Title |
Detect, Remove and Reuse: A New Paradigm in Sensing and Removal of Hg (II) from Wastewater via SERS-Active ZnO/Ag Nanoarrays
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Published in |
Environmental Science & Technology, December 2014
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DOI | 10.1021/es503527e |
Pubmed ID | |
Authors |
Ahmad Esmaielzadeh Kandjani, Ylias M. Sabri, Mahsa Mohammad-Taheri, Vipul Bansal, Suresh K. Bhargava |
Abstract |
Mercury being one of the most toxic heavy metals has long been a focus of concern due to its gravest threats to human health and environment. Although multiple methods have been developed to detect and/or remove dissolved mercury, many require complicated procedures and sophisticated equipment. Here, we describe a simple surface enhanced Raman spectroscopy (SERS) active ZnO/Ag nanoarrays that can detect Hg(2+), remove Hg(2+) and can be fully regenerated, not just from Hg(2+) contamination when heat-treated but also from the SERS marker when exposed to UV as a result of the self-cleaning ability of this schottky junction photocatalyst. The sensors are also highly selective because of the unique way mercury (among other chemi cals) interacts with Ag nanoparticles, thus reducing its SERS activity. |
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Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 1 | 1% |
Argentina | 1 | 1% |
Saudi Arabia | 1 | 1% |
Unknown | 80 | 96% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 27 | 33% |
Student > Doctoral Student | 9 | 11% |
Researcher | 8 | 10% |
Student > Master | 8 | 10% |
Professor | 3 | 4% |
Other | 7 | 8% |
Unknown | 21 | 25% |
Readers by discipline | Count | As % |
---|---|---|
Chemistry | 18 | 22% |
Engineering | 9 | 11% |
Materials Science | 7 | 8% |
Physics and Astronomy | 6 | 7% |
Environmental Science | 6 | 7% |
Other | 7 | 8% |
Unknown | 30 | 36% |