Copper octacarboxyphthalocyanine as sensitizer of graphitic carbon nitride for efficient dye degradation under visible light irradiation
Copper octacarboxyphthalocyanine as sensitizer of graphitic carbon nitride for efficient dye degradation under visible light irradiation
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DOI：
10.1016/j.apcata.2018.06.036
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发表时间：
2018-08
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通讯作者：
S. Ouedraogo;B. Chouchene;Christophe Desmarets;T. Gries;L. Balan;R. Fournet;G. Medjahdi;K. Bayo;R. Schneider
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文献类型：
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作者：
S. Ouedraogo;B. Chouchene;Christophe Desmarets;T. Gries;L. Balan;R. Fournet;G. Medjahdi;K. Bayo;R. Schneider
在本文中，八羧基酞菁铜（CuPc）被证明是一种有效的石墨氮化碳（g-CN）光敏剂，可在可见光照射下降解橙II或亚甲基蓝等染料。紫外可见吸收、光致发光和光电流测量表明，CuPc 不仅可以将吸收扩展到高达 1000 nm 的波长，而且还可以提高电荷转移效率。 CuPc/g-CN纳米杂化物的高光催化效率源于CuPc的羧酸基团与g-CN之间的强缔合，有利于光激发电子从CuPc转移到g-CN。 CuPc/g-CN催化剂稳定，可重复使用五次而不会显着损失活性，因此在可见光或近红外照射下的废水处理或制氢等光催化应用中具有很高的潜力。
In this paper, copper octacarboxyphthalocyanine (CuPc) was demonstrated to be an efficient photosensitizer of graphitic carbon nitride (g-CN) for the degradation of dyes like Orange II or Methylene Blue under visible light irradiation. UV–vis absorption, photoluminescence and photocurrent measurements demonstrate that CuPc not only allows to extend the absorption to wavelengths up to 1000 nm but also enhances the charge-transfer efficiency. The high photocatalytic efficiency of CuPc/g-CN nanohybrids originates from the strong association between the carboxylic acid groups of CuPc with g-CN which favor the transfer of photo-excited electrons from CuPc to g-CN. The CuPc/g-CN catalyst is stable, can be reused up to five times without significant loss of activity and is therefore of high potential for photocatalytic applications like wastewater treatment or hydrogen production under visible or near-infrared irradiation.