Photo-catalyst plays a vital role in generating renewable energy by converting light energy into chemical energy. Recent advancement in the field of sensitization of metal oxide nanoparticles as a photo-catalyst with organic conducting polymers especially polyaniline (PANI) to enhance their photocatalytic properties have been investigated. This review article focuses on progress made in the field of photo-catalysis using PANI with different metal oxides nanoparticles and their nanocomposites in the last three decades. The mechanism of action of photo-catalysis and enhancement in the photocatalytic property of metal oxide nanoparticles are discussed in detail. This review article will prove very beneficial in the development of advanced functional conducting polymer-based nanocomposite material having a very high photocatalytic property to be used in splitting, purification of water, and decomposition of organic dyes.

光催化剂通过将光能转化为化学能，在产生可再生能源方面起着至关重要的作用。已经研究了在金属氧化物纳米颗粒作为光催化剂的光敏化领域中的最新进展，其中该光催化剂被有机导电聚合物，尤其是聚苯胺（PANI）增强了其光催化性能。这篇综述文章重点介绍了过去三十年来使用PANI与不同的金属氧化物纳米颗粒及其纳米复合材料进行光催化领域的进展。详细讨论了光催化作用机理和增强金属氧化物纳米粒子的光催化性能。