Facile Hydrothermal Synthesis of a Graphene–Bismuth Oxide Composite and its Photoresponse Performance

Abstract:

Graphene-bismuth oxide composite were fabricated through a facile hydrothermal method. The SEM, XRD, EDS, FTIR were performed to characterize the morphology, composition, structure and surface functional groups. It was found that the Bi₂O₃ evenly spread on the surface of graphene. What is interesting is that two kinds of bismuth oxide can be generate in an experiment. One is spherical Bi₂O₃ with a diameter of 1~2 μm, the other is about 40 nm particle-size growed on the surface of the graphene. The possible growth mechanism was discussed. Under UV-pulsed illumination, graphene-Bi₂O₃ composite electrodes can produce an extracurrent of about 52.92 μA/cm² under 0.3 V bias voltage, this value is higher than the existing report, indicating potential applications in optoelectronic devices. The possible reasons are explained.

• Periodical: Advanced Materials Research (Volume 1035)
• Pages: 524-529
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1035.524
• Online since: October 2014
• Authors: Bao Cheng Yang*, Xiao Wei Lv, Zi Jiong Li, Jie Jie Zhang
• Keywords: Bismuth Oxide, Graphene, Photoresponse Performance

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