristics for enhancing TENG performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yang Tang, Jun Yan, Wei Xiao, Xuewu Huang, Longcheng Tang, Yongqian Shi, Pingan Song, Jiefeng Gao
Summary: In this study, an asymmetric nanofibrous membrane (ANM) with unidirectional water transport capability was reported. The membrane consists of a superhydrophilic MXene/Chitosan/Polyurethane nanofiber membrane and an ultrathin hydrophobic Polyurethane/Polyvinylpyrrolidone layer with a bead-on-string structure. The ANM exhibits long-term stability and can withstand cyclic stretching, abrasion, and ultrasonic washing tests. It also serves as a temperature sensor and displays unique anti-gravity behavior when attached to the skin. The stretchable, wearable, and multi-functional nanofibrous composite membrane shows potential applications in flexible electronics, wearable devices, and health monitoring.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Composites
Mahmoud Roushani, Masoumeh Sarabaegi, Hadi Hosseini
Summary: The development of flexible and binder-free electrocatalytic materials based on low-cost metal dichalcogenide and low-weight carbon nanofibers has enabled the fabrication of advanced portable, wearable, and stretchable sensor devices. The NiP2/CNCNF designed in this work serves as a flexible electrode for electrocatalytic and nonenzymatic glucose sensing, exhibiting high conductivity, flexibility, and enhanced electron transfer rate.
COMPOSITES COMMUNICATIONS
(2021)
Article
Biochemistry & Molecular Biology
Le Xu, Xi Liu, Jiao Jia, Hao Wu, Juan Xie, Yongtang Jia
Summary: Accurate and sensitive pH sensing and monitoring in the environment are crucial for human health. Nanomaterials and nanotechnology combined with fluorescent materials provide excellent opportunities for developing high-performance sensing membranes and monitoring pH effectively. In this study, fluorescent nanofiber membranes (NFMs) containing poly-1,8-naphthimide derivative-3-[dimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]azaniumyl]propane-1-sulfonate (PNI-SBMA) were fabricated by electrospinning. The NFMs showed outstanding hydrophilicity due to surfactant-like functionalities in the side chains of PNI-SBMA, and the naphthimide derivatives exhibited sensitivity to pH through the photoinduced electron transfer effect, enabling efficient pH fluorescence sensing applications of the NFMs. Among the NFMs, the PNI-SBMA/PVA NFM with a ratio of 1:9 (NFM2) demonstrated high sensitivity and good cyclability to pH.
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
Nanoscience & Nanotechnology
Maryanne E. Spiers, David J. Nielsen, Karl D. Pavey, Yen B. Truong, Gregory C. Rutledge, Peter Kingshott, Daniel S. Eldridge
Summary: A novel dissolution method for preparing high-concentration, high-molecular-weight doped polyaniline solutions was reported, which were processed into nanofibers for colorimetric gas sensing. Substrates generated from electrospinning of PANi-CSA demonstrated linear response to ammonia exposure at different levels of humidity.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
R. M. Abdel Hameed, Abdullah M. Al-Enizi, Alamgir Karim, Ayman Yousef
Summary: The in-situ chemical reduction technique was used to fabricate free-standing and binder-free active nanocatalyst materials for direct ethanol fuel cells. Nickel nanoparticles were loaded onto a polyvinylidenefluoride-co-hexafluoropropylene membrane, showing a homogeneous distribution with face-centered cubic structure. Cyclic voltammetric measurements demonstrated the enhanced activity of the membrane for ethanol oxidation in alkaline solution.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Jin Yeong Song, Seongmin Kim, Jaeseong Park, Sang Min Park
Summary: In this study, highly efficient and dual-functional self-assembled electrospun nanofiber (SAEN) filters were developed for simultaneous particulate matter (PM) removal and formaldehyde sensing. By adding a formaldehyde-sensitive colorimetric agent during electrospinning, the SAEN filter can be fabricated on commercial masks in one step. The filter not only improves PM filtration efficiency but also detects formaldehyde gas by changing color. This research provides new insights into designing and developing high-performance dual-functional electrospun nanofiber filters.
ADVANCED FIBER MATERIALS
(2023)
Article
Chemistry, Analytical
Long Chen, Haozhou Shi, Chenjia Ye, Xiaoyu Xia, Yi Li, Chenying Pan, Yanhua Song, Jun Liu, Hao Dong, Di Wang, Xing Chen
Summary: Au decorated In-doped SnO2 porous nanotubes were fabricated and showed good ethanol sensing properties. The 3% mol Au decorated In-doped SnO2 porous nanotubes had high response to ethanol and could detect ethanol down to 50 ppb at a low working temperature of 150 degrees C. The gas sensor also demonstrated high selectivity, reversibility, and long-term stability, attributed to factors such as oxygen vacancies, catalytic activity of Au nanocatalysts, and porous structures.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Physical
Yuanyi Zhang, Xia Xin, Hui Sun, Qianru Liu, Jinniu Zhang, Gang Li, Jianzhi Gao, Hongbing Lu, Chunlan Wang
Summary: The porous ZnO-SnO2-Zn2SnO4 heterojunction nanofibers were prepared using electrospinning and high ramp rate heat treatment, showing significantly enhanced ethanol sensing capabilities under UV light irradiation. The response of ZnO-SnO2-Zn2SnO4 nanofibers to ethanol was much higher than that of pure Zn2SnO4 nanofibers, and remained effective even in high humidity conditions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Feng Sun, Haina Qi, Yunrui Xie, Da Xu, Hong Shao, Wensheng Yu, Feng Li, Xiangting Dong
Summary: Novel TiO2//Bi2WO6 Janus nanofibers (JNFs) were successfully fabricated via a facile conjugated electrospinning, and used to manufacture gas sensors with high selectivity for ethanol gas molecules and fast response and recovery speed. The unique heterostructures formed by TiO2 and Bi2WO6 on both sides of Janus nanofibers through close interfacial contact promote charge transfer and enhance gas sensing properties of the JNFs. The gas sensor based on this unique heterostructure has great potential in the field of gas detection.
Article
Materials Science, Ceramics
Kelin Hu, Feipeng Wang, Yuyang Yan, Hongcheng Liu, Zijia Shen
Summary: A novel hybrid structure of Pd doped ZnO/SnO2 heterojunction nanofibers with hexagonal ZnO columns was successfully synthesized in a single step from electrospun precursor nanofibers. The structure exhibited excellent hydrogen gas sensing properties at low temperature, with high response to H2 gas, rapid response/recovery times, good selectivity, and excellent linearity. Characterization of the materials was done using XRD, FESEM, HRTEM, XPS, and synthesis mechanism and gas sensing mechanism were proposed.
CERAMICS INTERNATIONAL
(2021)
Review
Nanoscience & Nanotechnology
Prerana Rathore, Jessica D. Schiffman
Summary: Electrospinning is increasingly popular for producing fibrous assemblies with high surface area, and coaxial electrospinning has emerged as a modified version to address limitations of traditional methods. This review discusses the mechanism of coaxial electrospinning, operational parameters for fabricating continuous fibers, and modifications to improve fiber properties. Examples of diverse applications and current limitations of coaxial electrospinning are also included for discussion.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Biochemistry & Molecular Biology
Khandsuren Badgar, Jozsef Prokisch
Summary: This study aimed to produce electrospun nanofibers from a PVB solution enriched with red and grey selenium nanoparticles. The obtained nanofibers have an average diameter of around 500 nm, a specific surface area of approximately 8 m²/g, and a length of 5093 km/cm³. Depending on the synthesis method, the selenium nanoparticles are located either inside or outside the fiber, making these nanofiber sheets enriched with selenium nanoparticles potential candidates for high-efficiency filter materials and medical applications.
Article
Materials Science, Multidisciplinary
Jieling Zhang, Tao Yang, Guo Tian, Boling Lan, Weili Deng, Lihua Tang, Yong Ao, Yue Sun, Wanghong Zeng, Xiarong Ren, Zhaoyu Li, Long Jin, Weiqing Yang
Summary: This article introduces spatially confined MXene/polyvinylidene fluoride (PVDF) nanofibers for piezoelectric applications, which can sense pressure and harvest energy simultaneously. The spatial confinement induces optimal alignment of PVDF dipoles and significantly enhances the piezoelectric performance. The voltage and current generated by the fabricated MXene/PVDF nanofiber piezoelectric devices are 3.97 times and 10.1 times higher than pure PVDF nanofibers, respectively. This research enables the development of nanofibers with excellent piezoelectric performance using a spatial confinement mechanism.
ADVANCED FIBER MATERIALS
(2023)
Article
Materials Science, Ceramics
Hangfei Li, Tong Liu, Yanbin Wang, Sunyingyue Geng, Ting Xu, Minghui Cao, Shuangqing Fan, Tao Liu, Jie Su
Summary: A selfdesigned Ag/CeO2/Pt memristor was found to exhibit excellent performance and has potential value in artificial neural synapse simulation applications.
CERAMICS INTERNATIONAL
(2022)
Article
Energy & Fuels
Xianqiang Song, Haixue Wang, Xiaofei Fu, Lingdong Meng, Yonghe Sun, Zhida Liu, Ruishan Du
Summary: Study on fault-bounded traps along active faults shows that the main factor influencing hydrocarbon leakage mechanisms is retention capacity and fault sealing capacity. Fault activation plays a critical role in oil leakage. Results suggest that post-charge reactivation is the likely mechanism for oil leakage, with a critical threshold throw of 202-208 m. This study enhances understanding of hydrocarbon leakage in traps bounded by faults in the Bohai Bay Basin, which is crucial for hydrocarbon exploration and production.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Review
Materials Science, Multidisciplinary
Ling-Yun Gai, Run-Ping Lai, Xian-Hui Dong, Xing Wu, Qiao-Tong Luan, Jue Wang, Hao-Feng Lin, Wen-Hao Ding, Guang-Lei Wu, Wan-Feng Xie
Summary: Metal oxide semiconductor heterojunctions can greatly improve the performance of ethanol gas sensors and have various advantages. The synergy between different components in the heterojunctions enhances the performance of the ethanol gas sensors.
Article
Chemistry, Analytical
Xin-Yu Huang, Zong-Tao Chi, Woochul Yang, Yonghui Deng, Wan-Feng Xie
Summary: In this study, Bi2O2CO3/In(OH)(3)·xH2O nanocomposites were synthesized using a two-step hydrothermal process and applied for the detection of isopropanol gas. The results showed that the sensors based on the nanocomposites exhibited outstanding sensing performances with excellent response, wide concentration detection range, low working temperature, and high selectivity towards isopropanol.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Muhammad Hilal, Wanfeng Xie, Woochul Yang
Summary: A 3D straw-sheaf-like cobalt oxide was prepared without the assistance of template or surfactant using hydrothermal method and inert gas calcination. The material exhibited high crystallinity, large surface area, small pore size, and excellent electrochemical stability, making it suitable for non-enzymatic glucose oxidizing electrodes.
Article
Multidisciplinary Sciences
Chengchao Wang, Xiu He, Xianqiang Song, Shanshan Chen, Dongshen Luo
Summary: This study investigates the livelihood impacts of the COVID-19 pandemic on rural households in Southeast China. The results show that the pandemic has caused substantial negative impacts on household income and daily life, with significant heterogeneity among households. The study also highlights the dynamic nature of livelihood impacts and proposes policy suggestions to mitigate the negative consequences.
Article
Nanoscience & Nanotechnology
Hangfei Li, Sunyingyue Geng, Tong Liu, MingHui Cao, Jie Su
Summary: In this study, a CeO2/Nb-SrTiO3 heterojunction memristor with gradually tunable conductance was reported. Its switching behavior and high switching ratio enabled it to mimic various biological synaptic functions. Additionally, a convolutional neural network based on the memristors achieved high recognition accuracy in diagnosing diseases from electrocardiogram data and recognizing handwritten digits. These findings expand the research scope of high-level synaptic behavior and lay the foundation for future full synaptic memristor networks.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Biochemistry & Molecular Biology
Syed Taj Ud Din, Wan-Feng Xie, Woochul Yang
Summary: Three-dimensional hierarchical microspheres of Bi12O17Cl2 (BOC) were fabricated for photocatalytic degradation of pollutants. The photocatalytic performance was enhanced by synthesizing Co3O4 nanoparticles-decorated BOC heterostructures. The hierarchical heterostructure exhibited high surface area and improved photocatalytic efficiency by suppressing the recombination of electron-hole pairs.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Physics, Applied
Jianxing Zhang, Hangfei Li, Tao Liu, Shijie Dong, Sheng Xu, Hailian Li, Jie Su
Summary: This study has successfully prepared a (La-0.67, Sr-0.33)MnO3/BaTiO3-based memristor with good forward and reverse memristor function and multilevel resistive tunability. By varying the amplitude and pulse width of the applied voltage, different synaptic simulations were achieved and a high classification accuracy for handwritten digit data was achieved through an artificial neural network. These results provide important reference value for neural devices.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Ling-Yun Gai, Xiao-Ran Gong, Chen Li, Su-Zhen Wang, Cheng-Te Lin, Re-Jing Zhao, Wan-Feng Xie
Summary: Electrochemical non-enzymatic biosensors based on metal oxide and metal composites have great potential. Hierarchical trimetal oxide hybrid nanocomposites, such as FCN-2/GCE, exhibit excellent performances for enzyme-free glucose detection.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Environmental Sciences
Chengchao Wang, Benxiang Zeng, Xianqiang Song, Dongshen Luo, Tingting Lin
Summary: Wild boar poses a serious threat to agricultural production and rural livelihoods around the world. The impact of the human-wild boar conflict was investigated in a case study conducted in Fu'an City, Fujian Province, Southeast China. The study found that wild boars had a significant overall impact on livelihoods, but the extent of the impact varied depending on certain factors such as the scale of agricultural output value and the dependency on vulnerable crops. Different impacts led to different countermeasures adopted by rural households. Economic losses caused by wild boars determined the selection of prevention measures, with households experiencing greater losses tending to adopt more costly and effective measures such as fencing and human guarding. Recommendations were made to address the human-wild boar conflicts in China.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Lihua Chu, Hao Yan, Wanfeng Xie, Yuxin Shi, Muhammad Hilal, Changxu Sun, Ze Li, Meicheng Li
Summary: In this study, hollow SnO2 nanospheres and few-layer MXene are assembled via facile electrostatic synthesis processes to obtain SnO2/Ti3C2Tx nanocomposites. The sensor based on SnO2/Ti3C2Tx composite exhibits better sensing performances compared to pure SnO2 nanoparticles or hollow nanospheres, including higher response (36.979), faster response time (5 s), and improved selectivity and stability (15 days) towards 100 ppm C2H5OH at low working temperature (200°C). The improved sensing performances are mainly attributed to the large specific surface area and significantly increased oxygen vacancy concentration, providing active sites for gas adsorption and surface catalytic reaction. The heterostructure interfaces between SnO2 hollow spheres and MXene layers also contribute to the gas sensing behaviors due to the synergistic effect.
CHINESE CHEMICAL LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Mingxing Fan, Haixue Wang, Xiaofei Fu, Yanyan Zhang, Zhida Liu, Xianqiang Song, Xiaoyan Wang
Summary: The crude oil from the Damoguaihe Formation and Nantun Formation exhibits similarities, indicating a common hydrocarbon origin. The hydrocarbon accumulation in the Damoguaihe Formation is caused by the destruction of the Nantun Formation trap integrity due to faulting. The threshold displacement for trap destruction differs in different formations.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Ling-Yun Xiong, You-Joong Kim, Won-Cheol Seo, Han-Kyu Lee, Woo-Chul Yang, Wan-Feng Xie
Summary: In this study, Co3O4/reduced graphene oxide (rGO) nanocomposite was successfully used as a modified electrochemical electrode for the detection of trace glucose. The Co3O4/rGO modified electrode exhibited high sensitivity, low detection limit, and fast response time, making it a promising candidate for practical electrochemical biosensors.
Article
Chemistry, Multidisciplinary
Xin-Yu Huang, Ya-Ru Kang, Shu Yan, Ahmed Elmarakbi, Yong-Qing Fu, Wan-Feng Xie
Summary: Metal-organic framework (MOF)-derived trimetallic FeCoNi oxides (FCN-MOS) with a mesoporous structure were synthesized through one-step hydrothermal reaction and calcination. The FCN-MOS system consists of three main phases, alpha-Fe2O3 (n-type), CoFe2O4, and NiFe2O4 (p-type), and the nanostructure and pore size can be controlled by altering the content of alpha-Fe2O3, CoFe2O4, and NiFe2O4. The sensors based on FCN-MOS exhibit a high response of 71.9, good selectivity towards 100 ppm ethanol at 250 degrees C, and long-term stability up to 60 days. Additionally, the FCN-MOS-based sensors show a p-n transition gas sensing behavior with the alteration of the Fe/Co/Ni ratio.
