Journal of University of Chinese Academy of Sciences >
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)
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
LIU Zilu , MA Jiahai . Aqueous reduction of Au3+ by natural organic matter under light-limited irradiation[J]. Journal of University of Chinese Academy of Sciences, 2016 , 33(6) : 748 -752 . DOI: 10.7523/j.issn.2095-6134.2016.06.005
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