本研究探討了利用基於半導體的光催化劑將太陽能高效轉換為化學能的方法，凸顯其在環境修復方面的潛力。主要專注在將光催化技術應用於2-氯苯酚和亞甲基藍的降解，這是需要進行處理的關鍵污染物。本研究通過離子交換法、後續焙燒和超聲波處理合成了AgAlO2/g-C3N4二元納米複合材料，這個過程增強了AgAlO2到g-C3N4的光產生電子轉移，使得g-C3N4表面的還原電子充電顯著增加。通過詳細的晶體學、電子顯微鏡、光電子能譜、電化學和光譜學表徵分析，全面地檢驗了合成複合材料在2-氯酚和亞甲藍降解中的光催化活性。在各種複合材料中，AgAlO2/20% g-C3N4被證明是最活躍的光催化劑，其在可見光下對亞甲藍和2-氯酚的降解達到98% 和97%。值得注意的是，AgAlO2/20% g-C3N4超越了單獨的AgAlO2和單獨的g-C3N4，表現出亞甲藍的降解率提高1.66倍，以及分別為20.17×10-3 min-1、4.18×10-3 min-1和3.48×10-3 min-1的恆定速率（k）值。提高的光催化活性歸因於電子-電洞對的再結合速率降低，確認O2•− 和h+是在可見區域引導亞甲藍光降解的主要光活性物種，這些發現為開發用於環境修復的高效二元光催化劑提供了新的可能性。

This study explores the efficient conversion of solar energy into chemical energy using semiconductor-based photocatalysts, showcasing their potential in environmental remediation. The primary focus is on the application of photocatalytic technology for the degradation of 2-chlorophenol and methylene blue, critical pollutants requiring remediation. The research involves the synthesis of binary AgAlO2/g-C3N4 nanocomposites through an exchange ion method, subsequent calcination, and sonication. This process enhances the transfer of photogenerated electrons from AgAlO2 to g-C3N4, resulting in a significantly increased reductive electron charge on the surface of g-C3N4. The photocatalytic activity of the synthesized composites is comprehensively examined in the degradation of 2-chlorophenol and methylene blue through detailed crystallographic, electron-microscopy, photoemission spectroscopy, electrochemical, and spectroscopic characterizations. Among the various composites, AgAlO2/20% g-C3N4 emerges as the most active photocatalyst, achieving an impressive 98% degradation of methylene blue and 97% degradation of 2-chlorophenol under visible light. Notably, AgAlO2/20% g-C3N4 surpasses bare AgAlO2 and bare g-C3N4, exhibiting 1.66 times greater methylene blue degradation and constant rate (k) values of 20.17 × 10-3 min-1, 4.18 × 10-3 min-1, and 3.48 × 10-3 min-1, respectively. The heightened photocatalytic activity is attributed to the diminished recombination rate of electron-hole pairs. Scavenging evaluations confirm that O2•− and h+ are the primary photoactive species steering methylene blue photodegradation over AgAlO2/g-C3N4 in the visible region. These findings present new possibilities for the development of efficient binary photocatalysts for environmental remediation.

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