A sensitive and selective sensor for the detection of chloroform using biosurfactant ethoxylated phytosterol-capped gold nanoparticles

作者：Jia, Han^*; Leng, Xu; Huang, Pan; Zhao, Ning; An, Jibin; Wu, Hongyan; Song, Yilei; Zhu, Yanguang; Zhou, Hongtao^*

来源：Materials Chemistry and Physics, 2017, 202: 285-288.

DOI：10.1016/j.matchemphys.2017.09.056

• Nanostructures
• Interfaces
• Adsorption
• Visible and ultraviolet spectrometers

A facile, sensitive, and selective sensor was developed to detect chloroform using biosurfactant ethoxylated phytosterol-capped gold nanoparticles (BPS-GNPs). The BPS-GNPs were induced to aggregate rapidly with the addition of chloroform. Detection of additional chloroform of relatively small volume can be easily realized by monitoring the color fading of BPS-GNP aqueous solution by the naked eye. The presence of the chloroform with extremely small volume can be monitored by UV-vis spectra. A possible detection mechanism based on "double interface competitive adsorption" was proposed. Other common organic substances were used to further verify the selectivity of the detection.

• 出版日期2017-12-1
• 单位中国石油大学（华东）