TY - JOUR
T1 - Structurally designable Bi2S3/P-doped ZnO S-scheme photothermal metamaterial enhanced CO2 reduction
AU - Pan, Longkai
AU - Yao, Li
AU - Mei, Hui
AU - Liu, Hongxia
AU - Jin, Zhipeng
AU - Zhou, Shixiang
AU - Zhang, Minggang
AU - Zhu, Gangqiang
AU - Cheng, Laifei
AU - Zhang, Litong
N1 - Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/5/1
Y1 - 2023/5/1
N2 - In this study, a novel 3D Bi2S3/P-ZnO S-scheme gyroid metamaterial was prepared by 3D printing and the hydrothermal method. The unique gyroid macrostructure and nanoarray microstructure offer a large volume of active sites for the photothermal catalytic reaction, thus improving the overall utilization rate of light. ZnO obtained by sintering the precursor produces oxygen vacancies, primarily due to P doping. This enables it to have a photothermal effect. After loading Bi2S3, the photothermal effect of P-ZnO and Bi2S3 is coupled, further increasing the surface temperature of composite structure and speeding up the reaction rate. P-ZnO and Bi2S3 formed a S-scheme heterojunction, promoting the separation and transfer of photogenerated carriers. Under simulated sunlight, the CO and CH4 yield of Bi2S3/P-ZnO S-scheme gyroid metamaterials are 8.87 and 1.49 μmol h−1. These are 3.45 times and 4.65 times of P-ZnO gyroid structure, respectively. Through SEM, TEM, XPS, ESR and in-situ FTIR characterizations, the transfer paths of photogenerated carriers between heterojunctions were revealed, and the reaction paths of photothermal catalytic CO2 reduction were explored. The co-design of 3D structure and material allows for a novel concept for further improving photothermal catalytic performance.
AB - In this study, a novel 3D Bi2S3/P-ZnO S-scheme gyroid metamaterial was prepared by 3D printing and the hydrothermal method. The unique gyroid macrostructure and nanoarray microstructure offer a large volume of active sites for the photothermal catalytic reaction, thus improving the overall utilization rate of light. ZnO obtained by sintering the precursor produces oxygen vacancies, primarily due to P doping. This enables it to have a photothermal effect. After loading Bi2S3, the photothermal effect of P-ZnO and Bi2S3 is coupled, further increasing the surface temperature of composite structure and speeding up the reaction rate. P-ZnO and Bi2S3 formed a S-scheme heterojunction, promoting the separation and transfer of photogenerated carriers. Under simulated sunlight, the CO and CH4 yield of Bi2S3/P-ZnO S-scheme gyroid metamaterials are 8.87 and 1.49 μmol h−1. These are 3.45 times and 4.65 times of P-ZnO gyroid structure, respectively. Through SEM, TEM, XPS, ESR and in-situ FTIR characterizations, the transfer paths of photogenerated carriers between heterojunctions were revealed, and the reaction paths of photothermal catalytic CO2 reduction were explored. The co-design of 3D structure and material allows for a novel concept for further improving photothermal catalytic performance.
KW - 3D metamaterials
KW - CO reduction
KW - Photothermal effect
KW - S-scheme
KW - ZnO precursor slurry
UR - http://www.scopus.com/inward/record.url?scp=85148671019&partnerID=8YFLogxK
U2 - 10.1016/j.seppur.2023.123365
DO - 10.1016/j.seppur.2023.123365
M3 - 文章
AN - SCOPUS:85148671019
SN - 1383-5866
VL - 312
JO - Separation and Purification Technology
JF - Separation and Purification Technology
M1 - 123365
ER -