Xuemin Cui
Guangxi University
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Publication
Featured researches published by Xuemin Cui.
Journal of Materials Chemistry B | 2017
Xin He; Pengru Liu; Jing Liu; Yaseen Muhammad; Meiping Zhu; Jianhua Sun; Xuemin Cui; Dankui Liao; Zhangfa Tong
N-doped hollow porous carbon materials have attracted significant scientific interest in the field of peptide adsorption, drug delivery and catalysis. However, their facile synthesis is still a challenge due to the lack of an ideal template and effective route for high specific surface area (SSA). In this work, we report a facile approach for preparing N-doped hollow porous carbon whiskers (HPCWs) by using CaCO3 whiskers as a green template and double inner-activating agent. Two inner activators, CO2 and Ca(OH)2, are generated from the CaCO3 whisker template during the carbonization process. Among them, Ca(OH)2 was formed by H2O vapors reacting with the remaining template CaO. Attributed to the drastic synergistic effect of inner-activation (CO2 or Ca(OH)2) and outer-activation (KOH), the synthesized HPCWs exhibit ultrahigh SSA (3007 m2 g-1), the largest pore volume (2.63 cm3 g-1) and a controllable proportion of micropores (Sm/St, 60-86%). These intriguing pore structure characteristics of HPCWs endow with them rich target-oriented applications, as exemplified by their outstanding adsorption for casein hydrolysate (10 080 mg g-1), which is two orders of magnitude (102) higher than that of common porous materials. This facile and green synthesis strategy may pave a new way to prepare hollow porous carbon materials with the desired pore structure and high surface area for numerous applications.
Chinese Journal of Chemical Engineering | 2012
Guangjian Zheng; Xuemin Cui; Weipeng Zhang; Zhangfa Tong; Feng Li
Abstract Attempts had been made to synthesize Al 2 O 3 -2SiO 2 nanopowders by sol-gel method with tetraethoxysilane (TEOS) and aluminum nitrate (ANN) as the starting materials. DTS, TEM, SEM and BET were employed to study the effects of process parameters on the size, specific surface area and structure (morphology) of powders. The alkali-activation reactivity of the powders was tested for manufacturing geopolymers and their hydrothermal reactions were performed for fabricating zeolites. The results show that the optimum process parameters and drying method for preparing Al 2 O 3 -2SiO 2 nanopowders are as follows: the molar ratio of water and ethanol to TEOS are 0:U1 and 12:U1 respectively at synthetic temperature of 50° and the drying method is azeotropic distillation with microwave drying. The average particle diameters of the powders were about 70 nm and the largest BET specific surface area was up to 669 m 2 ·g −1 . The compressive strength of the geopolymer and the calcium exchange capacity (by CaCO 3 ) of NaA zeolite prepared with the powders reached to 29 MPa and 366 mg·g −1 respectively.
Journal of Materials Science | 2009
Guangjian Zheng; Xuemin Cui; Weipeng Zhang; Zhangfa Tong
Materials Chemistry and Physics | 2011
Xuemin Cui; Leping Liu; Yan He; Jinyu Chen; Ji Zhou
Chemical Communications | 2017
Xin He; Huaju Sun; Meiping Zhu; Muhammad Yaseen; Dankui Liao; Xuemin Cui; Haoyu Guan; Zhangfa Tong; Zhenxia Zhao
Ceramics International | 2010
Xuemin Cui; Yan He; Zhong-yuan Liang; He Zhang; Ji Zhou
Applied Clay Science | 2013
Xiao-ling Song; Xuemin Cui; Kunsheng Lin; Guang-jian Zheng; Yan He
Archive | 2012
Xuemin Cui; Kunsheng Lin; Jinyu Chen; Junli Yu; Jinglin Huang
Ceramics International | 2016
Chang-ming Guo; Kai-tuo Wang; Meng-yi Liu; Xuan-hai Li; Xuemin Cui
Particuology | 2012
Guangjian Zheng; Xuemin Cui; Weipeng Zhang; Zhangfa Tong; Feng Li