Catalytic membrane nano reactor with two-dimensional channels assembly of graphene oxide nanosheets with ZIF-67 derived Co3S4 catalyst immobilized on

A catalytic membrane nano reactor (CMNR) with two-dimensional channels has been fabricated by graphene oxide (GO) nanosheets with ZIF-67 derived Co 3 S 4 catalyst immobilized on. The characterization by X-ray diffraction (XRD), Raman spectroscopy and X-ray photoelectron Spectroscopy (XPS) indicates the successful fabrication of Co 3 S 4 @GO nanosheets. The uniformly dispersed Co 3 S 4 nanoparticles immobilized on GO nanosheets in the range of 3–5 nm and the thickness of the CMNR is in the range of 206–1091 nm can be determined by Transmission electron microscope (TEM) and Scanning electron microscope (SEM), respectively. The catalytic performance of this CMNR has been evaluated by 4-nitrothiophenol (4-NTP) reduction under the flow-through mode. The 4-NTP conversion of over 99% can be achieved under the condition of membrane flux of being 144.4 L·m −2 ·h −1 . The uniformly dispersed Co 3 S 4 with small size and the confined two-dimensional channels with nano scale for enhanced mass transfer can be contributed to the good catalytic performance of this CMNR. High 4-NTP conversion and nice stability can be achieved for a long time by this CMNR under the condition of humic acid mixed in the reactant solution, since the CMNR is resistant to the poisoning of catalysts by humic acid.