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440 results on '"Guo, Guangsheng"'

1. Comparative Analysis of Reinforcement Quantities for Reinforced Concrete Structures Under Crack Control

Author

Zhang, Fuzheng, Zhang, Yingying, Zhang, WenWen, Guo, Guangsheng, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Lu, Xinzheng, Series Editor, Kang, Thomas, editor, and Lee, Youngjin, editor

Published
2024
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17. Regulation Lattice Oxygen Mobility via Dual Single Atoms for Simultaneously Enhancing VOC Oxidation and NOxReduction

Author

Chu, Peiqi, Zhang, Long, Wang, Zhiwei, Wei, Lu, Liu, Yuxi, Dai, Hongxing, Guo, Guangsheng, Duan, Erhong, Zhao, Zhenxia, and Deng, Jiguang

Abstract

Synergistic catalytic removal of multipollutants (e.g., volatile organic compound (VOC) oxidation and nitrogen oxide (NOx) reduction) is highly demanded due to the increasingly strict emission standards. The prevention of the key reactive intermediate species nitrite excessive oxidation over the supported noble-metal catalysts, rather than the traditional low-efficiency transition metal oxide catalysts, remains a great challenge. Herein, a sound strategy of Pd single atoms saturated with acidic transition element ligands is proposed. The coexistence of Pd and V dual single atoms strengthens the adsorption of reactants, while synergistic interaction between dual atoms and surface oxygen weakens activation of lattice oxygen, thus significantly reducing the overoxidation of nitrite. Meanwhile, the neutralization of the active Pd and inert V sites results in a rational decrease in the redox property of Pd and an obvious increase in that of V. The Pd1V1/CeO2dual single-atom catalyst achieves 90% conversion of NOxand toluene at 238 and 230 °C and has a large temperature window (>150 °C) for NOxreduction. This research makes a breakthrough in the development of efficient supported noble-/transition-metal dual single-atom catalysts for VOC and NOxsimultaneous purification.

Published
2024
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18. Ultra‐Large Two‐Dimensional Metal Nanowire Networks by Microfluidic Laminar Flow Synthesis for Formic Acid Electrooxidation.

Author

Zhang, Dongtang, Bu, Jiahui, Dou, Xiangnan, Yan, Yong, Liu, Qiqi, Wang, Xiayan, Sun, Zaicheng, Guo, Guangsheng, Zheng, Kun, and Deng, Jiguang

Subjects
OXIDATION of formic acid, FORMIC acid, LAMINAR flow, MICROFLUIDICS, FOURIER transforms
Abstract

Despite the great research interest in two‐dimensional metal nanowire networks (2D MNWNs) due to their large specific surface area and abundance of unsaturated coordination atoms, their controllable synthesis still remains a significant challenge. Herein, a microfluidics laminar flow‐based approach is developed, enabling the facile preparation of large‐scale 2D structures with diverse alloy compositions, such as PtBi, AuBi, PdBi, PtPdBi, and PtAuCu alloys. Remarkably, these 2D MNWNs can reach sizes up to submillimeter scale (~220 μm), which is significantly larger than the evolution from the 1D or 3D counterparts that typically measure only tens of nanometers. The PdBi 2D MNWNs affords the highest specific activity for formic acid (2669.1 mA mg−1) among current unsupported catalysts, which is 103.5 times higher than Pt‐black, respectively. Furthermore, in situ Fourier transform infrared (FTIR) experiments provide comprehensive evidence that PdBi 2D MNWNs catalysts can effectively prevent CO* poisoning, resulting in exceptional activity and stability for the oxidation of formic acid. [ABSTRACT FROM AUTHOR]

Published
2024
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