A 2D-2D titanium dioxide nanosheet-reduced graphene oxide (TNS-rGO) composite with better electronic conductivity and hydrophilicity was prepared by the hydrothermal method. The as-obtained TNS-rGO composite was further functionalized with 3-aminopropyltriethoxysilane (APTES) to provide a large amount of –NH₂ groups on the surface for anchoring ultrafine PdAg alloy nanoparticles with an average particle size of 1.69 nm by a facile wet reduction approach. Benefiting from the combined effects of well-dispersed PdAg alloy nanoparticles, facilitated electron transfer from TNS-rGO to Pd, and increased electron density of active sites, the Pd₈Ag₁/NH₂-TNS-rGO catalyst exhibited excellent activity towards dehydrogenation of formic acid without adding any additives at 298 K, corresponding to an initial turn over frequency as high as 1090 h⁻¹, which is much higher than that of most other state-of-the-art catalysts.

通过水热法制备了具有较好的电子电导率和亲水性的2D-2D二氧化钛纳米片还原氧化石墨烯（TNS-rGO）复合材料。将获得的TNS-rGO复合材料进一步用3-氨基丙基三乙氧基硅烷（APTES）进行官能化处理，以在表面上提供大量–NH ₂基团，通过便捷的湿法还原将平均粒径为1.69 nm的超细PdAg合金纳米颗粒锚定。方法。得益于分散良好的PdAg合金纳米颗粒的综合作用，促进了电子从TNS-rGO到Pd的转移，并增加了活性位点Pd ₈ Ag ₁ / NH _2的电子密度-TNS-rGO催化剂表现出优异的甲酸脱氢活性，而无需在298 K下添加任何添加剂，这对应于高达1090 h ^-1的初始转换频率，该频率远高于大多数其他状态先进的催化剂。