Investigation of photocatalytic activity of Ag-rutile heterojunctions
- Author(s): Xiaodong Zhu 1, 2 ; Hui Liu 1 ; Juan Wang 1 ; Hualong Dai 1 ; Yu Bai 3 ; Wei Feng 1 ; Shihu Han 4
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View affiliations
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Affiliations:
1:
College of Mechanical Engineering, Chengdu University , Chengdu 610106 , People's Republic of China ;
2: College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology , Chengdu 610059 , People's Republic of China ;
3: Zhongchao Great Wall Precious Metals Co. Ltd. , Chengdu 611130 , People's Republic of China ;
4: School of Materials Sciences and Engineering, Southwest University of Science and Technology , Mianyang 621010 , People's Republic of China
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Affiliations:
1:
College of Mechanical Engineering, Chengdu University , Chengdu 610106 , People's Republic of China ;
- Source:
Volume 15, Issue 15,
30
December
2020,
p.
1130 – 1133
DOI: 10.1049/mnl.2020.0253 , Online ISSN 1750-0443
© The Institution of Engineering and Technology
Received
23/04/2020,
Accepted
26/10/2020,
Revised
19/10/2020,
Published
30/12/2020
The pure rutile and Ag-rutile nanomaterials were synthesised using sol–gel route and the effect of Ag concentration on the composite photocatalyst activity was investigated. The results show that the Ag0 particles are deposited on the rutile surface, forming Ag-rutile heterojunctions. The high concentration of Ag is beneficial to inhibit the recombination of electrons and holes, meanwhile, excessive Ag particles will hinder the absorption of light source and adsorption of RhB molecules. Therefore, 2% of Ag rutile exhibits the highest photocatalytic activity.
Inspec keywords: titanium compounds; photocatalysis; photodissociation; visible spectra; silver; photocatalysts; sol-gel processing; adsorption; nanocomposites; X-ray diffraction; nanofabrication; ultraviolet spectra
Other keywords: composite photocatalyst activity; excessive silver particles; rutile surface; pure rutile; RhB; silver-rutile heterojunctions; silver rutile; electron-hole recombination; silver-rutile nanomaterials; RhB molecule adsorption; light source absorption; Ag; sol–gel route; photocatalytic activity
Subjects: Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials; Other methods of nanofabrication; Photolysis and photodissociation by IR, UV and visible radiation; Sorption and accommodation coefficients (surface chemistry); Adsorption and desorption kinetics; evaporation and condensation; Heterogeneous catalysis at surfaces and other surface reactions; Photocatalysis
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