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Cheng Zhao,Qiongyuan Hu,Xiuwen Wu,Guopu Chen,Hua Wu,Jianan Ren 한국고분자학회 2019 Macromolecular Research Vol.27 No.9
Previous studies have established that sole probiotics or fibre could be used to relieve colitis. However, few studies evaluated the synergistical effect of fibre and probiotics in treating colitis. This study, examined the effect of alginate, one of the commonest biomaterials and dietary fibre, and/or probiotics on the gut barrier in colitis mice. A synergistical effect was found between alginate and probiotics in colitis. Dextran sulfate sodium salt (DSS), a chemical toxic substance, was used to induce colitis model. Body weight, oxidative stress, inflammatory factors, gut barrier, intestinal morphology and the apoptosis of intestine epithelial cells were analyzed. A combination of probiotics and alginate was used to analyze their synergistic effect. The results showed that the combination of alginate and probiotics had a better therapeutic effect on colitis than using them individually, and they protected the gut barrier from DSS induced oxidative stress. The combination exhibited a greater ability in reducing pro-inflammatory factors and protecting the gut barrier from further damage. The synergistic effect of alginate and probiotics provides a great prospect for biotherapy in bowel diseases and oral drug delivery system.
Qi Zhao,Xiujuan Yu,Xiuwen Cheng,Juan Wu 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.6
Sulfur-free exfoliated graphite (EG) with large exfoliated volume (760 mL g-1) was prepared throughchemical oxidation, followed by microwave exfoliation. SEM results indicated that well-developednetwork pores in the worm-like structure of EG could be clearly observed. XPS results displayed thatsome functional groups were yielded on the surface of the as-prepared EG. Moreover, the capacity of EGwas evaluated by the adsorption of rodamine B and 4-chlorophenol aqueous solution. Results showedthat EG exhibited high adsorption capacity for RhB and 4-CP, which could be attributed to the functionalgroups and well-developed network pores in the worm-like EG.
First-principles study of LiBaF3 crystals containing interstitial fluoride
Hailing Qiao,Tingyu Liu,Qiren Zhang,Fang Cheng,Xiuwen Zhou 한국물리학회 2010 Current Applied Physics Vol.10 No.5
The positions of the interstitial fluoride atoms in LiBaF3 crystal are simulated by GULP. It is found that the formation energy is low when interstitial fluoride atoms at the center of the edge of the cube formed by Ba ions. The electronic structures and absorption bands for the perfect LiBaF3 crystal and the LiBaF3 crystal containing interstitial fluoride have been calculated using density functional theory code CASTEP. It is predicted that the interstitial fluoride atom combine with a formal lattice fluoride ion forming H center causes the 320 nm absorption band.
Pu Wang,Huiling Liu,Huan Fu,Xiuwen Cheng,Bing Wang,Qinghua Cheng,Jian Zhang,Pan Zou 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.27 No.-
In this study, a strain Z-1 has been isolated from penicillin bacterial residue. The physicochemicalproperties and molecular phylogenetic analysis of the strain were characterized by atomic forcemicroscope (AFM) and scanning electron microscope (SEM) and 16SrDNA, indicating the strain belongsto genus Klebsiella pneumoniae. Furthermore, the biodegradation process of PENG was investigated with99.99% degradation efficiency. Afterwards, high performance liquid chromatography (HPLC) and LC-MS/MS analysis were performed to identify its degradation products. Moreover, the possible mechanism wasproposed and confirmed in detail. These results suggest Klebsiella pneumoniae Z1 become a promisingalternative for improving penicillin removal from environment
Jianfeng Gou,Qiuling Ma,Yuqi Cui,Xiaoyong Deng,Huixuan Zhang,Xiuwen Cheng,Xiaoli Li,Mingzheng Xie,Qingfeng Cheng,Huiling Liu 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.49 No.-
In this study, high visible light response and charge separation efficiency of body-centered cubic Ag3PO4sub-microcrystals were fabricated through ultrasound-precipitation process. Additionally, the parameterswere optimized by photocatalytic (PC) removal degradation of diclofenac based on response surfacemethodology. Results indicated that the PC removal efficiency of diclofenac was significantly affected byAg3PO4 content and pH value. Under the optimized conditions, 99.9% of diclofenac could be degradedwithin 16 min Xenon illumination. Furthermore, three PC removal degradation pathways of diclofenacwere proposed, including OH-adduct to aromatic ring, direct oxidation by photoinduced holes anddecarboxylation of side chain from the parent compound.
Qiuling Ma,Huixuan Zhang,Yuqi Cui,Xiaoyong Deng,Ruonan Guo,Xiuwen Cheng,Mingzheng Xie,Qingfeng Cheng 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.57 No.-
Cu2O decorated TiO2 nano-tube arrays (Cu2O/TiO2 NTAs) photoelectrode was fabricated throughelectrodeposition strategy. Meanwhile, physicochemical properties of the resulting photoelectrode weresystematically studied by series of measurements. Results indicated that Cu2O/TiO2 NTAs photoelectrodeperformed a significantly enhanced light absorbance in the visible region between 400 and 800 nm,transient photocurrent density of 0.162 mA Cm 2, photogenerated charge separation efficiency and 99.9%of photoelectrocatalytic efficiency for decomposition of 2,4,6-trichlorophenol within 120 min Xenonillumination with the help of +1.0 V (vs. SCE) potential. Furthermore, the enhanced visible lightresponsible photoelectrocatalytic mechanism was proposed and discussed.
Jianfeng Gou,Xiaohui Li,Huixuan Zhang,Ruonan Guo,Xiaoyong Deng,Xiuwen Cheng,Mingzheng Xie,Qingfeng Cheng 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.59 No.-
Silver/silver chloride/exfoliated graphite (Ag/AgCl/EG) nano-photocatalyst was synthesized through precipitation and photoreduction processes. Afterwards, physicochemical properties of Ag/AgCl/EG were systematically studied by series of techniques. Results indicated that spherical-like Ag0 and AgCl with a diameter of 18.6 nm were deposited onto the surface of EG, resulting in the large surface area, strong visible absorbance and high charge separation efficiency. In addition, Ag/AgCl/EG exhibited high visible light photocatalytic (PC) activity for degradation of RhB (99.5%) and phenol (89.1%) solution. Also, the enhanced visible light PC mechanism was proposed and confirmed. Furthermore, Ag/AgCl/EG nano-photocatalyst performed good reusability even after six recycles utilization.
Yuqi Cui,Qi Meng,Xiaoyong Deng,Qiuling Ma,Huixuan Zhang,Xiaoli Li,Mingzheng Xie,Qingfeng Cheng,Xiuwen Cheng 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.43 No.-
In this study, Pt NCs/TiO2 NTAs photoelectrode was fabricated through anodization process, followed byrecycle pulse electrodeposition strategy. Subsequently, physicochemical properties of the resultingsamples were studied systematically. Results indicated that Pt NCs/TiO2 NTAs photoelectrode exhibitedintense light absorbance both in the UV and visible region, high transient photocurrent density of0.089 mA cm 2 and open circuit potential of 0.275 V cm 2. In addition, 98.3% of aspirin could beeliminated within 4 h Xenon illumination with the help of +0.4 V potential. Furthermore, it can beconcluded that two tentative pathways for PEC degradation of aspirin were proposed and confirmed.