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通过溶胶-凝胶法制备TiO_2/石墨烯/累托石复合催化剂(TGR),并进行SEM、TEM、XRD和FT-IR表征,研究了复合催化剂制备过程中的Ti/累托石、煅烧温度等对催化性能的影响及其对RhB的降解效果.结果表明,Ti/累托石为20mmol/g,煅烧温度为450℃制备的TiO_2/石墨烯/累托石复合催化剂,在pH 7.0时,对RhB的降解率可达79.1%,3次循环实验后,催化剂的光催化性能无明显下降.该催化剂主要是通过破坏苯环对RhB进行降解.
The TiO 2 / graphene / rectorite composite catalyst (TGR) was prepared by sol-gel method and characterized by SEM, TEM, XRD and FT-IR. The effects of Ti / rectorite, calcination temperature Etc. on the catalytic performance and its degradation effect on RhB.The results show that Ti / Rectorite is 20mmol / g, the calcination temperature is 450 ℃ prepared TiO 2 / graphene / Rectorite composite catalyst at pH 7.0, The degradation rate of RhB reached 79.1%. After 3 cycles, the photocatalytic activity of the catalyst did not decrease obviously. The catalyst mainly degraded RhB by destroying the benzene ring.