Constructing oxygen absorption and activation sites in Ce-doped g-C3N4 photocatalyst for effective removal of amoxicillin: Performance, mechanism and degradation pathways

Luo, Jianmin; Han, Haonan; Wang, Xinglei; Lai, Yinlong; Liu, Bin; Zhong, Ruimin; Zhang, Yi; Zhang, Shenling; Wang, Lei

doi:10.1016/j.apsusc.2022.155808

Cited by 16 publications

(3 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the observed 30 times enhancement in H 2 evolution efficiency compared to undoped g-C 3 N 4 was attributed to improved charge separation and charge transfer efficiency upon Cu doping. Ce-doping of g-C 3 N 4 via a pyrolysis approach introduced multivalent Ce ions (+3 and +4) . In this case, Ce-ion is substituted for bridging N atoms (N4 in Figure ) of g-C 3 N 4 .…”

Section: Opportunities To Red-shift the Optical Absorption Of G-c3n4 ...mentioning

confidence: 99%

See 1 more Smart Citation

Extending the Optical Absorption Limit of Graphitic Carbon Nitride Photocatalysts: A Review

Chandrappa,

Galbao,

Furube

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Due to its chemical/thermal stability, metal-free nature, abundance, low toxicity, cost-effectiveness, high surface area, tunable properties, and ease of synthesis, graphitic carbon nitride (g-C 3 N 4 ) is a promising material for applications in catalysis, sensing, energy storage and optoelectronics. By virtue of its optical band gap, g-C 3 N 4 has been extensively used to drive a range of photocatalytic reactions, such as H 2 generation, CO 2 reduction, N 2 fixation, and organic transformation, to name a few. Despite these prospects, significant improvement in extending its optical absorption is essential because g-C 3 N 4 absorbs light only up to 460 nm (≈10% of the incoming sunlight). Thus, reducing its band gap to harness a wider part of the sunlight is a key approach to advancing the solar energy conversion efficiency of g-C 3 N 4 . In this direction, the effect of (i) improving the degree of polymerization, (ii) molecular and elemental doping, (iii) distorting planar structure, (iv) inducing nitrogen vacancies, and (v) tuning the C/N ratio of g-C 3 N 4 on red-shifting the optical absorption is analyzed in detail. A comprehensive correlation between the synthesis approach/conditions−structure−optical property is established. Rational guidelines on extending the spectral response of g-C 3 N 4 toward the visible/near-infrared region and using low-energy photons to drive photocatalytic reactions efficiently are detailed. The insights presented will help to utilize the full potential of g-C 3 N 4 to enhance the solar fuel generation efficiency and in understanding the mechanism of light absorption.

show abstract

Section: Opportunities To Red-shift the Optical Absorption Of G-c3n4 ...mentioning

confidence: 99%

“…Ce-doping of g-C 3 N 4 via a pyrolysis approach introduced multivalent Ce ions (+3 and +4). 164 In this case, Ce-ion is substituted for bridging N atoms (N4 in Figure 7) of g-C 3 N 4 . However, the extent of red-shift in the optical absorption was less than 20 nm.…”

Section: Inducing N-vacancies Below π* (Lumo)mentioning

confidence: 99%

Extending the Optical Absorption Limit of Graphitic Carbon Nitride Photocatalysts: A Review

Chandrappa,

Galbao,

Furube

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

show abstract

“…Rare earth metals have a unique valence electron structure that precludes photoelectron/hole complexation [10,[16][17][18]]. Among the rare earth metals, cerium (Ce) has better electrical conductivity, and the mixed valence states of 3valence and 4-valence makes Ce-based materials attractive in heterogeneous catalysis [19,20], so Ce dopped g-C 3 N 5 leads to different optical properties, which in turn leads to a high charge mobility to improve photocatalytic e ciency.…”

Section: Introductionmentioning

confidence: 99%

A novel S-scheme ZnO/Ce-g-C3N5 heterojunctions with enhanced photocatalytic activity

Jia,

Huang,

Yan

et al. 2024

Preprint

View full text Add to dashboard Cite

Creating a high-performance photocatalyst is critical for enhancing the degradation of organic contaminants in wastewater. A novel ZN/Ce-CN heterojunctions, in which ZnO nanoparticles were uniformly deposited on the rare earth metal cerium doped g-C3N5 (Ce-CN) nanosheets, was fabricated in a two-step process (hydrothermal and calcination). The Mott-Schott test revealed S-scheme heterojunctions formed between Ce-CN and ZnO rather than type II. Regarding methylene blue (MB) degradation, the as-prepared heterojunctions demonstrated significantly more photocatalytic activity than Ce-CN and ZnO. The presence of heterojunctions in ZN/Ce-CN improves the separation efficiency of photo-induced e-h+ pairs, resulting in ZN/Ce-CN's superior photocatalytic activity. The primary active species engaged in photocatalytic degradation have been discovered to be h+, •OH, and •O2- based on the research results using electron spin resonance spectra and radical trapping. Furthermore, ZN/Ce-CN had excellent reusability and stability. These results demonstrate the remarkable photocatalytic activity of S-scheme photocatalyst in the degradation of organic contaminants.

show abstract

Exploring the potential of CoMoO4-modified graphitic carbon nitride to boost oxidation of amoxicillin micropollutants in hospital wastewater

Thi,

Bui,

Nguyen

et al. 2024

Environ Geochem Health

View full text Add to dashboard Cite

Constructing oxygen absorption and activation sites in Ce-doped g-C3N4 photocatalyst for effective removal of amoxicillin: Performance, mechanism and degradation pathways

Cited by 16 publications

References 56 publications

Extending the Optical Absorption Limit of Graphitic Carbon Nitride Photocatalysts: A Review

Extending the Optical Absorption Limit of Graphitic Carbon Nitride Photocatalysts: A Review

A novel S-scheme ZnO/Ce-g-C3N5 heterojunctions with enhanced photocatalytic activity

Exploring the potential of CoMoO4-modified graphitic carbon nitride to boost oxidation of amoxicillin micropollutants in hospital wastewater

Contact Info

Product

Resources

About