Four aerogels with different molar ratios of ligand to metal ion were prepared by sol-gel method using 2-aminoterephthalic acid (NH2-BDC) as ligand and zirconium tetrachloride as Zr4+ source. The structure and photoelectric properties of the materials were characterized by SEM, BET, FTIR, XPS, UV-Vis and fluorescence spectroscopy. The results showed that the aerogels had a large specific surface area and rich pores and exhibited photoelectric effect under Xenon lamp irradiation. They could photocatalyze the reduction of CO2 to produce methanol in water. The effects of different molar ratios of ligand to metal ion on the photocatalytic reduction of CO2 were investigated under 300 W Xenon lamp irradiation. When the photocatalytic reduction of CO2 was performed for 4 h over the aerogel which actual ratio n (NH2-BDC): n (Zr4+) is 1.10∶1, the methanol yield was 3.94 mmol/g-cat and the corresponding turnover frequency (TOF) was 2.41 h-1. While the methanol yield and TOF over NH2-UiO-66(Zr) was 2.33 mmol/g-cat and 1.80 h-1 under the same reaction conditions. In addition, the aerogel had good photocatalytic stability.