A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Tailoring Surface Oxygen Vacancies in Tungsten Oxides for Surface Plasmon Resonance-Enhanced Near-Infrared Photoreduction of Cr(VI)
https://orcid.org/0000-0002-0178-9715
https://orcid.org/0000-0003-3437-912X
https://orcid.org/0000-0002-0727-7809
Semiconductor photocatalysis based on nanosized photocatalysts is an emerging solar-utilization technology with great potential in wastewater treatment. The challenge is developing highly efficient and low-cost photocatalysts. Smartly tailoring oxygen vacancies (OVs) is a key step because redundant OVs could serve as the combination centers for electron–hole pairs. Herein, we choose the tungsten oxide (WO3) crystal as the pristine system and modify its surface using ultrathin layered indium zinc sulfide (ZnIn2S4, ZIS) nanosheets to generate in situ surface OVs. The experimental results reveal that ZIS-modified WO3 shows strong near-infrared (NIR) absorption from the surface plasmon resonance (SPR) induced by the generated surface OVs. Meanwhile, the high crystalline and nanorod-like morphology of WO3 can be well maintained, which is beneficial for the transmission and separation of photogenerated carriers. As a result, ZIS-modified WO3 shows enhanced photoreduction of Cr(VI) with a reduction efficiency of 90.39% under NIR light in 100 min, and the reaction rate (k) is ∼17 times that of pristine WO3. This work highlights the important role of tailoring surface OVs and provides a new perspective for alleviating Cr(VI) pollution by highly efficient SPR semiconductor photocatalysts.
This work reports a ZnIn2S4/WO3 photocatalyst that can improve the efficiency of photoreduction of Cr(VI), benefiting from surface plasmon resonance effect.
Tailoring Surface Oxygen Vacancies in Tungsten Oxides for Surface Plasmon Resonance-Enhanced Near-Infrared Photoreduction of Cr(VI)
https://orcid.org/0000-0002-0178-9715
https://orcid.org/0000-0003-3437-912X
https://orcid.org/0000-0002-0727-7809
Semiconductor photocatalysis based on nanosized photocatalysts is an emerging solar-utilization technology with great potential in wastewater treatment. The challenge is developing highly efficient and low-cost photocatalysts. Smartly tailoring oxygen vacancies (OVs) is a key step because redundant OVs could serve as the combination centers for electron–hole pairs. Herein, we choose the tungsten oxide (WO3) crystal as the pristine system and modify its surface using ultrathin layered indium zinc sulfide (ZnIn2S4, ZIS) nanosheets to generate in situ surface OVs. The experimental results reveal that ZIS-modified WO3 shows strong near-infrared (NIR) absorption from the surface plasmon resonance (SPR) induced by the generated surface OVs. Meanwhile, the high crystalline and nanorod-like morphology of WO3 can be well maintained, which is beneficial for the transmission and separation of photogenerated carriers. As a result, ZIS-modified WO3 shows enhanced photoreduction of Cr(VI) with a reduction efficiency of 90.39% under NIR light in 100 min, and the reaction rate (k) is ∼17 times that of pristine WO3. This work highlights the important role of tailoring surface OVs and provides a new perspective for alleviating Cr(VI) pollution by highly efficient SPR semiconductor photocatalysts.
This work reports a ZnIn2S4/WO3 photocatalyst that can improve the efficiency of photoreduction of Cr(VI), benefiting from surface plasmon resonance effect.
Tailoring Surface Oxygen Vacancies in Tungsten Oxides for Surface Plasmon Resonance-Enhanced Near-Infrared Photoreduction of Cr(VI)
https://orcid.org/0000-0002-0178-9715
https://orcid.org/0000-0003-3437-912X
https://orcid.org/0000-0002-0727-7809
Semiconductor photocatalysis based on nanosized photocatalysts is an emerging solar-utilization technology with great potential in wastewater treatment. The challenge is developing highly efficient and low-cost photocatalysts. Smartly tailoring oxygen vacancies (OVs) is a key step because redundant OVs could serve as the combination centers for electron–hole pairs. Herein, we choose the tungsten oxide (WO3) crystal as the pristine system and modify its surface using ultrathin layered indium zinc sulfide (ZnIn2S4, ZIS) nanosheets to generate in situ surface OVs. The experimental results reveal that ZIS-modified WO3 shows strong near-infrared (NIR) absorption from the surface plasmon resonance (SPR) induced by the generated surface OVs. Meanwhile, the high crystalline and nanorod-like morphology of WO3 can be well maintained, which is beneficial for the transmission and separation of photogenerated carriers. As a result, ZIS-modified WO3 shows enhanced photoreduction of Cr(VI) with a reduction efficiency of 90.39% under NIR light in 100 min, and the reaction rate (k) is ∼17 times that of pristine WO3. This work highlights the important role of tailoring surface OVs and provides a new perspective for alleviating Cr(VI) pollution by highly efficient SPR semiconductor photocatalysts.
This work reports a ZnIn2S4/WO3 photocatalyst that can improve the efficiency of photoreduction of Cr(VI), benefiting from surface plasmon resonance effect.
Tailoring Surface Oxygen Vacancies in Tungsten Oxides for Surface Plasmon Resonance-Enhanced Near-Infrared Photoreduction of Cr(VI)
Zheng, Jia-Min (author) / Zhang, Qiao-Yi (author) / Zuo, Zhi-Han (author) / Li, Yi-Yan (author) / Chen, Yibo (author) / Zhang, Jin Zhong (author) / Liu, Zhao-Qing (author)
ACS ES&T Water ; 3 ; 1536-1546
2023-06-09
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2018
| British Library Online Contents | 2018
Surface Plasmon Resonanance Exploitation of Localized Surface Plasmon Resonance
| British Library Online Contents | 2004
Surface-diffusion enhanced Ga incorporation in ZnO nanowires by oxygen vacancies
| British Library Online Contents | 2016
Theoretical Formation Energy of Oxygen-Vacancies in Oxides
| British Library Online Contents | 2002