title: Synthesis of macroporous silica biomass nanocomposite based on XG/MgSiO₃ for the removal of toxic ions.
abstract: Biomass is known as a low-cost adsorbents and there is a need for the development of synthesis method further increase its efficient applications. In this work, a macroporous nanocomposite biomass was synthesized by natural polymer (Xanthan gum) and silicate. The resulting nanocomposite was characterized with XRD, SEM, TEM, BET and FTIR. The analysis confirmed that the functions silicate groups were successfully introduced and the nanocomposite not only showed a special macroporous structure but also showed a better cation exchange capacity which helps to retain cation ions. What's more, in order to investigate the adsorption capacity of the biomass, adsorption experiments were considered. The experiment results revealed that nanocomposite showed a high-efficiency adsorption capacity to remove toxic ions such as arsenic, chromium, mercury and cadmium.
authors: Department of Chemistry, Dalian University of Technology, Dalian 116023, PR China. Electronic address: chmawv@yahoo.com.
authors: Wei
authors: W
authors: Ma
authors: Department of Chemistry, Dalian University of Technology, Dalian 116023, PR China.
authors: Fanqing
authors: F
authors: Meng
authors: Department of Chemistry, Dalian University of Technology, Dalian 116023, PR China.
authors: Zihong
authors: Z
authors: Cheng
authors: Department of Chemistry, Dalian University of Technology, Dalian 116023, PR China.
authors: Gang
authors: G
authors: Xin
authors: Department of Chemistry, Dalian University of Technology, Dalian 116023, PR China.
authors: Shibo
authors: S
authors: Duan
mesh_terms: D000327:Adsorption; D018533:Biomass; D017633:Magnesium Silicates / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D053761:Nanocomposites; D011135:Polysaccharides, Bacterial / Q000737:chemistry*; D016062:Porosity; D012822:Silicon Dioxide / Q000138:chemical synthesis* / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction
chemical_list: D017633:Magnesium Silicates; D011135:Polysaccharides, Bacterial; C005013:Florisil; D012822:Silicon Dioxide; C002563:xanthan gum
keywords: Biomass nanocomposite; Biosorption; Pyrolysis temperature; Silicate; Xanthan gum