文献类型：期刊文献

英文题名：Synthesis of activated carbon loaded nanosilver and study of water corrosion resistance and antimicrobial properties

作者：Xiao, Xiaoju[1];Cheng, Ying[1];Liang, Xiaoyi[1];Yang, Zhen[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：52

外文期刊名：SURFACES AND INTERFACES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001294962600001)】；

基金：Acknowledgements This work is partly supported by the National Nature Science Foundation of China (No:21978097) . The authors would like to thank the anonymous reviewers for their constructive suggestions that have improved the quality of this work.

语种：英文

外文关键词：Activated carbon; Nanosilver; Water corrosion resistance; Antimicrobial

摘要：Hypothesis: This study evaluates the efficacy of silver-loaded activated carbon in reducing microbial growth in water treatment systems, particularly addressing the risk of E. coli proliferation turning activated carbon into a secondary source of contamination. Experiments: Silver-loaded activated carbon was synthesized via an impregnation-calcination method. We systematically examined how variations in silver nitrate concentration, calcination temperature, and duration influence the structural integrity and nanosilver particle distribution of the activated carbon, with a focus on enhancing water corrosion resistance and antimicrobial properties. Findings: Characterization revealed a uniform distribution of 5-60 nm nanosilver particles on activated carbon. Increases in silver nitrate concentration, calcination duration, and calcination temperature led to a reduction in both surface area and pore volume of the carbon. The optimal conditions for maximizing water corrosion resistance were established as 0.01 mol/L silver nitrate, 60 min of calcination at 800 degrees C, and a silver loading of 0.28 wt%, which resulted in a minimal silver loss of 4.8 %. Under these conditions, the silver-loaded activated carbon demonstrated a 90 % reduction in microbial growth, measured after 480 min, starting from an initial microbial load of 106 CFU/mL.