Dual asymmetric centrifugation as a new tool to prepare TiO2/S-g-C3N4 heterojunctions with high photocatalytic performance

Fausthon F da Silva; Bo Su

doi:10.1016/j.ceramint.2023.01.109

Dual asymmetric centrifugation as a new tool to prepare TiO₂/S-g-C₃N₄ heterojunctions with high photocatalytic performance

Fausthon F da Silva^*, Bo Su^*

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

13 Citations (Scopus)

Abstract

This work reports the use of dual asymmetric centrifugation (DAC) for the synthesis of TiO₂/S-doped carbon nitride (TiO₂/S-g-C₃N₄) heterojunctions and their performance on rhodamine B (RhB) photodegradation. The optimalTiO₂/S-g-C₃N₄ ratio was determined to be 1.0/0.1 w/w and the XRD, UV-VIS, XPS and FT-IR data confirm the formation of the heterojunction. The TEM analysis indicated TiO₂ nanoparticles dispersed on the surface and/or within the interlayer space of the carbonaceous material. TiO₂/S-g-C₃N₄ (1.0/0.1) heterojunction was able to photodegrade 98.9% of RhB in 60 min under a visible LED light, with photocatalytic performance similar or superior to other similar heterojunctions reported in the literature. Radical trapping experiments and VB-XPS spectra indicated that TiO₂/S-g-C₃N₄ (1.0/0.1) acted via the Z-scheme mechanism

Original language	English
Pages (from-to)	13265-13270
Number of pages	6
Journal	Ceramics International
Volume	49
Issue number	8
Early online date	14 Jan 2023
DOIs	https://doi.org/10.1016/j.ceramint.2023.01.109
Publication status	E-pub ahead of print - 14 Jan 2023

Bibliographical note

Funding Information:
The authors gratefully acknowledge to a CAPES - PrInt - UFPB (N° 8881.311774/2018-01 and 88887.569104/2020-00 ) and CNPq for the financial support.

Funding Information:
The authors gratefully acknowledge to a CAPES-PrInt-UFPB (N° 8881.311774/2018-01 and 88887.569104/2020-00) and CNPq for the financial support.

Publisher Copyright:
© 2023 Elsevier Ltd and Techna Group S.r.l.

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@article{a64bf3a4c62e49d8a456b70656c27230,

title = "Dual asymmetric centrifugation as a new tool to prepare TiO2/S-g-C3N4 heterojunctions with high photocatalytic performance",

abstract = "This work reports the use of dual asymmetric centrifugation (DAC) for the synthesis of TiO2/S-doped carbon nitride (TiO2/S-g-C3N4) heterojunctions and their performance on rhodamine B (RhB) photodegradation. The optimalTiO2/S-g-C3N4 ratio was determined to be 1.0/0.1 w/w and the XRD, UV-VIS, XPS and FT-IR data confirm the formation of the heterojunction. The TEM analysis indicated TiO2 nanoparticles dispersed on the surface and/or within the interlayer space of the carbonaceous material. TiO2/S-g-C3N4 (1.0/0.1) heterojunction was able to photodegrade 98.9% of RhB in 60 min under a visible LED light, with photocatalytic performance similar or superior to other similar heterojunctions reported in the literature. Radical trapping experiments and VB-XPS spectra indicated that TiO2/S-g-C3N4 (1.0/0.1) acted via the Z-scheme mechanism",

author = "{da Silva}, {Fausthon F} and Bo Su",

note = "Funding Information: The authors gratefully acknowledge to a CAPES - PrInt - UFPB (N° 8881.311774/2018-01 and 88887.569104/2020-00 ) and CNPq for the financial support. Funding Information: The authors gratefully acknowledge to a CAPES-PrInt-UFPB (N° 8881.311774/2018-01 and 88887.569104/2020-00) and CNPq for the financial support. Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd and Techna Group S.r.l.",

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T1 - Dual asymmetric centrifugation as a new tool to prepare TiO2/S-g-C3N4 heterojunctions with high photocatalytic performance

AU - da Silva, Fausthon F

AU - Su, Bo

N1 - Funding Information: The authors gratefully acknowledge to a CAPES - PrInt - UFPB (N° 8881.311774/2018-01 and 88887.569104/2020-00 ) and CNPq for the financial support. Funding Information: The authors gratefully acknowledge to a CAPES-PrInt-UFPB (N° 8881.311774/2018-01 and 88887.569104/2020-00) and CNPq for the financial support. Publisher Copyright: © 2023 Elsevier Ltd and Techna Group S.r.l.

PY - 2023/1/14

Y1 - 2023/1/14

N2 - This work reports the use of dual asymmetric centrifugation (DAC) for the synthesis of TiO2/S-doped carbon nitride (TiO2/S-g-C3N4) heterojunctions and their performance on rhodamine B (RhB) photodegradation. The optimalTiO2/S-g-C3N4 ratio was determined to be 1.0/0.1 w/w and the XRD, UV-VIS, XPS and FT-IR data confirm the formation of the heterojunction. The TEM analysis indicated TiO2 nanoparticles dispersed on the surface and/or within the interlayer space of the carbonaceous material. TiO2/S-g-C3N4 (1.0/0.1) heterojunction was able to photodegrade 98.9% of RhB in 60 min under a visible LED light, with photocatalytic performance similar or superior to other similar heterojunctions reported in the literature. Radical trapping experiments and VB-XPS spectra indicated that TiO2/S-g-C3N4 (1.0/0.1) acted via the Z-scheme mechanism

AB - This work reports the use of dual asymmetric centrifugation (DAC) for the synthesis of TiO2/S-doped carbon nitride (TiO2/S-g-C3N4) heterojunctions and their performance on rhodamine B (RhB) photodegradation. The optimalTiO2/S-g-C3N4 ratio was determined to be 1.0/0.1 w/w and the XRD, UV-VIS, XPS and FT-IR data confirm the formation of the heterojunction. The TEM analysis indicated TiO2 nanoparticles dispersed on the surface and/or within the interlayer space of the carbonaceous material. TiO2/S-g-C3N4 (1.0/0.1) heterojunction was able to photodegrade 98.9% of RhB in 60 min under a visible LED light, with photocatalytic performance similar or superior to other similar heterojunctions reported in the literature. Radical trapping experiments and VB-XPS spectra indicated that TiO2/S-g-C3N4 (1.0/0.1) acted via the Z-scheme mechanism

U2 - 10.1016/j.ceramint.2023.01.109

DO - 10.1016/j.ceramint.2023.01.109

M3 - Article (Academic Journal)

SN - 0272-8842

VL - 49

SP - 13265

EP - 13270

JO - Ceramics International

JF - Ceramics International

IS - 8

ER -