Construction of Cu3P-ZnSnO3-g-C3N4 p-n-n heterojunction with multiple built-in electric fields for effectively boosting visible-light photocatalytic degradation of broad-spectrum antibiotics

Guo, Feng; Huang, Xiliu; Chen, Zhihao; Cao, Longwen; Cheng, Xiaofang; Chen, Lizhuang

doi:10.1016/j.seppur.2021.118477

Cited by 184 publications

(48 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All values were significantly different from those of CN or BP/CN, suggesting that the BP/Au/CN sample had distinguished emission pathways from the pure CN and BP/CN. A certain interface interaction occurred between CN and BP by the introduction of Au NPs, which greatly enhanced the charge transfer capability and suppressed the charge recombination strength by shortening overlap between electrons and holes[49][50][51][52][53]. The high charge transfer ability of BP/Au/CN was in good agreement with the transient photocurrent, PL, and LSV results.…”

supporting

confidence: 72%

Au/g-C3N4 heterostructure sensitized by black phosphorus for full solar spectrum waste-to-hydrogen conversion

Wang

et al. 2021

Sci. China Mater.

View full text Add to dashboard Cite

Photocatalytic water splitting with simultaneous degradation of organic pollutants is an effective strategy to alleviate the increasingly serious energy and environmental crisis. However, the photocatalytic activity is restricted by the high charge recombination rate and limited sunlight utilization. Herein, black phosphorus (BP) with a broad sunlight response range was utilized as a photosensitizer to enhance the photocatalytic performance of the Au/carbon nitride (CN) heterostructure. The as-prepared BP/Au/CN exhibited a significantly enhanced H 2 generation rate of 1400.8 µmol h −1 g −1 under UV-vis light irradiation, which is almost 70 times higher than that of bare CN and BP/CN and 2 folds higher than that of the Au/CN heterojunction. Specifically, the optimal BP/Au/CN sample presented a waste-to-hydrogen production rate of 195.8 µmol h −1 g −1 with the degradation of bisphenol A, verifying the synergistic effect of the ternary heterojunction. The photocatalytic mechanism was systematically studied by the combination of experiments and theoretical calculations. The improved photocatalytic performance was derived from the overall sunlight absorption ability of BP, effective electron transfer media and plasmonic character of Au nanoparticles, as well as the matched work function and strong interaction of the three components. A unidirectional electron transfer from BP to Au and then to CN was established, which effectively improved the charge transfer capability, resulting from the appropriate Ohmic contact of Au and BP and the Schottky barrier constructed in Au/CN hybrid.

show abstract

supporting

confidence: 72%

Au/g-C3N4 heterostructure sensitized by black phosphorus for full solar spectrum waste-to-hydrogen conversion

Wang

et al. 2021

Sci. China Mater.

View full text Add to dashboard Cite

show abstract

“…They are also carcinogenic and can cause a variety of dysfunctions in humans [ 4 , 5 , 6 ]. Tetracycline is a typical broad-spectrum antibiotic and is now widely used in the control of bacterial infections as well as livestock breeding and agricultural production activities [ 1 , 7 , 8 , 9 , 10 ]. However, due to the characteristics of antibiotics, they are not fully utilized in humans and animals, and a large amount of unmetabolized antibiotic residues released has a negative impact on the ecosystem and biological health [ 8 , 9 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

In Situ Coupling Carbon Defective C3N5 Nanosheet with Ag2CO3 for Effective Degradation of Methylene Blue and Tetracycline Hydrochloride

Zeng

Chen

et al. 2022

Nanomaterials

View full text Add to dashboard Cite

The development of novel catalysts for degrading organic contaminants in water is a current hot topic in photocatalysis research for environmental protection. In this study, C3N5 nanosheet/Ag2CO3 nanocomposites (CNAC-X) were used as efficient photocatalysts for the visible-light-driven degradation of methylene blue (MB), and tetracycline hydrochloride (TC-HCl) was synthesized for the first time using a simple thermal oxidative exfoliation and in situ deposition method. Due to the synergistic effect of nanosheet structures, carbon defects, and Z-scheme heterojunctions, CNAC-10 exhibited the highest photocatalytic activity, with photodegradation efficiencies of 96.5% and 97.6% for MB (60 mg/L) and TC-HCl (50 mg/L) within 90 and 100 min, respectively. The radical trapping experiments showed that ·O2− and h+ played major roles in the photocatalytic effect of the CNAC-10 system. Furthermore, intermediates in the photodegradation of MB and TC-HCl were investigated to determine possible mineralization pathways. The results indicated that C3N5 nanosheet/Ag2CO3 photocatalysts prepared in this work could provide an effective reference for the treatment of organic wastewater.

show abstract

“…As presented in Fig. 5(a, b), both BCN and CNNs have positive slopes at frequencies of 500, 1000 and 2000 Hz, suggesting they are n ‐type semiconductors, 50 and the flat band energies ( E FB ) of BCN and CNNs were determined as −1.13 and −0.83 V, respectively. The conduction band energies ( E CB ) of many n ‐type semiconductors are very close to their E FB, 51 and thus the E CB s of BCN and CNNs were estimated to be −1.13 and − 0.83 V, respectively.…”

Section: Resultsmentioning

confidence: 90%

Ultrathin 2D g‐C₃N₄ nanosheets for visible‐light photocatalytic reforming of cellulose into H₂ under neutral conditions

Hong

Zhang

Lin

et al. 2022

J of Chemical Tech & Biotech

Self Cite

View full text Add to dashboard Cite

BACKGROUND: The photocatalytic reforming (PR) of abundant and renewable cellulosic biomass resources into hydrogen (H 2 ) fuel is a promising approach for solar-to-chemical energy conversion. Although the related PR reactions have been investigated, the majority of previous works were operated in strong alkaline conditions (pH > 14) owing to the insolubility of cellulose, and used UV-driven titania (TiO 2 )-based materials as photocatalysts.RESULTS: To this end, for the first time, we present ultrathin 2D graphitic-like carbon nitride (g-C 3 N 4 ) nanosheets (CNNs) derived from the thermal-oxidation strategy for PR of cellulose into H 2 under neutral conditions. Compared to bulk g-C 3 N 4 (BCN), the resulting ultrathin CNNs with an average thickness of 6 nm showed a remarkably increased surface area, significantly improved photogenerated charge mobility, higher electrical conductivity and stronger photooxidation capacity. Consequently, the as-prepared CNNs displayed dramatically enhanced visible-light PR activity for H 2 evolution that was 3.93-fold greater than that of BCN under the same conditions. CONCLUSION: Our study achieves an available avenue for PR of cellulose into H 2 under neutral conditions without the need for value-added sacrificial reagents, which will bring about potential applications in sustainable H 2 production through the PR reaction.

show abstract

Construction of Cu3P-ZnSnO3-g-C3N4 p-n-n heterojunction with multiple built-in electric fields for effectively boosting visible-light photocatalytic degradation of broad-spectrum antibiotics

Cited by 184 publications

References 72 publications

Au/g-C3N4 heterostructure sensitized by black phosphorus for full solar spectrum waste-to-hydrogen conversion

Au/g-C3N4 heterostructure sensitized by black phosphorus for full solar spectrum waste-to-hydrogen conversion

In Situ Coupling Carbon Defective C3N5 Nanosheet with Ag2CO3 for Effective Degradation of Methylene Blue and Tetracycline Hydrochloride

Ultrathin 2D g‐C₃N₄ nanosheets for visible‐light photocatalytic reforming of cellulose into H₂ under neutral conditions

Contact Info

Product

Resources

About

Construction of Cu3P-ZnSnO3-g-C3N4 p-n-n heterojunction with multiple built-in electric fields for effectively boosting visible-light photocatalytic degradation of broad-spectrum antibiotics

Cited by 184 publications

References 72 publications

Au/g-C3N4 heterostructure sensitized by black phosphorus for full solar spectrum waste-to-hydrogen conversion

Au/g-C3N4 heterostructure sensitized by black phosphorus for full solar spectrum waste-to-hydrogen conversion

In Situ Coupling Carbon Defective C3N5 Nanosheet with Ag2CO3 for Effective Degradation of Methylene Blue and Tetracycline Hydrochloride

Ultrathin 2D g‐C3N4 nanosheets for visible‐light photocatalytic reforming of cellulose into H2 under neutral conditions

Contact Info

Product

Resources

About

Ultrathin 2D g‐C₃N₄ nanosheets for visible‐light photocatalytic reforming of cellulose into H₂ under neutral conditions