Nanosized BiVO4 with high visible-light-induced photocatalytic activity: Ultrasonic-assisted synthesis and protective effect of surfactant

Meng Shang, Wenzhong Wang, Lin Zhou, Songmei Sun, Wenzong Yin

    Research output: Contribution to journalArticlepeer-review

    136 Citations (Scopus)

    Abstract

    Nanosized BiVO4 with high visible-light-induced photocatalytic activity was successfully synthesized via ultrasonic-assisted method with polyethylene glycol (PEG). The BiVO4 sample prepared under ultrasonic irradiation with 1 g PEG for 30 min was consisted of small nanoparticles with the size of ca. 60 nm. The effects of ultrasonic irradiation and surfactant were investigated. The nanosized BiVO4 exhibited excellent visible-light-driven photocatalytic efficiency for degrading organic dye, which was increased to nearly 12 times than that of the products prepared by traditional solid-state reaction. Besides decoloring, the reduction of chemical oxygen demand (COD) concentration was also observed in the degradation of organic dye, further demonstrating the photocatalytic performance of BiVO4. After five recycles, the catalyst did not exhibit any significant loss of photocatalytic activity, confirming the photocatalyst is essentially stable. Close investigation revealed that the crystal size, BET surface area, and appropriate band gap of the as-prepared BiVO4 could improve the photocatalytic activities.

    Original languageEnglish
    Pages (from-to)338-344
    Number of pages7
    JournalJournal of Hazardous Materials
    Volume172
    Issue number1
    DOIs
    Publication statusPublished - Dec 15 2009

    All Science Journal Classification (ASJC) codes

    • Environmental Engineering
    • Environmental Chemistry
    • Waste Management and Disposal
    • Pollution
    • Health, Toxicology and Mutagenesis

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