Supported gold catalysts with their uniquely catalytic properties have found extensive applications. A challenge for gold catalyst research is now to prevent the sintering of gold particles at high temperature maintaining their high activities simultaneously. Herein, Au/Ni–HAP catalyst with high activity and sintering-resistance was prepared by a deposition–precipitation method. Samples were characterized by XRD, TEM, SEM, UV–Vis, ICP, XPS, FT-Raman and O₂-TPD, and their catalytic performance for CO oxidation was tested. TEM results indicated that Au/Ni–HAP catalyst had the smaller gold nanoparticles than Au/HAP catalyst. In UV–Vis spectra, the addition of Ni to Au/HAP catalyst gave rise to larger absorption into visible light, changing the electronic structure of Au/HAP catalyst. Based on XPS studies, nickel existed mainly as NiO in Au/Ni–HAP catalyst, and a small amount of Ni(OH)₂ also was formed in Au/Ni–HAP catalyst. Profiles of O₂-TPD revealed that Au/Ni–HAP catalyst performed bigger adsorption of oxygen and possessed more new oxygen adsorption sites compared with Au/HAP catalyst. Results showed that Au/Ni–HAP catalyst had better catalytic activity and sintering-resistance than Au/HAP catalyst. The enhanced activity could be attributed to the synergistic effect of gold, nickel and HAP in Au/Ni–HAP catalyst, which created plenty of oxygen vacancies and changed the electronic structure of Au/HAP catalyst.

具有独特催化性能的负载型金催化剂已得到广泛的应用。现在，金催化剂研究的挑战是防止在高温下烧结金颗粒同时保持其高活性。在这里，通过沉积沉淀法制备了具有高活性和耐烧结性的Au / Ni-HAP催化剂。通过XRD，TEM，SEM，UV-Vis，ICP，XPS，FT-Raman和O ₂表征样品-TPD及其对CO氧化的催化性能进行了测试。TEM结果表明，Au / Ni-HAP催化剂比Au / HAP催化剂具有更小的金纳米颗粒。在UV-Vis光谱中，向Au / HAP催化剂中添加Ni会增加对可见光的吸收，从而改变Au / HAP催化剂的电子结构。根据XPS研究，镍在Au / Ni-HAP催化剂中主要以NiO的形式存在，在Au / Ni-HAP催化剂中也形成了少量的Ni（OH）₂。O _2的资料-TPD显示与Au / HAP催化剂相比，Au / Ni-HAP催化剂对氧气的吸附更大，并且具有更多的新的氧吸附位点。结果表明，Au / Ni-HAP催化剂比Au / HAP催化剂具有更好的催化活性和耐烧结性。活性的提高可能归因于金，镍和HAP在Au / Ni-HAP催化剂中的协同作用，从而产生了大量的氧空位并改变了Au / HAP催化剂的电子结构。