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Metal-organic framework nanocrystal-derived hollow porous materials: Synthetic strategies and emerging applications

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The Innovation 2022年第5期3卷 50-65页

作者： Xiaolu Liu gaurav verma Zhongshan Chen Baowei Hu Qifei Huang Hui Yang Shengqian Ma Xiangke Wang College of Environmental Science and Engineering North China Electric Power UniversityBeijing 102206China School of Life Science Shaoxing UniversityHuancheng West Road 508Shaoxing 312000China Department of Chemistry University of North Texas1508 W Mulberry StreetDentonTX 76201USA State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China

Metal-organic frameworks(MOFs)have garnered multidisciplinary attention due to their structural tailorability,controlled pore size,and physicochemical functions,and their inherent properties can be exploited by applying them as precursors and/or templates for fabricating derived hollow porous *** fascinating,functional properties and applications of MOFderived hollow porous materials primarily lie in their chemical composition,hollow character,and unique porous ***,a comprehensive overview of the synthetic strategies and emerging applications of hollow porous materials derived from MOF-based templates and/or precursors is *** on the role of MOFs in the preparation of hollow porous materials,the synthetic strategies are described in detail,including(1)MOFs as removable templates,(2)MOF nanocrystals as both self-sacrificing templates and precursors,(3)MOF@secondary-component core-shell composites as precursors,and(4)hollow MOF nanocrystals and their composites as ***,the applications of these hollow porous materials for chemical catalysis,electrocatalysis,energy storage and conversion,and environmental management are ***,a perspective on the research challenges and future opportunities and prospects for MOF-derived hollow materials is provided.

关键词： composites materials. porous

A robust soc-MOF platform exhibiting high gravimetric uptake and volumetric deliverable capacity for on-board methane storage

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Nano Research 2021年第2期14卷 512-517页

作者： gaurav verma Sanjay Kumar Harsh Vardhan Junyu Ren Zheng Niu Tony Pham Lukasz Wojtas Sydney Butikofer Jose C Echeverria Garcia Yu-Sheng Chen Brian Space and Shengqian Ma Department of Chemistry University of South Florida4202 E.Fowler Ave.TampaFL 33637USA ChemMatCARS Center for Advanced Radiation SourcesThe University of Chicago9700 South Cass AvenueArgonneIL 60439USA Department of Chemistry Multani Mai Modi CollegePatiala 147001India Department of Chemistry Biochemistryand PhysicsThe University of Tampa401 W.Kennedy Blvd.TampaFL 33606-1490USA Department of Chemical and Biomolecular Engineering University of Illinois at Urbana-ChampaignChampaignIL 61801USA

Emerging as an outperformed class of metal-organic frameworks(MOFs),square-octahedron(soc)topology MOFs(soc-MOFs)feature superior properties of high porosity,large gas storage capacity,and excellent thermal/chemical *** report here an iron based soc-MOF,denoted as Fe-pbpta(H4pbpta=4,4',4'',4'''-(1,4-phenylenbis(pyridine-4,2-6-triyl))-tetrabenzoic acid)possessing a very high Brunauer,Emmett and Teller(BET)surface area of 4,937 m2/g and a large pore volume of 2.15 cm3/*** MOF demonstrates by far the highest gravimetric uptake of 369 cm3(STP)/g under the DOE operational storage conditions(35 bar and 298 K)and a high volumetric deliverable capacity of 192 cc/cc at 298 K and 65 ***,Fe-pbpta exhibits high thermal and aqueous stability making it a promising candidate for on-board methane storage.

关键词： metal-organic framework(MOF) reticular chemistry methane storage aqueous stability high gravimetric and volumetric uptake

A comprehensive review on energy storage in hybrid electric vehicle

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Journal of Traffic and Transportation Engineering(English Edition) 2021年第5期8卷 621-637页

作者： Shrey verma Shubham Mishra Ambar Gaur Subhankar Chowdhury Subhashree Mohapatra gaurav Dwivedi Puneet verma Energy Centre Maulana Azad National Institute of TechnologyBhopal 462007India School of Earth and Atmospheric Sciences Queensland University of TechnologyBrisbane 4001Australia

The sharp inclination in the emissions from conventional vehicles contribute to a significant increase in environmental issues,besides the energy crises and low conversion efficiency leads to the evolution of electric vehicles(EV).Hybrid electric vehicles(HEV) have efficient fuel economy and reduce the overall running cost,but the ultimate goal is to shift completely to the pure electric *** this,the main obstruction of HEV is energy storage *** EV requires high specific power(W/kg) and high specific energy(W$h/kg) to increase the distance travelled and reduce the time required for *** main focus of this paper is on the energy sources as these are the main components in EVs towards making them eco-friendly and *** topologies of EV technology such as HEVs,plug-in HEVs,and many more have been *** topologies of EVs are based on the diverse combination of batteries,fuel cells,super-capacitor,flywheels,regenerative braking systems,which are used as energy sources and energy storage devices.

关键词： Electric vehicle Energy storage Battery electric vehicle Hybrid electric vehicles

A comprehensive review of the influence of physicochemical properties of biodiesel on combustion characteristics,engine performance and emissions

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Journal of Traffic and Transportation Engineering(English Edition) 2021年第4期8卷 510-533页

作者： Tikendra Nath verma Pankaj Shrivastava Upendra Rajak gaurav Dwivedi Siddharth Jain Ali Zare Anoop Kumar Shukla Puneet verma Department of Mechanical Engineering Maulana Azad National Institute of Technology(MANIT)Bhopal 462007India Department of Mechanical Engineering Prestige Institute of Engineering Management and ResearchIndore 452010India Department of Mechanical Engineering Rajeev Gandhi Memorial College of Engineering and TechnologyNandyal 518501India Energy Centre Maulana Azad National Institute of Technology(MANIT)Bhopal 462007India Department of Mechanical Engineering College of Engineering Roorkee(COER)Roorkee 247667India Flow Aerosols and Thermal Energy(FATE)Research GroupSchool of EngineeringDeakin UniversityBurwoodVIC 3216Australia Department of Mechanical Engineering Amity UniversityNoida 201313India School of Chemistry Physics and Mechanical EngineeringQueensland University of TechnologyBrisbaneQLD 4001Australia

Energy is a basic requirement for development in the *** continuously rising demand for energy resources and the fast depletion of fossil fuel is raises researcher's concern to focus on alternative sources of energy that can replace the shortage of fossil fuels *** is recognized as one of the potential alternative renewable energy fuels that can be easily available in a wide range in every part of the *** paper reviews biodiesel's prospect and focuses on the different fuel properties(physicochemical)of 100 biodiesels from first-,second-and third-generation followed by the evaluation of CI engine *** has been observed that the fuel properties of first-,second-and third-generation biodiesel are compatible with the ASTM *** present paper discussed the potential of various generations of biodiesel feedstocks from production *** paper also examined many aspects of these feedstocks which include different biodiesel feedstock sources,biodiesel conversion technology,and second-generation biodiesel performance and emission *** of the studies showed that biodiesel derived from plant feedstock is costly than ***,more influence is to be given to non-edible ***,the engine characteristics are shown promising behavior with biodiesel and a slight increase in NOX is also reported on using various biodiesel.

关键词： Biodiesel Physicochemical Combustion Ignition Emission

Optimizing Biodiesel Production from Karanja and Algae Oil with Nano Catalyst:RSMand ANN Approach

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Energy Engineering 2024年第9期121卷 2363-2388页

作者： Sujeet Kesharvani Sakhi Katre Suyasha Pandey gaurav Dwivedi Tikendra Nath verma Prashant Baredar Energy Centre Maulana Azad National Institute of TechnologyBhopal462003India Department of Mechanical Engineering Maulana Azad National Institute of TechnologyBhopal462003India

This study delves into biodiesel synthesis from non-edible oils and algae oil sources using Response Surface Methodology(RSM)and an Artificial Neural Network(ANN)model to optimize biodiesel *** of *** and Karanja oils is utilized,aiming to reduce free fatty acid content to 1%through single-step *** reveals peak biodiesel yield conditions:1%catalyst quantity,91.47 min reaction time,56.86℃reaction temperature,and 8.46:1 methanol to oil molar *** ANN model outperforms RSM in yield prediction *** impact assessment yields an E-factor of 0.0251 at maximum yield,indicating responsible production with minimal *** analysis reveals significant cost savings:30%-50%reduction in raw material costs by using non-edible oils,10%-15%increase in production efficiency,20%reduction in catalyst costs,and 15%-20%savings in energy *** optimized process reduces waste disposal costs by 10%-15%,enhancing overall economic ***,the widespread adoption of biodiesel offers economic,environmental,and social benefits to a diverse range of stakeholders,including farmers,producers,consumers,governments,environmental organizations,and the transportation *** among these stakeholders is essential for realizing the full potential of biodiesel as a sustainable energy solution.

关键词： Non-edible oil algae RSM ANN optimization environmental factor

A transient shift in equatorial hydrology and vegetation during the Eocene Thermal Maximum 2

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Geoscience Frontiers 2024年第5期15卷 174-181页

作者： gaurav Srivastava Harshita Bhatia Poonam verma Yogesh P.Singh Shailesh Agrawal Torsten Utescher R.C.Mehrotra Birbal Sahni Institute of Palaeosciences 53 University RoadLucknow 226007India Academy of Scientific and Innovative Research(AcSIR) Ghaziabad 201002India Senckenberg Research Institute and Natural History Museum Frankfurt/M.Senckenberg Research Station of Quaternary PalaeontologyWeimerGermany Institute for Geosciences University of BonnNussallee 853115 BonnGermany

The equatorial evergreen forests nourish the world’s biodiversity hotspots and are considered the lungs of the ***,their future survival is uncertain,due to anthropogenically increased carbon emissions and changes in the hydrological *** the changes in the hydrological cycle in the equatorial region due to an increase in carbon emission is of prime *** early Paleogene hyperthermal events are potential analogs to understand the consequences of high carbon emission on the hydrological *** this communication,we quantify the terrestrial seasonal climate using the plant proxy and infer that during the Eocene Thermal Maximum 2 when atmospheric carbon dioxide concentration was>1000 ppmv near the palaeo-equator(~0.6°N),the rainfall decreased significantly,leading to the expansion of deciduous *** study raises important questions about the future survival of equatorial rainforests and biodiversity hotspots under increased carbon emissions.

关键词： Coexistence approach Climate ETM-2 Global warming Hyperthermal Paleogene

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构建超疏水聚合物抑制催化剂水解

科学新闻 2017年第4期 188-188页

作者： Qi Sun Briana Aguila gaurav verma Xiaolong Liu Zhifeng Dai Feng Deng Xiangju Meng 肖丰收 Shengqian Ma 浙江大学化学系亚洲太平洋催化理事会

文章简介自然界中生物的一些特性往往为人类创造新型材料带来灵感和启发。例如,荷叶叶面具有极强的疏水性,使得水流聚股流下并带走表面的尘土达到自清洁的效果;水黾可以在水面上轻松行走而不划破水面。生物体的这些疏水特性关键在于其... 详细信息

文章简介自然界中生物的一些特性往往为人类创造新型材料带来灵感和启发。例如,荷叶叶面具有极强的疏水性,使得水流聚股流下并带走表面的尘土达到自清洁的效果;水黾可以在水面上轻松行走而不划破水面。生物体的这些疏水特性关键在于其特殊的微结构,即这些部位存在着的非常复杂的、多重纳米和微米级的多级孔结构。

关键词：催化剂聚合物大分子化合物超疏水

石墨炔:一种用于合成水污染物有效吸附剂的新型炭材料

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新型炭材料（中英文） 2024年第2期39卷 173-200页

作者： gaurav Sharma Yaksha verma Amit Kumar Pooja Dhiman WANG Tong-tong Florian JStadler 深圳大学材料科学与工程学院深圳市高分子科学与技术重点实验室广东省功能材料界面工程研究中心南山区生物高分子与安全性评价重点实验室广东深圳518055 International Research Centre of Nanotechnology for Himalayan Sustainability(IRCNHS) Shoolini UniversityHimachal Pradesh 173229India 西安建筑科技大学跨学科与创新研究院陕西西安710055

石墨炔(GDY)是一种新生的二维材料,其在去除水溶液中污染物的研究方面引起了广泛关注。GDY是sp和sp2杂化碳原子的框架,其在二维对称网络中存在苯环和二乙基键,因此具有优异的共轭性、独特的可调谐电子性能、以及优异的化学和热稳定性。... 详细信息

石墨炔(GDY)是一种新生的二维材料,其在去除水溶液中污染物的研究方面引起了广泛关注。GDY是sp和sp2杂化碳原子的框架,其在二维对称网络中存在苯环和二乙基键,因此具有优异的共轭性、独特的可调谐电子性能、以及优异的化学和热稳定性。GDY的分子中有C≡C键,且具有均匀分布的三角形孔,可提供更多的反应位点和多种反应路径。因而,GDY具有吸附性,其作为吸附剂时在去除污染水中的油、有机污染物、染料和金属方面表现优异。在已发表的文献中,GDY被用作吸附剂的报道十分有限。本文综述了GDY的合成方法、GDY作为吸附剂的应用以及GDY基吸附剂的表征,并展望了GDY在污染物修复中的应用前景。

关键词：石墨炔合成吸附污染物合理机制