Effect of polyethylene glycol on corrosion of fresh macroporous silicon in 1.0 M NaOH and application in determination of porosity and thickness by gravimetric measurement |
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| Authors: | Chuan Lai Xiaogang Guo Mingfeng Wang Jiajun He Zhuli Wang Bin Xie |
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| Affiliation: | 1. Eastern Sichuan Sub-center of National Engineering Research Center for Municipal Wastewater Treatment and Reuse, Key Laboratory of Exploitation and Study of Distinctive Plants in Education Department of Sichuan Province, Sichuan University of Arts and Science, Dazhou, China;2. DaZhou Quality Technical Supervision and Inspection Testing Center, Dazhou, China;3. lc860801@163.com;5. College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing, China;6. DaZhou Quality Technical Supervision and Inspection Testing Center, Dazhou, China;7. Eastern Sichuan Sub-center of National Engineering Research Center for Municipal Wastewater Treatment and Reuse, Key Laboratory of Exploitation and Study of Distinctive Plants in Education Department of Sichuan Province, Sichuan University of Arts and Science, Dazhou, China;8. School of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong, China |
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| Abstract: | AbstractThis work presents on improvement in gravimetric measurement for determining the porosity and thickness of microporous silicon. Herein, the corrosion of fresh macroporous silicon (f-MPSi) in 1.0?M NaOH with different concentrations of polyethylene glycol (PEG 200/400/600) was studied by weight loss measurement and scanning electron microscopy (SEM). The results showed that the corrosion rate decreased with increasing polyethylene glycol concentration, and increased with an increase in temperature. Polyethylene glycol can inhibit the corrosion of f-MPSi in NaOH solution. Moreover, 1.0?M NaOH/PEG 600 (10%) can be used as the optimized solution to remove f-MPSi for measuring its porosity and thickness by gravimetric measurement. |
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| Keywords: | Porous silicon corrosion porosity anodization |
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