CuO/Cu2(OH)3Cl的制备及其光催化降解染料光谱性能研究

以CuCl2和NaOH为原料、微波液相加热法制得CuO/Cu2(OH)3Cl粉体作为光催化剂,XRD和FTIR进行了表征.用光度分析法测定了不同光源、溶液的酸度、催化剂的用量、光照时间等条件对染料脱色率的影响.结果表明,用太阳光作为光源照射4h,溶液的酸度为pH8,CuO/Cu3(OH)3 Cl的用量为40 mg/50 mL,氨基黑、靛蓝二磺酸钠等染料脱色率达到90%以上.加入Fe3 ,H2O2等其他物质可提高染料的脱色率.通过红外光谱和紫外光谱分析,表明染料分子在催化剂和光照条件下发生了降解.

Study on Preparation of CuO/Cu2(OH)3Cl Powder and Its Spectrum Behavior for Photodegradation Decoloration of Dyes

Ultrafine powder CuO/Cu2 (OH)3Cl photocatalysts were prepared by CuCl2 and NaOH reaction and heating method of microwave liquid phase. XRD and FTIR were used to investigate the properties of the CuO/Cu2 (OH)3 Cl powder, and photocatalytic degradation of dyes by the CuO/Cu2 (OH)3 Cl catalysts was investigated. The results show that the decoloration rate is related to the pH value of dyes solution, irradiation time, as well as the intensity of irradiation. After irradiation with sun light for 4 h, the decoloration rate was up to 90% when the concentration of dyes was 20 mg x L(-1), the amount of catalyst was 40 mg) and the acidity was pH 8 in 50 mL dye solution. Adding Fe3+, H2O2 and other catalyst can improve the decoloration rate greatly. So the decoloration of dyes was due to photocatalytic degradation by analyzing the IR spectrum and the ultraviolet spectrum, and the photocatalytic activity of CuO/Cuz (OH)3 Cl powder is good in photocatalytic decoloration of dyes, such as amido black, indigo carmine and so on. The stability of photocatalytic nature of powder CuO/Cu2 (OH)3Cl was studied, and CuO/ Cu2 (OH)3 Cl powder can be recycled.