Fabrication of superwetting and antimicrobial wood-based mesoporous composite decorated with silver nanoparticles for purifying the polluted-water with oils, dyes and bacteria

污染物 流出物 制浆造纸工业 罗丹明B 废水 复合数 光催化 吸附 饮用水净化 化学 亚甲蓝 材料科学 催化作用 有机化学 环境科学 环境工程 复合材料 工程类
作者
Xiling Du,Lei Shi,Jiuyin Pang,Huiwen Zheng,Junyou Shi,Ming Zhang
出处
期刊:Journal of environmental chemical engineering [Elsevier]
卷期号:10 (2): 107152-107152 被引量:25
标识
DOI:10.1016/j.jece.2022.107152
摘要

Nowadays, organic pollutants (oils, aromatic compounds and dyes) released from the chemical industry are the main water pollutants, which greatly impact on the environment. To fix the defects of conventional materials such as single pollutant type, complicated process, low efficiency, high cost and difficult maintenance, etc., we present a novel, efficient, low-cost and green [email protected] composite for simultaneously purifying the wastewater containing multiple pollutants. Specifically, Ag+ was reduced to Ag NP and successfully anchored onto Balsa wood. [email protected] product with best performance was obtained by using 0.05 mol L−1 AgNO3 to treat the wood (7 mm). As a filter, its degradation efficiency towards methylene blue (MB) reached up to 94.4%, displaying the excellent catalytic performance. Under simulated sunlight, its removal efficiency towards rhodamine B (RhB) was more than 81.3% when the [email protected] served as the dye adsorbent with photocatalysis. In addition, [email protected] has the excellent superhydrophilicity and underwater superoleophobicity (OCA = 153°), thus owns the remarkable separation efficiency for oil-in-water emulsions (even with high salinity and different pH). Notably, inactivation rates of E. coli, S. aureus and B. subtilis after [email protected] treatment reached up to 99.97%, 99.98% and 99.98%, which would bring us great environmental and economic benefits in its future practical application.
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