Department of Chemistry, Indian Institute of Technology Rookree, Roorkee 247667, India.
Carbohydr Polym. 2013 Jun 5;95(1):434-40. doi: 10.1016/j.carbpol.2013.02.045. Epub 2013 Mar 4.
Cellulose acetate-zirconium (IV) phosphate nanocomposite (CA/ZPNC) was synthesized by sol-gel technique at pH 0-1 and was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX) spectroscopy, Fourier infrared spectroscopy (FTIR) and thermal analysis (TGA/DTA/DSC). Ion exchange capacity, pH titration, elution concentration, elution behaviour, thermal stability and distribution coefficient were investigated to explore ion exchange behaviour of CA/ZPNC. The nanocomposite showed an ion-exchange capacity of 1.4 mequiv. g(-1) for Na(+) and was highly selective for Pb(2+) and Zn(2+) over many other metal ions. The photocatalytic activity of the CA/ZPNC was explored for degradation of a model Congo red dye from aqueous phase. 90% of dye was removed in 60 min of irradiation. Simultaneous adsorption and photocatalysis had synergetic effect on dye degradation.
纤维素醋酸酯-锆（IV）磷酸盐纳米复合材料（CA/ZPNC）通过溶胶-凝胶技术在 pH 值为 0-1 的条件下合成，并通过 X 射线衍射（XRD）、扫描电子显微镜（SEM）、能量色散 X 射线（EDX）光谱、傅里叶变换红外光谱（FTIR）和热分析（TGA/DTA/DSC）进行了表征。研究了离子交换容量、pH 值滴定、洗脱浓度、洗脱行为、热稳定性和分配系数，以探讨 CA/ZPNC 的离子交换行为。该纳米复合材料对 Na(+) 的离子交换容量为 1.4 mequiv. g(-1)，对 Pb(2+) 和 Zn(2+) 具有高度选择性，而对许多其他金属离子则没有选择性。还研究了 CA/ZPNC 的光催化活性，用于从水相中降解模型刚果红染料。在照射 60 分钟后，染料去除率达到 90%。吸附和光催化同时对染料降解具有协同作用。
