TY - JOUR
T1 - Improved CO2 photocatalytic reduction using a novel 3-component heterojunction
AU - Butburee, Teera
AU - Sun, Zhuxing
AU - Centeno, Anthony
AU - Xie, Fang
AU - Zhao, Zhefei
AU - Wu, Daxiong
AU - Peerakiatkhajohn, Piangjai
AU - Thaweesak, Supphasin
AU - Wang, Haiqiang
AU - Wang, Lianzhou
N1 - Funding Information:
The authors acknowledge the financial support from Australian Research Council (Discovery Projects), National Nanotechnology Center (NANOTEC, Thailand), Royal Thai Government Scholarship for Science and Technology , National Natural Science Foundation of China (No. 51578488 and No. 2180050404 ) and Program for Zhejiang Leading Team of S&T Innovation (Grant No. 2013TD07 ). AC acknowledges support from the XJTLU research development fund ( RDF-17-01-12 ).
Publisher Copyright:
© 2019
PY - 2019/8
Y1 - 2019/8
N2 - A new class of three-component photocatalyst system is designed with plasmonic AuCu nanoprisms embedded between a porous single crystalline TiO2 nanoplate thin film and polyhedral zeolitic imidazolate frameworks (ZIF-8) nanoparticles for enhanced CO2 photocatalytic reduction. The ZIF-8 plays a role of CO2 capture to enhance the reactant concentration on the catalyst, while the AuCu nanoprisms function mainly as a mediator to improve the charge density at the interfaces and facilitate the charge transfer to the CO2 adsorption sites on ZIF-8 for subsequent CO2 reduction. The reactant CO2 could be not only readily collected on the newly designed catalyst, but also more efficiently converted to CO and CH4. As a result, compared to the reference sample of two-component system of TiO2 and ZIF-8 with a CO2 conversion rate of 12.5 μmol h−1 g−1, the new three-component photocatalyst exhibited a nearly 7-fold improvement in CO2 photocatalytic reduction performance with CO2 conversion reaching an outstanding value of 86.9 μmol h−1 g−1, highlighting the importance of rational heterojunction design in facilitating reactant adsorption, charge transfer and reaction processes in photocatalysis.
AB - A new class of three-component photocatalyst system is designed with plasmonic AuCu nanoprisms embedded between a porous single crystalline TiO2 nanoplate thin film and polyhedral zeolitic imidazolate frameworks (ZIF-8) nanoparticles for enhanced CO2 photocatalytic reduction. The ZIF-8 plays a role of CO2 capture to enhance the reactant concentration on the catalyst, while the AuCu nanoprisms function mainly as a mediator to improve the charge density at the interfaces and facilitate the charge transfer to the CO2 adsorption sites on ZIF-8 for subsequent CO2 reduction. The reactant CO2 could be not only readily collected on the newly designed catalyst, but also more efficiently converted to CO and CH4. As a result, compared to the reference sample of two-component system of TiO2 and ZIF-8 with a CO2 conversion rate of 12.5 μmol h−1 g−1, the new three-component photocatalyst exhibited a nearly 7-fold improvement in CO2 photocatalytic reduction performance with CO2 conversion reaching an outstanding value of 86.9 μmol h−1 g−1, highlighting the importance of rational heterojunction design in facilitating reactant adsorption, charge transfer and reaction processes in photocatalysis.
KW - 3-Component photocatalystis
KW - Artificial photosynthesis
KW - CO conversion
KW - Photocatalytic CO production
KW - Solar energy
KW - TiO
UR - https://www.scopus.com/pages/publications/85066240462
U2 - 10.1016/j.nanoen.2019.05.060
DO - 10.1016/j.nanoen.2019.05.060
M3 - Article
AN - SCOPUS:85066240462
SN - 2211-2855
VL - 62
SP - 426
EP - 433
JO - Nano Energy
JF - Nano Energy
ER -