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Journal of Energy Chemistry 2019年第3期28卷 71-77页

作者： Lei Zhang Daochuan Jiang rana Muhammad Irfan shan Tang Xin Chen Pingwu Du Hefei National Laboratory of Physical science at the Microscale CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) University of Science and Technology of China (USTC)

Photocatalytic conversion of solar energy into hydrogen and high value-added fine chemicals has attracted increasing attention. Herein, we demonstrate an efficient photocatalytic system for simultaneous hydrogen evolution and benzaldehyde production by dehydrogenation of benzyl alcohol over Nidecorated Zn_(0.5)Cd_(0.5)s solid solution under visible light. The photocatalytic system shows an excellent hydrogen production rate of 666.3 μmol h^(-1) with high stability. The optimal apparent quantum yield of52.5% is obtained at 420 nm. This noble-metal-free photocatalytic system displays much higher activity than pure Zn_(0.5)Cd_(0.5)s and Pt-loaded Zn_(0.5)Cd_(0.5)s solid solution. Further studies reveal that the metallic Ni nanocrystals play an important role in accelerating the separation of photogenerated charge carriers and the subsequent cleavage of α-C–H bond during dehydrogenation of benzyl alcohol.

关键词： Photocatalysis Benzyl alcohol oxidation Hydrogen production Nickel solid solution Charge separation

Importance of 3-D image reconstruction of spectraldomain OCT on outcome of grid laser photocoagulation for diffuse diabetic macular edema

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International Journal of Ophthalmology(English edition) 2013年第6期6卷 836-843页

作者： Avinoam Ophir rana Hanna Michael R.Martinez Division of Ophthalmology Hillel-Yaffe Medical Center The Ruth and Bruce Rappaport Faculty of Medicine theTechnion

AIM:To present the outcome of modified grid laser photocoagulation(GLP)in diffuse diabetic macular edema(DDME)in eyes without extrafoveal and/or vitreofoveal ***:Inclusion criteria for the retrospective study were DDME eyes of patients with typeⅡdiabetes mellitus that had≥4 months of follow-up following *** one eye per patient was *** 3-D spectral-domain optical coherence tomography(3-D sDOCT),eyes that had either extrafoveal or vitreofoveal traction,or had been previously treated by an intravitreal medication(s)were *** DDME eyes were divided into 4 groups:A)"Classic"DDME that involved the central macula;B)edema did not involve the macular center;C)eyes associated with central epiretinal membrane(ERM);D)DDME that was associated with macular capillary dropout≥2 disc-diameter(DD).REsULTs:GLP outcome in 35 DDME eyes after 4-24(mean,13.1±6.9)months was as follows:Group A)18eyes with"classic"*** one or 2(mean,1.2)GLP treatments,best-corrected visual acuity(BCVA)improved by 1-2 snellen lines in 44.4%(8/18)of eyes,and worsened by 1 line in 11.1%(2/18).Central macular thickness(CMT)improved by 7%-49%(mean,26.6%)in77.8%(14/18)of *** of CMT worsening(n=4)were commonly explainable,predominantly(n=3)associated with emergence of extrafoveal traction,5-9months *** B)GLP(s)in DDME that did not involve the macular center(n=6)resulted in improved BCVA by 1-2 lines in 2 ***,the central macula became involved in the edema process after the GLP in 3(50%)eyes,associated with an emergence of extrafoveal traction in one of these eyes 4months following the *** C)GLP failed in all 5eyes associated with central *** D)GLP was of partial benefit in 2 of 6 treated eyes with macular capillary dropout≥***:Eyes with DDME that involved the macular center were found to achieve favourable outcomes after GLP(s)during mid-term follow-up,unless complicated pre-GLP or post-GLP by vltreoretinal interfa

关键词： extrafoveal traction vitreofoveal traction grid laser macular edema non-center-involved macular edema epiretinal membrane Evi membrane macular capillary dropout 3-D spectral-domain optical coherence tomography

无贵金属光催化剂VC/Cds纳米线将苯甲醇选择性氧化为苯甲醛并产氢

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Chinese Journal of Catalysis 2022年第4期43卷 1165-1175页

作者： Muhammad Tayyab 刘玉洁敏世雄 rana Muhammad Irfan 朱乔虹周亮雷菊英张金龙华东理工大学化学与分子工程学院费林加诺贝尔奖科学家联合研究中心精密化学与分子工程国际联合研究实验室上海多介质环境催化与资源利用工程研究中心先进材料重点实验室上海200237 华东理工大学工业废水处理国家工程实验室上海200237 华东理工大学化工过程环境风险评估与控制国家环境保护重点实验室上海200237 北方民族大学化学化工学院宁夏银川750021 苏州大学苏州能源与材料创新研究院(sIEMIs)能源学院江苏苏州215006

太阳能制氢作为一种绿色、实用、可再生的能源生产技术越来越受到人们的关注.传统的光解水产氢通常用三乙醇胺、硫化钠/亚硫酸钠、乳酸、甲醇、抗坏血酸和甲醇等做牺牲剂,这些试剂的加入不仅会污染环境,还会增加制氢成本.而目前完全无... 详细信息

太阳能制氢作为一种绿色、实用、可再生的能源生产技术越来越受到人们的关注.传统的光解水产氢通常用三乙醇胺、硫化钠/亚硫酸钠、乳酸、甲醇、抗坏血酸和甲醇等做牺牲剂,这些试剂的加入不仅会污染环境,还会增加制氢成本.而目前完全无牺牲剂体系的产氢效率普遍较低,使得发展经济绿色的牺牲剂体系尤为迫切.通过光催化在单一水性体系中同时生产可储存和可再生的氢气与高附加值的有机化学品是一种新兴环保的策略.本文采用简单的静电自组装和煅烧方法将碳化钒(VC)和Cds纳米线(NW)复合形成VC/Cs.结果表明,与原始的Cds NWs相比,负载适量VC的Cds NWs的光催化活性显著提高.然而,同时促进光解水产氢和苯甲醇选择性氧化的机理仍需要进一步探究.X射线衍射谱、高倍透射电子显微镜、扫描透射电子显微镜以及光电子能谱结果表明,VC和Cds NW是紧密结合的,且Cd,s,C和V元素均匀分布,由于两者之间的紧密结合引起了催化剂颜色变化.紫外可见光谱(UV-Vis)结果表明,样品的光吸收范围增大,但吸收带边没有发生明显改变.当采用Na_(2)s·9H_(2)O和Na_(2)sO_(3)做牺牲剂时,VC/Cs的产氢活性明显高于Pt负载的Cds,说明VC是一种非常有利于产氢的非贵金属助催化剂.当改用苯甲醇(BO)做牺牲剂时,产氢速率明显增加,同时苯甲醇选择性氧化成苯甲醛(BD).进一步增加VC的负载量,样品产氢活性先增加后减小;当VC的负载量达到15%(VC/Cs-15)时,在可见光(λ>420 nm)照射2 h后产氢效率达到20.5 mmol g^(–1) h^(–1),BO转化率为41%,BD选择性超过99%,约为Cds NW的661倍.将光活性测试时间由2 h延长至4 h,BO转化率由41%提高到58%,但BD选择性降至88%.样品VC/Cs-15上BD和H_(2)生成趋势与UV-Vis漫反射光谱结果一致,表明反应是通过光催化过程进行的.此外,VC/Cs-15在单色420 nm处产生BD和H_(2)的表观量子效率约为7.5%.光催化活性的增强是由于VC的加入降低了样品的Zeta电位,使其对BO具有更强的吸附作用,同时VC在Cds NWs上的牢固附着为质子还原提供了更多的活性位点,通过减少电荷传输距离和提供更宽的电子传输通道来增强光生电子的传输.综上,本文设计的同时产氢和生成高附加值有机化学品的方法光解水产氢提供了新思路.

关键词：产氢选择性氧化苯甲醛无贵金属可见光

separator coatings as efficient physical and chemical hosts of polysulfides for high-sulfur-loaded rechargeable lithium–sulfur batteries

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Journal of Energy Chemistry 2020年第5期29卷 51-60页

作者： Masud rana Ming Li Qiu He Bin Luo Lianzhou Wang Ian Gentle Ruth Knibbe Materials Engineering School of Mechanical and Mining EngineeringThe University of QueenslandSt LuciaQLD 4072Australia Nanomaterials Centre School of Chemical Engineering and Australian Institute for Bioengineering and NanotechnologySt LuciaThe University of Queensland QLD 4072Australia school of Chemistry and Molecular Biosciences Faculty of ScienceThe University of QueenslandSt LuciaQLD 4072Australia state school Key Laboratory of silicate Materials for Architectures International School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070HubeiChina

Lithium-sulfur batteries(LsBs)are promising alternative energy storage devices to the commercial lithium-ion ***,the LsBs have several limitations including the low electronic conductivity of sulfur(5×10^-30s cm^-1),associated lithium polysulfides(Pss),and their migration from the cathode to the *** this study,a separator coated with a Ketjen black(KB)/Nafion composite was used in an LsB with a sulfur loading up to 7.88 mg cm^-2to mitigate the Ps migration.A minimum specific capacity(Cs)loss of 0.06%was obtained at 0.2 C-rate at a high sulfur loading of 4.39 mg cm^-***,an initial areal capacity up to 6.70 mAh cm^-2 was obtained at a sulfur loading of 7.88 mg cm^-*** low Cs loss and high areal capacity associated with the high sulfur loading are attributed to the large surface area of the KB and sulfonate group(sO3^-)of Nafion,respectively,which could physically and chemically trap the Pss.

关键词： Lithium-sulfur battery separator coating Physical and chemical confinement self-discharge High sulfur loading specific capacity loss High areal capacity

Two-component modeling for non-Newtonian nanofluid slip flow and heat transfer over sheet: Lie group approach

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Applied Mathematics and Mechanics(English Edition) 2016年第10期37卷 1325-1340页

作者： P.rana M.J.UDDIN Y.GUPTA A.I.M.IsMAIL Department of Mathematics Jaypee Institute of Information Technology school of Mathematical sciences Universiti Sains Malaysia Department of Mathematics American International University-Bangladesh

The present paper deals with the multiple solutions and their stability analy- sis of non-Newtonian micropolar nanofluid slip flow past a shrinking sheet in the presence of a passively controlled nanoparticle boundary condition. The Lie group transformation is used to find the similarity transformations which transform the governing transport equations to a system of coupled ordinary differential equations with boundary condi- tions. These coupled set of ordinary differential equation is then solved using the Runge- Kutta-Fehlberg fourth-fifth order （RKF45） method and the ode15s solver in MATLAB. For stability analysis, the eigenvalue problem is solved to check the physically realizable solution. The upper branch is found to be stable, whereas the lower branch is unsta- ble. The critical values （turning points） for suction （0 〈 sc 〈 s） and the shrinking parameter （Xc 〈 X 〈 0） are also shown graphically for both no-slip and multiple-slip conditions. Multiple regression analysis for the stable solution is carried out to inves- tigate the impact of various pertinent parameters on heat transfer rates, The Nusselt number is found to be a decreasing function of the thermophoresis and Brownian motion parameters.

关键词： micropolar nanofluid stability multiple-slip Lie group MATLAB

Comparative Efficacy of Weed Control Practices for Parthenium Weed and sunflower Crop under Varying Tillage systems

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Phyton-International Journal of Experimental Botany 2020年第3期89卷 727-742页

作者： Noor Ahmad rana Nadeem Abbas Asif Tanveer Zulfiqar Ahmad saqib Deaprtment of Agronomy University of Agriculture FaisalabadFaisalabad7800Pakistan Institute of soil and Environmental science University of Agriculture FaisalabadFaisalabad7800Pakistan

Parthenium poses serious threat to modern crop production system and necessitate evaluating control practices for its effective *** of different weed control practices for controlling parthenium was explored in conventional and deep tillage systems in the field *** hoeing(20 and 35 days after emergence),s-Metolachlor(pre-emergence herbicide),sorghum straw mulch@5 tons ha-1 and combination of hand hoeing and sorghum straw mulch(hand hoeing at 20 and straw mulch at 35 days after emergence)were used as weed control *** check where no weed control measure was applied was also included in this experiment for *** concluded that the all weed management treatments significantly reduced parthenium density,its fresh and dry biomass during both the years of study as compared to weedy *** sunflower achene yield was recorded in hand hoeing(20 and 35 days after emergence)in combination with deep ***,mold bold plough used for the purpose of deep tillage should be encouraged for better control of parthenium and higher achene yield of sunflower crop(3293.3 kg ha^(-1) in 2017 and 3221.3 kg ha^(-1) in 2018).Moreover,is also inferred that total dose of herbicide might be reduced by using hoeing and mulching in an integrated way.

关键词： Parthenium mulch hoeing tillage s-metolachlor sunflower

Near-field enhancement of optical second harmonic generation in hybrid gold-lithium niobate nanostructures

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Light(science & Applications) 2023年第5期12卷 855-866页

作者： rana Faryad Ali Jacob A.Busche saeid Kamal David J.Masiello Byron D.Gates Department of Chemistry and 4D LABs Simon Fraser UniversityBurnabyBCV5A 1S6Canada Department of Chemistry University of WashingtonSeattleWA 98195USA

Nanophotonics research has focused recently on the ability of nonlinear optical processes to mediate and transform optical signals in a myriad of novel devices,including optical modulators,transducers,color filters,photodetectors,photon sources,and ultrafast optical *** inherent weakness of optical nonlinearities at smaller scales has,however,hindered the realization of efficient miniaturized devices,and strategies for enhancing both device efficiencies and synthesis throughput via nanoengineering remain ***,we demonstrate a novel mechanism by which second harmonic generation,a prototypical nonlinear optical phenomenon,from individual lithium niobate particles can be significantly enhanced through nonradiative coupling to the localized surface plasmon resonances of embedded gold nanoparticles.A joint experimental and theoretical investigation of single mesoporous lithium niobate particles coated with a dispersed layer of~10 nm diameter gold nanoparticles shows that a~32-fold enhancement of second harmonic generation can be achieved without introducing finely tailored radiative nanoantennas to mediate photon transfer to or from the nonlinear *** work highlights the limitations of current strategies for enhancing nonlinear optical phenomena and proposes a route through which a new class of subwavelength nonlinear optical platforms can be designed to maximize nonlinear efficiencies through near-field energy exchange.

关键词： material lithium harmonic

Detailed investigation of optimized alkali catalyzed transesterification of Jatropha oil for biodiesel production

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Journal of Energy Chemistry 2015年第3期24卷 331-336页

作者： Waqas Ahmed Muhammad Faizan Nazar syed Danish Ali Usman Ali rana salah Ud-Din Khan National Centre for Physics Quaid-i-Azam University Campus Office of Research Innovation and CommercializationUniversity of Gujrat Department of Chemistry University of Gujrat sustainable Energy Technologies (sET) Center College of EngineeringPO-Box 800King Saud University

The non-edible oils are believed to be one of the major feedstock for the production of biodiesel in *** the present study,we investigated the production of Jatropha oil methyl esters（JOMEs） via alkali-catalyzed transesterification *** biophysical characteristics of Jatropha oil were found within the optimal range in accordance with AsTM standards as a substitute diesel *** chemical composition and production yield of as-synthesized biodiesel were confirmed by various analytical techniques such as FT-IR,1H NMR,13 C NMR and gas chromatography coupled with mass spectrometry.A high percentage conversion,～96.09%,of fatty acids into esters was achieved under optimized transesterification conditions with 6 ：1 oil to methanol ratio and 0.9 wt% Na OH for 50 min at ～60°***,twelve fatty acids methyl esters（FAME） were quantified in the GC/Ms analysis and it was interesting to note that the mass fragmentation pattern of saturated,monounsaturated and diunsaturated FAME was comparable with the literature reported values.

关键词： Jatropha oil methyl esters transesterification biodiesel fuel gas chromatography mass spectrometry

Dielectric spectroscopy and structural characterization of nano-filler-loaded epoxy resin

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Journal of Advanced Dielectrics 2021年第2期11卷 15-26页

作者： s.G.Thakor V.A.rana H.P.Vankar T.R.Pandit Department of Physics School of SciencesGujarat University Ahmedabad 380009GujaratIndia

This work outlines the characterization of epoxy resin[Bisphenol A-(epichlorhydrin):epoxy]and hardener[N(3-dimethylaminopropyl)-1,3-propylenediamine]with various inorganic *** characterizations of epoxy,hardener,neat epoxy(epoxy+hardener)and nano-epoxy(nano-filler+neat epoxy)composites loaded with 1 wt.%of inorganic nano-fillers(siO_(2),Al_(2)O_(3),TiO_(2)and ZnO)were carried out using precision LCR meter,over the frequency range of 1 kHz-2 MHz at a constant temperature of 300.15 *** structural information of nano-fillers,neat epoxy and nano-epoxy composites was understood by Fourier transform infrared spectroscopy and by ***,hardness and shear strength(shear punch)were also determined in order to gain additional information about the mechanical properties of epoxy *** of inorganic nano-fillers on the dielectric properties,structural chemistry and mechanical properties of neat epoxy composite is discussed thoroughly in this study.

关键词： Epoxy resin nano-fillers dielectric relaxation spectroscopy FTIR mechanical properties XRD

Adsorption of Anionic and Cationic Dyes from Textile Effluents by Activated Carbon Prepared from sawdust and Fish scale

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Advances in Chemical Engineering and science 2023年第3期13卷 189-202页

作者： Rumana A. Jahan Md. Mahedi Hassan Ashequl Alam rana Mohammad Mainul Karim Centre for Advanced Research in sciences University of Dhaka Dhaka Bangladesh Department of Applied Chemistry and Chemical Engineering University of Dhaka Dhaka Bangladesh

In Bangladesh, there are thousands of textile-dying industries spread across the country’s many regions, the majority of which involve knitting and dying. The dyeing industry uses an enormous quantity of water, as well as colors and chemicals. After the dying process has been completed, they also release a significant amount of wastewater. Cotton, wool, and polyester fiber are typically dyed with textile dyes such as reactive, acid, and disperse dyes. These dyes are utilized most frequently in the respective sectors. The dyes’ colorants are extremely poisonous and dangerous to all forms of life, including aquatic life and living things. The present work has been intended to investigate whether or not it is practicable to remove commonly used textile dyes simultaneously from an aqueous dye solution using an adsorption technique that makes use of a variety of different adsorbents. This study focuses on the removal of color from two distinct types of dyes—Methylene Blue and Reactive Blue-250 which are cationic and anionic in nature respectively, using two different types of activated carbon adsorbents prepared from sawdust and fish scale. Dye removal capacity was tested as a function of contact time, the dosage of the adsorbent, pH during the treatment process, temperature and initial concentration of dye. The applicability of the Langmuir and Freundlich adsorption isotherms in describing experimental data was investigated. The micro and mesoporous activated carbon prepared from sawdust and fish scale identified by scanning Electron Microscopy (sEM) images indicated that such adsorbents with a large surface area have more dye adsorption potential whereas the variation in dye adsorption occurs due to variation in surface area. From the overall experimental data, maximum removal of 95.39% and 87.92% was found for Methylene Blue and Reactive Blue-250 respectively by sawdust, and 90.64% removal of Methylene Blue by using fish scale.

关键词： Textile Wastewater Ionic Dyes Removal Activated Carbon Adsorbent