TY - JOUR
T1 - Enabling highly efficient photocatalytic hydrogen generation and organics degradation
T2 - Via a perovskite solar cell-assisted semiconducting nanocomposite photoanode
AU - Liu, Xueqin
AU - Wang, Yang
AU - Cui, Xun
AU - Zhang, Meng
AU - Wang, Bing
AU - Rager, Matthew
AU - Shu, Zhu
AU - Yang, Yingkui
AU - Li, Zhen
AU - Lin, Zhiqun
N1 - Funding Information:
The work was supported by the National Natural Science Foundation of China (41502030), the Natural Science Foundation of Hubei Province of China (2017CFB190), the Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) (CUG170638), and the Open Foundation of Engineering Research Center of Nano- Geomaterials of Ministry of Education (NGM2017KF002, NGM2018KF017).
Publisher Copyright:
© 2019 The Royal Society of Chemistry.
PY - 2019
Y1 - 2019
N2 - Organometal trihalide perovskite solar cells (PSCs) have been widely recognized as a promising photovoltaic device due to their impressive set of outstanding excellent optoelectronic properties. However, the instability and intermittent energy output caused by the intensity fluctuation and/or the daily cycle of sunlight have motivated the direct application of PSCs in other energy fields. Here, we report an integrated solar-energy-conversion/water-splitting device comprising a single-junction PSC and CdS-decorated TiO 2 nanorod array (i.e., semiconducting CdS/TiO 2 NRA nanocomposite) photoanode with excellent photoelectrochemical (PEC) performance. Intriguingly, the introduction of PSC is found to effectively suppress the recombination of electrons and holes during the PEC catalytic process. As a result, the integrated device yields an overall solar-to-hydrogen efficiency of 1.54% and exhibits a six-fold increase in the degradation rate of methylene blue over that of the CdS/TiO 2 NRAs alone. As such, the crafting of a perovskite solar cell-assisted nanocomposite semiconductor photoanode may represent a viable route to alleviating the electron-hole recombination in water splitting and the degradation of organic pollutants, thus rendering the effective implementation of PSCs.
AB - Organometal trihalide perovskite solar cells (PSCs) have been widely recognized as a promising photovoltaic device due to their impressive set of outstanding excellent optoelectronic properties. However, the instability and intermittent energy output caused by the intensity fluctuation and/or the daily cycle of sunlight have motivated the direct application of PSCs in other energy fields. Here, we report an integrated solar-energy-conversion/water-splitting device comprising a single-junction PSC and CdS-decorated TiO 2 nanorod array (i.e., semiconducting CdS/TiO 2 NRA nanocomposite) photoanode with excellent photoelectrochemical (PEC) performance. Intriguingly, the introduction of PSC is found to effectively suppress the recombination of electrons and holes during the PEC catalytic process. As a result, the integrated device yields an overall solar-to-hydrogen efficiency of 1.54% and exhibits a six-fold increase in the degradation rate of methylene blue over that of the CdS/TiO 2 NRAs alone. As such, the crafting of a perovskite solar cell-assisted nanocomposite semiconductor photoanode may represent a viable route to alleviating the electron-hole recombination in water splitting and the degradation of organic pollutants, thus rendering the effective implementation of PSCs.
UR - http://www.scopus.com/inward/record.url?scp=85058857333&partnerID=8YFLogxK
U2 - 10.1039/c8ta08998a
DO - 10.1039/c8ta08998a
M3 - Article
AN - SCOPUS:85058857333
SN - 2050-7488
VL - 7
SP - 165
EP - 171
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
IS - 1
ER -