التفاصيل البيبلوغرافية
| العنوان: |
Hybrid 0D/2D edamame shaped ZnIn2S4 photoanode modified by Co-Pi and Pt for charge management towards efficient photoelectrochemical water splitting. |
| المؤلفون: |
Zhou, Miao1, Liu, Zhihua1, Song, Qinggong2, Li, Xifei3, Chen, Bowen1, Liu, Zhifeng1 tjulzf@163.com |
| المصدر: |
Applied Catalysis B: Environmental. May2019, Vol. 244, p188-196. 9p. |
| مصطلحات موضوعية: |
*PLATINUM, *PHOTOELECTROCHEMISTRY, *WATER electrolysis, *NANOPARTICLES, *HYDROTHERMAL synthesis |
| مستخلص: |
Graphical abstract Highlights • Edamame shaped ZnIn 2 S 4 film consisted of nanoflakes (2D) and nanoparticles (0D) on ITO substrate. • Design and fabricate a Co-Pi/ZnIn 2 S 4 /Pt photoanode for efficient PEC water splitting. • Edamame shaped ZnIn 2 S 4 nanostrctures contribute to enhanced light harvesting. • The spatial Co-Pi and Pt cocatalyst result in efficient reduced charge recombination at the surface and interface. • It can provide an avenue guidelines for photoelectrodes to realize efficient PEC water splitting. Abstract Charge separation and transport as well as light absorption are pivotal in determining the efficiency of solar water splitting devices. Herein, we have designed a novel edamame shaped ZnIn 2 S 4 nanostructures consisted of hybridized nanoflakes (2D) and nanoparticles (0D) on ITO conductive substrate through a simple hydrothermal method for PEC water splitting for the first time. The growth mechanism of 0D/2D ZnIn 2 S 4 is proposed and discussed in detail. The series of PEC measurements indicate that edamame shaped 0D/2D ZnIn 2 S 4 films exhibit relatively higher PEC activity (0.37 mA/cm2 at 1.23 V vs. RHE) than that of ZnIn 2 S 4 NFs and ZnIn 2 S 4 NPs due to the enhanced light absorption and efficient charge separation and transfer and increased active sites. Additionally, after selectively depositing Co-Pi cocatalyst and Pt NPs on the top and bottom sides of edamame shaped ZnIn 2 S 4 photoanodes, charge recombination at the surface and interface can be efficiently reduced. The spatial Co-Pi cocatalyst drives holes to flow to the surface, while the Pt NPs facilitate the electrons in the opposite directions. Thus, the integrated Co-Pi/ZnIn 2 S 4 /Pt equipment without any additional doping presents an increased photocurrent density with 0.91 mA/cm2 at 1.23 V vs. RHE. This work highlights that edamame shaped ZnIn 2 S 4 can be a promising candidate for photoelectrochemical behavior and rout such as coupling of Co-Pi and Pt co-catalysts on photoanodes have an interfacial electric field can provide a new avenues to design efficient PEC devices in future. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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