Effect of alkali metal cation doping in graphitic carbon nitride towards photocatalytic generation of hydrogen peroxide under direct sunlight

IF 3.4 3区化学 Q2 CHEMISTRY, PHYSICAL Catalysis Communications Pub Date : 2024-02-01 DOI:10.1016/j.catcom.2024.106909

P. Haripriya , T. Anjana , K. Sreelakshmi , Nikhil T. Madhu , M. Anjana , P.V. Suneesh , Darbha V. Ravi Kumar

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Abstract

H₂O_2, a powerful oxidant with a vast number of industrial applications, is being synthesized by the energy intensive anthraquinone process. Recently, H₂O₂ has been synthesized using H₂O and O₂ by photocatalysis. Graphitic carbon nitride (g-C₃N₄) is a popular low-cost photocatalyst that is known to produce H₂O₂. However, the properties g-C₃N₄ needs to be tailored to improve the yield of H₂O₂. We discuss such a modification of g-C₃N₄ by alkali metal cation doping. Among the Li⁺, Na⁺ and K⁺ ions, doping of 10 wt% of K⁺ in g-C₃N₄ increase the yield of H₂O₂ (200 μmol g⁻¹ h⁻¹) by 2.5 times as compared un-doped g-C₃N₄ under natural sunlight.

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氮化石墨碳中掺杂碱金属阳离子对阳光直射下光催化生成过氧化氢的影响

HO 是一种强大的氧化剂，在工业上应用广泛，目前是通过高能耗的蒽醌工艺合成的。最近，人们通过光催化技术利用 HO 和 O 合成了 HO。氮化石墨碳（g-CN）是一种常用的低成本光催化剂，已知可以产生 HO。然而，需要对 g-CN 的特性进行调整，以提高 HO 的产量。我们讨论了通过掺杂碱金属阳离子对 g-CN 进行改性的问题。在 Li、Na 和 K 离子中，在 g-CN 中掺入 10 wt% 的 K，可将自然阳光下的 HO 产率（200 μmol g h）提高 2.5 倍。

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来源期刊

Catalysis Communications 化学-物理化学

CiteScore

6.20

自引率

2.70%

发文量

183

审稿时长

46 days

期刊介绍： Catalysis Communications aims to provide rapid publication of significant, novel, and timely research results homogeneous, heterogeneous, and enzymatic catalysis.