收稿日期: 2016-03-08
网络出版日期: 2016-11-15
基金资助
Supported by the National Natural Science Foundation of China(21377126,41573115)
Aqueous reduction of Au3+ by natural organic matter under light-limited irradiation
Received date: 2016-03-08
Online published: 2016-11-15
Supported by
Supported by the National Natural Science Foundation of China(21377126,41573115)
刘子露 , 马家海 . 水体中天然有机质在有限光照下还原三价金[J]. 中国科学院大学学报, 2016 , 33(6) : 748 -752 . DOI: 10.7523/j.issn.2095-6134.2016.06.005
In this study, we find that one standard natural organic matter (NOM) called Suwannee River humic acid (SRHA) reduces Au3+ to Au nanoparticles under short-time simulated sunlight irradiation or in full-course darkness. The results suggest that the reduction of metal ions by the active NOM occurs widely, even in special aquatic environments that lack sunlight exposure, such as underground and cavern water. Moreover, analogous experiments covering other two kinds of NOMs, Pony Lake fulvic acid (PLFA) and Aldrich humic acid (AHA), demonstrate that NOMs behave differently in reduction of Au3+ with limited irradiation.
Key words： natural organic matter; Au3+; Au nanoparticle
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