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Facile and effective synthesis strategy for terbium-doped hydroxyapatite toward photoelectric devices and flexible functional fibers

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Rare Metals 2024年第4期43卷 1713-1723页

作者： Xiao-Dong Zhang Kun Nie Zi-Yao Hu Ran-Ran Zhou Xiu-Qiang Duan Wu-Bin Dai Song-Song Nie Song-Jun Yao Luo-Xin Wang Le-Fu Mei Hua Wang Yi-Yi Yao Xiao-Xue Ma key laboratory for New Textile Materials and Applications and State key laboratory of New Textile Materials and Advanced processing technology School of Materials Science and EngineeringWuhan Textile University key laboratory of Testing and Tracing of Rare Earth products for State Market Regulation Jiangxi University of Science and Technology Hubei key laboratory of Plasma Chemistry and Advanced Materials and key laboratory of Green chemical Engineering Process of Ministry of Education Wuhan Institute of Technology Xiangyang Power Supply Company Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid WastesNational Laboratory of Mineral Materials School of Materials Science and Technology China University of Geosciences (Beijing) Department of Chemistry and Biochemistry University of California Los Angeles

As a material with good biocompatibility,hydroxyapatite（HAP） can have optical properties after doping with various rare earth ions.As a biocompatible fluorescent material,doped HAP could have broad applications in biological probes,drug delivery,optoelectronic materials,fluorescence anti-counterfeiting,and other aspects.In this paper,we put forward the preparation of HAP doped with terbium（Ⅲ） ions(Tb3+) by hydrothermal co-precipitation.By controlling the Tb3+doping content in reaction and the reaction time,the changes in HAP's structure,morphology,and luminescence properties under different conditions were studied.When the doping amount of Tb3+reached an optimal value,the dipole-quadrupole would occur and the concentration would be quenched.The control experiment showed that the optimal Tb3+content was 7.5 × 10-5mol,which showed the best fluorescence performance.HAP,a non-luminous material,was rarely used in the field of fluorescent anti-counterfeiting and photoelectric devices.We proposed to prepare a luminescent aramid/polyphenylene sulfide（ACFs/PPS） fiber paper and a new light-emitting diode（LED） using the Tb-doped HAP phosphor.The composite sample exhibited an excellent stability and fluorescence performance,which also demonstrated a possibility of HAP applications in anticounterfeiting and photoelectric.The introduction of Tb3+dopant HAP was done to give HAP optical properties and broaden the application range of HAP.

关键词： Hydroxyapatite Rare earth luminescence Photoelectric device Aramid Polyphenylene sulfide fiber paper Luminescent fiber

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The role of flavonoids in mitigating food originated heterocyclic aromatic amines that concerns human wellness

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Food Science and Human Wellness 2023年第4期12卷 975-985页

作者： Hui Teng Hongting Deng Chang Zhang Hui Cao Qun Huang Lei Chen College of Food Science and technology Guangdong Ocean UniversityGuangdong Provincial Key Laboratory of Aquatic Product Processing and SafetyGuangdong Province Engineering Laboratory for Marine Biological ProductsGuangdong Provincial Engineering Technology Research Center of SeafoodKey Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education InstitutionZhanjiang 524088China Faculty of Food Science and technology University of VigoVigo 36310Spain Meat processing key laboratory of Sichuan Province School of Food and Biological EngineeringChengdu UniversityChengdu 610106China

Meat products are an important part in our daily diet,providing valuable nutrients for the human body.However,heating processes cause the meat to become more appetizing with changes in texture,appearance,flavor,and chemical properties by the altering of protein structure and other ingredients.As one kind of cooking-induced contaminants,heterocyclic aromatic amines(HAAs)are widely present in protein aceous food products with strong carcinogenic and mutagenic properties.In order to promote the safety of traditional meat products,this review focused on the formation,metabolism,biological monitoring and inhibitory mechanism of HAA.An overview of the formation pathways,hazards,and control methods of HAAs during food processing in recent years was studied,aiming to provide some valuable information for exploring effective methods to inhibit the production of associated hazards during food processing.Systematic selection of different types of flavonoids to explore their effects on the formation of HAAs in an actual barbecue system can provide theoretical reference for effectively controlling the formation of HAAs and reducing their harm to human health.

关键词： Heterocyclic aromatic amines Flavonoids Hazardous control Precursors

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Self-reducing bifunctional Ni-W/SBA-15 catalyst for cellulose hydrogenolysis to low carbon polyols

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Journal of Energy Chemistry 2016年第3期25卷 434-444页

作者： Zhuqian Xiao Qiuwei Ge Chuang Xing Chengjun Jiang Sheng Fang Jianbing Ji Jianwei Mao School of biological and chemical Engineering Zhejiang University of Science and Technology zhejiang provincial key laboratory of chemical and biological processing technology of farm products Collaborative Innovation Center of Agricultural biological Resources Biochemical Manufacturing of zhejiang Province College of chemical Engineering Zhejiang University of Technology Shaoxing University Yuanpei College

A series of self-reducing bifunctional Ni-W/SBA-15 catalysts were synthesized using biomass-based carbon source as the reducing agent without conventional further reduction step. The self-reducing catalysts were performed on the hydrogenolysis of cellulose to low carbon polyols. The effects of calcination temperature and metallic loading contents for cellulose hydrogenolysis reaction were investigated detailedly.The optimal calcination temperature was found to be 673 K by TG analysis. The active metal nanoparticles with a better dispersion were observed using SEM and element mapping technology. The yield of low carbon polyols using the catalyst with the receipt of 10%Ni-15%W/SBA-15-673 K can reach as high as68.14%, of which the ethylene glycol(EG) accounts for 61.04%.

关键词： Cellulose Hydrogenolysis Low carbon polyols Self-reducing catalyst

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Pocket Modification of x-Amine Transaminase AtATA for Overcoming the Trade-Off Between Activity and Stability Toward 1-Acetonaphthone

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Engineering 2023年第11期 203-214页

作者： Jiaren Cao Fangfang Fan Changjiang Lyu Sheng Hu Weirui Zhao Jiaqi Mei Shuai Qiu Lehe Mei Jun Huang key laboratory of chemical and biological processing technology for farm products of zhejiang Province Zhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical ManufacturingSchool of Biological and Chemical EngineeringZhejiang University of Science and TechnologyHangzhou 310023China School of biological and chemical Engineering Ningbo Tech UniversityNingbo 315100China Hangzhou Huadong Medicine Group Co.Ltd. Hangzhou 310011China College of chemical and biological Engineering Zhejiang UniversityHangzhou 310027China Jinhua Advanced Research Institute Jinhua 321019China

Amine transaminases(ATAs)catalyze the asymmetric amination of prochiral ketones or aldehydes to their corresponding chiral amines.However,the trade-off between activity and stability in enzyme engineering represents a major obstacle to the practical application of ATAs.Overcoming this trade-off is important for developing robustly engineered enzymes and a universal approach for ATAs.Herein,we modified the binding pocket of co-ATA from Aspergillus terreus(AtATA)to identify the key amino acid residues controlling the activity and stability of AtATA toward 1-acetonaphthone.We discovered a structural switch comprising four key amino acid sites(R128,V149,L182,and L187),as well as the"best"mutant(AtATAD224K/V149A/L182 F/L187F;termed M4).Compared to the parent enzyme AtATAD224K(AtATAPa),M4 increased the catalytic efficiency(k_(cat)/K_(m)^(1-acetonaphthone),where kcatis the constant of catalytic activities and is 10.1 min^(-1),K_(m)^(1-acetonaphthoneis) Michaelis-Menten constant and is 1.7 mmol·L^(-1))and half-life(t1/2)by 59-fold to 5.9 L·min^(-1)·mmol-1and by 1.6-fold to 46.9 min,respectively.Moreover,using M4 as the biocatalyst,we converted a 20 mmol·L^(-1)aliquot of 1-acetonaphthone in a 50 mL scaled-up system to the desired product,(R)-(+)-1(1-naphthyl)ethylamine((R)-NEA),with 78%yield and high enantiomeric purity(R>99.5%)within 10 h.M4 also displayed significantly enhanced activity toward various 1-acetonaphthone analogs.The related structural properties derived by analyzing structure and sequence information of robust ATAs illustrated their enhanced activity and thermostability.Strengthening of intramolecular interactions and expansion of the angle between the substratebinding pocket and the pyridoxal 5’-phosphate(PLP)-binding pocket contributed to synchronous enhancement of ATA thermostability and activity.Moreover,this pocket engineering strategy successfully transferred enhanced activity and thermostability to three other ATAs,which exhibited 8%-22%sequence similarity with AtATA.This research has important impl

关键词： Trade-off Co-evolution Amine transaminase (R)-(+)-1(1-naphthyl)ethylamine

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L(+)-酒石酸生产菌株扩展青霉WH-3的筛选

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Journal of zhejiang University-Science B(Biomedicine & Biotechnology) 2020年第10期21卷 835-840页

作者： Wen-na BAO Yi CHEN Hong-xiu LIAO Hang CHEN Shi-wang LIU Yong LIU School of biological and chemical Engineering Zhejiang University of Science and TechnologyHangzhou 310023China zhejiang provincial key laboratory for chemical and biological processing technology of farm products Hangzhou 310023China1

L(+)-酒石酸生产菌株扩展青霉WH-3的筛选目的:筛选产L(+)-酒石酸的新真菌菌株。创新点:首次筛选获得能同时在酸性和高底物浓度下转化生产L(+)-酒石酸的菌株。方法:利用电镜、内转录间隔区(ITS)序列、核磁共振、质谱和旋光度对筛选菌株... 详细信息

L(+)-酒石酸生产菌株扩展青霉WH-3的筛选目的:筛选产L(+)-酒石酸的新真菌菌株。创新点:首次筛选获得能同时在酸性和高底物浓度下转化生产L(+)-酒石酸的菌株。方法:利用电镜、内转录间隔区(ITS)序列、核磁共振、质谱和旋光度对筛选菌株进行鉴定,并优化其发酵条件,研究其酶学性质。结论:扩展青霉WH-3的60%活性位于菌丝体中,且该菌丝体能在酸性(pH4.5)、高浓度底物中转化,具有高转化率和高立体特异性,为L(+)-酒石酸的生产提供新的催化剂。

关键词： L(+)-酒石酸:扩展青霉顺式环氧琥珀酸水解酶:筛菌

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Modeling and Optimization of Ethane Steam Cracking Process in An Industrial Tubular Reactor with Improved Reaction Scheme

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China Petroleum processing & Petrochemical technology 2020年第4期22卷 117-125页

作者： Mohsin Ali Liao Zuwei Yao Yang Sun Jingyuan Jiang Binbo Wang Jingdai Yang Yongrong zhejiang provincial key laboratory of Advanced chemical Engineering Manufacture technology College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027 State key laboratory of chemical Engineering College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027

Ethane steam cracking process in an industrial reactor was investigated.An one-demsional(1D)steady-state model was developed firstly by using an improved molecular reaction scheme and was then simulated in Aspen Plus.A comparison of model results with industrial data and previously reported results showed that the model can predict the process kinetics more accurately.In addition,the validated model was used to study the effects of different process variables,including coil outlet temperature(COT),steam-to-ethane ratio and residence time on ethane conversion,ethylene selectivity,products yields,and coking rate.Finally,steady-state optimization was conducted to the operation of industrial reactor.The COT and steam-to-ethane ratio were taken as decision variables to maximize the annual operational profit.

关键词： ethane steam cracking tubular reactor Aspen Plus molecular reaction scheme process simulation process optimization

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双头菌WH-1环氧乙烷二酸水解酶的克隆和酶学性质的研究（英文）

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Journal of zhejiang University-Science B(Biomedicine & Biotechnology) 2019年第12期20卷 995-1002页

作者： Wen-na BAO Zi-sheng LUO Shi-wang LIU Yuan-feng WU Pei-lian WEI Gong-nian XIAO Yong LIU College of Biosystems Engineering and Food Science Zhejiang UniversityHangzhou 310058China School of biological and chemical Engineering Zhejiang University of Science and TechnologyHangzhou 310023China zhejiang provincial key laboratory for chemical and biological processing technology of farm products Hangzhou 310023China

目的:克隆双头菌WH-1环氧乙烷二酸水解酶(ORCH)的基因并研究其酶学性质。创新点:首次获得双头菌ORCH的基因,且该酶催化效率高,热稳定性好。方法:柱层析纯化ORCH后,进行酶学性质研究;通过蛋白末端测序和PCR获得其基因序列;通过二级结构... 详细信息

目的:克隆双头菌WH-1环氧乙烷二酸水解酶(ORCH)的基因并研究其酶学性质。创新点:首次获得双头菌ORCH的基因,且该酶催化效率高,热稳定性好。方法:柱层析纯化ORCH后,进行酶学性质研究;通过蛋白末端测序和PCR获得其基因序列;通过二级结构预测和多序列比对进行ORCH序列分析。结论:来源于双头菌WH-1的ORCH是迄今报道的催化效率和热稳定性最好的ORCH,为L(+)-2,3-二羟基丁二酸的生产提供了新的催化剂。

关键词：环氧乙烷二酸水解酶 L(+)-2,3-二羟基丁二酸酶学性质克隆

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口袋改造策略克服ω氨基转移酶AtATA对1-乙酰基萘活性和稳定性之间的“trade-off”效应（英文）

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Engineering 2023年第11期 203-214页

作者： Jiaren Cao Fangfang Fan Changjiang Lyu Sheng Hu Weirui Zhao Jiaqi Mei Shuai Qiu Lehe Mei Jun Huang key laboratory of chemical and biological processing technology for farm products of zhejiang Province Zhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing School of Biological and Chemical Engineering Zhejiang University of Science and Technology School of biological and chemical Engineering Ningbo Tech University Hangzhou Huadong Medicine Group Co.Ltd. College of chemical and biological Engineering Zhejiang University Jinhua Advanced Research Institute

Amine transaminases(ATAs) catalyze the asymmetric amination of prochiral ketones or aldehydes to their corresponding chiral amines.However,the trade-off between activity and stability in enzyme engineering represents a major obstacle to the practical application of ATAs.Overcoming this trade-off is important for developing robustly engineered enzymes and a universal approach for ATAs.Herein,we modified the binding pocket of co-ATA from Aspergillus terreus(AtATA) to identify the key amino acid residues controlling the activity and stability of AtATA toward 1-acetonaphthone.We discovered a structural switch comprising four key amino acid sites(R128,V149,L182,and L187),as well as the "best" mutant(AtATAD224K/V149A/L182 F/L187F;termed M4).Compared to the parent enzyme AtATAD224K(AtATAPa),M4 increased the catalytic efficiency(kcat/Km1-acetonaphthone,where kcatis the constant of catalytic activities and is 10.1 min-1,Km1-acetonaphthoneis Michaelis-Menten constant and is 1.7 mmol·L-1) and half-life(t1/2) by 59-fold to 5.9 L·min-1·mmol-1and by 1.6-fold to 46.9 min,respectively.Moreover,using M4 as the biocatalyst,we converted a 20 mmol·L-1aliquot of 1-acetonaphthone in a 50 mL scaled-up system to the desired product,(R)-(+)-1(1-naphthyl)ethylamine((R)-NEA),with 78% yield and high enantiomeric purity(R> 99.5%) within 10 h.M4 also displayed significantly enhanced activity toward various 1-acetonaphthone analogs.The related structural properties derived by analyzing structure and sequence information of robust ATAs illustrated their enhanced activity and thermostability.Strengthening of intramolecular interactions and expansion of the angle between the substratebinding pocket and the pyridoxal 5’-phosphate(PLP)-binding pocket contributed to synchronous enhancement of ATA thermostability and activity.Moreover,this pocket engineering strategy successfully transferred enhanced activity and thermostability to three other ATAs,which exhibited 8%-22%sequence similarity with AtATA.This research has important implications for overc

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One-step conversion of syngas to light olefins over bifunctional metal-zeolite catalyst

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Chinese Journal of chemical Engineering 2021年第8期34卷 101-110页

作者： Ce Du Linet Gapu Chizema Emmerson Hondo Mingliang Tong Qingxiang Ma Xinhua Gao Ruiqin Yang Peng Lu Noritatsu Tsubaki zhejiang provincial key Lab for Chem.&Bio.processing technology of farm Product School of Biological and Chemical EngineeringZhejiang University of Science and TechnologyHangzhou 310023China Department of Applied Chemistry School of EngineeringUniversity of ToyamaGofuku 3190Toyama 930-8555Japan State key laboratory Cultivation Base of Natural Gas Conversion Ningxia UniversityYinchuan 750021China

Light olefins(C_(2)–C_(4))are fundamental building blocks for the manufacture of polymers,chemical intermediates,and solvents.In this work,we realized a composite catalyst,comprising MnxZry oxides and SAPO-34 zeolite,which can convert syngas(CO+H_(2))into light olefins.MnxZry oxide catalysts with different Mn/Zr molar ratios were facilely prepared using the coprecipitation method prior to physical mixing with SAPO-34 zeolite.The redox properties,surface morphology,electronic state,crystal structure,and chemical elemental composition of the catalysts were examined using H_(2)-TPR,SEM,XPS,XRD,and EDS techniques,respectively.Tandem reactions involved activation of CO and subsequent hydrogenation over the metal oxide catalyst,producing methanol and dimethyl ether as the main reaction intermediates,which then migrated onto SAPO-34 zeolite for light olefins synthesis.Effects of temperature,pressure and reactant gas flow rate on CO conversion and light olefins selectivity were investigated in detail.The Mn_(1)Zr_(2)/SAPO-34 catalyst(Mn/Zr ratio of 1:2)attained a CO conversion of 10.8%and light olefins selectivity of 60.7%,at an optimized temperature,pressure and GHSV of 380℃,3 MPa and 3000h^(−1) respectively.These findings open avenues to exploit other metal oxides with CO activation capabilities for a more efficient syngas conversion and product selectivity.

关键词： Catalyst C-C coupling CO activation Hydrogenation Light olefins Syngas

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Sputtered nano-cobalt on H-USY zeolite for selectively converting syngas to gasoline

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Journal of Energy Chemistry 2015年第5期24卷 637-641页

作者： Peng Lu Jian Sun Pengfei Zhu Takayuki Abe Ruiqin Yang Akira Taguchi Tharapong Vitidsant Noritatsu Tsubaki zhejiang provincial key Lab for Chem. & Bio. processing technology of farm Product School of Biological and Chemical Engineering Zhejiang University of Science and Technology Department of Applied Chemistry School of Engineering University of Toyama Dalian National laboratory for Clean Energy (DNL) Dalian Institute of Chemical Physics Chinese Academy of Sciences Hydrogen Isotope Research Center University of Toyama Department of chemical technology Faculty of Science Chulalongkorn University

Selectively converting CO and H2 to gasoline product （isoparaffin and olefin） in one step still remains a great challenge. We demonstrate effective H-USY zeolite supported nano-cobalt bifunctional catalysts for this catalytic reaction, which are prepared by the novel physical sputtering process. Particles of the sputtered cobalt exist in nano-level and are well-dispersed on acid USY zeolite. Easy activation of the loaded nano-cobalt is also achieved in a low-temperature hydrogen reduction atmosphere. In the tandem catalytic reaction, the sputtered bifunctional Co/USY catalyst exhibits a much higher CO conversion and higher isoparaffin selectiv- ity than the conventional impregnated one. Compared with H-Mor, H-Beta and other zeolites supported catalysts, H-USY zeolite supported cobalt catalyst shows the clearest promotional effect on the activity of FischerTropsch synthesis. The described synthesis herein provides a new pathway to solve the problem caused by the strong metal-support interaction （MSI） in heterogeneous catalysis.

关键词： Cobalt USY Zeolite Fischer-Tropsch synthesis Hydrocarbon

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