2D/1D graphitic carbon nitride/titanate nanotubes heterostructure for efficient photocatalysis of sulfamethazine under solar light: Catalytic “hot spots” at the rutile–anatase–titanate interfaces

By Haodong Ji, Penghui Du, Dongye Zhao, Si-Meng Li, Fengbin Sun, E. Duin, Wen Liu. 2020

279 citations recorded by the source corpus.

Abstract 2D/1D graphitic carbon nitride hybridized with titanate nanotubes (g-C3N4/TNTs) was prepared through a hydrothermal reaction–calcination method. The photocatalyst exhibited high degradation efficiency for sulfamethazine (SMT) through photocatalysis under simulated solar light. The optimized material was composed of anatase, rutile, titanate and g-C3N4 crystalline phases. In situ transformation of titanate to anatase and rutile with specific content proportion (∼80:20, P25-type composition) leaded to formation of nanoscale “hot spots” at rutile–anatase–titanate interfaces, and then subsequent charge transfer occurred. Large specific surface area of TNTs as skeleton resulted in high-efficient interface reaction, while heterojunction with g-C3N4 further extended the adsorption to visible light region and retarded electron-hole pairs recombination. Density functional theory (DFT) calculation indicated the SMT sites with high Fukui nucleophilic (f-) index prefered to be attacked by radacils. Reduced toxicity of SMT degradation intermediates, good reusability and stability of g-C3N4/TNTs all suggested the great application potential in practical water treatment area.

Subfields: Electrical and Electronic Engineering, Materials Chemistry, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/969eee1b0236739ae1b79e8f0a75f1ed0f4786af

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In Materials Chemistry

1. Chongchen Wang
2. Xiao-Hong Yi
3. Peng Wang
4. Wen Liu
5. Qixing Zhou

In Renewable Energy, Sustainability and the Environment

1. Chongchen Wang
2. Xiao-Hong Yi
3. Wen Liu
4. Peng Wang
5. Qixing Zhou
6. Xu Zhao

Citations in the corpus

• Degradation of acetaminophen by activated peroxymonosulfate using Co(OH)2 hollow microsphere supported titanate nanotubes: Insights into sulfate radical production pathway through CoOH+ activation (2021, background): “Generally, the highest occupied molecular orbital (HOMO) represents the ability to lose an electron in a molecule [97], while it cannot quantitively describe the reactivity of a single atom (Fig.”
• Impact of Titanium Dioxide (TiO2) Modification on Its Application to Pollution Treatment—A Review (2020, methodology): “[63] also used titanate materials modified TiO2 to treated the 4-chlorophenol, phenanthrene, and sulfamethazine, respectively.”
• Photocatalysis-activated SR-AOP over PDINH/MIL-88A(Fe) composites for boosted chloroquine phosphate degradation: Performance, mechanism, pathway and DFT calculations (2021, result): “Previous studies have widely reported that HOMO and LUMO can describe the sites where organic pollutant molecules are easy to lose or gain electrons in the reaction process [20,50,51].”