芋头淀粉/AgNPs复合粒子的制备及其催化性能研究

Study on the Preparation and Catalytic Performance of Taro Starch/AgNPs Composite Particles

本文利用芋头淀粉颗粒与银氨溶液的静电吸附作用制备出芋头淀粉/AgNPs复合粒子,采用紫外可见分光光度计研究其对硼氢化钠与罗丹明B降解反应的催化性能,通过单因素试验探讨不同反应条件对其催化性能的影响。结果表明:芋头淀粉/AgNPs复合粒子对硼氢化钠与罗丹明B的降解反应有较强的催化性能;在芋头淀粉用量为0.1000 g、银氨溶液浓度为5×10^(-4)mol/L、PVP用量为0.1000g、p H值为8.0、反应温度为50℃、反应时间为24 h的条件下制得芋头淀粉/AgNPs复合粒子的催化性能最佳。

In this paper, the taro starch/AgNPs composite particles were prepared by electrostatic adsorption between taro starch granules and silver ammonia solution, and their catalytic performance on the degradation reaction of sodium borohydride and Rhodamine B was studied by UV-Vis spectrophotometer. The effects of different reaction conditions on their catalytic performance were discussed by single factor test. The results showed that the taro starch/AgNPs composite particles had strong catalytic performance on the degradation reaction of sodium borohydride and Rhodamine B. Besides, the catalytic performance of taro starch/AgNPs composite particles was the best when the dosage of taro starch was 0.1000 g, the concentration of silver ammonia solution was 5×10^(-4)mol/L, the dosage of PVP was 0.1000 g, pH value was 8.0, reaction temperature was 50 ℃, reaction time was 24 h.