当前位置:
X-MOL 学术
›
Dalton Trans.
›
论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
High light harvesting efficiency CuInS2 quantum dots/TiO2/MoS2 photocatalysts for enhanced visible light photocatalytic H2 production†
Dalton Transactions ( IF 4 ) Pub Date : 2018-03-19 00:00:00 , DOI: 10.1039/c8dt00356d Yong-Jun Yuan 1, 2, 3, 4 , Gaoliang Fang 1, 2, 3, 4 , Daqin Chen 1, 2, 3, 4 , Yanwei Huang 1, 2, 3, 4 , Ling-Xia Yang 4, 5, 6, 7, 8 , Da-Peng Cao 4, 9, 10 , Jingjing Wang 4, 11, 12, 13 , Zhen-Tao Yu 4, 5, 6, 7, 8 , Zhi-Gang Zou 4, 5, 6, 7, 8
Dalton Transactions ( IF 4 ) Pub Date : 2018-03-19 00:00:00 , DOI: 10.1039/c8dt00356d Yong-Jun Yuan 1, 2, 3, 4 , Gaoliang Fang 1, 2, 3, 4 , Daqin Chen 1, 2, 3, 4 , Yanwei Huang 1, 2, 3, 4 , Ling-Xia Yang 4, 5, 6, 7, 8 , Da-Peng Cao 4, 9, 10 , Jingjing Wang 4, 11, 12, 13 , Zhen-Tao Yu 4, 5, 6, 7, 8 , Zhi-Gang Zou 4, 5, 6, 7, 8
Affiliation
Expanding the photoresponse range of TiO2-based photocatalysts is of great interest for photocatalytic H2 production. Herein, noble-metal-free CuInS2 quantum dots were employed as a novel inorganic dye to expand the visible light absorption of TiO2/MoS2 for solar H2 generation. The as-prepared CuInS2/TiO2/MoS2 photocatalysts exhibit broad absorption from the ultraviolet to near-infrared region. Under visible light irradiation (λ > 420 nm), the CuInS2/TiO2/MoS2 photocatalyst with 0.6 mmol g−1 CuInS2 and 0.5 wt% MoS2 showed the highest H2 evolution rate with a value of 1034 μmol h−1 g−1. Moreover, a considerable H2 evolution rate of 141 μmol h−1 g−1 was obtained under the irradiation of the optimized CuInS2/TiO2/MoS2 photocatalyst with >500 nm light. The reaction mechanism of the CuInS2/TiO2/MoS2 photocatalyst for photocatalytic H2 evolution was investigated in detail by photoluminescence decay study, and the results showed that the photoexcited electrons of CuInS2 can be transferred efficiently through TiO2 to MoS2 and then react with the absorbed protons to generate H2. The reported sensitization strategy tremendously improves the visible light absorption capacity and the photocatalytic performance of TiO2-based photocatalysts.
中文翻译:
高集光效率的CuInS 2量子点/ TiO 2 / MoS 2光催化剂可增强可见光光催化H 2的产生†
扩大基于TiO 2的光催化剂的光响应范围对于光催化H 2的生产非常重要。在此,无贵金属的CuInS 2量子点被用作新型无机染料,以扩展用于太阳H 2产生的TiO 2 / MoS 2的可见光吸收。所制备的CuInS 2 / TiO 2 / MoS 2光催化剂表现出从紫外到近红外区域的广泛吸收。在可见光照射下(λ > 420 nm),具有0.6 mmol g -1的CuInS 2 / TiO 2 / MoS 2光催化剂CuInS 2和0.5wt%的MoS 2表现出最高的H 2析出速率,值为1034μmolh -1 g -1。此外,在优化的CuInS 2 / TiO 2 / MoS 2光催化剂以> 500 nm的光照射下,获得了相当高的H 2析出速率为141μmolh -1 g -1。CuInS 2 / TiO 2 / MoS 2光催化剂对H 2光催化的反应机理通过光致发光衰变研究详细研究了其演化,结果表明,CuInS 2的光激发电子可以通过TiO 2有效转移到MoS 2,然后与吸收的质子反应生成H 2。报道的敏化策略极大地提高了TiO 2基光催化剂的可见光吸收能力和光催化性能。
更新日期:2018-03-19
中文翻译:
高集光效率的CuInS 2量子点/ TiO 2 / MoS 2光催化剂可增强可见光光催化H 2的产生†
扩大基于TiO 2的光催化剂的光响应范围对于光催化H 2的生产非常重要。在此,无贵金属的CuInS 2量子点被用作新型无机染料,以扩展用于太阳H 2产生的TiO 2 / MoS 2的可见光吸收。所制备的CuInS 2 / TiO 2 / MoS 2光催化剂表现出从紫外到近红外区域的广泛吸收。在可见光照射下(λ > 420 nm),具有0.6 mmol g -1的CuInS 2 / TiO 2 / MoS 2光催化剂CuInS 2和0.5wt%的MoS 2表现出最高的H 2析出速率,值为1034μmolh -1 g -1。此外,在优化的CuInS 2 / TiO 2 / MoS 2光催化剂以> 500 nm的光照射下,获得了相当高的H 2析出速率为141μmolh -1 g -1。CuInS 2 / TiO 2 / MoS 2光催化剂对H 2光催化的反应机理通过光致发光衰变研究详细研究了其演化,结果表明,CuInS 2的光激发电子可以通过TiO 2有效转移到MoS 2,然后与吸收的质子反应生成H 2。报道的敏化策略极大地提高了TiO 2基光催化剂的可见光吸收能力和光催化性能。