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Catalytic conversion of glucose to small polyols over a binary catalyst of vanadium modified beta zeolite and Ru/C

Journal of Energy Chemistry 2019年第7期28卷 88-95页

作者： Joby Sebastian Mingyuan Zheng Xinsheng Li Jifeng Pang Chan Wang Tao Zhang Dalian Institute of Chemical Physics Chinese Academy of Sciences

Catalytic conversion of glucose, the most abundant carbohydrate, to chemicals of petroleum origin has great desirability in terms of sustainability and industrial implementation. In this work, we attempted to exploit the vanadium-based catalysts with high retro-aldol condensation(RAC) activity for the synthesis of small polyols from glucose. Vanadium species incorporated or anchored beta zeolites were found to work effectively in synergy with 1 Ru/AC to produce hydroxyacetone(HA) as the major product(34%)in a semi-continuously stirred tank reactor under 5% glucose concentration. Catalyst characterization by UV-vis and Raman spectral analysis revealed vanadium species mainly stayed in the incorporated form(tetrahedral) at 0.5% of loading and in the supported form(octahedral) at higher loadings up to 8%. Pyridine infrared spectra and temperature programmed desorption of NH3 revealed weak Lewis acid sites in dominance. Vanadium species in the catalysts displayed multiple catalytic roles(isomerization and RAC reaction, and synergism with the hydrogenation catalyst) in the synthesis of HA from glucose. Structureactivity correlation pointed out that the catalytic activity of vanadium species is not dependent on it coordination status, nevertheless, the adjacent vanadium atoms could possibly improve the isomerization rate over the RAC rate in favor of high yield of HA. The catalyst system is recyclable to at least five times without any considerable loss in its activity and structural integrity. The results presented here provide a promising route for the sustainable production of HA and polyols from carbohydrates by using a highly selective vanadium catalyst.

关键词： Vanadium glucose Retro-aldol condensation Polyols Hydroxyacetone

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Effective conversion of cellobiose and glucose to sorbitol using non-noble bimetallic NiCo/HZSM-5 catalyst

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Science China Chemistry 2018年第9期61卷 1167-1174页

作者： Bakht Zada Long Yan Yao Fu Hefei National Laboratory for Physical Science at the Microscale Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) CAS Key Laboratory of Urban Pollutant Conversion Anhui Province Key Laboratory for Biomass Clean Energy and Department of Chemistry University of Science and Technology of China

The tandem hydrolysis and hydrogenation of saccharides into sorbitol is an especially attractive reaction in the conversion of biomass. Here, an economical and efficient bimetallic catalyst for the transformation of glucose and cellobiose into sorbitol is reported. Non-precious metal based catalysts such as NiCo, Ni, and Co, were prepared via modified impregnation method, and NiCo/HZSM-5 showed superior performance for the synthesis of sorbitol(86.9% from cellobiose, 98.6% from D-glucose).Various characterizations, such as Brunner-Emmet-Teler(BET), X-ray diffraction(XRD), transmission electron microscopy(TEM) and X-ray photoelectron spectroscopy(XPS), confirmed that NiCo alloy formed and highly dispersed in NiCo/HZSM-5 catalyst. The high performance of fabricated catalyst would be attributed to the formation of nickel-cobalt alloy over HZSM-5 zeolite surface. High temperature and H_2 pressure were favorable for the tandem hydrolysis and hydrogenation reaction. Besides,the reaction pathway was also proposed based on the kinetics study. Cellobitol was detected as the intermediate in the reaction mixture. Furthermore, in the catalytic stability study, it was found that active metal species of NiCo/HZSM-5 were stable. The deactivation of catalyst would be due to the covering of acidic sites over NiCo/HZSM-5.

关键词： biomass sorbitol glucose cellobiose bimetallic catalyst

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Synthesis of MgO-doped ordered mesoporous carbons by Mg^(2+)-tannin coordination for efficient isomerization of glucose to fructose

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Green Energy & Environment 2023年第3期8卷 842-851页

作者： Junyan Fu Feng Shen Xiaoning Liu Xinhua Qi College of Environmental Science and Engineering Nankai UniversityNo.38Tongyan RoadJinnan DistrictTianjin300350China Agro-Environmental Protection Institute Ministry of Agriculture and Rural AffairsNo.31Fukang RoadNankai DistrictTianjin300191China

In-situ MgO-doped ordered mesoporous carbon(OMC@MgO)was fabricated by formaldehyde-free self-assembly method,in which biomass-derived tannin was used as carbon precursor replacing fossil-based phenolics,Mg^(2+)as both cross-linker and precursor of catalytic *** to~20 wt% MgO could be doped in the carbon skeleton with good dispersion retaining well-ordered mesoporous structures,while more MgO content(35 wt%)led to the failing in the formation of ordered mesoporous *** OMC@MgO possessed a high specific surface area(298.8 m^(2) g^(-1)),uniform pore size distribution(4.8 nm)and small crystallite size of MgO(1.73 nm)due to the confinement effect of ordered mesoporous *** OMC@MgO as the heterogeneous catalyst,a maximum fructose yield of 32.4% with a selectivity up to 81.1%was achieved from glucose in water(90℃,60 min),which is much higher than that obtained using the MgO doped active carbon via conventional post-impregnation method(26.5%yield with 58.3% selectivity).Higher reaction temperature(>90℃)resulted in decrease of selectivity due to the formation of *** designed OMC@MgO displayed tolerant to high initial glucose concentrations(10 wt%)and could remain good recyclability without significant loss of activity for three cycles.

关键词： glucose Fructose Isomerization Porous carbon Biomass Catalysis

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Effect of methyl tert-butyl ether on adipogenesis and glucose metabolism in vitro and in vivo

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Journal of Environmental Sciences 2019年第11期31卷 208-219页

作者： Yue Tang Qidong Ren Qing Wen Caixia Yu Xinni Xie Qing Hu Yuguo Du State Key Laboratory of Environmental Chemistry and Eco-toxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China School of Chemical Sciences University of Chinese Academy of Sciences Beijing 100049 China School of Environmental Science and Engineering Southern University of Science and Technology Shenzhen 518055 China

Methyl tert-butyl ether (MTBE),as a widely used gasoline additive,is suspected of being environmentally *** accumulates mainly in adipose tissue,but its effect on obesity or obesity-related metabolic disorders has not been well understood ***,we examined the effect of MTBE on the adipose function and the related metabolic processes with both 3T3-L1 cell line and C57BL/6J mice *** found that exposure to MTBE at the environmental relevant concentration (100 μmol/L) could significantly induce differentiation of preadipocyte and disturb insulin-stimulated glucose uptake of mature *** in vivo observation in male mice showed a positive correlation of visceral white adipose tissue (vWAT) expansion and cell size increase with MTBE treatment in 14 *** tolerance and insulin sensitivity tests demonstrated that MTBE at 1000 μg/(kg·day) disturbed the systemic glucose metabolism in a gender-specific manner,which might be partly attributed to the alterations of gut microbiota community at genus level with respect to Akkermansia,Clostridium XIVb,and *** summary,our study characterized the effect of MTBE on adipose tissue function and glucose homeostasis in vitro and in vivo,and revealed that systemic disorders of the glucose metabolism might be modulated by the related gut microbiota.

关键词： MTBE Adipogenesis glucose metabolism Metabolic disorder Gut microbiota

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Construction of OVA-stabilized fluorescent gold nanoclusters for sensing glucose

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Science China Chemistry 2015年第9期58卷 1508-1514页

作者： Lu-Liang Wang Juan Qiao Li Qi Xiao-Zhe Xu Dan Li Department of Chemistry and Research Institute for Biomedical and Advanced Materials Shantou University Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Analytical Chemistry for Living BiosystemsInstitute of Chemistry Chinese Academy of Sciences College of Chemistry Tianjin Normal University

Protein protected gold nanoclusters have outstanding physical and chemical properties that make them excellent scaffolds for the construction of novel chemical and biological probes. In this study, a simple one-pot synthesis method was proposed for the preparation of fluorescent probes based on ovalbumin-stabilized gold nanoclusters. This strategy allowed the generation of water-soluble gold nanoclusters within 5 min. The as-prepared fluorescent probe exhibited a red fluorescence emission at 625 nm, and good thermostability. The fluorescent probe was applied to measure glucose concentrations based on the hydrogen peroxide-induced fluorescence quenching principle, and showed favorable biocompatibility, high sensitivity and good selectivity. As a result of the advantageous properties and performance of this fluorescent probe, the present assay allowed for the selective determination of glucose in the range of 5.0×10-6 to 10.0×10-3 mol/L with a detection limit of 1.0×10?6 mol/L. Moreover, the glucose content in urinary samples was analyzed using the constructed fluorescent probe: this indicated the potential of the fluorescent gold nanoclusters for applications in biological and clinical diagnosis and therapy.

关键词： AuNCs Ovalbumin GOx glucose fluorescence

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Functionalized nanographene oxide/PEG/rhodamine B/gold nanocomposite for electrochemical determination of glucose

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Journal of Materials Science & Technology 2022年第27期122卷 141-147页

作者： Wenhao Qian Tao Song Mao Ye Xiaoyu Huang Yongjun Li Bingjie Hao Department of Stomatology Shanghai Xuhui District Dental Center 500 Fenglin RoadShanghai 200032China Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules Center for Excellence in Molecular SynthesisChinese Academy of SciencesShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesShanghai 200032China

Diabetes,one of the most serious metabolism diseases,has continually plagued human beings so that timely monitored blood glucose level is very *** nanoparticles(Au NPs)have been considered as potential substitutes for non-enzymatic sensors,due to their unusual physicochemical property and efficient catalytic ***,we prepared a facial platform for Au NPs to maintain good dispersity and inherent physicochemical *** this special platform(SH-n GO-PEG-Rh B),nanographene oxide(n GO)was employed as an ideal base,which provided adequate carboxyls for conjugating with poly(ethylene glycol)(PEG),and enough epoxy groups for thiol active site.A functional dye(rhodamine B)with preferable fluorescence properties was also introduced into this *** NPs were then aptly in situ grown on the platform via reduction of HAuCl_(4) under mild conditions,providing Au NPs@SHn GO-PEG-Rh *** nanocomposite was cast on a glassy carbon electrode(GCE)conveniently,yielding GCE/Au NPs@SH-n GO-PEG-Rh ***,as shown by cyclic voltammetry(CV)and ready-state amperometry,GCE/Au NPs@SH-n GO-PEG-Rh B was capable of electrochemical determination of glucose so as to provide an efficient sensor for glucose determination with dye tracer.

关键词： Nano-graphene oxide Gold nanoparticles glucose Biosensor Rhodamine B

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A new sulfur-doped source and synergistic effect with nitrogen for carbon dots produced from glucose

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Chinese Physics B 2019年第12期28卷 345-351页

作者： Lige Fu Yuehong Yin Guohua Cao Pingping Wu Jian Wang Lingling Yan Baoqing Zhang Ming Li School of Physics and Electronic Information Henan Polytechnic UniversityJiaozuo 454000China School of Materials Science and Engineering Henan Polytechnic UniversityJiaozuo 454000China

The nitrogen and sulfur co-doped carbon dots(N, S-CDs) with increased luminescence were synthesized by a hydrothermal process in one green pot by using glucose, and a new sulfur-doping source of sodium sulfite was *** synergistic effect of the N and S groups was well discussed through the structure analysis of Fourier transform infrared spectra and x-ray photoelectron spectra. The surface states of N, S-CDs embody more complicated functional groups, and S element exists as –SSO3, –C–SO3, and SO-42groups due to the introduction of sodium sulfite. The sulfur-containing groups passivate the surface of the CDs, and the relatively high sulfur groups may reduce the non-radiation centers. The fluorescence is affected by the hydroxyl group of the solvent. The quenching of Fe3+ ion to fluorescence and the sensitivity of fluorescence to p H were also investigated.

关键词： carbon dots glucose sodium sulfite nitrogen and sulfur codoping synergistic effect

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Universal production of functionalized 2D nanomaterials via integrating glucose-assisted mechanochemical exfoliation and cosolvent-intensified sonication exfoliation

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Nano Research 2023年第4期16卷 5033-5041页

作者： Zhi-Guo Wang Hui-Yuan Shen Ruo-Lin Yu Jie-Feng Gao Guo-Qiang Zhang Chun Xu Jun Lei Ji-Guang Du Jia-Zhuang Xu Zhong-Ming Li College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065China School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China College of Physics Sichuan UniversityChengdu 610065China

Two-dimensional(2D)nanomaterials have aroused immense attention in extensive applications due to their intriguing physical and chemical ***,there is a formidable challenge to prepare few-layered and functionalized 2D nanomaterials in an effective and universal ***,we developed an integrated strategy of glucose-assisted mechanochemical exfoliation and cosolvent-intensified sonication exfoliation to effectively exfoliate and functionalize 2D *** exfoliation of boron nitride(BN)as an example,the production yield and functionalization ratio of BN nanosheets(BNNSs)reached 47.5%and 25.8 wt.%,188%and 16%higher than that of BNNSs without sonication exfoliation,*** introduction of glucose not only augmented the friction force between adjacent BN layers to promote the efficiency of ball-milling-driven exfoliation supported by density functional theory calculation,but also reacted with active edges of BNNSs for ***,cosolventintensified sonication exfoliation strongly stabilized exfoliated BNNSs,obviously boosting the exfoliation *** proposed method is universal for preparing various 2D nanomaterials like molybdenum disulfide,tungsten disulfide,and graphene *** thin plate structure and high functionalization ratio enabled the release of property superiorities of 2D *** work offers a promising prototype to realize mass production of functionalized 2D nanomaterials.

关键词： two-dimensional materials glucose cosolvent exfoliation functionalization

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High-performance non-enzymatic glucose sensor based on Co_(3)O_(4)/rGO nanohybrid

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Rare Metals 2023年第9期42卷 3046-3053页

作者： Ling-Yun Xiong You-Joong Kim Won-Cheol Seo Han-Kyu Lee Woo-Chul Yang Wan-Feng Xie Department of Physics Dongguk UniversitySeoul04620South Korea School of Electronics and Information Industry Joint Center for Ocean Observation and Broadband CommunicationQingdao UniversityQingdao266071China

There has been substantial interest in designing and fabricating electrochemical non-enzyme sensors for glucose detection with a focus on the nanocomposites used between metal oxide and the two-dimensional *** this work,Co_(3)O_(4)/reduced graphene oxide(rGO)nanocomposite was obtained and used as a modified electrochemical electrode for the detection of trace *** to the results,the electrocatalytic performances of Co_(3)O_(4)nanoparticles for the oxidation of glucose were substantially enhanced with the addition of a small amount of r ***,the Co_(3)O_(4)/r GO modified electrode exhibited a sensitivity of 82μA·mmol^(-1)·cm^(-2),a detection limit of 50μmol·L^(-1)(signal noise ratio(S/N)=3),and a fast response time of about 1 s under optimal *** enhanced performances of the Co_(3)O_(4)/r GO modified electrode are attributable to the high absorption oxygen(O_(Ads))and synergistic effect between Co_(3)O_(4)and r *** results indicate that Co_(3)O_(4)/r GO nanocomposite is a promising candidate for being used as the active material in real-world electrochemical biosensors.

关键词： Co_(3)O_(4) Reduced graphene oxide(rGO) glucose Electrocatalytic

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Integration of microfluidic injection analysis with carbon nanomaterials/gold nanowire arrays-based biosensors for glucose detection

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Science Bulletin 2016年第6期61卷 473-480页

作者： Yongqiang Qin Jiewu Cui Yong Zhang Yan Wang Xinyi Zhang Hongmei Zheng Xia Shu Bowen Fu Yucheng Wu School of Materials Science and Engineering Hefei Universityof Technology Hefei 230009 China Key Laboratory of Advanced Functional Materials and Devicesof Anhui Province Hefei 230009 China

Carbon nanotubes(CNTs) and reduced graphene oxide(r GO) nanosheets were utilized to construct glucose biosensors in combination with gold nanowire arrays(Au NWAs), and microfluidic injection analysis driven by gravity force was used to investigate the performances of as-prepared glucose biosensors. The results demonstrated glucose biosensors based on carbon nanomaterials/Au NWAs presented excellent performance at low working potential of-0.2 V versus Ag/Ag Cl(3 mol/L KCl), such as high sensitivity, good anti-interference ability and high throughput(45 h^(-1)). The glucose biosensor based on glucose oxidase(GOx)–CNT–Au NWAs showed a wide linear range from 100 to 3,000 lmol/L with a sensitivity of 4.12 l A/cm^2 mmol/L. Furthermore, the linear range and sensitivity of GOx–r GO–Au NWAs-based glucose biosensor were 50–4,000 lmol/L and 8.59 l A/(cm^2 mmol/L), respectively, which were better than those of glucose biosensor based on GOx–CNT–Au NWAs,suggesting r GO nanosheets in combination with Au NWAs being a good platform for the construction of glucose biosensors.

关键词： Carbon nanotube Reduced graphene oxide Gold nanowire array Microfluidics injection analysis glucose

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