Water pollution has become a universal health problem due to frequently discharged toxic chemical effluents and contamination from pathogenic bacteria. Amidst all this, nanocomposites have gained wide interests owing to their promising application as photocatalysts and antibacterial agents. In the present study, hybrid Ag/SWCNT/PPy (Silver nanoparticles/Single-walled carbon nanotubes/Polypyrrole) based ternary nanocomposites were synthesized by applying facile and cost-effective one-pot synthesis approach. The morphological studies (SEM and TEM) revealed that the synthesized ternary nanocomposite possesses a core–shell type of structure where spherical Ag NPs anchored SWCNTs act as core and PPy formed a shell over it. The composites were also characterized by FTIR, XRD and UV. Ag/SWCNT/PPy was used as an efficient photocatalyst for degrading toxic organic dyes like RB (rose bengal) and MB (methylene blue). It showed high degradation rates of 91% and 89.3% against RB and MB dyes respectively within 100 min. of UV irradiation time. Owing to the synergistic effect of Ag NPs, SWCNTs and PPy, the synthesized ternary nanocomposite also inhibited the growth and multiplication of tested bacteria such as S. aureus, B. cereus, E. coli and P. aeruginosa completely within 24 h. Overall, Ag/SWCNT/PPy possesses a superior potential than Ag NPs and Ag/SWCNTs for their use in the development of photocatalysts and anti-bacterial agents, thereby paving a way for the treatment of wastewater and bio-remediation in near future.

中文翻译：

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使用具有芯-壳结构的基于Ag / SWCNT / PPy的纳米复合材料增强对有毒染料的抗菌活性和光修复

由于经常排放有毒化学废水和致病菌污染，水污染已成为普遍的健康问题。在所有这些之中，纳米复合材料由于其作为光催化剂和抗菌剂的有前途的应用而获得了广泛的兴趣。在本研究中，通过应用简便且经济高效的一锅法合成了基于混合Ag / SWCNT / PPy（银纳米颗粒/单壁碳纳米管/聚吡咯）的三元纳米复合材料。形态学研究（SEM和TEM）表明，合成的三元纳米复合材料具有核-壳型结构，其中锚定SWCNT的球形Ag NP充当核，而PPy在其上形成壳。还通过FTIR，XRD和UV表征了复合材料。Ag / SWCNT / PPy被用作降解有毒有机染料如RB（玫瑰红）和MB（亚甲基蓝）的有效光催化剂。在100分钟内，其对RB和MB染料的降解率分别高达91％和89.3％。紫外线照射时间。由于Ag NPs，SWCNTs和PPy的协同作用，合成的三元纳米复合材料还抑制了受试细菌的生长和繁殖，例如金黄色葡萄球菌，蜡状芽孢杆菌，大肠杆菌和铜绿假单胞菌在24小时内完全消失。总体而言，在光催化剂和抗菌剂的开发中，Ag / SWCNT / PPy具有比Ag NP和Ag / SWCNT更高的潜力，从而在不久的将来为废水处理和生物修复铺平了道路。