Graphene oxide wrapped Ag{sub 3}PO{sub 4} sub-microparticles with highly enhanced photocatalytic activity and stability under visible light irradiation

Journal Article · Sat Nov 15 04:00:00 EST 2014 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2014.07.020· OSTI ID:22420620

Xiu, Zhiliang ^[1]; Wu, Yongzhong ^[1]; Hao, Xiaopeng ^[1]; Lu, Qifang; Liu, Suwen ^[2]

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1. State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100 (China)
2. Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass and Functional Ceramics, Key Laboratory of Amorphous and Polycrystalline Materials, Qilu University of Technology, Jinan 250353 (China)

Highlights: • Graphene oxide wrapped Ag{sub 3}PO{sub 4} sub-microparticles were prepared. • The photocatalytic activity of Ag{sub 3}PO{sub 4} is increased by 6 times by GO wrapping. • The hybrid photocatalysts exhibited excellent stability. - Abstract: Graphene oxide (GO) wrapped Ag{sub 3}PO{sub 4} sub-microparticles were prepared by in situ deposition–precipitation method. By hybridization of Ag{sub 3}PO{sub 4} with GO nanosheets, a 6-fold enhancement in the photodegradation rate toward orange methyl (MO) under visible light irradiation (λ ≥ 420 nm) was observed compared with the pure Ag{sub 3}PO{sub 4} sub-microsparticles. The hybrid photocatalysts also exhibited excellent stability in the successive MO degradation experiments. The highly enhanced photocatalytic activity and stability were mainly attributed to the quick transfer of the photogenerated electrons from Ag{sub 3}PO{sub 4} to GO nanosheets, which could effectively suppress the electron–hole pairs recombination and thus inhibit the photocorrosion of Ag{sub 3}PO{sub 4}. These high-efficient and stable hybrid photocatalysts were expected to show considerable potential applications in wastewater treatment and water splitting.

• OSTI ID: 22420620
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 59; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARBON OXIDES
COMPARATIVE EVALUATIONS
DEPOSITION
ELECTRONS
GRAPHENE
IRRADIATION
NANOSTRUCTURES
PHOTOCATALYSIS
PRECIPITATION
RECOMBINATION
SILVER PHOSPHATES
SYNTHESIS
VISIBLE RADIATION
WASTE WATER
WATER TREATMENT