Keshipour Sajjad, Eyvari-Ashnak Faezeh
Department of Nanotechnology, Faculty of Chemistry, Urmia University, Urmia 57179-44514, Iran.
ACS Omega. 2023 Oct 25;8(44):41624-41632. doi: 10.1021/acsomega.3c05801. eCollection 2023 Nov 7.
Water splitting is considered one of the worthy approaches to generate hydrogen as a green fuel with diverse applications. Promoting this reaction with the photocatalytic strategy enjoys a free source of solar energy, without the use of expensive instruments. In this research, gold nanoparticles and cobalt(II)-phthalocyanine were deposited on nitrogen-doped carbon, obtained from chitosan, to afford a photocatalytic water splitting at the rate of 792 mol mol h. Gold as the catalyst in contact with cobalt(II)-phthalocyanine as the sensitizer and nitrogen-doped carbon as the support/semiconductor provided a desired heterojunction for the photocatalytic purpose. The nanocomposite showed remarkable light harvesting in the region of visible light with a band gap of 2.01 eV. While a facile protocol to the synthesis of the mentioned photocatalyst by a simple thermal treatment of cobalt(II)-phthalocyanine and chitosan could be invaluable, this research pointed out the significance of cobalt(II)-phthalocyanine as the sensitizer in the gold photocatalytic transformations.
水分解被认为是产生氢气作为具有多种应用的绿色燃料的有价值方法之一。用光催化策略促进这种反应可利用免费的太阳能，无需使用昂贵的仪器。在本研究中，金纳米颗粒和钴（II）-酞菁沉积在由壳聚糖制得的氮掺杂碳上，以792 μmol mol⁻¹ h⁻¹的速率实现光催化水分解。金作为催化剂与作为敏化剂的钴（II）-酞菁以及作为载体/半导体的氮掺杂碳接触，为光催化目的提供了所需的异质结。该纳米复合材料在可见光区域表现出显著的光捕获能力，带隙为2.01 eV。虽然通过对钴（II）-酞菁和壳聚糖进行简单热处理来合成上述光催化剂的简便方法可能非常有价值，但本研究指出了钴（II）-酞菁作为敏化剂在金光催化转化中的重要性。
