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Improving antioxidant activities of water-soluble lignin-carbohydrate complex isolated from wheat stalk through prolonging ball-milling pretreatment and homogeneous extraction

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Journal of Bioresources and Bioproducts 2024年第1期9卷 113-125页

作者： di Xie Zhulan Liu Yunfeng Cao Sheng-I Yang Chen Su mi Li Jiangsu Co-innovation Center for Efficient Processing and Utilization of Forest Products Nanjing Forestry UniversityNanjing 210037China International Innovation Center for Forest Chemicals and materials Nanjing Forestry UniversityNanjing 210037China Center for Renewable Carbon School of Natural ResourcesUniversity of TennesseeKnoxvilleTN 37996USA Shandong Huatai Paper Co. Ltd.Dongying 257000China School of Natural Resources University of TennesseeKnoxvilleTN 37996USA Key Lab of Biomass Energy and material Institute of Chemical Industry of Forest ProductsChinese Academy of ForestryJiangsu ProvinceNanjing 210042China

Water-soluble lignin-carbohydrate complex(LCC)rich in polysaccharides exhibits benign in vitro antioxidant activities and distinguishes high biocompatibility from lignin-rich LCC and ***,the antioxidant activity of water-soluble LCCs remains to be improved and its structure-antioxidant relationship is still ***,structurally diversified water-soluble LCCs were isolated under different ball-milling pretreatment durations(4,6,8 h),extraction pathways(ho-mogeneous and heterogeneous),and isolation routines(water extracts and residues after water extraction).Their structures were characterized by wet chemistry,chromatography and *** activities were evaluated by ferric reducing antioxidant power and 1,1-diphenyl-2-picrylhydrazyl radicals scavenging rate(RDPPH).Results show that altering ball-milling duration and isolation procedures cause varied structures and antioxidant activities of the water-soluble ***,prolonging ball-milling duration to 8 hours and homogeneous extrac-tion can enhance their antioxidant activity through releasing more phenolic structures and pro-moting the extraction of high-molecular-weight LCCs via reducing mass-transfer resistance,*** a result,the RDPPH of water-soluble LCCs reaches up to 97.35%,which is associated with the arabinan content with statistical significance(P<0.05).This study provides new insights into the structure-antioxidation relationship of herbaceous LCC as potential antioxidants.

关键词： LCC Homogeneous extraction Ball-milling Structure-antioxidation relationship Wheat straw

One-step preparation of efficient cuprous chloride catalyst for direct synthesis of trimethoxysilane

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Chinese Journal of Chemical Engineering 2024年第7期71卷 161-171页

作者： Jiaxin Zhang Lu Wang Zhiqiang ma Chuanjun di Guanghui Chen Jipeng Dong Jianlong Li Fei Gao Key Laboratory of multiphase Flow Reaction and Separation Engineering of Shandong Province College of Chemical EngineeringQingdao University of Science and TechnologyQingdao 266042China

CuCl-based catalysts are the most commonly used catalysts for the“direct synthesis”of trimethoxysilane(m3).CuCl species are sensitive to air and water,and are prone to oxidation *** CuCl is directly used as a catalyst,it needs to be purified before the utilization,and the operating conditions for the catalyst preparation are relatively harsh,requiring the inert gas *** a high-temperature activation step required for CuCl-based catalysts used for catalyzing synthesis of m3 to form active phase Cu–Si alloys(Cu_(x)Si)with Si powder,in this work,a series of catalysts for the“direct synthesis”of m3 were obtained by a one-step high-temperature activation of the mixture of stable CuCl_(2) precursors,activated carbon-reducing agent,and Si powder,simultaneously achieving the reduction of CuCl_(2) to CuCl and the formation of active phase Cu_(x)Si alloys of CuCl with Si *** prepared samples were characterized through various characterization techniques,and investigated for the catalytic performance for the“direct synthesis”of ***,the operation conditions were optimized,including the activation temperature,catalyst dosage,Si powder particle size,and reaction *** characterization results indicate that during the one-step activation process,the CuCl_(2) precursor is reduced to CuCl,and the resulting CuCl simultaneously reacts with Si powder to form active phases Cu3Si and Cu15Si4 *** optimal catalyst Sacm(250,0.8:10)exhibits a good catalytic activity with selectivity of 95%and yield of 77%for m3,and shows a good universality for various alcohol ***,the catalytic mechanism of the prepared catalyst for the“direct synthesis”of m3 was discussed.

关键词： Trimethoxysilane Cuprous chloride Catalysis Catalyst activation Reduction Active phase formation

Integration of metal-organic layers with quantum dots for artificial photosynthesis

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Science China Chemistry 2024年第11期67卷 3712-3718页

作者： Hong Yuan min Zhang Ji-Hua Deng Tong-Bu Lu di-Chang Zhong Institute for New Energy materials and Low Carbon Technologies School of Materials Science and Engineering School of Chemistry and Chemical Engineering Tianjin University of Technology

metal-organic layers（mOLs）, a type of new-emerging two-dimensional ultrathin metal-organic framework materials with large surface areas and highly exposed active sites, have shown promising applications in photocatalytic CO2reduction. However, due to a lack of photosensitivity and photooxidation capability, photosensitizers and sacrificial reductants are usually necessary for mOLs-based photocatalytic CO2reduction systems. In this article, by integration of mOLs and quantum dots（QDs）, we constructed mOLs-based catalysts with multi-functions of photosensitivity, photoreduction and photooxidation, which thus can serve as photocatalysts for CO2reduction with H2O as an electron donor. Specifically, by an electrostatic self-assembly approach,nickel（Ⅱ）-based mOLs（Ni-mOLs） and CsPbBr3QDs have been assembled, constructing valid Ⅱ-Scheme Ni-mOLs/CsPbBr3heterojunctions with close Ni-mOLs/CsPbBr3heterointerface. Such a close heterointerface shortens the charge transfer distance,thus effectively boosting the charge separation and transfer. As a result, upon illumination by visible light(λ ≥ 400 nm,100 m W cm-2), the optimized photocatalyst shows high efficiency and stability in photochemical CO2reduction in the absence of any photosensitizers and sacrificial reductants. The CO yield reaches as high as 124 μmol g-1in 4 h, over 6 times higher than that achieved by CsPbBr3. Additionally, the selectivity reaches 100%. This work provides a new way to construct mOL-based catalysts for artificial photosynthesis.

关键词： metal-organic layers artificial photosynthesis CO2 reduction H2O oxidation

Anti-corrosive and highly reversible zinc metal anode enabled by the phenolic resin coating

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Rare metals 2024年第5期43卷 2115-2124页

作者： Ya-Ping Wang Ya-di Yang Shu-Qi Duan Li Wang Jia-Shuo Guo An-Qiang Pan School of materials Science and Engineering Hebei University of TechnologyTianjin 300130China Key Laboratory of Special Functional materials for Ecological Environment and Information(Hebei University of Technology).ministry of Education Tianjin 300130China Key Laboratory for New Type of Functional materials in Hebei Province Hebei University of TechnologyTianjin 300130China School of materials Science and Engineering Central South UniversityChangsha 410083China

Aqueous zinc-ion batteries have attracted much attention due to their high theoretical capacity,low cost high safety,and ***,challenges such as dendrite growth and side reactions severely hinder the electrochemical performance of the Zn anode,leading to low Coulombic efficiency(CE)or even short circuits Herein,phenolic resin(PF)is used as a protective coating on the surface of the zinc metal *** PF layer can greatly improve the corrosion resistance of the Zn electrode in the ***,this artificial electrode/electrolyte interphase also elevates the nucleation barrier and restrains Zn^(2+)2D diffusion,regulating the zinc deposition/dissolution *** a result,PF@Zn symmetric cells exhibit superior performance than that of bare Zn symmetric cells,achieving a stable and dendrite-free cycle of 1400 ***,the carbon nanotube mnO_(2)||PF@Zn(CNT/mnO_(2)||PF@Zn)full cell also delivers a long cycle life with a high-capacity retention of about 180.0 m Ah·g^(-1)after 1400 cycles,far exceeding that of bare Zn *** work provides a facile strategy for achieving a dendrite-free and rechargeable zinc anode.

关键词： Rechargeable aqueous batteries Zn metal anode Phenolic resin Anti-corrosion

Texture and Se vacancy optimization induces high thermoelectric performance in Bi_(2)Se_(3) flexible thin films

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Rare metals 2024年第6期43卷 2796-2804页

作者： Dong-Wei Ao Wei-di Liu Yue-Xing Chen Fan ma Yi-Jie Gu Zhuang-Hao Zheng School of machinery and Automation Weifang UniversityWeifang 261061China Australian Institute for Bioengineering and Nanotechnology The University of QueenslandBrisbane 4072Australia Shenzhen Key Laboratory of Advanced Thin Films and Applications Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen518060China School of materials Science and Engineering Inner Mongolia University of TechnologyHohhot 010051China

Bi_(2)Se_(3)-based flexible thin film with high thermoelectric performance is promising for the waste heat recovery *** this work,a novel post-selenization method is employed to prepare n-type Bi_(2)Se_(3)flexible thin films with highly textured *** strengthened texture and Se vacancy optimization can be simultaneously achieved by optimizing the selenization *** highly oriented texture leads to the increased carrier mobility and results in a high electric conductivity of~290.47 S·cm^(-1)at 623 ***,a high Seebeck coefficient(>110μW·K-1)is obtained due to the reduced carrier concentration,induced by optimizing vacancy ***,a high power factor of 3.49μW·cm^(-1)·K^(-2)at 623 K has been achieved in asprepared highly-bendable Bi_(2)Se_(3)flexible thin films selenized at 783 *** study introduces an effective post-selenization method to tune the texture structure and vacancies of Bi_(2)Se_(3)flexible thin films,and correspondingly achieves high thermoelectric performance.

关键词： Thermoelectric Bi_(2)Se_(3) Flexible thin film Post-selenization

Tumor targeted and GSH stimuli response a-lactalbumin nanotubes co-delivering doxorubicin and siRNA for cancer therapy

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Journal of Future Foods 2024年第4期4卷 300-308页

作者： Guohua Hou di Wu Xing Li Bin Liu Research Center of Food Colloids and Delivery of Functionaliny Collge of Food Science and Mutritional EngineeringChina Agriculnrral UniversinBeijimg 10083China Department of Numition cand Heaith China Agricultural UniversityBeijing 100193China Deparoment of Health Sciences and Technology.Eidgenossische Technische Hochschule Zinich Zurich 8092Switzerland

α-Lactalbumin(a-lac),a natural food-sourced protein,exhibits high biocompatibility as delivery systems for small bioactive molecules or ***,their potential clinical application as a delivery system is greatly limited due to the 1ack of targeting to desired tissues,such as ***,a delivery system/nanocarier of nantube(NT)was fabricated by the self-assembly of peptides hydrolyzed from *** the 1oading of anti-tumor agents of doxorubicin(Dox)and siRNA,NTs were conjugated with the tLyp-1 peptide to specifially target the neuropilin 1 receptor,which exists on the membrane of mDA-mB-231 cancer *** micromonphology of NTs was not affected during the processes of 1oading and targeting ***,no significant changes in the size and zeta potential of the tI yp-1/NTs/Dox/siRNA nanocarrier were observed when stored in phosphate buffered saline for 7 days,indicating outstanding ***,both the cellular uptake efficiency and tumor accumulation effects of NTs on mDA-mB-231 breast cancer cells were significantly improved after modification with *** relative viability of mDA-mB-231 cells was decreased by 70.1%in viro after treatmnent with tLyp-1/NTs/Dox/siRNA(5μg/mL Dox).Finally,a synergistic anticancer effect of Dox and siRNA co-loaded in tLyp-1/NTs was achieved in the anticancer treatment of mDA-mB-231 tumor-bearing *** findings indicate that food-sourced protein a-lac nanocarriers could be used for the co-delivery of bioactive molecules and RNA,achieving synergistic and effcient therapeutic effects.

关键词： α-Lactabumin nanotube Nanocarier Tumor-targeted siRNA Synergistic effect

Explainable Artificial Intelligence(XAI)model for Cancer Image Classification

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Computer modeling in Engineering & Sciences 2024年第10期141卷 401-441页

作者： Amit Singhal Krishna Kant Agrawal Angeles Quezada adrian Rodriguez Aguiñaga Samantha Jiménez Satya Prakash Yadav Department of Computer Science&Engineering Raj Kumar Goel Institute of TechnologyGhaziabad201017India Department of School of Computing Science and Engineering Galgotias UniversityGreater Noida203201India Tecnológico Nacional de méxico Campus Tijuana Baja California22414México Universidad Autónoma de Baja California TijuanaBaja California22414México Department of Computer Science and Engineering G.LBajaj Institute of Technology and Management(GLBITM)Affiliated to Dr.A.P.J.Abdul Kalam Technical UniversityLucknow201306India School of Computer Science Engineering and Technology(SCSET) Bennett UniversityGreater Noida201310India

The use of Explainable Artificial Intelligence(XAI)models becomes increasingly important for making decisions in smart healthcare *** is to make sure that decisions are based on trustworthy algorithms and that healthcare workers understand the decisions made by these *** models can potentially enhance interpretability and explainability in decision-making processes that rely on artificial ***,the intricate nature of the healthcare field necessitates the utilization of sophisticated models to classify cancer *** research presents an advanced investigation of XAI models to classify cancer *** describes the different levels of explainability and interpretability associated with XAI models and the challenges faced in deploying them in healthcare *** addition,this study proposes a novel framework for cancer image classification that incorporates XAI models with deep learning and advanced medical imaging *** proposed model integrates several techniques,including end-to-end explainable evaluation,rule-based explanation,and useradaptive *** proposed XAI reaches 97.72%accuracy,90.72%precision,93.72%recall,96.72%F1-score,9.55%FDR,9.66%FOR,and 91.18%*** will discuss the potential applications of the proposed XAI models in the smart healthcare *** will help ensure trust and accountability in AI-based decisions,which is essential for achieving a safe and reliable smart healthcare environment.

关键词： Explainable artificial intelligence artificial intelligence XAI healthcare cancer image classification

Amine-functionalized metal organic framework@graphene oxide as filler in PAEK-containing carboxyl group membrane for ultrafiltration with ultra-high permeability and strong fouling resistance

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Chinese Journal of Chemical Engineering 2024年第6期70卷 93-103页

作者： Zhaoli Wang Wenjing Li Yi Zhang Yanyin Cheng Junjian Yu Tianming Dong Xiaoyu Chi di Liu Zhe Wang School of Chemistry and Life Science Changchun University of TechnologyChangchun 130012China Advanced Institute of materials Science Changchun University of TechnologyChangchun 130012China Key Laboratory of Advanced Functional Polymer membrane materials of Jilin Province Changchun 130012China

Achieving high fouling resistance and permeability using membrane separation technology in water treatment processes remains a *** this work,a novel mixed-matrix membrane(mmm)(poly(arylene ether ketone)[PAEK]-containing carboxyl groups[PAEK-COOH]/UiO-66-NH_(2)@graphene oxide[GO])with superb fouling resistance and high permeability was prepared by the nonsolvent-induced phase separation method,by in-situ growth of UiO-66-NH_(2) on the GO layer,and by preparing hydrophilic *** the basis of the structure and performance analysis of the mmm,the maximum water flux reached 591.25 L·m^(-2)·h^(-1) for PAEK-COOH/UiO-66-NH_(2)@GO,whereas the retention rate for bovine serum albumin increased from 85.40%to 94.87%.As the loading gradually increased,the hydrophilicity of the mmms increased,significantly enhancing their fouling *** strongest anti-fouling ability observed was 94.74%,which was 2.02 times greater than that of the pure *** the same time,the mmms contained internal amide and hydrogen bonds during the preparation process,forming a cross-linked structure,which further enhanced the mechanical strength and chemical *** summary,the mmms with high retention rate,strong permeability,and anti-fouling ability were successfully prepared.

关键词： Poly(arylene ether ketone)-containing Carboxyl groups(PAEK-COOH) UiO-66-NH_(2)@graphene oxide Hydrophilic modification Ultra-high selectivity Strong anti-fouling

Amino-functionalized UiO-66-doped mixed matrix membranes with high permeation performance and fouling resistance

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Chinese Journal of Chemical Engineering 2024年第3期67卷 68-77页

作者： Yi Zhang di Liu Zhaoli Wang Junjian Yu Yanyin Cheng Wenjing Li Zhe Wang Hongzhe Ni Yuchao Wang School of Chemical Engineering Changchun University of TechnologyChangchun 130012China Advanced Institute of materials Science Changchun University of TechnologyChangchun 130012China Key Laboratory of Advanced Functional Polymer membrane materials of Jilin Province Changchun 130012China School of Chemistry and Life Science Changchun University of TechnologyChangchun 130012China

For the reduction of bovine serum proteins from wastewater,a novel mixed matrix membrane was prepared by functionalizing the substrate material polyaryletherketone(PAEK),followed by carboxyl groups(C-SPAEKS),and then adding amino-functionalized UiO-66-NH_(2)(Am-UiO-66-NH_(2)).Aminofunctionalization of UiO-66 was accomplished by melamine,followed by an amidation reaction to immobilize Am-UiO-66-NH_(2),which was immobilized on the surface of the membrane as well as in the pore channels,which enhanced the hydrophilicity of the membrane surface while increasing the negative potential of the membrane *** nanoparticle-loaded ultrafiltration membrane has good permeation performance,with a pure water flux of up to 482.3 L·m^(-2)·h^(-1) for C-SPAEKS/AmUiO-66-NH_(2) and a retention rate of up to 98.7%for bovine serum albumin(BSA)-contaminated ***,after several hydrophilic modifications,the flux recovery of BSA contaminants by this series of membranes increased from 56.2%to 80.55%of pure *** results of ultra-filtration flux time tests performed at room temperature showed that the series of ultrafiltration membranes remained relatively stable over a test time of 300 ***,the newly developed mixed matrix membrane showed potential for high efficiency and stability in wastewater treatment containing bovine serum proteins.

关键词： Ultrafiltration mixed matrix membranes Amino functionalization Hydrophilic modification Negatively charged