Affordable Access

Access to the full text

Hydroquinone colorimetric sensing based on platinum deposited on CdS nanorods as peroxidase mimics

Authors
  • Zhao, Xin1
  • Lyu, Haoyuan1
  • Yao, Xiuxiu1
  • Xu, Chang1
  • Liu, Qingyun1
  • Liu, Zhenxue1
  • Zhang, Xianxi2
  • Zhang, Xiao3
  • 1 Shandong University of Science and Technology, Qingdao, 266590, People’s Republic of China , Qingdao (China)
  • 2 School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252059, People’s Republic of China , Liaocheng (China)
  • 3 Qingdao University of Science and Technology, Qingdao, 266042, People’s Republic of China , Qingdao (China)
Type
Published Article
Journal
Microchimica Acta
Publisher
Springer-Verlag
Publication Date
Oct 01, 2020
Volume
187
Issue
10
Identifiers
DOI: 10.1007/s00604-020-04451-z
Source
Springer Nature
Keywords
License
Yellow

Abstract

Pt deposited on CdS nanorods (Pt/CdS) have been prepared via the UV light photoreduction method. The Pt/CdS nanocomposites possess highly significant peroxidase-like activity with the assistance of the colorless substrate 3,3,5,5-tetramethylbenzidine (TMB). In the presence of peroxidase mimic Pt/CdS, TMB is quickly oxidized into a typical blue product (oxTMB, which has an obvious absorption at 652 nm) by H2O2 only in 3 min, which is easily detected visually. The catalytic activity of Pt/CdS originates from the accelerated electron transfer between the reactants. Combining the peroxidase-like activity of Pt/CdS with the blue change of TMB, a fast colorimetric sensing platform for detection of H2O2 has been constructed with a linear range 0.10–1.00 mM and a detection limit of 45.5 μM. The platform developed is further used to detect hydroquinone (HQ) in the range1.0–10 μM with a lower detection limit of 0.165 μM. The colorimetric platform has a potential to detect HQ residue in real water samples with recoveries ranging from 83.56 to 91.76%. Graphical abstract

Report this publication

Statistics

Seen <100 times