Carboxylation of terminal alkynes with CO₂ via direct C–H bond activation is a highly appealing way to capture and convert CO₂ but faces great challenges and difficulty. Here, we report an efficient catalyst that is prepared simply through introduction of p-tert-butylaniline into graphite oxide powders followed by localized growth of Ag nanoparticles (NPs). The bulky nature of p-tert-butylaniline facilitates the powder exfoliation, giving rise to mass production of uniform modified graphene oxide (tert-GO) nanosheets of 4 nm in thickness. Notably, Ag/tert-GO shows excellent catalytic activity for converting alkynes regardless of containing electron-donating or electron-withdrawing groups under mild reaction conditions. The synergy of the amide linkages on tert-GO nanosheets and the supported small-sized Ag NPs is recognized as the vital role in promoting adsorption of CO₂ and subsequent conversion.

末端炔烃通过直接的C–H键活化与CO ₂进行羧基化是吸引和转化CO ₂的极具吸引力的方法，但面临巨大的挑战和困难。在这里，我们报告说，简单地通过引入制备一种有效的催化剂p -叔-butylaniline成石墨氧化物粉末，随后的Ag纳米颗粒（NP）的局部生长。p-tert的体积大丁基苯胺有助于粉末剥落，从而可大量生产厚度为4 nm的均匀改性氧化石墨烯（tert-GO）纳米片。值得注意的是，无论在温和的反应条件下，Ag / tert-GO都具有出色的催化炔烃转化活性，无论其含有给电子基团或吸电子基团。tert-GO纳米片上的酰胺键与负载的小型Ag NP的协同作用被认为是促进CO ₂吸附和后续转化的关键作用。