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Bimetallic Fe-Mo sulfide/carbon nanocomposites derived from phosphomolybdic acid encapsulated MOF for efficient hydrogen generation

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Journal of Materials Science & Technology 2021年第25期84卷 76-85页

作者： Zheng Huang Zhuxian Yang mian zahid hussain Quanli Jia Yanqiu Zhu Yongde Xia College of Engineering Mathematics and Physical SciencesUniversity of ExeterExeter EX44QFUK Hennan Key Laboratory of High Temperature Functional Ceramics Zhengzhou UniversityZhengzhou450052China

To tackle the energy crisis and achieve more sustainable development,hydrogen as a clean and renewable energy resource has attracted great *** for cheap but efficient catalysts for hydrogen production from water splitting is urgently *** this report,bimetallic Fe-Mo sulfide/carbon nanocomposites that derived from a polyoxometalate phosphomolybdic acid encapsulated metal-organic framework MIL-100(PMA@MIL-100)have been generated and their applications in electrocatalytic hydrogen generation were *** PMA@MIL-100 precursor is formed via a simple one-pot hydrothermal synthesis method and the bimetallic Fe-Mo sulfide/carbon nanocomposites were obtained by chemical vapor sulfurization of PMA@MIL-100 at high *** nanocomposite samples were fully characterized by a series of techniques including X-ray diffraction,Fourier-transform infrared analysis,thermogravimetric analysis,N2 gas sorption,scanning electron microscopy,transmission electron microscopy,X-ray photoelectron spectroscopy,and were further investigated as electrocatalysts for hydrogen production from water *** hydrogen production activity of the best performed bimetallic Fe-Mo sulfide/carbon nanocomposite exhibits an overpotential of-0.321 V at 10 m A cm^(-2)and a Tafel slope of 62 m V dec^(-1)with a 53%reduction in overpotential compared to Mo-free counterpart *** dramatic improvement in catalytic performance of the Fe-Mo sulfide/carbon composite is attributed to the homogeneous distribution of the nanosized iron sulfide,MoS_(2)particles,and the formation of Fe-Mo-S phases in the S-doped porous carbon *** work has demonstrated a potential approach to fabricate complex heterogeneous catalytic materials for different applications.

关键词： MOF Nanocomposite Encapsulation Metal sulfide Hydrogen generation

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Metal-organic framework derived multi-functionalized and co-doped TiO_(2)/C nanocomposites for excellent visible-light photocatalysis

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Journal of Materials Science & Technology 2022年第6期101卷 49-59页

作者： mian zahid hussain Zhuxian Yang Ahmed M.E.Khalil Shahzad hussain Saif Ullah Awan Quanli Jia Roland A.Fischer Yanqiu Zhu Yongde Xia College of Engineering Mathematics and Physical SciencesUniversity of ExeterExeter EX44QFUnited Kingdom Department of Chemistry and Catalysis Research Centre Technical University of MunichGarching85748Germany Department of Chemical Engineering Faculty of EngineeringCairo UniversityGiza 12613Egypt Department of Physics COMSATS University Islamabad45550 Pakistan Department of Electrical Engineering National University of Sciences and TechnologyIslamabadPakistan Henan Key Laboratory of High Temperature Functional Ceramics Zhengzhou UniversityZhengzhou 450052China

Multi-functionalized and co-doped TiO_(2)/C nanocomposites were derived from the pyrolysis of Ti-MOFs at 800℃under different gaseous atmospheres and their photocatalytic performance were *** gaseous atmosphere during pyrolysis plays a critical role in determining the structural,textural,optical and physicochemical properties of the derived TiO_(2)/C composites due to the synergistic effect of nitrogen-containing species,carboxylate and sulfur functionalized porous carbon as well as N/S co-doped TiO_(2)*** the Ti-MOFs derived TiO_(2)/C composites exclusively possess homogeneously distributed TiO_(2)nanoparticles in a functionalized disc-like porous carbon matrix and demonstrate much enhanced adsorption and photodegradation performance than commercial TiO_(2)under the same *** adsorption of methylene blue(MB)in dark on these TiO_(2)/C composites are dominated with pseudo second-order kinetic model and the high adsorption capacity of MB in dark on composite TiO_(2)/C derived from MIL-125(Ti)in argon is due to its high surface area with predominant mesoporous carbon matrix in the *** composite N-O-TiO_(2)/C derived from NH2-MIL-125(Ti)in water vapor exhibited the highest photodegradation activity with 99.7%MB removal in 3 h under visible light due to the optimal anatase/rutile phasejunction,together with the formation of photoactive oxygen-rich N-O like interstitial/intraband states above the valence band of TiO_(2),as well as the presence of N-containing species and-OH/-COOH multi-functional groups with superhydrophilic nature of the *** simple one-step and easily modifiable approach can be further employed to modulate homogeneously dispersed multi-functionalized and co-doped metal oxide/carbon nanocomposites for various environment and energy-related applications.

关键词： Nanocomposite MOF derivative TiO_(2) Porous carbon Photocatalysis

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Surface functionalized N-C-TiO_(2)/C nanocomposites derived from metal-organic framework in water vapour for enhanced photocatalytic H generation

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Journal of Energy Chemistry 2021年第6期30卷 485-495,I0012页

作者： mian zahid hussain Zhuxian Yang Bart van der Linden Zheng Huang Quanli Jia Erik Cerrato Roland A.Fischer Freek Kapteijn Yanqiu Zhu Yongde Xia College of Engineering Mathematics and Physical SciencesUniversity of ExeterExeter EX44QFUnited Kingdom Department of Chemistry and Catalysis Research Center Technical University of MunichGarching 85748Germany Catalysis Engineering Chemical Engineering DepartmentDelft University of Technologyvan der Maasweg92629 HZ DelftNetherlands Henan Key Laboratory of High Temperature Functional Ceramics Zhengzhou UniversityZhengzhou 450052HenanChina Department of Chemistry University of TurinVia P.Giuria710125 TurinItaly

Surface-functionalized nitrogen/carbon co-doped polymorphic TiO_(2) phase junction nanoparticles uniformly distributed in porous carbon matrix were synthesized by a simple one-step pyrolysis of titanium based metal-organic framework(MOF),NH_(2)-MIL^(-1)25(Ti) at 700℃ under water vapour *** water vapour during the pyrolysis of NH_(2)-MIL^(-1)25(Ti) not only functionalizes the derived porous carbon matrix with carboxyl groups but also forms additional oxygen-rich N like interstitial/intraband states lying above the valence band of TiO2 along with the self-doped carbo n,which further narrows the energy band gaps of polymorphic TiO2 nanoparticles that enhance photocatalytic charge transfer *** co-catalyst,sample N-C-TiO2/CArW demonstrates H_(2) evolution activity of 426 μmol gcat-1h^(-1),which remarkably outperforms commercial TiO_(2)(P-25) and N-C-TiO_(2)/CAr with a 5-fold and 3-fold H_(2) generation,*** study clearly shows that water vapour atmosphere during the pyrolysis increases the hydrophilicity of the Ti-MOF derived composites by functionalizing porous carbon matrix with carboxylic groups,as well as enhancing the electrical conductivity and charge transfer efficiency due to the formation of additional localized oxygen-rich N like interstitial/intraband *** work also demonstrates that by optimizing the anatase-rutile phase composition of the TiO2 polymorphs,tuning the energy band gaps by N/C co-doping and functionalizing the porous carbon matrix in the N-C-TiO2/C nanocomposites,the photocatalytic H_(2) generation activity can be further enhanced.

关键词： Metal-organic framework TiO_(2) Porous carbon Nanocomposite Photocatalysis Hydrogen generation

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Decoding bone-inspired and cell-instructive cues of scaffolds for bone tissue engineering

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Engineered Regeneration 2024年第1期5卷 21-44页

作者： zahid hussain Shah Mehmood Xingzhu Liu Yuanshan Liu Guocheng Wang Renjun Pei School of Nano-Tech and Nano-Bionics University of Science and Technology of China(USTC)Hefei 230026PR China CAS Key Laboratory for Nano-Bio Interface Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of SciencesSuzhou 215123PR China Research Center for Human Tissues and Organs Degeneration Shenzhen Institute of Advanced Technology(SIAT)Chinese Academy of ScienceShenzhen 518055PR China

Bone fractures are common occurrence in clinical settings,creating a high demand for effective repair ***,limited graft availability,donor site morbidities,unpredictable clinical outcomes,immunologic reactions,infection risks,and geometrical mismatching concerns hampered tissue graft use and underscored the need for scaffolds for more effective bone reconstructions due to their tunable *** progress has been carried out in past decade in the fields of nanoceramics synthesis,bioconjugate chemistry,and composite material *** review outlines hierarchical structures and biology of bone tissue,materialistic compo-nents of scaffolds(bioceramics,polymers,bioactive drugs),featured scaffolding strategies(nanofibers,hydrogels,aerogels,bioprinting,and fiber-reinforced composite),and emphasis that hierarchical and physiochemical char-acteristics of bone should be used as an inspiration for scaffold *** review discussed how differences in materiobiological aspects of scaffolds,such as polymer/bioceramic nanocomposite,mineralized nanocomposite,matrix-rich nanocomposite,3D microenvironmental cues,pore space cues,mechanical cues,usage of physical stimulation(magnetic,electroactive,and photoactivated cues),surface cues(wettability,roughness,textured,and surface charge),and biointerface cues(cell-biomaterial interactions,cell-selective homing,and cell regula-tory strategies)modulate cellular and biological response for bone tissue *** study further outlines the challenges and benefits of integrating materiobiological cues of scaffolds for bone tissue engineering.

关键词： Bone substitute Scaffolds Mineralization Materiobiology Bone tissue engineering

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Enhancing alkyne semi-hydrogenation through engineering metal-support interactions of Pd on oxides

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Nano Research 2024年第5期17卷 3707-3713页

作者： Yuefeng Wu Xiaotong Lu Pengfei Cui Wenyu Jia Jun Zhou Yuan Wang hussain zahid Yuxin Wu Muhammad Umer Rafique Xiong Yin Baoshan Li Leyu Wang Guolei Xiang State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China College of Chemical Engineering Beijing University of Chemical TechnologyBeijing 100029China

Supported Pd catalysts show superior activities for olefin productions from alkynes through semi-hydrogenation reactions,but over-hydrogenation into alkanes highly decreases olefin *** phenylacetylene semi-hydrogenation as a model reaction,here we explore the optimization approaches toward better Pd catalysts for alkyne semi-hydrogenation through investigating support effect and metal-support *** results show that the states of Pd with supports can be tuned by varying oxide reducibility,loading ratios,and *** our system,0.06 wt.%Pd on rutile-TiO_(2) nanorods shows the highest activity owing to the synergistic effects of single-atoms and *** reducibility can change the filling degrees of Pd 4d orbitals through varying interfacial bonding strengths,which further affect catalytic activity and selectivity.

关键词： alkyne semi-hydrogenation support effect metal-support interaction Pd catalyst single-atom catalyst

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Establishing simulation model for optimizing efficiency of CNC machine using reliability-centered maintenance approach

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International Journal of Modeling, Simulation, and Scientific Computing 2019年第6期10卷 1-14页

作者： zahid hussain Hamid Jan Sarhad University of Science and Information Technology Peshawar 25000Pakistan

The objective of this work was to enhance the product’s quality by concentrating on the machine’s optimized *** order to increase the machine’s reliability,the basis of reliability-centered maintenance approach was *** purpose was to establish a planned preventive maintenance strategy to identify the machine’s critical components having a noteworthy effect on the product’s *** critical components were prioritized using failure mode and effect analysis(FMEA).The goal of the study was to decrease the ppm time interval for a CNC machine by simulating the projected preventive maintenance time *** this purpose,the simulation software ProModel 7.5 was implemented for the current preventive maintenance procedure to choose the best ppm time interval which contributed better *** dissimilar optimization approaches were applied,however,the first approach yielded the prominent total system cost and the shorter ppm *** results of the study revealed that there was an increase of USD 1878 as a result of an increase in total system cost from USD 78,365 to USD 80,*** maintenance costs were reduced from USD 4196 to USD 2248(46%).The costs associated with good parts increased from USD 8259 to USD 8294(0.4%)and the costs associated with defective parts reduced from USD 171 to USD 3(98.25%),respectively.

关键词： Simulation model CNC machine reliability-centered maintenance(RCM) failure mode and effect analysis(FMEA) planned preventive maintenance

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Microwaves spark emission spectroscopy for the analysis of cations:A simple form of atomic emission spectroscopy

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Chinese Chemical Letters 2011年第9期22卷 1084-1086页

作者： zahid hussain Khalid Mohammed Khan Khadim hussain Sadam hussain Shahnaz Perveen Department of Chemistry Abdul Wali Khan UniversityMardanPakistan H.E.J.Research Institute of Chemistry International Center for Chemical and Biological SciencesUniversity of KarachiKarachi 75270Pakistan Department of Chemistry Hazara UniversityMansehraPakistan Department of Electronics Quaid-I-Azam UniversityIslamabadPakistan PCSIR Laboratories Complex Shahrah-e-Dr.Salimuzzaman SiddiquiKarachi 75280Pakistan

A novel method for the cation analysis was investigated. The analysis is based on the sparking of the salts of metals in a microwave oven after placing in a graphite cell. The graphite cell absorbs microwaves and produces high temperature which converts the salt into light emitting species. The colour of light was found to dependent on the nature of cation, however, the intensity of the emitted light was found to be depending upon the form and shape of the graphite assembly in addition to the concentration of the salt. This communication presents explanation for all these observations and for the systematic and quantitative analysis using microwave spark emission technique.

关键词： Microwave spark Cation analysis Spark colour Graphite cell Atomic emission

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Synergistic effects of combined therapy of curcumin and Fructus Ligustri Lucidi for treatment of osteoporosis: cellular and molecular evidence of enhanced bone formation

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Journal of Integrative Medicine 2019年第1期17卷 38-45页

作者： Syed Nasir Abbas Bukhari Fahad hussain Hnin Ei Thu zahid hussain Department of Pharmaceutical Chemistry College of Pharmacy Aljouf University Institute of Molecular Biology and Biotechnology (IMBB) The University of Lahore Department of Pharmacology and Dental Therapeutics Faculty of Dentistry Lincoln University CollegePetaling Jaya 47301 Selangor Malaysia Department of Pharmaceutics Faculty of Pharmacy Universiti Teknologi MARA (UiTM)

Objective: The present study explored the effects of the combined herbal therapy consisting of curcumin(CUR) and Fructus Ligustri Lucidi(FLL) on aspects of bone ***: Prior to analyzing the ability of this novel combined herbal therapy to promote aspects of bone regeneration, its cytotoxicity was determined using MC3 T3-E1 cells(pre-osteoblast model). Cell proliferation was evaluated using phase-contrast microscopy and cell differentiation was estimated using alkaline phosphatase activity. The effect of the combined herbal therapy(CUR + FLL) was also assessed in terms of mineralization in the extracellular matrix(ECM) of cultured cells. Further, to explore the molecular mechanisms of bone formation, time-dependent expression of bone-regulating protein biomarkers was also ***: Combined herbal therapy(CUR + FLL) significantly upregulated the viability, proliferation and differentiation of MC3 T3-E1 cells compared to the monotherapy of CUR or FLL. The magnitude of ECM mineralization(calcium deposition) was also higher in MC3 T3-E1 cells treated with combined *** time-dependent expression of bone-forming protein biomarkers revealed that the tendency of expression of these bone-regulating proteins was remarkably higher in cells treated with combined ***: The co-administration of CUR and FLL had superior promotion of elements of bone regeneration in cultured cells, thus could be a promising alternative herbal therapy for the management of bone erosive disorders such as osteoporosis.

关键词： Osteoporosis Curcumin Fructus Ligustri Lucidi Combined herbal therapy Cell proliferation Cell differentiation Bone formation

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Effect of shipping activity on warming trends in the Canadian Arctic

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Journal of Geographical Sciences 2021年第3期31卷 369-388页

作者： mian Sabir hussain Inhye HEO Sujeong IM Seungho LEE Climate Research Institute Konkuk UniversitySeoulKorea Department of Geography Konkuk UniversitySeoulKorea

This paper presents a detailed account of the effect of shipping activity on the increasing trends of air temperatures in the Canadian Arctic region for the period of 1980–*** trend of temperature has gained significant attention with respect to shipping activities and sea ice area in the Canadian ***,sea ice area and shipping traffic datasets were investigated,and simple linear regression analyses were conducted to predict the rate of change(per decade)of the average temperature,considering winter(January)and summer(July)*** results indicate that temperature generally increased over the studied *** warming trend was observed during July,with an increase of up to 1℃,for the Canadian Arctic *** increasing trend of temperature was observed during July from the lower to higher *** increase in temperature during July is speculated to increase the melting of *** also show a decline in sea ice area has a significant positive effect on the shipping traffic,and the numbers of marine vessel continue to increase in the *** increase in temperature causes the breaking of sea ice due to shipping activities over northern Arctic Canada.

关键词： shipping activity increasing trend of temperature sea ice area Canadian Arctic

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Phytopharmacological potential of different species of Morus alba and their bioactive phytochemicals:A review

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Asian Pacific Journal of Tropical Biomedicine 2017年第10期7卷 950-956页

作者： Fahad hussain Zohaib Rana Hassan Shafique Arif Malik zahid hussain Institute of Molecular Biology and Biotechnology(IMBB) The University of LahoreRaiwind Road55150LahorePakistan Department of Pharmaceutics Faculty of PharmacyUniversiti Teknologi MARAPuncak Alam CampusBandar Puncak Alam42300SelangorMalaysia

Medicinal plants of Moraceae family have been well-recognized traditionally due to their versatile applications in various fields including agriculture, cosmetic and food as well as in pharmaceutical industries. Their biomedical and medicinal importance is reflected from their broad range of pharmacological activities for treatment of various inflammatory conditions, cancer, infectious diseases, and gastrointestinal disorders. The present review was aimed to summarize and critically discuss the biomedical implications of Morus species, their bioactive compounds, and phytochemicals. Bioactivity guided fractionation of these medicinal plants revealed that different types of bioactive phytochemicals and secondary metabolites such as steroids, saponins, alkaloids, glycosides and phenolic compounds including terpenoids, flavonoids, anthocyanins and tannins were present. The critical analysis of the literature revealed that the aqueous, methanolic, and ethanolic extracts of Morus species and their bioactive compounds exhibit remarkable anti-oxidative,anti-diabetic, anti-stress, nephroprotective, antimicrobial, anti-mutagenic, anticancer,anxiolytic, hepatoprotective, anthelmintic, antimicrobial, immune-modulatory and cholesterol lowering effects. Based on the literature review and bioactivity guided investigation of Morus species and their phytomedicinal effects, we anticipate that these herbal products hold excellent potential for future research.

关键词： Moraceae Phytochemicals Pharmacological activities Anti-inflammatory Immunomodulatory Anticancer

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