2.1 Materials
The porous Ti membrane substrate
(wafer with diameter 20 mm, thickness 1 mm, pore size 10 μm, and
porosity 45%) was purchased from Kunshan Yinghuixiong electronic
technology company; 3-aminopropyltriethoxysilane
(C9H23NO3Si) was
purchased from Macklin Biochemical company; 2-methylimidazole (2-mIm)
was purchased from Aladdin (Shanghai); Methanol was purchased from
Knowles; Zinc nitrate hexahydrate, copper nitrate trihydrate, ethanol,
sodium hydroxide and acetone were all purchased from Chengdu Kelong
company. All materials are analytical grade and were used as received
without further purification.