Universität zu Köln

Pal, Shaili, Kumar, Sunil, Verma, Alkadevi, Kumar, Ajay, Ludwig, Tim, Frank, Michael, Mathur, Sanjay ORCID: 0000-0003-2765-2693, Prakash, Rajiv and Sinha, Indrajit ORCID: 0000-0001-6520-8273 (2020). Development of magnetically recyclable visible light photocatalysts for hydrogen peroxide production. Mater. Sci. Semicond. Process, 112. OXFORD: ELSEVIER SCI LTD. ISSN 1873-4081

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Abstract

The development of magnetically recyclable photocatalysts for economic and green H2O2 synthesis from water and oxygen only is virtually unexplored. Magnetic recyclability makes possible cost-effective laboratory or industrial reuse of the catalyst. The present research shows that magnetically recyclable starch functionalized Fe3O4/Ag/Ag2O superparamagnetic nanocomposites are very good visible light photocatalysts for H2O2 formation. These nanocomposites were prepared by precipitating Ag/Ag2O fine-sized nanostructures on starch functionalized magnetite nanoparticles (SMNPs). HR-TEM, XRD, and XPS analysis results showed the formation of SMNPs dotted with fine-sized Ag/Ag2O nanostructures smaller than their quantum confinement regimes. A p-n heterojunction is formed between (n-type) starch functionalized magnetite and (p-type) Ag2O components. Enhanced charge separation and the presence of plasmonic Ag nanostructures on the SM component cause efficient oxygen reduction with high H2O2 formation rates.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Pal, Shaili UNSPECIFIED UNSPECIFIED UNSPECIFIED Kumar, Sunil UNSPECIFIED UNSPECIFIED UNSPECIFIED Verma, Alkadevi UNSPECIFIED UNSPECIFIED UNSPECIFIED Kumar, Ajay UNSPECIFIED UNSPECIFIED UNSPECIFIED Ludwig, Tim UNSPECIFIED UNSPECIFIED UNSPECIFIED Frank, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED Mathur, Sanjay UNSPECIFIED orcid.org/0000-0003-2765-2693 UNSPECIFIED Prakash, Rajiv UNSPECIFIED UNSPECIFIED UNSPECIFIED Sinha, Indrajit UNSPECIFIED orcid.org/0000-0001-6520-8273 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-330021
DOI:	10.1016/j.mssp.2020.105024
Journal or Publication Title:	Mater. Sci. Semicond. Process
Volume:	112
Date:	2020
Publisher:	ELSEVIER SCI LTD
Place of Publication:	OXFORD
ISSN:	1873-4081
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Inorganic Chemistry
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MOLECULAR-OXYGEN; H2O2 PRODUCTION; GRAPHENE OXIDE; CARBON NITRIDE; WATER; O-2; H-2; NANOPARTICLES; DEGRADATION; GENERATION Multiple languages Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/33002