Promising pyro-photo-electric catalysis in NaNbO3 via integrating solar and cold-hot alternation energy in pyroelectric-assisted photoelectrochemical system
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Article number | 105485 |
Journal / Publication | Nano Energy |
Volume | 79 |
Publication status | Published - Jan 2021 |
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Abstract
Herein, a novel catalytic process named “pyro-photo-electric catalysis” is firstly realized by combining pyroelectric catalysis (PREC) and photoelectrochemical (PEC) catalysis based on NaNbO3 nanocubes. The films show enhanced photocurrent density of 0.37 mA/cm2 at 1.23 V vs. a reversible hydrogen electrode (RHE) under 20–50 °C heating-cooling cycles and illumination, which is 3.1 and 1.6 times higher than that of PREC (0.09 mA/cm2) and PEC catalysis (0.14 mA/cm2). It is found that the higher catalysis efficiency can be the result of increased carrier concentration, including photogenerated carriers and pyro-generated carriers, and accelerated charge separation and transfer due to the change in band alignment at NaNbO3/electrolyte caused by the imbalance of polarization charges and the induced pyroelectric potential. This study confirms the feasibility of pyroelectric-assisted PEC performance and realizes the energy harvesting of cold-hot alternation thermal energy and solar energy. It also provides insights into the rational design for designing new and ecofriendly photoelectrodes with efficient PEC water splitting.
Research Area(s)
- NaNbO3, Photoelectrochemical, Pyro-photo-electric catalysis, Pyroelectric effect
Citation Format(s)
Promising pyro-photo-electric catalysis in NaNbO3 via integrating solar and cold-hot alternation energy in pyroelectric-assisted photoelectrochemical system. / Zhang, Shaoce; Zhang, Bo; Chen, Dong; Guo, Zhengang; Ruan, Mengnan; Liu, Zhifeng.
In: Nano Energy, Vol. 79, 105485, 01.2021.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review