The Experts below are selected from a list of 33813 Experts worldwide ranked by ideXlab platform
Zhenhui Kang - One of the best experts on this subject based on the ideXlab platform.
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ZnO/carbon quantum dots nanocomposites: one-step fabrication and superior photocatalytic ability for Toxic Gas degradation under visible light at room temperature
New Journal of Chemistry, 2012Co-Authors: Hang Yu, Hengchao Zhang, Hui Huang, Haitao Li, Hai Ming, Zhenhui KangAbstract:ZnO/carbon quantum dots (ZnO/CQDs) nanocomposites were prepared by a one-step hydrothermal reaction and used as superior photocatalysts for the degradation of Toxic Gas (benzene and methanol) under visible light at room temperature. The as-prepared ZnO/CQDs nanocomposites were characterized by X-ray powder diffraction, Raman spectra, Fourier transform infrared spectroscopy, UV-Vis absorption spectroscopy, scanning and transmission electron microscopy. The results show that these nanocomposites exhibit higher photocatalytic activity (degradation efficiency over 80%, 24 h) compared to N doped TiO2 and pure ZnO nanoparticles under visible light irradiation. In the present catalyst system, the crucial roles of CQDs in the enhancement of photocatalytic activity of the ZnO/CQDs nanocomposites are illustrated.
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zno carbon quantum dots nanocomposites one step fabrication and superior photocatalytic ability for Toxic Gas degradation under visible light at room temperature
New Journal of Chemistry, 2012Co-Authors: Hengchao Zhang, Hui Huang, Hai Ming, Yang Liu, Zhenhui KangAbstract:ZnO/carbon quantum dots (ZnO/CQDs) nanocomposites were prepared by a one-step hydrothermal reaction and used as superior photocatalysts for the degradation of Toxic Gas (benzene and methanol) under visible light at room temperature. The as-prepared ZnO/CQDs nanocomposites were characterized by X-ray powder diffraction, Raman spectra, Fourier transform infrared spectroscopy, UV-Vis absorption spectroscopy, scanning and transmission electron microscopy. The results show that these nanocomposites exhibit higher photocatalytic activity (degradation efficiency over 80%, 24 h) compared to N doped TiO2 and pure ZnO nanoparticles under visible light irradiation. In the present catalyst system, the crucial roles of CQDs in the enhancement of photocatalytic activity of the ZnO/CQDs nanocomposites are illustrated.
Hengchao Zhang - One of the best experts on this subject based on the ideXlab platform.
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ZnO/carbon quantum dots nanocomposites: one-step fabrication and superior photocatalytic ability for Toxic Gas degradation under visible light at room temperature
New Journal of Chemistry, 2012Co-Authors: Hang Yu, Hengchao Zhang, Hui Huang, Haitao Li, Hai Ming, Zhenhui KangAbstract:ZnO/carbon quantum dots (ZnO/CQDs) nanocomposites were prepared by a one-step hydrothermal reaction and used as superior photocatalysts for the degradation of Toxic Gas (benzene and methanol) under visible light at room temperature. The as-prepared ZnO/CQDs nanocomposites were characterized by X-ray powder diffraction, Raman spectra, Fourier transform infrared spectroscopy, UV-Vis absorption spectroscopy, scanning and transmission electron microscopy. The results show that these nanocomposites exhibit higher photocatalytic activity (degradation efficiency over 80%, 24 h) compared to N doped TiO2 and pure ZnO nanoparticles under visible light irradiation. In the present catalyst system, the crucial roles of CQDs in the enhancement of photocatalytic activity of the ZnO/CQDs nanocomposites are illustrated.
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zno carbon quantum dots nanocomposites one step fabrication and superior photocatalytic ability for Toxic Gas degradation under visible light at room temperature
New Journal of Chemistry, 2012Co-Authors: Hengchao Zhang, Hui Huang, Hai Ming, Yang Liu, Zhenhui KangAbstract:ZnO/carbon quantum dots (ZnO/CQDs) nanocomposites were prepared by a one-step hydrothermal reaction and used as superior photocatalysts for the degradation of Toxic Gas (benzene and methanol) under visible light at room temperature. The as-prepared ZnO/CQDs nanocomposites were characterized by X-ray powder diffraction, Raman spectra, Fourier transform infrared spectroscopy, UV-Vis absorption spectroscopy, scanning and transmission electron microscopy. The results show that these nanocomposites exhibit higher photocatalytic activity (degradation efficiency over 80%, 24 h) compared to N doped TiO2 and pure ZnO nanoparticles under visible light irradiation. In the present catalyst system, the crucial roles of CQDs in the enhancement of photocatalytic activity of the ZnO/CQDs nanocomposites are illustrated.
Hui Huang - One of the best experts on this subject based on the ideXlab platform.
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ZnO/carbon quantum dots nanocomposites: one-step fabrication and superior photocatalytic ability for Toxic Gas degradation under visible light at room temperature
New Journal of Chemistry, 2012Co-Authors: Hang Yu, Hengchao Zhang, Hui Huang, Haitao Li, Hai Ming, Zhenhui KangAbstract:ZnO/carbon quantum dots (ZnO/CQDs) nanocomposites were prepared by a one-step hydrothermal reaction and used as superior photocatalysts for the degradation of Toxic Gas (benzene and methanol) under visible light at room temperature. The as-prepared ZnO/CQDs nanocomposites were characterized by X-ray powder diffraction, Raman spectra, Fourier transform infrared spectroscopy, UV-Vis absorption spectroscopy, scanning and transmission electron microscopy. The results show that these nanocomposites exhibit higher photocatalytic activity (degradation efficiency over 80%, 24 h) compared to N doped TiO2 and pure ZnO nanoparticles under visible light irradiation. In the present catalyst system, the crucial roles of CQDs in the enhancement of photocatalytic activity of the ZnO/CQDs nanocomposites are illustrated.
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zno carbon quantum dots nanocomposites one step fabrication and superior photocatalytic ability for Toxic Gas degradation under visible light at room temperature
New Journal of Chemistry, 2012Co-Authors: Hengchao Zhang, Hui Huang, Hai Ming, Yang Liu, Zhenhui KangAbstract:ZnO/carbon quantum dots (ZnO/CQDs) nanocomposites were prepared by a one-step hydrothermal reaction and used as superior photocatalysts for the degradation of Toxic Gas (benzene and methanol) under visible light at room temperature. The as-prepared ZnO/CQDs nanocomposites were characterized by X-ray powder diffraction, Raman spectra, Fourier transform infrared spectroscopy, UV-Vis absorption spectroscopy, scanning and transmission electron microscopy. The results show that these nanocomposites exhibit higher photocatalytic activity (degradation efficiency over 80%, 24 h) compared to N doped TiO2 and pure ZnO nanoparticles under visible light irradiation. In the present catalyst system, the crucial roles of CQDs in the enhancement of photocatalytic activity of the ZnO/CQDs nanocomposites are illustrated.
Hai Ming - One of the best experts on this subject based on the ideXlab platform.
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ZnO/carbon quantum dots nanocomposites: one-step fabrication and superior photocatalytic ability for Toxic Gas degradation under visible light at room temperature
New Journal of Chemistry, 2012Co-Authors: Hang Yu, Hengchao Zhang, Hui Huang, Haitao Li, Hai Ming, Zhenhui KangAbstract:ZnO/carbon quantum dots (ZnO/CQDs) nanocomposites were prepared by a one-step hydrothermal reaction and used as superior photocatalysts for the degradation of Toxic Gas (benzene and methanol) under visible light at room temperature. The as-prepared ZnO/CQDs nanocomposites were characterized by X-ray powder diffraction, Raman spectra, Fourier transform infrared spectroscopy, UV-Vis absorption spectroscopy, scanning and transmission electron microscopy. The results show that these nanocomposites exhibit higher photocatalytic activity (degradation efficiency over 80%, 24 h) compared to N doped TiO2 and pure ZnO nanoparticles under visible light irradiation. In the present catalyst system, the crucial roles of CQDs in the enhancement of photocatalytic activity of the ZnO/CQDs nanocomposites are illustrated.
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zno carbon quantum dots nanocomposites one step fabrication and superior photocatalytic ability for Toxic Gas degradation under visible light at room temperature
New Journal of Chemistry, 2012Co-Authors: Hengchao Zhang, Hui Huang, Hai Ming, Yang Liu, Zhenhui KangAbstract:ZnO/carbon quantum dots (ZnO/CQDs) nanocomposites were prepared by a one-step hydrothermal reaction and used as superior photocatalysts for the degradation of Toxic Gas (benzene and methanol) under visible light at room temperature. The as-prepared ZnO/CQDs nanocomposites were characterized by X-ray powder diffraction, Raman spectra, Fourier transform infrared spectroscopy, UV-Vis absorption spectroscopy, scanning and transmission electron microscopy. The results show that these nanocomposites exhibit higher photocatalytic activity (degradation efficiency over 80%, 24 h) compared to N doped TiO2 and pure ZnO nanoparticles under visible light irradiation. In the present catalyst system, the crucial roles of CQDs in the enhancement of photocatalytic activity of the ZnO/CQDs nanocomposites are illustrated.
Mithun Mukherjee - One of the best experts on this subject based on the ideXlab platform.
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Sleep Scheduling in Industrial Wireless Sensor Networks for Toxic Gas Monitoring
IEEE Wireless Communications, 2017Co-Authors: Mithun Mukherjee, Lei Shu, Gerhard P. Hancke, Chunsheng ZhuAbstract:Toxic Gas leakage that leads to equipment damage, environmental effects, and injuries to humans is the key concern in large-scale industries, particularly in petrochemical plants. Industrial wireless sensor networks (IWSNs) are specially designed for industrial applications with improved efficiency, and remote sensing for Toxic Gas leakage. Sleep scheduling is a common approach in IWSNs to overcome the network lifetime problem due to energy constrained nodes. In this article, we propose a sleep scheduling scheme that ensures a coverage degree requirement based on the dangerous levels of the Toxic Gas leakage area, while maintaining global network connectivity with minimal awake nodes. Unlike the previous sleep scheduling algorithm, for example, the connected k-neighborhood (CKN)-based approach that wakes up the sleep nodes over the entire sensing field by increasing the k-value, our proposed scheme dynamically wakes up the sleep nodes only in the particular Toxic Gas leakage area. Simulation results show that our proposed scheme outperforms the CKN-based sleep scheduling scheme with the same required coverage degree for the Toxic Gas leakage area. In addition, the proposed scheme considers multiple hazardous zones with various coverage degree requirements. We show that at the expense of a slight extra message overhead, energy consumption in terms of totally awake nodes over the entire sensing field is reduced compared to the other approaches, while maintaining network connectivity.
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DeGas: Toxic Gas boundary area detection in industrial wireless sensor networks: poster abstract
2016Co-Authors: Lei Shu, Mithun Mukherjee, Yuanfang ChenAbstract:In this article, we propose a new scheme DeGas to determine the boundary area of the Toxic Gas with planarization algorithm. This detected boundary area will ensure safe area around the Toxic Gas and will provide a decision reference for evacuation and rescue of the first-line workers in the large-scale petrochemical plants. Understanding the implications of these observations enable to find out an optimal tradeoff between the cost of a number of deployed sensor nodes and the accuracy of the estimated Toxic Gas boundary area size.
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Toxic Gas boundary area detection in large-scale petrochemical plants with industrial wireless sensor networks
IEEE Communications Magazine, 2016Co-Authors: Mithun Mukherjee, Xiaoling WuAbstract:Industrial WSNs are evolving to become the key interconnection between management and factory products in large-scale petrochemical plants. Apart from improved manufacturing, asset tracking, and robotic applications, Toxic Gas detection is one of the major issues in petrochemical plants, since Toxic Gas leakage can severely threaten the safety of first-line working staff. Continuous object detection, one of the major applications in WSNs, has become an important research topic in large-scale industry. This article overviews continuous object detection techniques that have emerged in recent years. Most of the research focuses on the estimation of the Toxic Gas boundary. However, an accurate boundary is less likely to be detected due to the nature (e.g., invisibility, fast movement, and changing shape) of Toxic Gas. Thus, it is essential to ensure the boundary area rather than only the boundary of the Toxic Gas. We propose a novel boundary area detection technique with planarization algorithms like RNG and GG. Exhaustive simulation studies enable us to find an optimal trade-off point between the cost of a number of deployed sensor nodes and the accuracy of the estimated Toxic Gas boundary area size.
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IPSN - Poster Abstract: DeGas - Toxic Gas Boundary Area Detection in Industrial Wireless Sensor Networks
2016 15th ACM IEEE International Conference on Information Processing in Sensor Networks (IPSN), 2016Co-Authors: Lei Shu, Mithun Mukherjee, Yuanfang ChenAbstract:In this article, we propose a new scheme DeGas to determine the boundary area of the Toxic Gas with planarization algorithm. This detected boundary area will ensure safe area around the Toxic Gas and will provide a decision reference for evacuation and rescue of the first-line workers in the large-scale petrochemical plants. Understanding the implications of these observations enable to find out an optimal trade-off between the cost of a number of deployed sensor nodes and the accuracy of the estimated Toxic Gas boundary area size.
