MAX phase, a layered ternary carbide/nitride, displays both ceramic and metallic properties, which has significantly attracted the materials research. In this work, Cr₂AlC MAX phase powder with high purity was fabricated via a facile and cost-effective pressure-less sintering methodology and utilized for photocatalytic degradation of different organic pollutants for the first time. Various characterization techniques were used for confirming the morphological and other physico-chemical properties of the catalyst. Cr₂AlC MAX phase with a low band gap of 1.28 eV has shown 99% efficiency in the degradation of malachite green, an organic pollutant under visible light irradiation. The scavenger studies conclude that, $O_2^{•-}$and h⁺ as the active species during the photocatalytic reaction. Furthermore, the kinetic study revealed that the reaction obeys pseudo-first-order kinetics and can be reused for four cycles without losing the activity. This novel approach can give new insight into the potential application of MAX phase materials in the field of wastewater treatment under visible light irradiation.

MAX 相是一种层状三元碳化物/氮化物，同时具有陶瓷和金属特性，这极大地吸引了材料研究。在这项工作中，通过简便且具有成本效益的无压烧结方法制备了高纯度的Cr ₂ AlC MAX 相粉末，并首次用于光催化降解不同的有机污染物。各种表征技术用于确认催化剂的形态和其他物理化学性质。具有 1.28 eV 低带隙的Cr ₂ AlC MAX 相在可见光照射下降解孔雀石绿的效率为 99%。清道夫研究的结论是，${哦}_2^{•-}$h ⁺作为光催化反应过程中的活性物种。此外，动力学研究表明该反应遵循伪一级动力学，可以重复使用四个循环而不会失去活性。这种新颖的方法可以为 MAX 相材料在可见光照射下的废水处理领域的潜在应用提供新的见解。