Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 543, Issue -, Pages 25-33Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2019.01.133
Keywords
Carbon nitride nanorods; Ag/AgCI nanoparticle; Heterostructure; Visible-light; Photocatalytic activity
Categories
Funding
- National Key Research and Development Program of China [2016YFC0400501, 2016YFC0400502]
- National Natural Science Foundation of China [21477019, 51473033, 51773036]
- Natural Science Foundation of Shanghai [18ZR1401700]
- Shanghai Shuguang Program [18SG29]
- Innovation Program of Shanghai Municipal Education Commission [2017-01-07-00-03-E00055]
- International Joint Laboratory for Advanced fiber and Low-dimension Materials [18520750400]
- Fundamental Research Funds for the Central Universities
- DHU Distinguished Young Professor Program
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The non-metallic organic polymer carbon nitride has attracted widespread attentions, but its photocatalytic performance is unsatisfactory due to high recombination of photoinduced carriers. To solve this issue, we report Ag/AgCl-decorated carbon nitride (CN) nanorod heterojunctions as efficient and stable photocatalyst. CN nanorods (diameter: similar to 25 nm; lengths: 1-1.5 pm) were prepared by a simple solvothermal route, and then in-situ growth of Ag/AgCI nanoparticles (diameter: 20-40 nm) on CN surface was realized by a facile co-precipitation method. Ag/AgCl-decorated CN heterojunctions with diverse Ag/CN precursor molar-ratios (0.3, 0.5, 0.7) exhibit a wide absorption spectrum from UV to visible-light region (similar to 750 nm). After the illumination of visible-light for 120 min, 0.5-Ag/AgCl-CN nanorods can degrade 98.5% rhodamine B (RhB), 75.4% tetracycline (TC) and 39.5% Cr(VI), obviously better than those of CN nanorods (62.6% RhB, 35.6% TC, 19.7% Cr(VI)), Ag/AgCI nanoparticles (66.5% RhB, 18.5% TC, 24.6% Cr (VI)) and Ag-CN (72.6% RhB, 39.4% TC, 28.7% Cr(VI)). This obvious improvement should result from efficient separation of photogenerated carriers. Therefore, Ag/AgCl-CN can act as an efficient and stable visible-light-driven photocatalyst. (C) 2019 Elsevier Inc. All rights reserved.
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