Efficient full spectrum responsive photocatalytic NO conversion at Bi2Ti2O7: Co-effect of plasmonic Bi and oxygen vacancies

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Qiuhui Zhu
  • Reshalaiti Hailili
  • Yue Xin
  • Yingtang Zhou
  • Yu Huang
  • Xinzhu Pang
  • Ke Zhang
  • Peter K.J. Robertson
  • Detlef W. Bahnemann
  • Chuanyi Wang

Research Organisations

External Research Organisations

  • Shaanxi University of Science and Technology
  • Queen's University Belfast
  • Beijing University of Technology
  • Shihezi University
  • Zhejiang Ocean University
  • Saint Petersburg State University
  • Chinese Academy of Sciences (CAS)
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Details

Original languageEnglish
Article number121888
JournalApplied Catalysis B: Environmental
Volume319
Early online date24 Aug 2022
Publication statusPublished - 15 Dec 2022

Abstract

Developing full-spectrum responsive and efficient photocatalysts is still an important challenge in the field of photocatalytic treatment of trace environmental pollutants. Herein, full-spectrum Bi@Bi2Ti2O7 with rich-oxygen vacancies (OVs) were fabricated via a one-pot hydrothermal method. The optimized composite photocatalyst exhibited a photocatalytic efficiency of 79 %, more than doubled higher than that of its counterpart, Bi2Ti2O7 (31.79 %), for removing ppb-level NO under visible-near infrared (Vis-NIR) irradiation. The enhanced photocatalytic performance was attributed to the co-effect of Bi and OVs reveal by control experiments and theoretical calculations, which not only benefited the adsorption and photocatalytic activation of NO but broadened light absorption to near infrared region. Furthermore, the adsorption and photocatalytic conversion pathway of NO was explored by in situ DRIFTS, suggesting that NO+ as intermediate species is crucial to improve the selectivity of NO converting to nitrate. This work provides a new perspective of constructing full-spectrum-driven photocatalysts for environment remediation.

Keywords

    Full spectrum response, Oxygen vacancies, Photocatalysis, Plasmonic Bi metal, Synergistic effect

ASJC Scopus subject areas

Cite this

Efficient full spectrum responsive photocatalytic NO conversion at Bi2Ti2O7: Co-effect of plasmonic Bi and oxygen vacancies. / Zhu, Qiuhui; Hailili, Reshalaiti; Xin, Yue et al.
In: Applied Catalysis B: Environmental, Vol. 319, 121888, 15.12.2022.

Research output: Contribution to journalArticleResearchpeer review

Zhu, Q, Hailili, R, Xin, Y, Zhou, Y, Huang, Y, Pang, X, Zhang, K, Robertson, PKJ, Bahnemann, DW & Wang, C 2022, 'Efficient full spectrum responsive photocatalytic NO conversion at Bi2Ti2O7: Co-effect of plasmonic Bi and oxygen vacancies', Applied Catalysis B: Environmental, vol. 319, 121888. https://doi.org/10.1016/j.apcatb.2022.121888
Zhu, Q., Hailili, R., Xin, Y., Zhou, Y., Huang, Y., Pang, X., Zhang, K., Robertson, P. K. J., Bahnemann, D. W., & Wang, C. (2022). Efficient full spectrum responsive photocatalytic NO conversion at Bi2Ti2O7: Co-effect of plasmonic Bi and oxygen vacancies. Applied Catalysis B: Environmental, 319, Article 121888. https://doi.org/10.1016/j.apcatb.2022.121888
Zhu Q, Hailili R, Xin Y, Zhou Y, Huang Y, Pang X et al. Efficient full spectrum responsive photocatalytic NO conversion at Bi2Ti2O7: Co-effect of plasmonic Bi and oxygen vacancies. Applied Catalysis B: Environmental. 2022 Dec 15;319:121888. Epub 2022 Aug 24. doi: 10.1016/j.apcatb.2022.121888
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title = "Efficient full spectrum responsive photocatalytic NO conversion at Bi2Ti2O7: Co-effect of plasmonic Bi and oxygen vacancies",
abstract = "Developing full-spectrum responsive and efficient photocatalysts is still an important challenge in the field of photocatalytic treatment of trace environmental pollutants. Herein, full-spectrum Bi@Bi2Ti2O7 with rich-oxygen vacancies (OVs) were fabricated via a one-pot hydrothermal method. The optimized composite photocatalyst exhibited a photocatalytic efficiency of 79 %, more than doubled higher than that of its counterpart, Bi2Ti2O7 (31.79 %), for removing ppb-level NO under visible-near infrared (Vis-NIR) irradiation. The enhanced photocatalytic performance was attributed to the co-effect of Bi and OVs reveal by control experiments and theoretical calculations, which not only benefited the adsorption and photocatalytic activation of NO but broadened light absorption to near infrared region. Furthermore, the adsorption and photocatalytic conversion pathway of NO was explored by in situ DRIFTS, suggesting that NO+ as intermediate species is crucial to improve the selectivity of NO converting to nitrate. This work provides a new perspective of constructing full-spectrum-driven photocatalysts for environment remediation.",
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note = "Funding Information: This work was supported by the National Natural Science Foundation of China (Nos. 21976116, 21902161, 52161145409 ), Shaanxi Science and Technology Program ( 2020KWZ-005 ), SAFEA of China (High-end Foreign Expert Project), Alexander-von-Humboldt Foundation of Germany (Group-Linkage Program). Q.H.Z. acknowledges the support from China Scholarship Council (No. 202108610177 ). R. Hailili gratefully acknowledges the support from the Alexander von Humboldt Foundation . D.W.B. acknowledges financial support from Saint Petersburg State University (Research Grant 39054581 ). ",
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TY - JOUR

T1 - Efficient full spectrum responsive photocatalytic NO conversion at Bi2Ti2O7

T2 - Co-effect of plasmonic Bi and oxygen vacancies

AU - Zhu, Qiuhui

AU - Hailili, Reshalaiti

AU - Xin, Yue

AU - Zhou, Yingtang

AU - Huang, Yu

AU - Pang, Xinzhu

AU - Zhang, Ke

AU - Robertson, Peter K.J.

AU - Bahnemann, Detlef W.

AU - Wang, Chuanyi

N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (Nos. 21976116, 21902161, 52161145409 ), Shaanxi Science and Technology Program ( 2020KWZ-005 ), SAFEA of China (High-end Foreign Expert Project), Alexander-von-Humboldt Foundation of Germany (Group-Linkage Program). Q.H.Z. acknowledges the support from China Scholarship Council (No. 202108610177 ). R. Hailili gratefully acknowledges the support from the Alexander von Humboldt Foundation . D.W.B. acknowledges financial support from Saint Petersburg State University (Research Grant 39054581 ).

PY - 2022/12/15

Y1 - 2022/12/15

N2 - Developing full-spectrum responsive and efficient photocatalysts is still an important challenge in the field of photocatalytic treatment of trace environmental pollutants. Herein, full-spectrum Bi@Bi2Ti2O7 with rich-oxygen vacancies (OVs) were fabricated via a one-pot hydrothermal method. The optimized composite photocatalyst exhibited a photocatalytic efficiency of 79 %, more than doubled higher than that of its counterpart, Bi2Ti2O7 (31.79 %), for removing ppb-level NO under visible-near infrared (Vis-NIR) irradiation. The enhanced photocatalytic performance was attributed to the co-effect of Bi and OVs reveal by control experiments and theoretical calculations, which not only benefited the adsorption and photocatalytic activation of NO but broadened light absorption to near infrared region. Furthermore, the adsorption and photocatalytic conversion pathway of NO was explored by in situ DRIFTS, suggesting that NO+ as intermediate species is crucial to improve the selectivity of NO converting to nitrate. This work provides a new perspective of constructing full-spectrum-driven photocatalysts for environment remediation.

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KW - Oxygen vacancies

KW - Photocatalysis

KW - Plasmonic Bi metal

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