Luo Binhua, Yang Hang, Zhou Boxun, Ahmed Sanjrani Manzoor, Zhang Yi, Liu Huamin, Liu Xiaowen, He Yong, Xia Shibin
School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China.
Dongfeng Motor Corporation, Equipment Company, Shiyan 442000, China.
ACS Omega. 2020 Mar 3;5(10):5540-5547. doi: 10.1021/acsomega.0c00195. eCollection 2020 Mar 17.
Carbon quantum dots (CQDs) were prepared by a chemical oxidation method using luffa sponge based activated carbon fiber as the raw material. The obtained CQDs were well characterized. The fluorescence quenching effect of Cr(VI) ion on CQDs was investigated. The results show that the addition of Cr(VI) changes the intensity of the ultraviolet characteristic absorption peak of CQDs, and causes static quenching of the fluorescence of CQDs. With the increase in the Cr(VI) concentration, the fluorescence of CQDs was gradually extinguished linearly.
以丝瓜海绵基活性炭纤维为原料，通过化学氧化法制备了碳量子点（CQDs）。对所制备的CQDs进行了充分表征。研究了Cr(VI)离子对CQDs的荧光猝灭作用。结果表明，加入Cr(VI)会改变CQDs紫外特征吸收峰的强度，并导致CQDs荧光的静态猝灭。随着Cr(VI)浓度的增加，CQDs的荧光逐渐呈线性熄灭。
