利用一种新的原位水解沉积方法,以在高湿度空气中老化的甲醇中作为溶剂,通过乙醇钽水解而成前驱体微球颗粒沉积,制备出了高效的Ta_3N_5微球光电极,其1.6 V(vs RHE)电极电位下的光电流值达到了6.6 m A·cm~(-2)。相反地,在新鲜的甲醇溶液中没有钽前驱体微球颗粒沉积。这表明甲醇中水的含量对Ta_3N_5微球光电极的形成十分重要。另外,本制备方法也能方便地在其他透明导电衬底上制备出Ta_3N_5。 A novel in-situ hydrolytic deposition method was used to deposit the precursors microspheres through the hydrolysis of tantalum hydride as a solvent in methanol aged in high humidity air to produce highly efficient Ta 3 N 5 microspheres with 1.6 The photocurrent value of V (vs RHE) reached 6.6 m A · cm ~ (-2). In contrast, no tantalum precursor microsphere particles were deposited in the fresh methanol solution. This indicates that the water content in methanol is very important for the formation of Ta_3N_5 microspheres. In addition, the preparation method can also be easily prepared on other transparent conductive substrate Ta_3N_5.