Pathania Deepak, Katwal Rishu, Sharma Gaurav, Naushad Mu, Khan Mohammad Rizwan, Al-Muhtaseb Ala'a H
School of Chemistry, Shoolini University, Solan, 173212 Himachal Pradesh, India.
School of Chemistry, Shoolini University, Solan, 173212 Himachal Pradesh, India.
Int J Biol Macromol. 2016 Jun;87:366-74. doi: 10.1016/j.ijbiomac.2016.02.073. Epub 2016 Mar 2.
Guar gum/Al2O3 (GG/AO) nanocomposite was prepared using simple and cost effective sol-gel method. This nanocomposite was characterized by several analytical techniques viz. scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), thermal analysis (TGA/DTA), Fourier transform infrared spectroscopy (FTIR) and ultraviolet-visible spectroscopy (UV-vis). The FTIR analysis confirmed that GG/AO composite material was formed. TEM images inferred the particle size in the range between 20 and 45nm. GG/AO nanocomposite exhibited good photocatalytic performance for malachite green (MG) dye (dye initial concentration 1.5×10(-5)M) degradation from aqueous phase. The adsorption followed by photocatalysis and coupled adsorption/photocatalysis reaction achieved about 80% and 90% degradation of MG dye under solar irradiation. Antibacterial test showed the excellent activity of GG/AO nanocomposite against Staphylococcus aureus.
采用简单且经济高效的溶胶-凝胶法制备了瓜尔胶/氧化铝（GG/AO）纳米复合材料。通过多种分析技术对该纳米复合材料进行了表征，即扫描电子显微镜（SEM）、透射电子显微镜（TEM）、X射线衍射（XRD）、热分析（TGA/DTA）、傅里叶变换红外光谱（FTIR）和紫外-可见光谱（UV-vis）。FTIR分析证实形成了GG/AO复合材料。TEM图像推断粒径在20至45nm之间。GG/AO纳米复合材料对水相中孔雀石绿（MG）染料（染料初始浓度为1.5×10⁻⁵M）的降解表现出良好的光催化性能。光催化吸附及耦合吸附/光催化反应在太阳辐射下实现了约80%和90%的MG染料降解。抗菌测试表明GG/AO纳米复合材料对金黄色葡萄球菌具有优异的活性。
