W18O49/铝掺杂SrTiO3 S型异质结在LSPR效应辅助下实现全光谱太阳光驱动的光催化产氢

引用本文: 蒋金辉, 孙佳琦, 陈咏一, 张磊, 董鹏玉. W₁₈O₄₉/铝掺杂SrTiO₃ S型异质结在LSPR效应辅助下实现全光谱太阳光驱动的光催化产氢[J]. 物理化学学报, 2025, 41(11): 100145. doi: 10.1016/j.actphy.2025.100145 shu

Citation: Jinhui Jiang, Jiaqi Sun, Yongyi Chen, Lei Zhang, Pengyu Dong. W₁₈O₄₉/Al-doped SrTiO₃ S-scheme heterojunction aided by the LSPR effect for full-spectrum solar light-driven photocatalytic hydrogen evolution[J]. Acta Physico-Chimica Sinica, 2025, 41(11): 100145. doi: 10.1016/j.actphy.2025.100145 shu

W₁₈O₄₉/铝掺杂SrTiO₃ S型异质结在LSPR效应辅助下实现全光谱太阳光驱动的光催化产氢

蒋金辉 ^{1, †,} ,
孙佳琦 ^{1, †,} ,
陈咏一 ^{1, 2,} ,
张磊 ^{1, 2,} ,
董鹏玉 ^{1,
,}

1.
盐城工学院, 江苏省新型环保重点实验室, 江苏盐城 224051
2.
盐城工学院材料科学与工程学院, 江苏省生态环境材料重点实验室, 江苏盐城 224051

通讯作者: 董鹏玉, dongpy11@gmail.com

基金项目:
国家自然科学基金 21403184

中国江苏省高校自然科学研究基金 22KJA430008

摘要: 开发具有全光谱响应的高效光催化剂用于制氢具有重要意义。为了实现全光谱太阳光驱动的光催化，W₁₈O₄₉由于局域表面等离子体共振(LSPR)效应，在捕获可见光和近红外(NIR)光方面表现良好。然而，W₁₈O₄₉的光催化产氢活性非常低，需要进行改性。在本研究中，采用简单的原位溶剂热合成方法制备了Al掺杂的SrTiO₃ (ASTO)/W₁₈O₄₉ S型异质结。得益于更强的载流子分离、更快的电子传输和强大的氧化还原能力，10% ASTO/W₁₈O₄₉ S型异质结表现出最高的全光谱太阳光驱动光催化产氢速率，分别是纯ASTO和W₁₈O₄₉的17.5倍和27.6倍。W₁₈O₄₉中丰富的氧空位产生的LSPR效应将光吸收范围扩展到NIR区域，显著提高了其对全光谱太阳光的利用效率。此外，由于W₁₈O₄₉的LSPR效应，它可以产生等离子体高能“热电子”，并使其转移到ASTO/W₁₈O₄₉异质结中ASTO的导带(CB)，从而促进光生载流子的分离和迁移，并大大增加ASTO的CB上参与光催化产氢反应的光生电子和“热电子”的数量，与单一组分的W₁₈O₄₉和ASTO相比，表现出优异的光催化产氢性能。

关键词:

English

W₁₈O₄₉/Al-doped SrTiO₃ S-scheme heterojunction aided by the LSPR effect for full-spectrum solar light-driven photocatalytic hydrogen evolution

1.
Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, Jiangsu Province, China
2.
Key Laboratory for Ecological-Environment Materials of Jiangsu Province, School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, Jiangsu Province, China

Corresponding author: Pengyu Dong, Email: dongpy11@gmail.com

Received Date: 20 June 2025
Accepted Date: 31 July 2025
Revised Date: 30 July 2025
Available Online: 15 November 2025
Fund Project:
the National Natural Science Foundation of China

the Natural Science Foundation of the Jiangsu Higher Education Institutions of China
^†These two authors contributed equally to this work (J.J. and J.S.).

Abstract: Developing highly efficient photocatalysts with a full-spectrum response for hydrogen production is of great significance. To achieve full-spectrum solar-light-driven photocatalysis, W₁₈O₄₉ works well for capturing visible and near-infrared (NIR) light due to the localized surface plasmon resonances (LSPR) effect. Nevertheless, W₁₈O₄₉ has very little photocatalytic hydrogen generation activity, which needs to be modified. In this work, a simple in situ solvothermal synthesis method was conducted to prepare Al-doped SrTiO₃ (ASTO)/W₁₈O₄₉ S-scheme heterojunction. Benefiting from more powerful carrier separation, faster electron transport, and strong redox capacity, the 10% ASTO/W₁₈O₄₉ S-scheme heterojunction exhibits the highest full-spectrum solar-light-driven photocatalytic hydrogen rate, which is 17.5 and 27.6 times that of pure ASTO and W₁₈O₄₉, respectively. The LSPR effect derived from W₁₈O₄₉ with abundant oxygen vacancies extends the range of light absorption to the NIR region, which significantly improves its utilization efficiency of full-spectrum sunlight. Moreover, due to the LSPR effect of W₁₈O₄₉, it could produce plasmonic high-energy "hot electrons" and allow them to transfer to the conduction band (CB) of ASTO in the ASTO/W₁₈O₄₉ heterojunction, which could promote the separation and migration of photoinduced carriers and greatly increase the number of electrons containing photogenerated electrons and "hot electrons" on the CB of ASTO that can participate in photocatalytic hydrogen production reaction, exhibiting excellent photocatalytic hydrogen evolution performance compared to single-component W₁₈O₄₉ and ASTO.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

W₁₈O₄₉/铝掺杂SrTiO₃ S型异质结在LSPR效应辅助下实现全光谱太阳光驱动的光催化产氢

通讯作者: 董鹏玉, dongpy11@gmail.com

English

W₁₈O₄₉/Al-doped SrTiO₃ S-scheme heterojunction aided by the LSPR effect for full-spectrum solar light-driven photocatalytic hydrogen evolution

Corresponding author: Pengyu Dong, Email: dongpy11@gmail.com

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