With the expanded installation and decommission of photovoltaic modules, the recovery of critical metals involved, such as gallium (Ga) and indium (In), is becoming an important issue. Liquid–liquid extraction, as a conventional recovery method, is always accompanied by serious emulsification, poor phase-separation, and huge volatile organic solvent consumption. Here, a more efficient and environmentally benign solid adsorbent was innovatively prepared by combining P507 with coconut shell-derived mesoporous activated carbon (P507@MAC) for Ga and In recovery. Surprisingly, P507@MAC retained an excellent selectivity for In³⁺ from the coexisting ions (Al³⁺, Zn²⁺, Cd²⁺, Cu²⁺, and Mg²⁺), and the selectivity for Ga³⁺ was actually increased compared to P507. Unexpectedly high adsorption capacities of P507@MAC for Ga³⁺ (67.0 mg·g⁻¹) and In³⁺ (52.6 mg·g⁻¹) were found to be 1.85 and 1.23 times the accumulation of MAC and P507, respectively, and much superior to that of P507-impregnated resin (11.8 mg·g⁻¹ (Ga³⁺) and 36.5 mg·g⁻¹ (In³⁺)). Moreover, the adsorption capacity of this novel adsorbent demonstrated no significant decrease over 6 cycles. Such desirable capture capability of Ga³⁺ and In³⁺ was ascribed to the rich mesopores and high surface area of MAC, providing adequate adsorption sites for phosphoryl groups and metal ions. Going forward, by demonstrating successful Ga³⁺ and In³⁺ separation from the leaching solution of waste CIGS photovoltaic modules, the extractant-MAC composites might provide a promising and industry-compatible approach for valuable metal recovery.

随着光伏组件安装和退役的扩大，其中涉及的关键金属（例如镓（Ga）和铟（In））的回收正成为一个重要问题。液液萃取作为传统的回收方法，始终伴随着严重的乳化、相分离差以及巨大的挥发性有机溶剂消耗。在这里，通过将P507与椰壳衍生的介孔活性炭（P507@MAC）相结合，创新地制备了一种更高效、更环保的固体吸附剂，用于Ga和In的回收。令人惊讶的是，P507@MAC从共存离子（Al ³⁺、Zn ²⁺、Cd ²⁺、Cu ²⁺和 Mg ^{2+ ）中保留了对 In 3+}的优异选择性，并且对 Ga ³⁺的选择性实际上有所增加与P507相比。P507@MAC 对 Ga ³⁺ (67.0 mg·g ⁻¹ ) 和 In ³⁺ (52.6 mg·g ⁻¹ ) 的吸附容量出人意料地高，分别是 MAC 和 P507 累积量的 1.85 和 1.23 倍，并且远优于 P507 浸渍树脂 (11.8 mg·g ^-1 (Ga ³⁺ ) 和 36.5 mg·g ^-1 (In ³⁺ ))。此外，这种新型吸附剂的吸附能力在 6 个循环中没有显着下降。^{Ga 3+}和In ³⁺的这种理想的捕获能力归因于MAC丰富的介孔和高表面积，为磷酰基和金属离子提供了足够的吸附位点。展望未来，通过展示从废 CIGS 光伏组件浸出溶液中成功分离Ga ³⁺和 In ^{3+ ，萃取剂-MAC 复合材料可能为有价金属回收提供一种有前途且行业兼容的方法。}