Nanozyme catalysis-powered portable mini-drainage device enables real-time and universal weighing analysis of silver ions and silver nanoparticles

Xiaoming Ma; Zhen Wang; Xuan Hu; Jinghua Chen; Huifang Zhang; Xun Li; Fengyan Xie; Jianguo Xu

doi:10.1016/j.jhazmat.2021.125689

Nanozyme catalysis-powered portable mini-drainage device enables real-time and universal weighing analysis of silver ions and silver nanoparticles

J Hazard Mater. 2021 Aug 5:415:125689. doi: 10.1016/j.jhazmat.2021.125689. Epub 2021 Mar 19.

Authors

Xiaoming Ma¹, Zhen Wang², Xuan Hu², Jinghua Chen², Huifang Zhang², Xun Li², Fengyan Xie³, Jianguo Xu⁴

Affiliations

¹ School of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, PR China; State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, PR China.
² School of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, PR China.
³ Fujian Key Laboratory of Functional Marine Sensing Materials, Minjiang University, Fuzhou 350108, PR China.
⁴ School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, PR China; State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, PR China; Fujian Key Laboratory of Functional Marine Sensing Materials, Minjiang University, Fuzhou 350108, PR China. Electronic address: jgxu-sfse@hfut.edu.cn.

PMID: 33773247
DOI: 10.1016/j.jhazmat.2021.125689

Abstract

We introduce a real-time quantitative analytical method for universal silver ions (Ag(I)) and silver nanoparticles (AgNPs) analysis based on a portable nanozyme catalysis-powered portable mini-drainage device. The device is composed of three main glass containers with different specifications. The catalase mimic of ascorbic acid-coated platinum nanoparticles (AA-PtNPs) was used to provide the pumping power to drain water by catalyzing a gas-generation reaction, and the inhibition effect of Ag(I) on the catalytic activity of AA-PtNPs is adopted to connect the target detection event with the mini-drainage device. Experimental results reveal that the mass of the overflowed water is inversely proportional to the concentration of Ag(I) and AgNPs so that their quantitation can be accomplished via real-time weighing of the overflowed water. The importance is that without requiring advanced instruments, this device can quantify Ag(I) and AgNPs with a limit of detection (LOD) of 2.0 nM for Ag(I), and 3.8 pM for AgNPs within 30 min, respectively. The reliability and accuracy are comparable with the inductively coupled plasma optical emission spectrometer (ICP-OES). All these appealing features provide us a remarkable insight into the design of versatile portable devices with potential applications in in-situ environmental monitoring under remote areas and resource-limited settings.

Keywords: Drainage device; Nanozyme; Real-time analysis; Silver ions; Silver nanoparticles.

Publication types

Research Support, Non-U.S. Gov't