Enhanced infrared-induced water oxidation by one-pot synthesized CoTi-Nanorods as highly infrared responsive photocatalyst

被引：14

作者：

Mostafa, Mohsen S. ^{[1
,2
]}

Lan, Chen ^{[1
]}

Betiha, Mohamed A. ^{[2
,3
]}

Zhang, Ruiyi ^{[1
]}

Gaoa, Ya ^{[1
]}

Ge, Guanglu ^{[1
]}

机构：

[1] Natl Ctr Nanosci & Technol, CAS Key Lab Standardizat & Measurement Nanotechno, CAS Ctr Excellence Nanosci, Beijing 100190, Peoples R China

[2] Egyptian Petr Res Inst, Cairo 11727, Egypt

[3] Cairo Univ, Egypt Nanotechnol Ctr, El Shiekh Zayed 12588, Egypt

来源：

JOURNAL OF POWER SOURCES | 2020年 / 464卷

关键词：

Cobalt titanate layered double hydroxide; Nanorods; Photocatalysis; Water splitting; Infrared responsive; LAYERED DOUBLE HYDROXIDE; PHYSICOCHEMICAL PROPERTIES; EFFICIENT PHOTOCATALYSTS; NANOSTRUCTURED MATERIALS; HYDROGEN-PRODUCTION; ADSORPTIVE REMOVAL; TIO2; HETEROJUNCTION; DEGRADATION; NANOSHEETS;

D O I：

10.1016/j.jpowsour.2020.228176

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Infrared (IR) radiation is available and valuable energy forming more than 50% of sunlight and water oxidation is a challenge for sunlight-induced water splitting. The demand of the world for green energy production and environmental remediation is workable to formulate active IR-harvest. Herein, we introduce a one-pot route for the synthesis and its first water-splitting application of novel cobalt titanate nanorods layered double hydroxide (CTN-LDH) via chloride-based precursors under acidic conditions to grow ultra-thin nanorods (20-50 nm) by longitudinal propagation of titanium hexachloride [TiCl6](2-) intermediate. Practically, CTN-LDH alone can achieve the highest oxygen evolution (OE) rate, about 5300 mu mol g(-1)h(-1) under full light or IR-irradiations without noble metal loading. The high IR-photocatalytic activity of CTN-LDH can be attributed to its narrow bandgap (1.4 eV) and specific nanostructure that improves the active site distribution, where IR light-harvesting and transferring by/through CTN-LDH units and sharply suppresses the recombination of the photoexcited electrons/holes pairs. The experimental results show that CTN-LDH owns high structure/photocatalytic stability as a promising water splitter under IR irradiation.

引用

页数：9

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