CO2/Water Emulsions Stabilized by Partially Reduced Graphene Oxide

Chengcheng Liu; Jianling Zhang; Xinxin Sang; Xinchen Kang; Bingxing Zhang; Tian Luo; Xiuniang Tan; Buxing Han; Lirong Zheng; Jing Zhang

doi:10.1021/acsami.7b02546

CO₂/Water Emulsions Stabilized by Partially Reduced Graphene Oxide

ACS Appl Mater Interfaces. 2017 May 24;9(20):17613-17619. doi: 10.1021/acsami.7b02546. Epub 2017 May 10.

Authors

Chengcheng Liu^{1

2}, Jianling Zhang^{1

2}, Xinxin Sang^{1

2}, Xinchen Kang^{1

2}, Bingxing Zhang^{1

2}, Tian Luo¹, Xiuniang Tan¹, Buxing Han^{1

2}, Lirong Zheng³, Jing Zhang³

Affiliations

¹ Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R.China.
² School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences , Beijing 100049, P. R.China.
³ Beijing Synchrotron Radiation Facility (BSRF), Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, P. R.China.

PMID: 28471647
DOI: 10.1021/acsami.7b02546

Abstract

Using functional materials to stabilize emulsions of carbon dioxide (CO₂) and water is a promising way to expand the utility of CO₂ and functional materials. Here we demonstrate for the first time that the partially reduced graphene oxide (rGO) can well stabilize the emulsion of CO₂ and water without the aid of any additional emulsifier or surface modification for rGO. More interestingly, such a novel kind of emulsion provides a facile and versatile route for constructing highly porous three-dimensional rGO materials, including rGO, metal/rGO, and metal oxide/rGO networks. The as-synthesized Au/rGO composite is highly active in catalyzing 4-nitrophenol reduction and styrene epoxidation.

Keywords: CO2; catalysis; emulsion; graphene oxide; water.