DataVXACS Applied Materials & InterfacesPaper
journal article·2020-03-11

Portable Hg2+ Nanosensor with ppt Level Sensitivity Using Nanozyme as the Recognition Unit, Enrichment Carrier, and Signal Amplifier

Yumeng Fang, Yue Zhang, Leigang Cao, Jianzheng Yang, Minghua Hu, Zili Pang, Junhui He

ACS Applied Materials & Interfaces· Volume 12· Issue 10
Publisher page
Source abstract

Abstract

We report a portable and highly sensitive Hg2+ nanosensor, where the CuS nanozyme functions as an Hg2+ recognition unit, a Hg2+ enrichment/preconcentration carrier, and a signal amplifier/output unit. The as-designed enrichment-detection integration strategy is customizable and endows the sensor with both a wide detection range from 50 ppt to 400 ppb and a high sensitivity with a minimum detectable Hg2+ concentration of 50 ppt. In order to make the Hg2+ nanosensor portable and cost-effective, a commercial RGB sensor is employed here in conjunction with the Hg2+-dependent colorimetric reaction. More importantly, the as-developed Hg2+ nanosensor is feasible for analysis of real samples with satisfactory accuracy (deviation <10%) and reproducibility (recovery ∼82%). Thus, this portable Hg2+ nanosensor appears to be a viable solution to meet the actual needs of on-site and real-time mercury contamination analysis and may also pave the way to colorimetric nanosensors for other metal ions.
Source: europepmc · Quality: candidate unverified · Source record ↗

Research context

Nanomaterials

OpenAlex topics: Advanced Nanomaterials in Catalysis · Advanced biosensing and bioanalysis techniques · Electrochemical sensors and biosensors

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Functional Nanomaterials Laboratory, Centre for Micro/Nanomaterials and Technology and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Zhongguancundonglu 29, Haidianqu, Beijing 100190, China

School of Mechanical and Materials Engineering, North China University of Technology, Beijing 100144, China

University of Chinese Academy of Sciences, Beijing 100864, China

Funding

Ministry of Science and Technology of the People's Republic of China · Natural Science Foundation of Beijing Municipality · National Natural Science Foundation of China · Key Laboratory of Photochemical Conversion and Optoelectronic Materials · Beijing Practical Training Plan

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