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Analysis of periodic pulsating nanofluid flow and heat transfer through a parallel-plate channel in the presence of magnetic field

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Applied Mathematics and Mechanics(English Edition) 2023年第11期44卷 1957-1972页

作者： Qingkai ZHAO Longbin TAO Hang XU School of Naval Architecture and Ocean Engineering Jiangsu University of Science and TechnologyZhenjiang 212100Jiangsu ProvinceChina Department of Naval Architecture Ocean and Marine EngineeringUniversity of StrathclydeGlasgow G4 OLZU.K. State Key Lab of Ocean Engineering School of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China

In this paper,we focus on the two-dimensional pulsating nanofluid flow through a parallel-plate channel in the presence of a magnetic *** pulsating flow is produced by an applied pressure gradient that fluctuates with a small amplitude.A kind of proper transformation is used so that the governing equations describing the momentum and thermal energy are reduced to a set of non-dimensional *** analytical expressions of the pulsating velocity,temperature,and Nusselt number of nanofluids are obtained by the perturbation *** the present study,the effects of the Cu-H2O and Al_(2)O_(3)-H2O nanofluids on the flow and heat transfer in pulsating flow are compared and *** results show that the convective heat transfer effect of Cu-H2O nanofluids is better than that of Al_(2)O_(3)-H2O ***,the effects of the Hartmann number and pulsation amplitude on the velocity,temperature,and Nusselt number are examined and discussed in *** present work indicates that increasing the Hartmann number and pulsation amplitude can enhance the heat transfer of the pulsating *** addition,selecting an optimal pulsation frequency can maximize the convective heat transfer of the pulsating ***,improved understanding of these fundamental mechanisms is conducive to the optimal design of thermal systems.

关键词： nanofluid pulsating flow heat transfer applied magnetic field

Achieving high-efficient photocatalytic persulfate-activated degradation of tetracycline via carbon dots modified MIL-101(Fe)octahedrons

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Chinese Journal of Chemical Engineering 2024年第2期66卷 298-309页

作者： Hao Yuan Xinhai Sun Shuai Zhang Weilong Shi Feng Guo School of Material Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China

The synergistic reaction of photocatalysis and advanced oxidation is a valid strategy for the degradation of harmful antibiotic ***,carbon dots(CDs)modified MIL-101(Fe)octahedrons to form CDs/MIL-101(Fe)composite photocatalyst was synthesized for visible light-driven photocatalytic/persulfate(PS)-activated tetracycline(TC)*** electron spin resonance(ESR)spectra,scavenging experiment and electrochemical analysis were carried out to reveal that the high visible light-driven photocatalytic degradation activity of TC over CDs/MIL-101(Fe)photocatalysts is not only ascribed to the production of free active radicals in the CDs/MIL-101(Fe)/PS system(·OH,·SO_(4-),^(1)O_(2),h^(+)and·O_(2)^(-))but also attributed to the consumption of electrons caused by the PS,which can suppress the recombination of photo-generated carriers as well as strong light scattering and electron trapping effects of ***,the possible degradation pathways were proposed by analyzing intermediates via liquid chromatography-mass spectrometry *** research presents a rational design conception to construct a CDs/PS-based photocatalysis/advanced oxidation technology with high-efficient degradation activity for the remediation of organic antibiotic pollutant wastewater and for the improvement of carrier transport kinetics of photocatalysts.

关键词： Carbon dots MIL-101(Fe) Photocatalytic Persulfate activation Tetracycline degradation

CdS nanoparticles decorated hexagonal Fe_(2)O_(3) nanosheets with a Z-scheme photogenerated electron transfer path for improved visible-light photocatalytic hydrogen production

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Chinese Journal of Chemical Engineering 2022年第3期35卷 266-274页

作者： Feng Guo Haoran Sun Yuxing Shi Fengyu Zhou Weilong Shi School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China School of Material Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Photocatalytic water splitting for hydrogen production(H_(2))is one of the main potential applications of photocatalytic technology,which can use solar energy as the energy required for chemical reactions to alleviate the energy *** this work,zero-dimensional/two-dimensional(0D/2D)contact surface CdS/α-Fe_(2)O_(3)(CF)heterojunction photocatalyst was synthesized via a simple solvothermal *** hydrogen production experiments revealed that the CF-15 sample shows the optimal photocatalytic H_(2)rate(1806μmol·h^(-1)·g^(-1))and apparent quantum efficiency(AQE=13.7%atλ=420 nm).The enhancement of photocatalytic performance is mainly attributed to the contact of 0D/2D interface and the synergistic effect of Z-scheme electron transfer *** work provides an effective way for modified composite semiconductor photocatalyst by constructing special interface heterojunction to achieve highly efficiently catalysis.

关键词： Photocatalysis Hydrogen production 0D/2D CdS α-Fe_(2)O_(3) Z-scheme

Nanodiamonds decorated yolk-shell ZnFe_(2)O_(4) sphere as magnetically separable and recyclable composite for boosting antibiotic degradation performance

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Chinese Journal of Chemical Engineering 2023年第2期54卷 162-172页

作者： Jingjing Pan Haoran Sun Keyi Chen Yuhao Zhang Pengnian Shan Weilong Shi Feng Guo School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China School of Material Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China College of Chemistry Zhengzhou UniversityZhengzhou 450001China

Photocatalysis is an environmentally friendly and energy-saving technology, which can effectively remove persistent dangerous pollutants in the water. Pitifully, optical absorption capacity and carrier separation have become major bottlenecks for marvelous photocatalytic performance of ***, to address these issue, Nanodiamonds/yolk-shell ZnFe_(2)O_(4) spheres(NDs/ZFO) nanocomposites were successfully constructed via a facile two-step of solvothermal and calcination methods. The synthesized optimal NDs/ZFO-10 nanocomposite exhibits superior photocatalytic degradation activity of antibiotic under visible light, approximately 85% of the total tetracycline(TC) is degraded, and this photocatalyst shows durable cycling stability. This stems from two aspects of refinement: improvement of light absorption capacity and photo-induced charges migration and separation. In addition, the NDs/ZFO composite photocatalyst features excellent magnetic recovery capability, facilitating the recovery of photocatalyst in industry. This study opens a new chapter in the combination of NDs with magnetic materials, and deepens the understanding of the application of NDs modified composite photocatalysts.

关键词： Nanodiamonds ZnFe_(2)O_(4) Photocatalytic Heterojunction Antibiotic degradation

ftr82 is necessary for hair cell morphogenesis and auditory function during zebrafish development

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Journal of Genetics and Genomics 2023年第2期50卷 77-86页

作者： Guoli Yin Fuping Qian Jia Yao Ziyang Wang Xin Wang Dong Liu Cheng Wang Nantong Laboratory of Development and Diseases School of Life SciencesCo-innovation Center of NeuroregenerationMOE Key Laboratory of NeuroregenerationNantong UniversityNantongJiangsu 226019China

Damages of sensory hair cells(HCs)are mainly responsible for sensorineural hearing loss,while the pathological mechanism remains not fully understood due to the many potential deafness genes ***82,a member of the largely TRIMs family in fish,has been found specifically expressed in the otic vesicle while its function is still ***,we investigate the roles of ftr82 in HC development and hearing function utilizing the zebrafish *** results of in situ hybridization illustrate that ftr82 is always restricted to localize in otic vesicles at different *** defects of HCs are observed both in ftr82 morphants and mutants,including significantly decreased crista HCs,shortened cilia as well as remarkably reduced functional HCs in neuromasts,which could be successfully rescued by co-injection of exogenous ftr82 *** behavior assay of startle response indicates that larvae lacking of ftr82 exhibits lower sensitivity to external sound *** research reveals that the loss of HCs is mainly caused by cell apoptosis mediated by caspase-3 *** study demonstrates that ftr82 is a crucial hearing-related gene that regulates the HC morphogenesis and auditory function performing,which provides new insight into the rapid identification of the deafness gene.

关键词： ftr82 TRIM protein Hair cell development Hearing loss Zebrafish

Ternary Ni_(2)P/Bi_(2)MoO_(6)/g-C_(3)N_(4)composite with Z-scheme electron transfer path for enhanced removal broad-spectrum antibiotics by the synergistic effect of adsorption and photocatalysis

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Chinese Journal of Chemical Engineering 2022年第4期35卷 157-168页

作者： Feng Guo Zhihao Chen Xiliu Huang Longwen Cao Xiaofang Cheng Weilong Shi Lizhuang Chen School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Material Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China College of Chemistry Zhengzhou UniversityZhengzhou 450001China

Constructing the stable,low-cost,efficient,and highly adaptable visible light-driven photocatalyst to implement the synergistic effect of photocatalysis and adsorption has been excavated a promising strategy to deal with antibiotic pollution in water ***,a novel 3 D ternary Z-scheme heterojunction photocatalyst Ni_(2)P/Bi_(2)MoO_(6)/g-C_(3)N_(4)(Ni_(2)P/BMO/CN)was fabricated by a simple solvothermal method in which the broad spectrum antibiotics(mainly tetracyclines and supplemented by quinolones)were used as target pollution sources to evaluate its adsorption and photocatalytic ***,the Zscheme composite significantly exhibit the enhancement for degradation efficiency of tetracycline and other antibiotic by using Ni_(2)P nanoparticles as electron *** species capture experiment and electron spin resonance(ESR)technology reveal the mechanism of Z-scheme Ni_(2)P/BMO/CN photocatalytic reaction in *** addition,based on the identification of intermediates by liquid chromatography–mass spectroscopy(LC–MS),the possible photocatalytic degradation pathways of TC were proposed.

关键词： Ni_(2)P/Bi_(2)MoO_(6)/g-C_(3)N_(4) Z-scheme Photocatalysis Adsorption

Novel pneumatically assisted atomization device for living cell delivery:application of sprayed mesenchymal stem cells for skin regeneration

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Bio-Design and Manufacturing 2022年第1期5卷 220-232页

作者： Lixing Zhang Xintao Yan Li An Meijia Wang Xi Xu Zhonglin Ma Mengting Nie Fangzhou Du Jingzhong Zhang Shuang Yu Suzhou Institute of Biomedical Engineering and Technology Chinese Academy of SciencesSuzhou 215163China Zhengzhou Institute of Engineering and Technology Affiliated with SIBET Zhengzhou 450001China Xuzhou Medical University Xuzhou 221004China Academy for Engineering and Technology Fudan UniversityShanghai 200433China

Large cutaneous wounds pose a severe medical problem and may be deadly in cases when regeneration is ***,topical stem cell therapy has been realized as a promising strategy for wound healing and skin ***,stem cells must be administrated uniformly to the wound area,otherwise treatment will be ineffective,which has been a limitation of current administration ***,the delivery pressure and nozzle features of most clinical cell spray devices are unknown,which may significantly affect the viability of sprayed cells and their capacity for ***,we developed a novel pneumatically assisted atomization device(PAAD)in which cell suspensions were uniformly atomized at a low delivery *** optimized the applied fluidic pressure and air pressure to maximize cell survival and function for the application of multiple cell types,while ensuring uniform dispersal across the wound ***,we found that the application of sprayed umbilical cord-derived mesenchymal stem cells to wound sites significantly accelerated wound healing and promoted appendage regeneration on an excisional cutaneous wound ***,the novel PAAD system delivered living cells uniformly and maintained the viability and differentiation of sprayed cells,strongly suggesting its potential for application in clinical cell therapy,especially for large,irregular,and severe skin wounds.

关键词： Cell delivery Skin wound Wound healing Spray application Cell-spray autografting Stem cell therapy

Designing unimolecular photoinitiator by installing NHPI esters along the TX backbone for acrylate photopolymerization and their applications in coatings and 3D printing

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Chinese Chemical Letters 2024年第7期35卷 417-421页

作者： Yi Zhu Jingyan Zhang Yuchao Zhang Ying Chen Guanghui An Ren Liu Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi 214122China International Research Center for Photoresponsive Molecules and Materials Jiangnan UniversityWuxi 214122China School of Chemistry and Materials Science Heilongjiang UniversityHarbin 150080China Scientific Experiment Center Hangzhou Institute of Medicine(HIM)Chinese Academy of SciencesHangzhou 310022China

Developing efficient and long wavelength sensitive unimolecular photoinitiators(PIs)is still facing a great *** this work,a series of thioxanthone-based N-hydroxyphthalimide esters(TX-NHPIEs)were synthesized by installing NHPIEs along the TX backbone and *** investigated TX-NHPIEs have a 60 nm redshift and demonstrate sterling initiating efficiency for free radical photopolymerization(FRP)under LED@450 nm light irradiation compared with the commercialized isopropylthioxanthone(ITX).Real-time1Hnuclear magnetic resonance(1H NMR),electron spin resonance(ESR),decarboxylation and gas chromatograph-mass spectrometer(GC–MS)experiments and density functional theory(DFT)reveal that TX-NHPIEs can generate one alkyl radical and one N-centered iminyl radical,which can initiate FRP directly and indirectly,*** other words,TX-NHPIEs absorb one photon and can generate two active radicals,which break through the limitations of common ***-NHPIE-Cpe demonstrates the highest initiating efficiency,and its application in coatings and 3D printing was also studied,indicating TX-NHPIEs have broad potential applications in photopolymerization processes.

关键词： Photopolymerization Photoinitiator Energy transfer Thioxanthone N-Hydroxyphthalimide ester

Highly efficient visible/near-infrared light photocatalytic degradation of antibiotic wastewater over 3D yolk-shell ZnFe_(2)O_(4)supported 0D carbon dots with up-conversion property

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Chinese Journal of Chemical Engineering 2022年第9期35卷 213-223页

作者： Weilong Shi Jie Gao Haoran Sun Zhongyi Liu Feng Guo Lijing Wang College of Chemistry Zhengzhou UniversityZhengzhou 450001China School of Life Sciences Northwestern Polytechnical UniversityXi’an 710072China School of Material Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China Henan Engineering Center of New Energy Battery Materials Henan D&A Engineering Center of Advanced Battery MaterialsCollege of Chemistry and Chemical EngineeringInstitute of Architectural EngineeringShangqiu Normal UniversityShangqiu 476000China

The development of effective visible and near-infrared photocatalysts is highly promising in the current field of ***,carbon dots/ZnFe_(2)O_(4)(CDs/ZFO)with coating zero dimensional(0D)CDs on the surface of three dimensional(3D)yolk-shell ZFO spheres was designed and synthesized via a selftemplated solvothermal *** as-prepared CDs/ZFO composites displayed outstanding visible and near-infrared photocatalytic degradation activity of tetracycline(TC),and the optimal 3%CDs/ZFO sample with loading 3%(mass)CDs displayed the highest photocatalytic TC degradation ability under visible light(79.5%within 120 min)and near-infrared light(41%within 120 min).The enhancement of photocatalytic activity for CDs/ZFO composite is mainly ascribed to the fact that 0D/3D yolk-shell CDs/ZFO structure not only effectively reflect the incident light to increase the utilization efficiency of solar light,but also utilize the up-conversion photoluminescence and electronic conductivity properties of CDs to broaden sunlight absorption range and promote separation and transfer of electron-hole pairs.

关键词： Carbon dots ZnFe_(2)O_(4) York-shell Near-infrared Photocatalytic