期刊
ACS APPLIED NANO MATERIALS
卷 3, 期 2, 页码 1131-1138出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.9b01581
关键词
photocatalytic reduction; zero-valent iron; carbon nanotube; electron transfer; semiconducting Fe oxide surfaces
资金
- National Natural Science Foundation of China [21707110, 41703118, 41502316]
- Foundation of Fundamental Science on Nuclear Waste and Environmental Security Laboratory [17kfhk01]
- Longshan academic talent research supporting program of SWUST [18LZX 205, 18LZX 206]
In this study, nanoscale zero-valent iron (nZVI) particles were synthesized on fullerene, carbon nanotubes, and graphene to use with S. putrefaciens for U(VI) reduction under light conditions. Of the three composites, the nZVI-carbon nanotube (nZVI-CNT) composites removed the highest amount of U(VI) of 1210.9 mg/g. The nZVI-CNT composites and S. putrefaciens exhibited a synergistic effect on U(VI) reduction under light conditions. X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) results revealed the presence of U(IV) species on the reacted bio-nZVI-CNT. S. putrefaciens might decrease the interfacial energy barrier of the photocatalytic reduction process in the bio-nZVI-CNT system. This work highlights the enhanced U(VI) removal capacity of the complex nZVI-CNT and electricigen hybrid system and provides a promising strategy for wastewater treatment.
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