摘要
Electrochemical detection is an efficient method for the detection of Bisphenol A(BPA).Herein,a sensitive photo-electrochemical sensor based on two-dimensional(2 D)TiO_(2)(001)nanosheets was fabricated and then used for BPA electrochemical detection.Upon light irradiation,the 2 D TiO_(2)(001)nanosheets electrode provided a lower detection limit of BPA detection compared with an ambient electrochemical determination.The low detection limit is^5.37 nmol/L(S/N=3).Furthermore,profiting from the photoelectric characteristics,the 2 D TiO_(2)(001)nanosheets electrode exhibits a nice regeneration prope rty.After 45 min of light irradiation,the electrochemical signal was regenerated from14.7%to 82.9%of the original signal at the 6th cycle.This is attributed to the non-selective·OH mediation produced by the 2 D TiO_(2)(001)nanosheets mineralizing anodic polymeric products and resuming surface reactive sites.This investigation indicates that photo-assistance is an efficient method to improve the electrochemical sensor for detecting BPA in water environments.
基金
the Applied Basic Research Programs of Yunnan Science and Technology Department(No.2017FD085)
the Program of Introducing Talents of Kunming University(Nos.YJL16003 and YJL18008)
National Nature Science Foundation of China(No.61904073)
Science Foundation of Yunnan Provincial Education Department(No.2018JS392)
Projects of Science and Technology Plans of Kunming(No.20191-C-25318000002189)
“Thousand Talents Program”of Yunnan Province for Young Talents
Spring City Plan-Special Program for Young Talents。
