期刊
NANOMATERIALS
卷 10, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/nano10081610
关键词
manganese oxide; activated carbon; nanocomposite; photocatalyst; green synthesis; hydrogen production
类别
资金
- National Research Foundation (NRF) of Korea through the basic science research programs - Korean Government [2016R1A6A1A03012877, 2019R1A2C1085448]
- Science and Engineering Research Board (SERB) of India through the research program of Recovery of Hydrogen from Industrial Waste Streams [YSS/2015/001964]
In the present work, we demonstrated the upcycling technique of effective wastewater treatment via photocatalytic hydrogen production by using the nanocomposites of manganese oxide-decorated activated carbon (MnO2-AC). The nanocomposites were sonochemically synthesized in pure water by utilizing MnO(2)nanoparticles and AC nanoflakes that had been prepared through green routes using the extracts of Brassica oleracea and Azadirachta indica, respectively. MnO2-AC nanocomposites were confirmed to exist in the form of nanopebbles with a high specific surface area of similar to 109 m(2)/g. When using the MnO2-AC nanocomposites as a photocatalyst for the wastewater treatment, they exhibited highly efficient hydrogen production activity. Namely, the high hydrogen production rate (395 mL/h) was achieved when splitting the synthetic sulphide effluent (S2-= 0.2 M) via the photocatalytic reaction by using MnO2-AC. The results stand for the excellent energy-conversion capability of the MnO2-AC nanocomposites, particularly, for photocatalytic splitting of hydrogen from sulphide wastewater.
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