Abstract Controlled release of hydrogen from ammonia borane (AB) using efficient and low-cost catalyst is still a big problem. In this work a hybrid material of CuxCo1−xPtyO catalyst immobilized on reduced graphene oxide (CuxCo1−xPtyO/RGO) was prepared for the hydrolysis of AB, which exhibited an extra-high TOF value of 854.0 (H2)mol/(Cat-Pt)mol·min. In-situ X-ray absorption spectroscopy reveals that the metallic Pt in the catalyst is the real catalytic center in the hydrolysis reaction, while it will be a stable oxidized state of Pt in air. In the ternary metallic catalyst, Co mainly serves as an electron donor to form Co Pt bonds and then modulate the electronic structure, while Cu can keep catalyst stable. RGO as an excellent support also plays an important role to facilitate the charge transfer and help for the particle dispersion. All the components in the ternary metallic catalyst show synergistic effect to enhance the catalytic performance.

中文翻译：

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具有内部协同效应的三元金属CuxCo1−xPtyO/RGO催化剂可有效水解氨硼烷

摘要 使用高效低成本的催化剂从氨硼烷（AB）中控制释放氢气仍然是一个大问题。在这项工作中，制备了一种固定在还原氧化石墨烯上的 CuxCo1-xPtyO 催化剂杂化材料（CuxCo1-xPtyO/RGO）用于水解 AB，其 TOF 值高达 854.0 (H2)mol/(Cat-Pt )mol·min。原位 X 射线吸收光谱表明，催化剂中的金属 Pt 是水解反应的真正催化中心，而它在空气中将是 Pt 的稳定氧化态。在三元金属催化剂中，Co 主要作为电子供体形成 Co Pt 键，然后调节电子结构，而 Cu 可以保持催化剂稳定。RGO 作为一种极好的载体，在促进电荷转移和帮助粒子分散方面也起着重要作用。