Degradation of methylene blue (MB) using ZnO/CeO2/nanographene platelets (NGP) photocatalyst: Effect of various concentration of NGP

H. Tju, H. Shabrany, A. Taufik, Rosari Saleh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

ZnO/CeO2 photocatalysts were loaded on to nanographene platelets (NGP) layer sheets to form ZnO/CeO2/NGP composites. The synthesized process was achieved by using two-step methods: Sol-gel followed by the hydrothermal method, the concentration of NGP was varied by 5, 10, and 15 wt.%. The as-prepared ZnO/CeO2/NGP samples were characterized by X-ray diffraction (XRD) and Brunner Emett-Teller (BET). The XRD spectra of all samples exhibit a good agreement with hexagonal wurtzite ZnO and face centered cubic phase of CeO2, additionally a new peak could be indexed for graphitic-like structures from NGP. The BET result shows that the incorporation of NGP could enhance the specific surface area of ZnO/CeO2 composites. Furthermore, it is found that addition of NGP in ZnO/CeO2 composites could enhance photocatalytic activities in methylene blue (MB) dye degradation compared to ZnO/CeO2 composites. Our results show that addition of 10 wt.% NGP to ZnO/CeO2 composites exhibits the highest photocatalytic activity. The enhancement of photocatalytic activities can be ascribed to the function of NGP as trap state for the electron. The scavenger tests results indicated that the photo-generated hole would play an important role in the degradation of MB.

Original languageEnglish
Title of host publicationInternational Symposium on Current Progress in Mathematics and Sciences 2016, ISCPMS 2016
Subtitle of host publicationProceedings of the 2nd International Symposium on Current Progress in Mathematics and Sciences 2016
EditorsKiki Ariyanti Sugeng, Djoko Triyono, Terry Mart
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735415362
DOIs
Publication statusPublished - 10 Jul 2017
Event2nd International Symposium on Current Progress in Mathematics and Sciences 2016, ISCPMS 2016 - Depok, Jawa Barat, Indonesia
Duration: 1 Nov 20162 Nov 2016

Publication series

NameAIP Conference Proceedings
Volume1862
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference2nd International Symposium on Current Progress in Mathematics and Sciences 2016, ISCPMS 2016
CountryIndonesia
CityDepok, Jawa Barat
Period1/11/162/11/16

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