Abstract Tailored synthesis of Ag/AgBr nanostructures (AABR) with intimate interface interaction for enhanced photocatalytic performance is a challenge for its extensive applications. Herein, tailored Ag/AgBr nanostructures promoted with char-microwave activated carbon (ACK) was synthesized through a modified deposition-precipitation method. The influence of four reaction parameters comprising of a mass of surfactant, temperature, ACK mass and ammonium hydroxide volume for the AABR-ACK composites were optimized using response surface methodology (RSM). Their simultaneous interactions on removal efficiency of tetracycline (TC) antibiotics under visible light were investigated under visible light. The high photocatalytic degradation of TC over AABR-ACK composites was governed by ammonium hydroxide volume and temperature. The SEM, XRD, FTIR, TEM, optical and electrochemical properties of the composites from these influential parameters, evidenced the formation of tailored AABR-ACK nanostructures with intimate interface interaction. The tailored near spheres nanostructures of AABR promoted with ACK boosted the visible light absorption, intimate interface contact, which promotes photo-induced charge pairs separation for the enhanced visible-light photocatalytic activity of AABR-ACK 7 composite TC (87 %). In addition, AABR-ACK 7 composite possessed significant recycle efficiency up to four consecutive cycles. The mineralization efficiency of AABR-ACK 7 on TC achieved 78.5 % and possible degradation pathways of TC were proposed. This work offers good insight into the tailored design of visible-light responsive heterojunction photocatalysts for sustainable environmental remediation.

中文翻译：

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Ag/AgBr 纳米结构耦合活性炭的定制合成与密切的界面相互作用，以增强四环素的光降解

摘要 Ag/AgBr 纳米结构 (AABR) 的定制合成具有密切的界面相互作用以增强光催化性能是其广泛应用的挑战。在此，通过改进的沉积-沉淀法合成了用炭-微波活性炭 (ACK) 促进的定制 Ag/AgBr 纳米结构。使用响应面法 (RSM) 优化了包括表面活性剂质量、温度、ACK 质量和氢氧化铵体积在内的四个反应参数对 AABR-ACK 复合材料的影响。在可见光下研究了它们在可见光下对四环素 (TC) 抗生素去除效率的同时相互作用。TC 在 AABR-ACK 复合材料上的高光催化降解受氢氧化铵体积和温度的控制。SEM、XRD、FTIR、TEM、从这些有影响的参数中分析复合材料的光学和电化学特性，证明形成了具有密切界面相互作用的定制 AABR-ACK 纳米结构。用ACK促进的AABR近球纳米结构增强了可见光吸收，密切界面接触，促进了光致电荷对分离，从而增强了AABR-ACK 7复合TC（87％）的可见光光催化活性。此外，AABR-ACK 7 复合材料在连续四个循环中具有显着的回收效率。AABR-ACK 7对TC的矿化效率达到78.5%，并提出了TC可能的降解途径。这项工作为用于可持续环境修复的可见光响应异质结光催化剂的定制设计提供了很好的见解。