Article
Chemistry, Analytical
Phan Hong Phuoc, Nguyen Ngoc Viet, Le Viet Thong, Chu Manh Hung, Nguyen Duc Hoa, Nguyen Van Duy, Hoang Si Hong, Nguyen Van Hieu
Summary: The study explored the gas-sensing performance of composite nanofibers with internal and external hetero-junctions of ZnO-SnO2, revealing enhanced response compared to mixed nanofibers. The gas-sensing mechanism of the hetero-nanojunctions was analyzed, attributing the remarkable gas sensing performance to the formation of internal heterojunctions.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Electrical & Electronic
Peresi Majura Bulemo
Summary: In this study, nanoscale ZnO-SnO2 belts were synthesized and applied as resistive-type sensing layers for hydrogen sensing. The ZnO-SnO2 belts exhibited high response, fast response speed, and distinguishable selectivity towards 5 ppm hydrogen at 400 degrees C in the presence of other gases. The sensor demonstrated stability and repeatability through 15 cycles of alternate air and hydrogen exposure. The unique sensing performance of the ZnO-SnO2 belts can be attributed to their belt morphology, surface pores, smaller crystal size, ZnO/SnO2 heterojunction, and ZnO metallization following hydrogen exposure.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Shiyu Zhou, Jiapeng Ji, Tong Qiu, Liguang Wang, Wenbin Ni, Sheng Li, Wenjun Yan, Min Ling, Chengdu Liang
Summary: The study designed a composite material based on ZIF-8 derived ZnO, functionalized with rGO to enhance the selectivity of H-2 sensing, achieving significant results.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Materials Science, Textiles
Abbas Mobasheri, Saeed Parhoodeh, Gholamabbas Shams
Summary: In this study, SnO2 nanofibers and their modifications (Cd doping and making a composite with reduced graphene oxide) were synthesized via electrospinning and used for CO gas sensing. The enhanced sensing properties of Cd-doped SnO2-RGO nanofibrous mat, compared to other counterparts, can be attributed to the p-type behavior of RGO inside the nanofibers, catalytic activity, and the addition of new oxidation sites for cadmium elements, providing flexible and optimal gas sensing.
FIBERS AND POLYMERS
(2022)
Article
Biochemistry & Molecular Biology
Jiahui Guo, Weiwei Li, Xuanliang Zhao, Haowen Hu, Min Wang, Yi Luo, Dan Xie, Yingjiu Zhang, Hongwei Zhu
Summary: In this study, SnO2/ZnO nanocomposites were successfully synthesized and their gas sensing properties were investigated at room temperature, showing high sensitivity and selectivity to 0.5 ppm NO2 gas. Additionally, a flexible wearable sensor array integrated with patterned silver electrodes and SnO2/ZnO was fabricated, capable of detecting 0.1 ppm NO2 gas after 10,000 bending cycles, demonstrating a general approach for the fabrication of flexible devices for gas detection applications.
Article
Chemistry, Multidisciplinary
Yumeng Wang, Xinchang Wang, Beiying Qi, Jipeng Cheng, Xinyue Wang, Yuanyuan Shang, Jianfeng Jia
Summary: SnO2/ZnO@ZIF-8 core-shell nanofibers were successfully synthesized using electrospinning and hydrothermal etching. The ZIF-8 coating significantly increased the specific surface area of the nanofibers. These core-shell nanostructures showed improved H2S sensing properties and reduced interference from ambient humidity, with good selectivity and stability.
Article
Chemistry, Analytical
Sonalika Agarwal, Sanjay Kumar, Himanshu Agrawal, Mohamad G. Moinuddin, Manoj Kumar, Satinder K. Sharma, Kamlendra Awasthi
Summary: The design of hierarchical zinc oxide (ZnO) microstructures modified with silver (Ag) nanoparticles has been proven effective in enhancing hydrogen gas sensing performance. The Ag/ZnO hollow microstructures showed superior sensitivity, fast response and recovery time, as well as good stability, even at low hydrogen gas concentrations. This enhancement in sensing performance is attributed to the chemical and electronic sensitization effect of Ag nanoparticles, leading to a more sensitive sensor with improved selectivity.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Seyeon Park, Peresi Majura Bulemo, Won-Tae Koo, Jaehyun Ko, Il-Doo Kim
Summary: By utilizing solid-solution doping and catalytic metal nanoparticles, superior acetylene sensing capabilities were achieved through porous metal oxide nanofibers. The high porosity of the metal oxide nanofibers, prepared using electrospinning and sacrificial templating, was essential for high gas permeability and active sites. Ga-doped ZnO porous NFs functionalized with Pt catalysts demonstrated the highest C2H2 sensing responses with exceptional selectivity and stability against interfering gases.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Surajit Das, Sumit Kumar, Jitendra Singh, Mahesh Kumar
Summary: The research introduces a synthesis technique to obtain ZnO nanoparticles via laser ablation method and fabricates an n-type ZnO/n-type SnO2 heterojunction sensor, showing excellent sensing performance that can detect as low as 0.25 ppm HCHO.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Kelin Hu, Feipeng Wang, Zijia Shen, Hongcheng Liu, Jianglin Xiong
Summary: Pd/ZnO-SnO2 hollow nanofibers prepared by electrospinning and magnetron sputtering exhibited excellent hydrogen sensing behavior, with a response reaching 171 at 270 degrees C. The enhanced sensing performance was attributed to the ternary heterojunctions formed in the hollow nanofibers. Various characterization techniques were used to study the materials and further explain the morphology formation process.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Polymer Science
Alberto Rubin Pedrazzo, Claudio Cecone, Sara Morandi, Maela Manzoli, Pierangiola Bracco, Marco Zanetti
Summary: The study investigated the effect of different templating polymers (PVP, PEO, and PVAc) on the morphologies and particle size distributions of SnO2, showing that the final oxide's morphology and crystallite size can be altered by using different polymers.
Article
Chemistry, Physical
Yale Wang, Haihui Pu, Ganhua Lu, Xiaoyu Sui, Junhong Chen
Summary: Hydrogen detection devices using Au-SnO2/rGO nanohybrids showed notable sensitivity, even at concentrations as low as 0.04% hydrogen. The acceleration effect of gold dopants resulted in faster response and recovery during hydrogen sensing, as revealed by activation energy analysis. Integration of the sensor chip with a portable digital meter demonstrated a hydrogen detection handheld device for direct readout of test results.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Ziqiao Jiang, Ce Wang, Zhenglong Yang, Li Zhang, Juan Jin, Xiaoling Guo, Linlin Zhong, Zhenglong Duan, Haifeng Li
Summary: The Eu2O3/Au/SnO2 ternary nanofibers prepared via a synergetic approach exhibit a remarkable response to acetone detection at a low operating temperature, with fast response recovery kinetics and selective detection capabilities. This enhancement in sensing properties is attributed to the construction of heterostructures and chemical sensitization, providing a potential pathway for developing efficient acetone sensors for health security.
Article
Chemistry, Analytical
Ming Yin, Li Zhang, Tianyi Qiu, Yan Chen, Shuyan Qi, Xiuxia Wei, Xinxin Tian, Kangjie Ge, Jingxuan Qiu, Dongpo Xu
Summary: The ZnO@SnO2 sensor, synthesized by hydrothermal synthesis, forms an n-n-type heterostructure and shows a high response to TEA, with excellent selectivity and cycling stability.
Article
Materials Science, Multidisciplinary
Ziqiao Jiang, Ce Wang, Zhenglong Yang, Juan Jin
Summary: A new proposal for developing a highly sensitive 3H-2B gas sensor for real-time monitoring of Listeria monocytogenes (LM) in food is presented. The sensor, based on p-Cr2O3/n-SnO2 binary heterojunction nanofibers, shows excellent 3H-2B sensing performance with high selectivity and stability.
Article
Nanoscience & Nanotechnology
Zain Ul Abideen, Jae Young Park, Hyoun Woo Kim, Sang Sub Kim
Article
Nanoscience & Nanotechnology
Jae Young Park, Ho-hyoung Kim, Dolly Rana, Deepika Jamwal, Akash Katoch
Article
Chemistry, Analytical
Zain Ul Abideen, Jae-Hun Kim, Sang Sub Kim
SENSORS AND ACTUATORS B-CHEMICAL
(2017)
Article
Materials Science, Multidisciplinary
Monu Verma, Vinod Kumar, Akash Katoch
MATERIALS CHEMISTRY AND PHYSICS
(2018)
Article
Engineering, Electrical & Electronic
Monu Verma, Vinod Kumar, Akash Katoch
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2018)
Article
Chemistry, Analytical
Zain Ul Abideen, Jae-Hun Kim, Ali Mirzaei, Hyoun Woo Kim, Sang Sub Kim
SENSORS AND ACTUATORS B-CHEMICAL
(2018)
Article
Optics
Chirag Malik, Akash Katoch, Birendra Singh, Anant Pandey
JOURNAL OF LUMINESCENCE
(2019)
Article
Engineering, Electrical & Electronic
Deepika Jamwal, Dolly Rana, Ashish Soni, Meenakshi Dudi, Ahmad Umar, Pranjala Tiwari, Akash Katoch, Surinder Kumar Mehta
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2019)
Article
Chemistry, Multidisciplinary
Dolly Rana, Deepika Jamwal, Sang Sub Kim, Akash Katoch, Pankaj Thakur, Jae Young Park
Article
Nanoscience & Nanotechnology
Zain Ul Abideen, Jun-Gyu Choi, Jodie A. A. Yuwono, Alexander Kiy, Priyank Vijaya Kumar, Krishnan Murugappan, Won-June Lee, Patrick Kluth, David R. R. Nisbet, Thanh Tran-Phu, Myung-Han Yoon, Antonio Tricoli
Summary: A strategy to enhance the performance of semiconductor sensors by engineering tunable oxygen vacancies in thick metal oxide nanoparticles networks is proposed. This approach achieves high selectivity and sensitivity by optimizing the electronic structure and surface activity while maintaining a 3D morphology. The introduction of oxygen vacancies results in significant improvement in the sensitivity, response time, and recovery time of ZnO sensors for detecting ethanol at room temperature. The presence of oxygen vacancies also enables a low limit of detection at an operating temperature of 150°C. This scalable approach has the potential for developing wearable chemical and bio-sensors and tuning the activity and band structure of oxide films for various applications.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Minsu Lee, Hohyeong Kim, Hyungsub Kim, Akash Katoch, Jae Young Park
Summary: This study investigated the effect of the mixing ratio of TiO2 nanoparticles (P25) and titanium alkoxide (T-sol) on various properties of TiO2 films. The specific surface area, microstructure, thickness, transmittance, pencil hardness, and oil contact angle of the films were analyzed. The results showed that the specific surface area increased as the P25 content increased, but this effect decreased as the ratio of T-sol to P25 increased. The thickness, surface roughness, transmittance, pencil hardness, and oil contact angle of the films were also affected by the P25 content, with increased thickness and surface roughness, decreased transmittance and pencil hardness, and decreased oil contact angle.
Article
Nanoscience & Nanotechnology
Zain Ul Abideen, Jun-Gyu Choi, Jodie A. Yuwono, Won-June Lee, Krishnan Murugappan, Priyank Vijaya Kumar, David R. Nisbet, Thanh Tran-Phu, Myung-Han Yoon, Antonio Tricoli
Summary: Nanoscale heterojunction networks are promising functional materials for optoelectronic and photocatalytic devices. Optimizing their surface properties, especially surface defects, is a major challenge. This study reports on the effective engineering of the photocatalytic properties of nanoscale heterojunction networks through deep ultraviolet photoactivation.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Dolly Rana, Ashish Soni, Anita Sharma, Akash Katoch, Deepika Jamwal
NANO HYBRIDS AND COMPOSITES
(2018)
Proceedings Paper
Physics, Condensed Matter
Chirag Malik, A. Pandey, Akash Katoch, S. P. Lochab, Birendra Singh
61ST DAE-SOLID STATE PHYSICS SYMPOSIUM
(2017)
Review
Materials Science, Ceramics
Zain Ul Abideen, Jae-Hun Kim, Jae-Hyoung Lee, Jin-Young Kim, Ali Mirzaei, Hyoun Woo Kim, Sang Sub Kim
JOURNAL OF THE KOREAN CERAMIC SOCIETY
(2017)
