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Your search keyword '"Zhu, Zhigao"' showing total 123 results
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123 results on '"Zhu, Zhigao"'

32. Shaping Phenolic Resin-Coated ZIF-67 to Millimeter-Scale Co/N Carbon Beads for Efficient Peroxymonosulfate Activation.

Author

Yan, Xin, Yao, Yiyuan, Xiao, Chengming, Zhang, Hao, Xie, Jia, Zhang, Shuai, Qi, Junwen, Zhu, Zhigao, Sun, Xiuyun, and Li, Jiansheng

Subjects
ELECTRON paramagnetic resonance, CATALYSTS recycling, RADICALS (Chemistry), PEROXYMONOSULFATE, TETRACYCLINE, POLYACRYLONITRILES
Abstract

Catalytic performance decline is a general issue when shaping fine powder into macroscale catalysts (e.g., beads, fiber, pellets). To address this challenge, a phenolic resin-assisted strategy was proposed to prepare porous Co/N carbon beads (ZACBs) at millimeter scale via the phase inversion method followed by confined pyrolysis. Specially, p-aminophenol–formaldehyde (AF) resin-coated zeolitic imidazolate framework (ZIF-67) nanoparticles were introduced to polyacrylonitrile (PAN) solution before pyrolysis. The thermosetting of the coated AF improved the interface compatibility between the ZIF-67 and PAN matrix, inhibiting the shrinkage of ZIF-67 particles, thus significantly improving the void structure of ZIF-67 and the dispersion of active species. The obtained ZACBs exhibited a 99.9% removal rate of tetracycline (TC) within 120 min, with a rate constant of 0.069 min−1 (2.3 times of ZIF-67/PAN carbon beads). The quenching experiments and electron paramagnetic resonance (EPR) tests showed that radicals dominated the reaction. This work provides new insight into the fabrication of high-performance MOF catalysts with outstanding recycling properties, which may promote the use of MOF powder in more practical applications. [ABSTRACT FROM AUTHOR]

Published
2024
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40. Recent Progress in Sludge-Derived Biochar and Its Role in Wastewater Purification.

Author

Zhou, Yujun, Gao, Jiamin, Yang, Xuran, Ni, Hao, Qi, Junwen, Zhu, Zhigao, Yang, Yue, Fang, Di, Zhou, Lixiang, and Li, Jiansheng

Abstract

As the by-product of wastewater treatment, a large amount of sludge is generated annually. Turning this waste into a resource is a feasible and sustainable strategy to reduce potential environmental risks and recover energy. As a way to realize the international goal of carbon dioxide emission peak and carbon neutrality, producing biochar from sludge has gained worldwide attention. This review evaluates recent progress in synthesis techniques for biochar of sludge origin. Different preparation techniques and their key affecting factors are compared and described. The obtained sludge-derived biochar could be employed for eliminating aqueous pollution or purifying wastewater, mainly through adsorption and catalytic reactions. The removal of various pollutants by sludge-derived biochar and its related mechanisms are discussed and summarized in detail. This review will be conducive for a comprehensive understanding of recent progress in sludge-derived biochar study and for guiding the purposeful production of biochar, as well as for developing wastewater purification technology based on sludge-derived biochar. [ABSTRACT FROM AUTHOR]

Published
2024
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49. Vehicle Operation Status Monitoring Based on Distributed Acoustic Sensor.

Author

Chen, Mengmeng, Ding, Haotian, Liu, Mingming, Zhu, Zhigao, Rui, Dongdong, Chen, Ye, and Xu, Fei

Subjects
DISTRIBUTED sensors, LONG-distance running, TRAFFIC flow, OPTICAL fiber detectors, OPTICAL fibers, COMPRESSORS
Abstract

To develop implementation research on distributed optical fiber sensing technology, field tests were conducted on municipal roads and railways using a distributed acoustic sensor (DAS). Data were collected by the DAS during a field test for a long time period (more than 20 min), and we conducted short-term (<10 s) and long-term (≥10 s) analyses on these data separately. In the short-term data analysis, the vehicle type, vehicle length, and working status of the vehicle engine or the compressor were identified. In the long-term data analysis, the traffic flow was monitored, and the running distance, acceleration, speed, and braking distance of the vehicle were obtained. The characteristics of the vehicle operation data obtained in these field tests are important in developing the data processing method of DASs, which will help to promote the implementation of DASs. [ABSTRACT FROM AUTHOR]

Published
2023
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