In:
Journal of Materials Chemistry A, Royal Society of Chemistry (RSC), Vol. 10, No. 6 ( 2022), p. 2924-2931
Abstract:
Visible-light-driven synthesis of syngas has been widely regarded as an ingenious strategy to realize the comprehensive utilization of CO 2 . Herein, a cooperative strategy based on S-atom substitution and morphology regulation was adopted to design ultrafine amorphous InS x O y nanowires (NWs) for boosting the photocatalytic production of the CO/H 2 mixture. Surprisingly, the crystallinity and morphology of the products could be tuned easily by varying the amount of thiourea, which in turn influenced their photocatalytic activity. The as-prepared InS x O y NWs demonstrated remarkable production rates of 336 and 812 μmol g −1 h −1 for CO and H 2 , respectively, one of the most competitive performances for In-based materials. In situ Fourier transform infrared spectra confirmed that InS x O y NWs with strong CO 2 capturing ability were conducive to the formation of the COOH* intermediate, accelerating the photoreduction efficiency significantly. Enhanced photocatalytic activity was ascribed to the synergistic effects of the distinctive ultrafine structure and S-atom substitution, which not only decreased the band gap of indium oxide but also promoted the charge–hole separation/transportation on the catalyst surface. This work emphasized a facile technique regarding heteroatom substitution and morphology regulation, inspiring an alternative pathway for fabricating photocatalysts with high-activity toward solar-driven syngas production.
Type of Medium:
Online Resource
ISSN:
2050-7488
,
2050-7496
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
2702232-8
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