宽pH条件下运行的太阳光催化钨酸铋降解抗生素诺氟沙星

Translated title of the contribution: Exploring a broadened operating pH range for norfloxacin removal via simulated solar-light-mediated Bi2WO6 process

Meijuan Chen, Yu Huang, Wei Chu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

10 Citations (Scopus)

Abstract

Semiconductor photocatalysis can be operated over a narrow pH range for wastewater treatment. In this study, a simulated solar-light-mediated bismuth tungstate (SSL/Bi2WO6) process is found to be effective for norfloxacin degradation over a narrow pH range. To broaden the operating pH range of the SSL/Bi2WO6 process, an NH4 + buffer system and an Fe3+ salt were introduced under extremely basic and acidic pH conditions, respectively. The NH4 + buffer system continuously supplied hydroxyl ions to generate •OH radicals and prevented acidification of the solution, resulting in improved norfloxacin removal and mineralization removal under alkaline conditions. In contrast, the Fe3+ salt offered an additional homogeneous photo-sensitization pathway. The former treatment assisted in norfloxacin decay and the latter increased the collision frequency between the photo-generated hole and hydroxyl ions. Moreover, the effect of parameters such as pH and Fe3+ dosage was optimized.

Translated title of the contributionExploring a broadened operating pH range for norfloxacin removal via simulated solar-light-mediated Bi2WO6 process
Original languageChinese
Pages (from-to)673-680
Number of pages8
JournalCuihua Xuebao/Chinese Journal of Catalysis
Volume40
Issue number5
Publication statusPublished - 1 May 2019

Keywords

  • Bismuth tungstate
  • Broadened operating pH
  • Norfloxacin
  • Photocatalysis
  • Water

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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