Ultrabroadband absorptive refractory plasmonics for photocatalytic hydrogen evolution reactions

IF 8.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Npg Asia Materials Pub Date : 2024-01-19 DOI:10.1038/s41427-023-00523-7

Myeongcheol Go, Inju Hong, Dasol Lee, Sanghoon Kim, Junho Jang, Keon-Woo Kim, Sangmin Shim, Kijung Yong, Junsuk Rho, Jin Kon Kim

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Abstract

As an environmentally friendly and renewable method for hydrogen production powered by solar energy, photocatalytic hydrogen evolution reactions (HERs) using broadband absorbers have received much attention. Here, we report the fabrication and characterization of an ultrabroadband absorber for the photocatalytic HER. The absorber is composed of titanium nitride and titanium dioxide heterostructures deposited onto a porous anodized aluminum oxide template. The absorber shows ultrabroadband absorption in both the visible and near-infrared regions (400–2500 nm), with averages of 99.1% and 80.1%, respectively. Additionally, the presence of the TiO₂ layer within the absorber extends the lifetime of the hot carriers by 2.7 times longer than that without the TiO₂ layer, enhancing the transfer of hot electrons and improving the efficiency of hydrogen production by 1.9 times. This novel ultrabroadband absorber has potential use in advanced photocatalytic HER applications, providing a sustainable and cost-effective route for hydrogen generation from solar energy.

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用于光催化氢进化反应的超宽带吸收性难熔等离子体

作为一种利用太阳能制氢的环保型可再生方法，使用宽带吸收器的光催化氢进化反应（HERs）受到了广泛关注。在此，我们报告了一种用于光催化氢进化反应的超宽带吸收器的制造和表征。该吸收器由沉积在多孔阳极氧化铝模板上的氮化钛和二氧化钛异质结构组成。该吸收器在可见光和近红外区域（400-2500 纳米）都显示出超宽带吸收，平均吸收率分别为 99.1% 和 80.1%。此外，吸收器中二氧化钛层的存在使热载流子的寿命比没有二氧化钛层的吸收器延长了 2.7 倍，从而增强了热电子的转移，并将制氢效率提高了 1.9 倍。这种新型超宽带吸收器可用于先进的光催化 HER 应用，为利用太阳能制氢提供了一条可持续且具有成本效益的途径。

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来源期刊

Npg Asia Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

15.40

自引率

1.00%

发文量

审稿时长

2 months

期刊介绍： NPG Asia Materials is an open access, international journal that publishes peer-reviewed review and primary research articles in the field of materials sciences. The journal has a global outlook and reach, with a base in the Asia-Pacific region to reflect the significant and growing output of materials research from this area. The target audience for NPG Asia Materials is scientists and researchers involved in materials research, covering a wide range of disciplines including physical and chemical sciences, biotechnology, and nanotechnology. The journal particularly welcomes high-quality articles from rapidly advancing areas that bridge the gap between materials science and engineering, as well as the classical disciplines of physics, chemistry, and biology. NPG Asia Materials is abstracted/indexed in Journal Citation Reports/Science Edition Web of Knowledge, Google Scholar, Chemical Abstract Services, Scopus, Ulrichsweb (ProQuest), and Scirus.