Zhao, T., Hu, Y., Gong, M., Lin, R., Deng, S., Lu, Y., Liu, X., Chen, Y., Shen, T., Hu, Y., Han, L., Xin, H., Chen, S. and Wang, D. (2020) Electronic Structure and Oxophilicity Optimization of Mono-layer Pt for Efficient Electrocatalysis. Nano Energy, 74, 104877-104903.
https://www.sciencedirect.com/science/article/abs/pii/S2211285520304341

has been cited by the following article:

• TITLE: A Graphene-Based Aerogel Was Prepared as Solid Adsorbent for the Enrichment of Platinum (IV) at Trace Concentration

  AUTHORS: Lei Chen, Han Diao, Qijiang Shu, Tao Yang

  KEYWORDS: Graphene, Platinum (IV), Aerogel, Sample Preparation, Three-Dimensional

  JOURNAL NAME: Advances in Materials Physics and Chemistry, Vol.13 No.2, February 14, 2023

  ABSTRACT: A three-dimensional graphene-based composite was prepared by a simple one-step in-site reduced-oxide method under atmospheric pressure. The obtained hydrogel was modified with 4-amino-benzenesulfonic acid and connected with ethylenediamine, and freeze-dried into an aerogel, which was characterized. Then the surface interaction with platinum (Pt, IV) was explored. The obtained aerogel showed good adsorption for Pt (IV) at acid conditions, giving a rising to the adsorption rate > 98% while pH ≤6. Using hexadecyl trimethyl ammonium bromide of 2% (m/V) as an eluent to desorb the Pt (IV) from the surface of the aerogel, a desorption rate of 81.1% was obtained in this process. Urea, buffer aquation and other surfactants were used in the desorption experiment to understand the adsorption mechanism between the aerogel and Pt (IV). In this work, hydrogen bond, van der Waals force and electronic interaction force mainly drove the adsorption process. For obtaining more purified Pt (IV), we used0.5% CTAB to desorb Pd (II). A new three-dimensional graphene-based composite was prepared and the surface interaction between Pt (IV) and composite was experimented for understanding the adsorption mechanism and exploring its potential application in sample preparation in low concentration.