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Activation of sulfite by metal-organic framework-derived cobalt nanoparticles for organic pollutants removal

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Journal of Environmental Sciences 2023年第2期124卷 350-359页

作者： Xianjie Feng Deming Wu Xueyi Shen Yu Guo Yangyang Lv Aihua Xu Xiaoxia Li hubei key laboratory of biomass fibers and eco-dyeing and finishing Wuhan Textile UniversityWuhan 430200China School of Chemistry and Chemical Engineering Wuhan Textile UniversityWuhan 430200China School of Environmental Engineering Wuhan Textile UniversityWuhan 430200China

Sulfite(SO_(3)^(2−))activation is one of the most potential sulfate-radical-based advanced oxidation processes,and the catalysts with high efficiency and low-cost are greatly *** this study,the cobalt nanoparticles embedded in nitrogen-doped graphite layers(Co@NC),were used to activate SO32−for removal of Methyl Orange in aqueous *** Co@NC catalysts were synthesized via pyrolysis of Co^(2+)-based metal-organic framework(Co-MOF),where CoO was firstly formed at 400℃ and then partially reduced to Co nanoparticles embedded in carbon layers at 800℃.The Co@NC catalysts were more active than other cobaltbased catalysts such as Co^(2+),Co_(3)O_(4) and CoFe_(2)O_(4),due to the synergistic effect of metallic Co and CoxOy.A series of chain reaction between Co species and dissolved oxygen was established,with the production and transformation of SO_(3)•−,SO_(5)^(2−),and subsequent active radicals SO_(4)•−and HO•.In addition,HCO_(3)−was found to play a key role in the reaction by complexing with Co species on the surface of the *** results provide a new promising strategy by using the Co@NC catalyst for SO3_(2)−oxidation to promote organic pollutants degradation.

关键词： Sulfite activation Co-MOF(Co^(2+)-based metal organic frameworks) Nitrogen-doped carbon Bicarbonate Sulfate radical

Lignin-derived carbon with pyridine N-B doping and a nanosandwich structure for high and stable lithium storage

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CARBON ENERGY 2024年第8期6卷 232-247页

作者： Wu, Dichao Li, Jiayuan Zhao, Yuying Wang, Ao Zhang, Gaoyue Jiang, Jianchun Fan, Mengmeng Sun, Kang Chinese Acad Forestry Inst Chem Ind Forest Prod Key Lab Biomass Energy & Mat Natl Engn Lab Biomass Chem UtilizatKey & Open Lab Nanjing Jiangsu Peoples R China Nanjing Forestry Univ Coll Chem Engn Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo Int Innovat Ctr Forest Chem & Mat Nanjing Peoples R China Chinese Acad Forestry Inst Chem Ind Forest Prod Key Lab Biomass Energy & Mat Natl Engn Lab Biomass Chem UtilizatSFAKey & Open Nanjing 210042 Jiangsu Peoples R China Tsinghua Univ Dept Chem Beijing Peoples R China Huaqiao Univ Acad Adv Carbon Convers Technol Fujian Prov Key Lab Biomass Low Carbon Convers Xiamen Peoples R China Chinese Acad Sci Xinjiang Lihua Inst Technol Urumqi Peoples R China Nanjing Forestry Univ Coll Chem Engn Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo Int Innovat Ctr Forest Chem & Mat Nanjing 210037 Peoples R China Southeast Univ Sch Energy & Environm Nanjing Peoples R China

biomass-derived carbon is a promising electrode material in energy storage devices. However, how to improve its low capacity and stability, and slow diffusion kinetics during lithium storage remains a challenge. In this research, we propose a "self-assembly-template" method to prepare B, N codoped porous carbon (BN-C) with a nanosandwich structure and abundant pyridinic N-B species. The nanosandwich structure can increase powder density and cycle stability by constructing a stable solid electrolyte interphase film, shortening the Li+ diffusion pathway, and accommodating volume expansion during repeated charging/discharging. The abundant pyridinic N-B species can simultaneously promote the adsorption/desorption of Li+/PF6- and reduce the diffusion barrier. The BN-C electrode showed a high lithium-ion storage capacity of above 1140 mAh g-1 at 0.05 A g-1 and superior stability (96.5% retained after 2000 cycles). Moreover, owing to the synergistic effect of the nanosandwich structure and pyridinic N-B species, the assembled symmetrical BN-C//BN-C full cell shows a high energy density of 234.7 W h kg-1, high power density of 39.38 kW kg-1, and excellent cycling stability, superior to most of the other cells reported in the literature. As the density functional theory simulation demonstrated, pyridinic N-B shows enhanced adsorption activity for Li+ and PF6-, which promotes an increase in the capacity of the anode and cathode, respectively. Meanwhile, the relatively lower diffusion barrier of pyridinic N-B promotes Li+ migration, resulting in good rate performance. Therefore, this study provides a new approach for the synergistic modulation of a nanostructure and an active site simultaneously to fabricate the carbon electrode material in energy storage devices. B, N codoped porous carbon (BN-C) with a nanosandwich structure and abundant pyridinic N-B species was prepared using the "self-assembly-template" method. Owing to the synergistic effect of the nanostructure and pyr

关键词： high cycling stability high energy density lithium-ion batteries pyridinic N-B species sandwich structure carbon nanosheet HIGH-ENERGY DENSITY ANODE MATERIALS ION CAPACITORS DEFECT-RICH NITROGEN PERFORMANCE BORON NANOSHEETS MICROSPHERES FABRICATION

Safety assessment of a novel marine multi-stress-tolerant yeast Meyerozyma guilliermondii GXDK6 according to phenotype and whole genome-sequencing analysis

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Food Science and Human Wellness 2024年第4期13卷 2048-2059页

作者： Xueyan Mo Mengcheng Zhou Yanmei Li Lili Yu Huashang Bai Peihong Shen Xing Zhou Haojun Zhu Huijie Sun Ru Bu Chengjian Jiang State key laboratory for Conservation and Utilization of Subtropical Agro-Bioresources Guangxi Research Center for Microbial and Enzyme Engineering TechnologyCollege of Life Science and TechnologyGuangxi UniversityNanning 530004China National Engineering Research Center for Non-Food Biorefinery State Key Laboratory of Non-Food Biomass and Enzyme TechnologyGuangxi Research Center for Biological Science and TechnologyGuangxi Academy of SciencesNanning 530007China Guangxi key laboratory for Green Processing of Sugar Resources College of Biological and Chemical EngineeringGuangxi University of Science and TechnologyLiuzhou 545006China

The application of microorganisms as probiotics is limited due to lack of safety ***,a novel multi-stress-tolerant yeast Meyerozyma guilliermondii GXDK6 with aroma-producing properties was identified from marine mangrove *** safety and probiotic properties were assessed in accordance with phenotype and whole-genome sequencing *** showed that the genes and phenotypic expression of related virulence,antibiotic resistance and retroelement were rarely *** morphogenesis genes(SIT4,HOG1,SPA2,ERK1,ICL1,CST20,HSP104,TPS1,and RHO1)and phospholipase secretion gene(VPS4)were *** hyphae and phospholipase were *** one retroelement(Tad1-65_BG)was *** biogenic amines(BAs)encoding genes were absent,except for spermidine synthase(JA9_002594),spermine synthase(JA9_004690),and tyrosine decarboxylase(inx).The production of single BAs and total BAs was far below the food-defined ***6 had no resistance to common antifungal *** enzymes,such as gelatinase,DNase,hemolytic,lecithinase,and thrombin were *** toxicity test with mice demonstrated that GXDK6 is ***6 has a good reproduction ability in the simulation gastrointestinal ***6 also has a strong antioxidant ability,β-glucosidase,and inulinase *** sum up,GXDK6 is considered as a safe probiotic for human consumption and food fermentation.

关键词： Meyerozyma guilliermondii Safety assessment Probiotics Marine mangrove microorganisms Whole-genome sequencing analysis

Organic interfacial engineering of gold nanowires for selective glycerol electrooxidation

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Chinese Chemical Letters 2024年第3期35卷 502-507页

作者： Zhe Wang Qingling Hong Boqiang Miao Tianjiao Wang Yu Ding Pujun Jin Pei Chen Yu Chen key laboratory of Macromolecular Science of Shaanxi Province Key Laboratory of Applied Surface and Colloid Chemistry(Ministry of Education)Shaanxi Key Laboratory for Advanced Energy DevicesSchool of Materials Science and EngineeringShaanxi Normal UniversityXi'an 710062China

The selective electrochemical conversion of glycerol into value-added products is a green and sustainable strategy for the biomass *** this work,Au nanowires(Au-NW)modified with polyethyleneimine(PEI)molecule(Au-NW@PEI)is obtained by an up-bottom post-modification *** characterization,molecular dynamics simulation and density functional theory demonstrate that the loose-packed PEI monolayer firmly and uniformly distribute on the Au-NW surface due to the strong Au-N *** experiments and product analysis display that PEI modification significantly enhance the electro-activity of Au-NW for the glycerol electro-oxidation reaction(GEOR)due to the electronic ***,the steric hindrance and electrostatic effect of PEI layer make the optimizing adsorption of intermediates ***,the selectivity of C3 product glyceric acid over Au-NW@PEI is increased by nearly 20%.The work thus indicates that the rational design of metal-organic interface can effectively elevate the electro-activity and selectivity of Au nanostructures,which may have wide application in biomass development.

关键词： Glycerol electrooxidation reaction Organic interface engineering Gold-based nanomaterials Electrocatalysis Selectivity

Enhancement in the Hg^(0) oxidation efficiency and sulfur resistance of CuCl_(2)-modified MnO_(x)-CeO_(x) nanorod catalysts

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2024年第8期25卷 680-686页

作者： Shujie GAO Yongjin HU Zhichang JIANG Xiaoxiang WANG Dong YE Changxing HU College of Quality&Safety Engineering China Jiliang UniversityHangzhou 310018China key laboratory of biomass Chemical Engineering of Ministry of Education Institute of Industrial Ecology and EnvironmentCollege of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China School of Mechatronics and Energy Engineering Ningbo Tech UniversityNingbo 315100China

In this study,a series of CuCl_(2)-modified MnO_(x)-CeO_(x)nanorods were synthesized for the oxidation of Hg^(0).The addition of CuCl_(2)resulted in an enhancement in the catalyst’s Hg^(0)oxidation ability,and Hg^(0)oxidation efficiency reached>97%from 150 to 250°*** the MnO_(x)-CeO_(x)catalysts,Mn^(4+)played the role of the active species for Hg^(0)oxidization,but in the CuCl_(2)-doped catalysts Cl−also contributed to Hg^(0)oxidation,conferring the superior performance of these *** introduction of SO_(2) led to a decrease in the availability of Mn^(4+),and the Hg^(0)oxidation efficiency of MnO_(x)-CeO_(x)decreased from about 100%to about 78%.By contrast,CuCl_(2)-promoted samples maintained a Hg^(0)oxidation efficiency of about 100%during the SO_(2) deactivation cycle due to the high reactivity of Cl−.

关键词： Hg^(0)oxidation CuCl_(2)modification MnO_(x)-CeO_(x)nanorods Sulfur resistance O_(x)idation activity

一种可抑制脓毒症的促愈合短链抗菌肽（英文）

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Science China Materials 2024年

作者：任泽凯丁鑫王玉梅吴晗刘鑫曹阳丛海林申有青于冰 College of Chemistry and Chemical Engineering College of Materials Science and Engineering Institute of Biomedical Materials and Engineering Qingdao University State key laboratory of Bio-fibers and eco-Textiles Qingdao University School of Materials Science and Engineering Shandong University of Technology key laboratory of biomass Chemical Engineering of Ministry of Education Center for Bionanoengineering and Department of Chemical and Biological Engineering Zhejiang University

慢性伤口遭遇多药耐药菌感染是致命的,严重者会引发脓毒症.抗菌肽的广谱抗菌特性和良好的抗耐药性被广泛用于伤口护理领域.我们以SiO2微球为固定相,提取细菌的细胞膜制备细菌细胞膜色谱（BCMC）.固相法合成抗菌肽文库并经BCMC筛选出抗菌...

慢性伤口遭遇多药耐药菌感染是致命的,严重者会引发脓毒症.抗菌肽的广谱抗菌特性和良好的抗耐药性被广泛用于伤口护理领域.我们以SiO2微球为固定相,提取细菌的细胞膜制备细菌细胞膜色谱（BCMC）.固相法合成抗菌肽文库并经BCMC筛选出抗菌肽LKAHR （简称LS5）. LS5具有生物安全、广谱抗菌以及抗耐药性等特点,制备明胶基抗菌水凝胶（LS5-gel）以更好应用于伤口.在伤口愈合模型中发现LS5-gel具有良好的体内杀菌性能以及促进伤口愈合能力.在脓毒症模型中发现LS5对脓毒症感染具有明显的抑制作用.本工作对下一代抗菌药物的选取及慢性伤口愈合治疗具有重要指导意义.

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Recent advances in photochemistry for positron emission tomography imaging

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Chinese Chemical Letters 2024年第8期35卷 149-162页

作者： Jing-Jing Zhang Lujun Lou Rui Lv Jiahui Chen Yinlong Li Guangwei Wu Lingchao Cai Steven H.Liang Zhen Chen Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest BiomassJiangsu Key Lab of Biomass-Based Green Fuels and ChemicalsInternational Innovation Center for Forest Chemicals and MaterialsCollege of Chemical EngineeringNanjing Forestry UniversityNanjing 210037China Department of Radiology and Imaging Sciences Emory UniversityAtlantaGA 30322United States

As a powerful noninvasive imaging technology,positron emission tomography(PET)has been playing an important role in disease theranostics and drug *** successful application of PET relies on not only the biological properties of PET tracers but also the availability of facile and efficient radiochemical reactions to enable practical production and widespread use of PET *** recently,photochemistry is emerging as a novel,mild and efficient approach to generating PET *** this review,we focus on the recent advances in newly developed photocatalytic radiochemical reactions,innovation on automated photochemical radiosynthesis modules,as well as implementation in late-stage radiolabeling and radio-pharmaceutical synthesis for PET *** believe that this review will inspire the development of more promising radiolabeling protocols for the preparation of clinically useful PET agents.

关键词： Positron emission tomography(PET) Fluorine-18 Carbon-11 Photocatalysis Automation Late-stage functionalization

Editorial:special topic on heterojunction in photocatalysts

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Science China Materials 2024年第2期67卷 379-381页

作者： Jiaguo Yu Xin Li Junwei Fu Kai Dai laboratory of Solar Fuel Faculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430078China Institute of biomass Engineering Key Laboratory of Energy Plants Resource and UtilizationMinistry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhou 510642China Hunan Joint International Research Center for Carbon Dioxide Resource Utilization State Key Laboratory of Powder MetallurgySchool of PhysicsCentral South UniversityChangsha 410083China Anhui Province key laboratory of Pollutant Sensitive Materials and Environmental Remediation College of Physics and Electronic InformationHuaibei Normal UniversityHuaibei 235000China

To suppress the recombination of photogenerated electron and hole in single photocatalysts,an important method is to design heterojunction by combining two *** method has widely used to enhance the photocatalytic performance of the *** the begining,most people use type-Ⅱcharge carrier transfer mechanism to explain the emhanced activity of the composite semiconductors.

关键词： composite heterojunction method

Steam reforming of acetic acid over Ni/biochar of low metal-loading:Involvement of biochar in tailoring reaction intermediates renders superior catalytic performance

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Chinese Journal of Chemical Engineering 2024年第4期68卷 241-252页

作者： Yunyu Guo Yiran Wang Shu Zhang Yi Wang Song Hu Jun Xiang Walid Nabgan Xun Hu School of Material Science and Engineering University of JinanJinan 250022China Joint International Research laboratory of biomass Energy and Materials College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China State key laboratory of Coal Combustion Huazhong University of Science and TechnologyWuhan 430074China Departament d'Enginyeria Química Universitat Rovira i VirgiliTarragona 43007Spain

Biochar is a reactive carrier as it may be partially gasified with steam in steam reforming,which could influence the formation of reaction intermediates and modify catalytic ***,the Ni/biochar as well as two comparative catalysts,Ni/Al_(2)O_(3) and Ni/SiO_(2),with low nickel loading(2%(mass))was conducted to probe involvement of the varied carriers in the steam *** results indicated that the Ni/biochar performed excellent catalytic activity than Ni/SiO_(2) and Ni/Al_(2)O_(3),as the biochar carrier facilitated quick conversion of the -OH from dissociation of steam to gasify the oxygen-rich carbonaceous intermediates like C=O and C-O-C,resulting in low coverage while high exposure of nickel species for maintaining the superior catalytic *** converse,strong adsorption of aliphatic intermediates over Ni/Al_(2)O_(3) and Ni/SiO_(2) induced serious coking with polymeric coke as the main type(21.5%and 32.1%,respectively),which was significantly higher than that over Ni/biochar(3.9%).The coke over Ni/biochar was mainly aromatic or catalytic type with nanotube morphology and high *** high resistivity of Ni/biochar towards coking was due to the balance between formation of coke and gasification of coke and partially biochar with steam,which created developed mesopores in spent Ni/biochar while the coke blocked pores in Ni/Al_(2)O_(3) and Ni/SiO_(2) catalysts.

关键词： Steam reforming Acetic acid Ni/biochar catalyst Property of coke Reaction intermediates