The pristine polycarbazole (PCz) and polycarbazole (PCz) -tin oxide (SnO₂) nanocomposite (PCT) were synthesized via facile in-situ polymerization method and analyzed by various advanced techniques. The crystal structure is identified by PXRD and disclosed the primitive tetragonal structure of SnO_2. The annealed PCT exhibited uniform spherical like morphology with low degree of aggregation. The HRTEM analysis confirmed the presence of nanocomposite with the particle size of 7.6 nm for the annealed PCT. The surface area measured from the BET analysis for the annealed PCT is 7.9 m²/g which is 1.9 and 1.6 times higher than the PCz and unannealed PCT respectively. The TG-DTA study revealed the high thermal stability of the annealed material which is 4.8 times higher than the unannealed. The annealed PCT showed higher photocatalytic activity towards rhodamine B (RhB) and methylene blue (MB) dyes under natural sunlight than the UV light under same conditions. Besides, it shows excellent photocatalytic stability after 4 cycles. The extent of degradation is investigated by total organic carbon (TOC) analysis and found that the removal percentage towards the RhB and MB dyes under natural sunlight were 74.16 and 88.16% which is 1.7 and 1.5 times higher than the UV light under same conditions. The practical feasibility of PCT towards the real life time sample is investigated by chemical oxygen demand (COD) technique which is demonstrated a high removal percentage of 50% within 240 min. Thus, the synthesized nanocomposite is inexpensive, reliable and efficient photocatalyst for the removal of textile dyes.

通过简便的原位聚合方法合成了原始的聚咔唑（PCz）和聚咔唑（PCz）-氧化锡（SnO ₂）纳米复合材料（PCT），并通过各种先进技术进行了分析。通过PXRD鉴定晶体结构并公开了SnO ₂的原始四边形结构_。退火后的PCT表现出均匀的球状形态，且聚集度低。HRTEM分析证实了退火后的PCT的纳米复合材料的粒径为7.6 nm。根据BET分析，退火的PCT的表面积为7.9 m ²/ g分别比PCz和未退火的PCT高1.9和1.6倍。TG-DTA研究表明，退火材料的热稳定性比未退火材料高4.8倍。退火后的PCT在自然光下对罗丹明B（RhB）和亚甲基蓝（MB）染料的光催化活性高于在相同条件下的UV光。此外，它在4个循环后显示出优异的光催化稳定性。通过总有机碳（TOC）分析研究了降解程度，发现在自然阳光下对RhB和MB染料的去除率分别为74.16％和88.16％，比相同条件下的UV光高1.7和1.5倍。通过化学需氧量（COD）技术研究了PCT在现实生活中的样品的实际可行性，该技术被证明在240分钟内具有50％的高去除率。因此，合成的纳米复合材料是用于去除纺织品染料的廉价，可靠和有效的光催化剂。