Details
| Original language | English |
|---|---|
| Article number | 131681 |
| Journal | Chemical Engineering Journal |
| Volume | 426 |
| Early online date | 10 Aug 2021 |
| Publication status | Published - 15 Dec 2021 |
Abstract
The conversion of solar energy into chemical energy through semiconductor-based photocatalysis technology is an appealing strategy towards resolving the energy crisis and environmental pollution issues. However, the practical application of photocatalysis is impeded by its limited photocatalytic efficiency due to the intrinsic nature of photocatalysts, i.e., recombination of photogenerated electrons and holes. To this end, non-centrosymmetric (NCS) based photocatalytic materials including piezoelectrics, pyroelectrics, ferroelectrics and nonlinear optical (NLO) materials are attractive, which can not only convert mechanical energy and temperature fluctuation in the environment besides solar energy into secondary energy, but can also promote the separation of photogenerated charge carriers due to their built-in electric field resultant polarization, thus greatly improving their photocatalytic performance. Here, we first surveyed the recent advances in of NCS-based photocatalytic materials. Further, the correlation of their polarization-related physical properties with their photocatalytic activities and the strategies towards improving polarization of NCS materials were systematically summarized and highlighted, aiming to clarify the correlation of the improvement of polarization with the enhanced photocatalytic performance. Subsequently, the photocatalytic mechanism and multiple applications of photocatalysis in environmental remediation and energy conversion based on NCS materials were presented. Meanwhile, we discussed the remaining challenges for NCS materials and strategies for enhancing their photocatalytic efficiency. Finally, the development trend and future perspectives of NCS photocatalytic materials in environmental chemical engineering is presented.
Keywords
- Built-in electric field, Energy conversion, Environmental remediation, Non-centrosymmetric materials, Polarization
ASJC Scopus subject areas
- Chemistry(all)
- Environmental Science(all)
- Environmental Chemistry
- Chemical Engineering(all)
- Engineering(all)
- Industrial and Manufacturing Engineering
Sustainable Development Goals
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In: Chemical Engineering Journal, Vol. 426, 131681, 15.12.2021.
Research output: Contribution to journal › Review article › Research › peer review
}
TY - JOUR
T1 - Polarization-enhanced photocatalytic activity in non-centrosymmetric materials based photocatalysis
T2 - A review
AU - Zhu, Qiuhui
AU - Zhang, Ke
AU - Li, Danqing
AU - Li, Nan
AU - Xu, Jingkun
AU - Bahnemann, Detlef W.
AU - Wang, Chuanyi
N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (No. 21976116 ), Shaanxi Science and Technology Program (No. 2020KWZ-005 ), SAFEA of China (High-end Foreign Expert Project) , and Alexander-von-Humboldt Foundation of Germany (Group-Linkage Program) .
PY - 2021/12/15
Y1 - 2021/12/15
N2 - The conversion of solar energy into chemical energy through semiconductor-based photocatalysis technology is an appealing strategy towards resolving the energy crisis and environmental pollution issues. However, the practical application of photocatalysis is impeded by its limited photocatalytic efficiency due to the intrinsic nature of photocatalysts, i.e., recombination of photogenerated electrons and holes. To this end, non-centrosymmetric (NCS) based photocatalytic materials including piezoelectrics, pyroelectrics, ferroelectrics and nonlinear optical (NLO) materials are attractive, which can not only convert mechanical energy and temperature fluctuation in the environment besides solar energy into secondary energy, but can also promote the separation of photogenerated charge carriers due to their built-in electric field resultant polarization, thus greatly improving their photocatalytic performance. Here, we first surveyed the recent advances in of NCS-based photocatalytic materials. Further, the correlation of their polarization-related physical properties with their photocatalytic activities and the strategies towards improving polarization of NCS materials were systematically summarized and highlighted, aiming to clarify the correlation of the improvement of polarization with the enhanced photocatalytic performance. Subsequently, the photocatalytic mechanism and multiple applications of photocatalysis in environmental remediation and energy conversion based on NCS materials were presented. Meanwhile, we discussed the remaining challenges for NCS materials and strategies for enhancing their photocatalytic efficiency. Finally, the development trend and future perspectives of NCS photocatalytic materials in environmental chemical engineering is presented.
AB - The conversion of solar energy into chemical energy through semiconductor-based photocatalysis technology is an appealing strategy towards resolving the energy crisis and environmental pollution issues. However, the practical application of photocatalysis is impeded by its limited photocatalytic efficiency due to the intrinsic nature of photocatalysts, i.e., recombination of photogenerated electrons and holes. To this end, non-centrosymmetric (NCS) based photocatalytic materials including piezoelectrics, pyroelectrics, ferroelectrics and nonlinear optical (NLO) materials are attractive, which can not only convert mechanical energy and temperature fluctuation in the environment besides solar energy into secondary energy, but can also promote the separation of photogenerated charge carriers due to their built-in electric field resultant polarization, thus greatly improving their photocatalytic performance. Here, we first surveyed the recent advances in of NCS-based photocatalytic materials. Further, the correlation of their polarization-related physical properties with their photocatalytic activities and the strategies towards improving polarization of NCS materials were systematically summarized and highlighted, aiming to clarify the correlation of the improvement of polarization with the enhanced photocatalytic performance. Subsequently, the photocatalytic mechanism and multiple applications of photocatalysis in environmental remediation and energy conversion based on NCS materials were presented. Meanwhile, we discussed the remaining challenges for NCS materials and strategies for enhancing their photocatalytic efficiency. Finally, the development trend and future perspectives of NCS photocatalytic materials in environmental chemical engineering is presented.
KW - Built-in electric field
KW - Energy conversion
KW - Environmental remediation
KW - Non-centrosymmetric materials
KW - Polarization
UR - http://www.scopus.com/inward/record.url?scp=85113707273&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2021.131681
DO - 10.1016/j.cej.2021.131681
M3 - Review article
AN - SCOPUS:85113707273
VL - 426
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
M1 - 131681
ER -