AgNPs uniformly doped onto PVA microspheres for optical recognition application

Bei Yang; Xue Bai; Lihong Xue; Lizhang Yang

AgNPs uniformly doped onto PVA microspheres for optical recognition application

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Author(s): Bei Yang^{1, 2} ; Xue Bai² ; Lihong Xue¹ ; Lizhang Yang¹
- Affiliations: 1: Key Laboratory of Agro-Environment in Downstream of Yangtze Plain, Ministry of Agriculture and Rural Affairs, Institute of Resources and Environment, Jiangsu Academy of Agriculture Sciences , Nanjing 210014 , People's Republic of China ;
  2: Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University , Nanjing 210098 , People's Republic of China
Source: Volume 13, Issue 9, September 2018, p. 1236 – 1239
DOI: 10.1049/mnl.2017.0859 , Online ISSN 1750-0443

Received 12/12/2017, Accepted 19/04/2018, Published 01/09/2018

Via surface aldolisation or semi-aldolisation, the surface of poly(vinyl alcohol) (PVA) microspheres was uniformly doped with sliver nanoparticles (AgNPs). Scanning electron microscope (SEM) revealed the spherical shape of the AgNPs@PVA microspheres. Fourier transform infrared spectra and X-ray photoelectron spectra (XPS) provided information on the surface interactions between AgNPs and PVA microspheres. The AgNPs@PVA microspheres offered simple and rapid qualitative detection of Hg²⁺ ions and pH values through a colour change in aqueous solution. The AgNPs@PVA microspheres also showed off–on behaviour.

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AgNPs uniformly doped onto PVA microspheres for optical recognition application

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