Facile synthesis of Bi2S3 nanosheet/Zr:Fe2O3 nanorod heterojunction and effect of Ag interlayer on the change transport and photoelectrochemical stability

Publication date: Available online 3 November 2018Source: Journal of Industrial and Engineering ChemistryAuthor(s): Mahadeo A. Mahadik, Jin Woo Park, Weon-Sik Chae, Sun Hee Choi, Hee-Suk Chung, Min Cho, Jum Suk JangAbstractIn this work, the hydrothermal approach has been used to prepare and control the morphology of Bi2S3 nanosheet (NS)/Zr doped Fe2O3 nanorod (NR) heterojunction grown on fluorine doped tin oxide (FTO) phoptoelectrodes. The effect of morphology of Bi2S3 NS was examined by comparing the photocatalytic activity of Zr:Fe2O3 nanorod with synthesized heterojunctions. This novel heterojunction photoanode exhibits the light harvesting, the photoinduced electron-hole separation and yielding a maximum photocurrent density of ∼1.27 mA cm−2 at −0.4 V vs. Ag/AgCl under one sun illumination. Bi2S3 NS on surface of the Zr:Fe2O3 NR will act as the active material which shows the dramatic improvement in photocurrent generation. Further, effect of silver interlayer on the interface properties of Bi2S3 NS/Zr:Fe2O3 NR heterojunction was also studied. The results indicated that the silver interlayer reduces charge recombination at interface of Bi2S3 and Zr:Fe2O3. Also, the surface plasmon resonance of Ag and controlled morphology enhances the performance (1.5 mA cm−2 at −0.4 V) as well as improves the stability of Bi2S3/Zr:Fe2O3 heterojunction photoelectrode. This unique design of the nanoarchitecture provides an attractive pathway for the ...
Source: Journal of Industrial and Engineering Chemistry - Category: Chemistry Source Type: research