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作者:

Wang, Yueshuai (Wang, Yueshuai.) | Selvakumar, Karuppaiah (Selvakumar, Karuppaiah.) | Oh, Tae Hwan (Oh, Tae Hwan.) | Arunpandian, Muthuraj (Arunpandian, Muthuraj.) | Swaminathan, Meenakshisundaram (Swaminathan, Meenakshisundaram.)

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摘要:

The distribution of active sites across the surface of a catalyst can help alleviate issues with mass transfer and improve atom economy. To create such a precise catalyst, this work reports the high loading of a single metal (tungsten/nickel) atom oxide anchored on the surface of TiO2 nanoparticles (WNiTiR) through a simple sonication method. According to aberration-corrected high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), tungsten/nickel atoms are distributed uniformly over TiO2 and reduced graphene oxide (rGO). The photodegradation process was optimized by investigating the impact of different catalysts, dosage variations, and the pH of the reaction medium. Remarkably, the WNiTiR nanocomposites demonstrated increased photocatalytic activity by degrading over 97.15% of Ibuprofen (IBF) and 98.35% of Ciprofloxacin (CF) pollutants. The findings of the experiment on reactive oxygen species (ROS) showed that the predominant active species were superoxide radicals (O2 center dot-). In addition, the WNiTiR nanocomposite displayed superior structural stability and reusability even after being put through six cycles of continuous use.

关键词:

Single metal atom oxide Ibuprofen Heteropoly acid Ciprofloxacin Photodegradation

作者机构:

  • [ 1 ] [Wang, Yueshuai]Beijing Univ Technol, Inst Microstruct & Properties Adv Mat, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 2 ] [Selvakumar, Karuppaiah]Yeungnam Univ, Sch Chem Engn, Gyongsan 38541, South Korea
  • [ 3 ] [Oh, Tae Hwan]Yeungnam Univ, Sch Chem Engn, Gyongsan 38541, South Korea
  • [ 4 ] [Arunpandian, Muthuraj]PSR Engn Coll, Sevalpatti, Sivakasi 626140, Tamil Nadu, India
  • [ 5 ] [Swaminathan, Meenakshisundaram]Kalasalingam Acad Res & Educ, Dept Chem, Nanomat Lab, Krishnankoil 626126, India

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来源 :

JOURNAL OF ALLOYS AND COMPOUNDS

ISSN: 0925-8388

年份: 2023

卷: 950

6 . 2 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:26

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WoS核心集被引频次:

SCOPUS被引频次: 22

ESI高被引论文在榜: 0 展开所有

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