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Probing Activity Enhancement of Photothermal Catalyst under Near-Infrared Irradiation
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2021-03-31 , DOI: 10.1021/acs.jpclett.1c00373 Jiangbo Xi 1, 2 , Jie Huang 1 , Deng Wang 1 , Liangsong Wen 1 , Jufang Hao 3 , Baojiang He 4 , Jun Chen 1 , Zheng-Wu Bai 1
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2021-03-31 , DOI: 10.1021/acs.jpclett.1c00373 Jiangbo Xi 1, 2 , Jie Huang 1 , Deng Wang 1 , Liangsong Wen 1 , Jufang Hao 3 , Baojiang He 4 , Jun Chen 1 , Zheng-Wu Bai 1
Affiliation
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Exploring highly efficient catalysts with excellent photothermal conversion and further unveiling their catalytic mechanism are of significant importance for photothermal catalysis technologies, but there remain grand challenges to these activities. Herein, we fabricate a nest-like photothermal nanocatalyst with Pd decorated on a N-doped carbon functionalized Bi2S3 nanosphere (Bi2S3@NC@Pd). Given its well-dispersed ultrafine Pd nanoparticles and the excellent photothermal heating ability of support material, the Bi2S3@NC@Pd composite exhibits a superior activity and photothermal conversion property to commercial Pd/C catalyst for hydrogenation of organic dyes upon exposure to near-infrared (NIR) light irradiation. In addition, the photothermal effect (temperature rise) and activity enhancement of the heterogeneous catalysis system are further probed by comparing the reaction rate with and without the NIR light irradiation. Furthermore, the catalytic behaviors of the Bi2S3@NC@Pd catalyst under conventional and photothermal heating are investigated at the same reaction temperature. This work not only improves our fundamental understanding of the catalytic behavior in heterogeneous liquid–solid reaction systems under near-infrared irradiation but also may promote the design of catalysts with photothermally promoted activity.
中文翻译：
探测近红外辐射下光热催化剂活性的提高
探索具有优异光热转化率的高效催化剂并进一步揭示其催化机理对光热催化技术具有重要意义，但这些活动仍然面临巨大挑战。本文中，我们在N掺杂的碳官能化Bi 2 S 3纳米球（Bi 2 S 3 @ NC @ Pd）上装饰了Pd的巢状光热纳米催化剂。由于其分散良好的超细Pd纳米颗粒和出色的支撑材料光热加热能力，Bi 2 S 3@ NC @ Pd复合材料在暴露于近红外（NIR）光照射下对有机染料的氢化显示出优于商用Pd / C催化剂的优异活性和光热转化性能。另外，通过比较有和没有近红外光照射时的反应速率，进一步探讨了多相催化体系的光热效应（温度升高）和活性增强。此外，Bi 2 S 3的催化行为在相同的反应温度下研究了常规加热和光热加热下的@ NC @ Pd催化剂。这项工作不仅提高了我们对近红外辐射下非均相液-固反应体系催化行为的基本认识，而且可能促进光热活性催化剂的设计。
更新日期：2021-04-08
中文翻译：
探测近红外辐射下光热催化剂活性的提高
探索具有优异光热转化率的高效催化剂并进一步揭示其催化机理对光热催化技术具有重要意义，但这些活动仍然面临巨大挑战。本文中，我们在N掺杂的碳官能化Bi 2 S 3纳米球（Bi 2 S 3 @ NC @ Pd）上装饰了Pd的巢状光热纳米催化剂。由于其分散良好的超细Pd纳米颗粒和出色的支撑材料光热加热能力，Bi 2 S 3@ NC @ Pd复合材料在暴露于近红外（NIR）光照射下对有机染料的氢化显示出优于商用Pd / C催化剂的优异活性和光热转化性能。另外，通过比较有和没有近红外光照射时的反应速率，进一步探讨了多相催化体系的光热效应（温度升高）和活性增强。此外，Bi 2 S 3的催化行为在相同的反应温度下研究了常规加热和光热加热下的@ NC @ Pd催化剂。这项工作不仅提高了我们对近红外辐射下非均相液-固反应体系催化行为的基本认识，而且可能促进光热活性催化剂的设计。
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