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Construction of a Cu@hollow TS-1 nanoreactor based on a hierarchical full-spectrum solar light utilization strategy for photothermal synergistic artificial photosynthesis

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Carbon Energy 2024年第2期6卷 25-36页

作者： Sixian zhu Qiao Zhao hongxia Guo Li Liu Xiao wang Xiwei Qi Xianguang Meng wenquan Cui hebei Key Laboratory for Environment Photocatalytic and Electrocatalytic Materials College of Chemical EngineeringNorth China University of Science and TechnologyTangshanChina School of Materials Science and Engineering National Institute for Advanced MaterialsTKL of Metal and Molecule-Based Material ChemistryNankai UniversityTianjinChina hebei Iron and Steel Laboratory TangshanChina

The artificial photosynthesis technology has been recognized as a promising solution for CO_(2) *** catalysis has been proposed as a novel strategy to promote the efficiency of artificial photosynthesis by coupling both photochemistry and ***,strategies for maximizing the use of solar spectra with different frequencies in photothermal catalysis are urgently ***,a hierarchical full-spectrum solar light utilization strategy is *** on this strategy,a Cu@hollow titanium silicalite-1 zeolite(TS-1)nanoreactor with spatially separated photo/thermal catalytic sites is designed to realize high-efficiency photothermal catalytic artificial *** space-time yield of alcohol products over the optimal catalyst reached 64.4μmol g−1 h−1,with the selectivity of Ch3Ch2Oh of 69.5%.This rationally designed hierarchical utilization strategy for solar light can be summarized as follows:(1)high-energy ultraviolet light is utilized to drive the initial and difficult CO_(2) activation step on the TS-1 shell;(2)visible light can induce the localized surface plasmon resonance effect on plasmonic Cu to generate hot electrons for h2O dissociation and subsequent reaction steps;and(3)low-energy near-infrared light is converted into heat by the simulated greenhouse effect by cavities to accelerate the carrier *** work provides some scientific and experimental bases for research on novel,highly efficient photothermal catalysts for artificial photosynthesis.

关键词： artificial photosynthesis full spectrum nanoreactors photothermal catalysis

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Temperature/electric field induced photoluminescence-modulation effect in dysprosium-doped barium titanate ferroelectric ceramics

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Journal of Materiomics 2024年第5期10卷 1117-1125页

作者： Lei Xia Xiao Liu Zhan Mao Yanbin Cai Jing zhu Jiyang Xie wanbiao hu Yunnan Key Laboratory of Electromagnetic Materials and Devices National Center for International Research on Photoelectric and Energy MaterialsSchool of Materials and EnergyYunnan UniversityKunming650091China Electron Microscopy Center Yunnan UniversityKunming650091China University of Science and Technology of China Hefei230026China

Lanthanide(Ln^(3+))based ferroelectric phosphors,with an integration of PL emission and ferroelectric effect,are unveiling an exciting realm of possibilities for multifunctional ferroelectric-optic ***,how the ferroelectric host enables the tuning on the PL emissions through modulating the local structure(e.g.,lattice site,symmetry,strains etc.)of the Ln^(3+)activator is not established *** this work,a luminescent-ferroelectric material,***^(3+)doped BaTiO_(3) ceramic(Ba_(1–x)Dy_(x)TiO_(3)(x=0–0.07),abbr:BTO:Dy^(3+)),was explored to address the aforementioned *** BTO:Dy^(3+)ceramics were synthesized by a solid-state reaction *** crystal structure,photoluminescence(PL)and electric properties(dielectric constant,ferroelectric hysteresis and piezoelectric hysteresis loop)were systematically *** BTO:Dy^(3+)ceramics show two predominant emission peaks,corresponding to the blue magnetic dipole transition(477 nm,4F_(7/2)→6h_(15/2))and yellow electric dipole transition(573 nm,4F_(7/2)→6h_(13/2)),the intensity ration of which can be modulated by the ferroelectric polarization that causes the slight lattice *** a polarization-emission modulation combining with the Dy3+doping could accelerate the color change,from yellow to blue,which is characterized to detect the phase transition,with a method and mechanism were proposed,that is,the phase change is reflected by the PL characteristic peak intensity ***,the current results offer a convenient photoluminescence method for detecting the ferroelectric phase transition and a feasible approach to study the interaction between the photoluminescence and polarization in ferroelectric materials,for providing new insights for the development of multifunctional materials.

关键词： Photoluminescence Barium titanate Modulation Ferroelectric ceramics

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Numerical Analysis of the Influence of the Impinging Distance on the Scouring Efficiency of Submerged Jets

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Fluid Dynamics & Materials Processing 2024年第2期20卷 429-445页

作者： hao Chen Xianbin Teng Zhibin Zhang Faxin zhu Jie wang Zhaohao Zhang School of Naval Architecture and Maritime Zhejiang Ocean UniversityZhoushan316022China School of Marine Engineering Guangzhou Maritime UniversityGuangzhou510725China

water jet technology is widely used in submerged buried pipes as a non-traditional trenching process,often invol-ving a complex sediment *** important adjustable and inﬂuential engineering variable in this technol-ogy is represented by the impinging *** this study,the FLOw-3D software was used to simulate the jet scouring of sand beds in a submerged *** particular,four sets of experimental conditions were con-sidered to discern the relationship between the maximum scour depth and mass and the impinging *** shown by the results,a critical impinging distance h0 exists by which the static scour depth can be maximized;the scour mass ratio between dynamic and static conditions decreases as the impinging distance ***,the proﬁle contours are similar when the erosion parameter Ec is in the range 0.35he jet trenching contour under both dynamic and static scour modes are also provided in this study.

关键词： Submerged jet impinging distance numerical simulation scour depth scour proﬁle

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Understanding the role of manganese oxides in retaining harmful metals: Insights into oxidation and adsorption mechanisms at microstructure level

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Eco-Environment & health 2024年第1期3卷 89-106页

作者： Feng Li hui Yin Tianqiang zhu wen zhuang School of Environmental Science and Engineering Shandong UniversityQingdaoShandong 266237China Institute of Marine Science and Technology Shandong UniversityQingdao 266237China Key Laboratory of Arable Land Conservation(Middle and Lower Reaches of Yangtse River) Ministry of Agriculture and Rural AffairsCollege of Resources and EnvironmentHuazhong Agricultural UniversityWuhan 430070China State Environmental Protection Key Laboratory of Soil health and Green Remediation Ministry of Ecology and EnvironmentHuazhong Agricultural UniversityWuhan 430070China National Laboratory for Marine Science and Technology Qingdao 266237China Institute of Eco-environmental Forensics Shandong UniversityQingdao 266237China

The increasing intensity of human activities has led to a critical environmental challenge:widespread metal ***(Mn)oxides have emerged as potentially natural scavengers that perform crucial functions in the biogeochemical cycling of metal *** reviews have focused on the synthesis,characterization,and adsorption kinetics of Mn oxides,along with the transformation pathways of specific layered Mn *** review conducts a meticulous investigation of the molecular-level adsorption and oxidation mechanisms of Mn oxides on hazardous metals,including adsorption patterns,coordination,adsorption sites,and redox *** also provide a comprehensive discussion of both internal factors(surface area,crystallinity,octahedral vacancy content in Mn oxides,and reactant concentration)and external factors(ph,presence of doped or preadsorbed metal ions)affecting the adsorption/oxidation of metals by Mn ***,we identify existing gaps in understanding these mechanisms and suggest avenues for future *** goal is to enhance knowledge of Mn oxides'regulatory roles in metal element translocation and transformation at the microstructure level,offering a framework for developing effective metal adsorbents and pollution control strategies.

关键词： Manganese oxides harmful metals Adsorption Redox Environment

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GhATL68b regulates cotton fiber cell development by ubiquitinating the enzyme required forβ-oxidation of polyunsaturated fatty acids

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Plant Communications 2024年第10期5卷 139-153页

作者： Xin Li Gai huang Yifan Zhou Kun wang Yuxian zhu College of Life Sciences Wuhan UniversityWuhan 430072China Institute for Advanced Studies Wuhan UniversityWuhan 430072China hubei hongshan Laboratory Wuhan 430072China TaiKang Center for Life and Medical Sciences Wuhan UniversityWuhan 430072China State Key Laboratory of Plant Genomics and National Center for Plant Gene Research Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China

E3 ligases are key enzymes required for protein ***,we identified a C3h2C3 RING domaincontaining E3 ubiquitin ligase gene named *** is preferentially and highly expressed in developing cotton fiber cells and shows greater conservation in plants than in animals or *** four orthologous copies of this gene in various diploid cottons and eight in the allotetraploid *** were found to have originated from a single common ancestor that can be traced back to Chlamydomonas reinhardtii at about 992 million years *** variations in the GhATL68b promoter regions of ***,***,***,and *** are correlated with significantly different methylation pat*** CRISPR-Cas9 knockout cotton lines exhibit significant reductions in fiber quality traits,including upper-half mean length,elongation at break,uniformity,and mature fiber *** vitro ubiquitination and cell-free protein degradation assays revealed that GhATL68b modulates the homeostasis of 2,4-dienoyl-CoA reductase,a rate-limiting enzyme for theβ-oxidation of polyunsaturated fatty acids(PUFAs),via the ubiquitin proteasome *** cells harvested from these knockout mutants contain significantly lower levels of PUFAs important for production of glycerophospholipids and regulation of plasma membrane *** fiber growth defects of the mutant can be fully rescued by the addition of linolenic acid(C18:3),the most abundant type of PUFA,to the ovule culture *** experimentally characterized C3h2C3 type E3 ubiquitin ligase involved in regulating fiber cell elongation may provide us with a new genetic target for improved cotton lint production.

关键词： Gossypium hirsutum E3 ligases polyunsaturated fatty acids β-oxidation fiber development

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Asynchronous gain-scheduled control of deepwater drilling riser system with hybrid event-triggered sampling and unreliable communication

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Frontiers of Information Technology & Electronic Engineering 2024年第2期25卷 272-285页

作者： Na PANG Dawei ZhANG Shuqian zhu School of Mathematics Shandong UniversityJinan250100China

This paper investigates the recoil control of the deepwater drilling riser system with nonlinear tension force and energy-bounded friction force under the circumstances of limited network resources and unreliable *** from the existing linearization modeling method,a triangle-based polytope modeling method is applied to the nonlinear riser *** on the polytope model,to improve resource utilization and accommodate random data loss and communication delay,an asynchronous gain-scheduled control strategy under a hybrid event-triggered scheme is *** asynchronous linear parameter-varying system that blends input delay and impulsive update equation is presented to model the nonlinear networked recoil control system,where the asynchronous deviation bounds of scheduling parameters are *** to the Lyapunov-Krasovskii functional method,some solvable conditions of disturbance attenuation analysis and recoil control design are derived such that the resulting networked system is exponentially mean-square stable with prescribed h∞*** obtained numerical results verified that the proposed nonlinear networked control method can achieve a better recoil response of the riser system with less transmission data compared with the linear control method.

关键词： Riser system Recoil control Asynchronous gain-scheduled control Data loss Event-triggered scheme

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Parallelogram 3d-4f-5d heterometallic clusters based on trilacunary tungstoantimonates with excellent proton conductivity

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Chinese Chemical Letters 2024年第3期35卷 528-531页

作者： haiying wang han Xu Chaolong Chen Yingjie zhu Yikang Zhang Dongdi Zhang Jingyang Niu henan Key Laboratory of Polyoxometalate Chemistry College of Chemistry and Molecular SciencesHenan UniversityKaifeng 475004China School of Pharmaceutical Science&Yunnan Key Laboratory of Pharmacology for Natural Products Kunming Medical UniversityKunming 650500China Collaborative Innovation Center of Chemistry for Energy Materials State Key Laboratory of Physical Chemistry of Solid Surface and Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China

Two 3d-4f-5d heterometallic cluster-containing polyoxometalates,formulated as Na_(22){(Sbw_(9)O_(33))_(4)[La_(3)w_(6)MO_(18)(h_(2)O)_(8)(Ch_(3)COO)_(4)]_(2)}·nh_(2)O(abbreviated as La_(6)M_(2),M=Co/Mn)were synthesized and structurally ***-crystal X-ray diffraction analyses reveal that the polyanions of La_(6)Co_(2)and La_(6)Mn_(2)consist of the uncommon 3d-4f-5d clusters{La_(6)w_(12)Co_(2)}and{La_(6)w_(12)Mn_(2)},which are encapsulated by four trilacunary Keggin tungstoantimonates to form the parallelogram-shaped title ***,the polyanions can be extended into a two-dimensional(2D)frame by the linkage of peripheral Na+*** inner space of the 2D layer was filled with water molecules and thus an h-bonded network was formed,which is expected to exhibit a fascinating proton *** study of water-assisted proton conduction demonstrated that La_(6)Co_(2)and La_(6)Mn_(2)were temperature-and humiditydependent proton conductors,respectively,and the proton conductivities could reach 1.3×10^(-2)and 2.3×10^(-2)S/cm at 65℃and 90%Rh conditions.

关键词： Polyoxometalate Parallelogram heterometallic 3d-4f-5d cluster Proton conductivity

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highly selectiveα-C(sp^(3))-h arylation of alkenyl amides via nickel chain-walking catalysis

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Chinese Chemical Letters 2024年第7期35卷 271-275页

作者： haoran Shi Jiaxin wang Yuqin zhu hongyang Li Guodong Ju Lanlan Zhang Chao wang Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of ChemistryTianjin Normal UniversityTianjin 300387China

herein,we report the migratory hydroarylation of unactivated alkenes with aryl iodides using native and weakly coordinating amide directors under mild *** coordination of the monodentate directing group and the ligand enable the highly regioselective migratory hydroarylation via a chain walking process to form the thermodynamically stable five-membered nickelacyle *** protocol provides a variety of valuableα-aryl-substituted alkylamine products,and exhibited good functional group *** modification of bioactive compounds such as fenofibrate and indomethacin further highlights the synthetic value of this protocol.

关键词： Alkenes hydroarylation Chain-walking Regioselective Nickel catalysis

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Pyridapeptides F–I,cyclohexapeptides from marine sponge-derived Streptomyces ***-4539

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Chinese Chemical Letters 2024年第7期35卷 341-344页

作者： Shuige Zhao Pengcheng Yan Peipei Liu haishan Liu Ning Li Peng Fu weiming zhu Key Laboratory of Marine Drugs Ministry of Education of ChinaSchool of Medicine and PharmacyOcean University of ChinaQingdao 266003China Key Laboratory for Marine Drugs and Bioproducts Laoshan LaboratoryQingdao 266237China School of Biological Science and Technology University of JinanJi'nan 250022China Key Laboratory for Biosensors of Shandong Province Biology InstituteQilu University of TechnologyJi'nan 250103China

Four new cyclohexapeptides,pyridapeptides F–I(1–4),were isolated from the fermentation broth of marine sponge-derived Streptomyces *** pyridapeptides F–h(1–3)are composed ofβ-hydroxyleucine,alanine,O-methylthreonine,hexahydropyridazine-3-carboxylic acid,5-hydroxytetrahydropyridazine-3-carboxylic acid,and(2S,3R,4E,6E)-2-amino-3–hydroxy-4,6-dienoic acid *** I(4)contains(2S,3R,4E,6E)-2-amino-3–hydroxy-8-methylnona-4,6-dienoic acid residue and a very rare glycose residue,*** structures were determined based on spectroscopic analysis and chemical *** G–I(2–4)have the 2,3,6-trideoxyhexose units glycosylated at theγ-Oh-TPDA residue,displayed significant antiproliferative activity against four(PC9,MKN45,hep G2,K562)or two(PC9,MKN45)human cancer cell lines.

关键词： Marine microorganism Streptomyces Cyclopeptide glycosides Pyridapeptides Antiproliferative activity

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Silica-modified Pt/TiO_(2) catalysts with tunable suppression of strong metal-support interaction for cinnamaldehyde hydrogenation

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Chinese Journal of Chemical Engineering 2024年第6期70卷 189-198页

作者： Zhengjian hou Yuanyuan zhu hua Chi Li Zhao huijie wei Yanyan Xi Lishuang Ma Xiang Feng Xufeng Lin College of Chemistry and Chemical Engineering China University of Petroleum(East China)Qingdao 266580China Advanced Chemical Engineering and Energy Materials Research Center China University of Petroleum(East China)Qingdao 266580China State Key Laboratory of heavy Oil Processing China University of Petroleum(East China)Qingdao 266580China

Tuning Strong Metal-support Interactions(SMSI)is a key strategy to obtain highly active catalysts,but conventional methods usually enable TiO_(x) encapsulation of noble metal components to minimize the exposure of noble *** study demonstrates a catalyst preparation method to modulate a weak encapsulation of Pt metal nanoparticles(NPs)with the supported TiO_(2),achieving the moderate suppression of SMSI *** introduction of silica inhibits this encapsulation,as reflected in the characterization results such as XPS and hRTEM,while the Ti^(4+) to Ti^(3+) conversion due to SMSI can still be found on the support ***,the hydrogenation of cinnamaldehyde(CAL)as a probe reaction revealed that once this encapsulation behavior was suppressed,the adsorption capacity of the catalyst for small molecules like h_(2) and CO was enhanced,which thereby improved the catalytic activity and facilitated the hydrogenation of ***,the introduction of SiO_(2) also changed the surface structure of the catalyst,which inhibited the occurrence of the acetal reaction and improved the conversion efficiency of C=O and C=C *** manipulation of SMSI formation and its consequence on the performance in catalytic hydrogenation reactions are discussed.

关键词： Pt catalyst Silica modification hydrogenation Cinnamaldehyde Strong metal-support interaction

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