In this study, we report the use of NiP₂/TiO₂ as a photocatalyst for the transformation of methane (CH₄) to carbon monoxide (CO) and hydrogen (H₂) under UV–visible light irradiation. As a co-catalyst, NiP₂ can promote the charge separation of TiO₂ on the one hand, and can effectively promote the activation of O₂ to generate superoxide ions (O₂^–) on the other hand. O₂^–, as the main active species, cleaves CH₄ molecules to form methoxyl radical (•CH₃O). Under the influence of photogenerated holes, •CH₃O gradually undergoes oxidation to form an intermediate *COOH, which is subsequently converted to CO. Meantime, H⁺ is reduced to form H₂. Therefore, the production of CO and H₂ attained 267.5 and 72.4 μmol g^–1h⁻¹ for the NiP₂/TiO₂-2 photocatalyst with the optimal ratio, respectively. In fact, this research showcases the capability of NiP₂/TiO₂ as a remarkably effective and specific photocatalyst for transforming CH₄ into high-value commodities.

在这项研究中，我们报道了使用NiP ₂ /TiO _{2作为光催化剂，在紫外-可见光照射下将甲烷（CH 4} ）转化为一氧化碳（CO）和氢气（H ₂）。_{NiP 2}作为助催化剂，一方面可以促进TiO ₂的电荷分离，另一方面可以有效促进O ₂活化生成超氧离子(O ₂ ^{- )。}O ₂ ^-作为主要活性物质，裂解CH ₄分子形成甲氧基自由基(·CH ₃ O)。在光生空穴的影响下，•CH ₃O逐渐氧化形成中间体*COOH，随后转化为CO。同时，H ⁺被还原形成H ₂。因此，最佳配比的NiP ₂ /TiO _{2 -2 光催化剂的CO和H 2}产量分别达到267.5和72.4 μmol g ^–1 h ^{-1 。}事实上，这项研究展示了 NiP ₂ /TiO ₂作为一种非常有效和特定的光催化剂，可以将 CH ₄转化为高价值商品。