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Integrating high-entropy alloy oxides with porous wood architectures for boosted salt-resistant water evaporation

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Rare Metals 2023年第12期42卷 3960-3968页

作者： De-Qi Fan Ye-Mei Liao Xiang Wang Yi Lu Yan Mi Xiao-Fei Yang Jiangsu Co-Innovation Center of Efficient Processing and Utilization of forest Resources International Innovation Center for Forest Chemicals and MaterialsCollege of Chemical EngineeringNanjing Forestry UniversityNanjing 210037China College of Science Nanjing Forestry UniversityNanjing 210037China Key Laboratory of Chemistry and Engineering of forest products State Ethnic Affairs CommissionGuangxi Key Laboratory of Chemistry and Engineering of Forest ProductsGuangxi Minzu UniversityNanning 530006China

Solar-driven interfacial desalination technology has recently emerged as a promising way to realize seawater desalination with high energy conversion ***,salt accumulation on solar absorber surface significantly retards desalination rate,especially for highsalinity ***,a vertical Janus-interface saltresistant solar evaporator is constructed for simultaneous efficient solar absorption and stable high-salinity desalination based on the assembly of hydrophilic delignification wood(DW),high-entropy alloy oxides(HEAO),and hydrophobic polydimethylsiloxane(PDMS).

关键词： alloy entropy oxides

Two birds with one stone:Functionalized wood composites for efficient photocatalytic hydrogen production and solar water evaporation

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Chinese Chemical Letters 2024年第9期35卷 392-397页

作者： Deqi Fan Yicheng Tang Yemei Liao Yan Mi Yi Lu Xiaofei Yang College of Chemical Engineering Nanjing Forestry UniversityNanjing 210037China Jiangsu Co-Innovation Center of Efficient Processing and Utilization of forest Resources International Innovation Center for Forest Chemicals and MaterialsCollege of ScienceNanjing Forestry UniversityNanjing 210037China Key Laboratory of Chemistry and Engineering of forest products State Ethnic Affairs CommissionGuangxi Key Laboratory of Chemistry and Engineering of Forest ProductsGuangxi Minzu UniversityNanning 530006China

Maximizing solar energy utilization is a persistent challenge in photo catalysis,which determines sustainable solar-driven photocatalytic *** thermal-coupled photo catalysis is considered as a promising solution to tackle the issues of sustainable energy scarcity and environmental pollution by harvesting the full-spectrum solar ***,a highly efficient photo thermal-accelerated photo catalysis system is elaborately established,in which the assembled carbonized stick/Nb_(2)C MXene evaporator can heat water into vapor and the integrated g-C_(3)N_(4)photocatalyst further enables high-efficiency photocatalytic hydrogen *** designed hyperboloid wood-based architecture possesses a multiphase interface of water steam/catalyst/hydrogen to reduce the transport resistance of hydrogen gas in liquid and ultimately maximize the output of hydrogen ***,this coupled photothermal-photocatalytic system achieves a stable solar evaporation rate of 2.16 kg m^(-1)h^(-1)under one sun irradiation and highly efficient hydrogen-evolving rate of 3096μmol g^(-1)h^(-1).This work paves a way to explore the improvement of photocatalytic hydrogen production by synergic photothermal effect for potential applications in renewable solar energy utilization and hydrogen production.

关键词： Photocatalysis Photothermal Nb_(2)C MXene g-C_(3)N_(4) Wood

Preparation and Characterization of Tung Oil Toughened Modified Phenolic Foams with Enhanced Mechanical Properties and Smoke Suppression

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Journal of Renewable Materials 2020年第5期8卷 535-547页

作者： Fei Song Puyou Jia Caiying Bo Xiaoli Ren Lihong Hu Yonghong Zhou Institute of Chemical Industry of forest products Chinese Academy of ForestryNational Engineering Laboratory for Biomass Chemical UtilizationCo-Innovation Center of Efficient Processing and Utilization of Forest ResourcesKey Laboratory of Chemical Engineering of Forest ProductsNational Forestry and Grassland AdministrationKey Laboratory of Biomass Energy and MaterialsNanjing210042China Nanjing forestry University Nanjing210037China

In this study,we prepared a series of tung oil phenolic foams(TPF)by a one-pot *** FT-IR and 1H NMR spectra confirm the successful Friedel-Crafts grafting of phenol to the long-chain alkyl group in tung *** TPFs exhibit enhanced mechanical properties,including compressive and flexural strengths of up to 0.278±0.036 MPa and 0.450±0.017 MPa,respectively,which represent increases of 68.75%and 86.72%over those of pure phenolic foam(PF).SEM spectra reveal the TPF microstructure to have uniform hexagonal cell morphology,narrower cell size distribution,and smaller mean cell size,suggesting enhanced mechanical *** TPF total smoke release decreased by 74.23%,indicating that the long alkyl chain significantly improves smoke suppression of the combusting ***,due to the flammability of the alkyl chains,the TPF limiting oxygen index decreases with increasing tung oil ***,TPF exhibits reduced thermal stability and high-temperature charring rate,elevated peak and mean heat release rates,and higher total heat release compared with pure ***,future research will focus on the use of tung oil modified flame retardant to provide more robust phenolic foams.

关键词： Tung oil Friedel-Craft reaction phenolic foams mechanical properties smoke suppression

Advanced natural products chemistry research in China between 2015 and 2017

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Chinese Journal of Natural Medicines 2018年第12期16卷 881-906页

作者： YANG Guo-Xun MA Guang-Lei LI Hao HUANG Ting XIONG Juan HU Jin-Feng Department of Natural products Chemistry School of Pharmacy Fudan University

In this review, we intensively focus on the advances in research of natural products(NPs) discovery carried out by domestic scholars in China from 2015 through 2017. In general, a total of 1811 publications(1479 in English and 332 in Chinese) were accumulated regarding newly isolated NPs from plants, microorganisms, and marine sources. As a result, 277 selected papers concerning naturally occurring compounds with extraordinary frameworks, origins, and promising activities were discussed in this review article, mainly organized according to their structural classes and novelties.

关键词： Natural products Chemistry Novel Structures Research Progress Review

Highly Strong,Tough,and Cryogenically Adaptive Hydrogel Ionic Conductors via Coordination Interactions

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Research 2024年第3期2024卷 703-713页

作者： Zhuomin Wang Siheng Wang Lei Zhang He Liu Xu Xu Institute of Chemical Industry of forestry products Key Laboratory of Biomass Energy and MaterialJiangsu ProvinceKey Laboratory of Chemical Engineering of Forest ProductsNational Forestry and Grassland AdministrationNational Engineering Research Center of Low-Carbon Processing and Utilization of Forest BiomassJiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest ResourcesChinese Academy of ForestryNanjing 210042China College of Chemical Engineering Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest ResourcesNanjing Forestry UniversityNanjing 210037China.

Despite the promise of high flexibility and conformability of hydrogel ionic conductors,existing polymeric conductive hydrogels have long suffered from compromises in mechanical,electrical,and cryoadaptive properties due to monotonous functional improvement strategies,leading to lingering ***,we propose an all-in-one strategy for the preparation of poly(acrylic acid)/cellulose(PAA/Cel)hydrogel ionic conductors in a facile yet effective manner combining acrylic acid and salt-dissolved cellulose,in which abundant zinc ions simultaneously form strong coordination interactions with the two polymers,while free solute salts contribute to ionic conductivity and bind water molecules to prevent ***,the developed PAA/Cel hydrogel simultaneously achieved excellent mechanical,conductive,and cryogenically adaptive properties,with performances of 42.5 MPa for compressive strength,1.6 MPa for tensile strength,896.9%for stretchability,9.2 MJ m^(−3)for toughness,59.5 kJ m^(−2)for fracture energy,and 13.9 and 6.2 mS cm^(−1)for ionic conductivity at 25 and−70°C,*** by these features,the resultant hydrogel ionic conductor is further demonstrated to be assembled as a self-powered electronic skin(e-skin)with high signal-to-noise ratio for use in monitoring movement and physiological signals regardless of cold temperatures,with hinting that could go beyond high-performance hydrogel ionic conductors.

关键词： Highly freezing salts

Synthesis, Crystal Structure, and Herbicidal Activity of(3R,4R)-4,7,7-Trimethyl-6-oxabicyclo[3.2.1]octane-3,4-diol Mono-fatty Acid Esters

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Chinese Journal of Structural Chemistry 2019年第2期38卷 263-272,167页

作者： HUANG Dao-Zhan LAN Hong-Yun LU Jian-Fang ZHOU Yan College of Chemistry and Chemical Engineering Guangxi University for Nationalities Guangxi Key Laboratory of Chemistry and Engineering of forest products Guangxi University for Nationalities

Four mono-fatty acid esters(Ia～d) were synthesized via the esterification of(3R,4R)-4,7,7-trimethyl-6-oxabicyclo[3.2.1]octane-3,4-diol(I) with fatty acid chlorides(CH_3(CH_2)_nCOCl, n = 0, 2, 4, 6) and structurally characterized by means of H RMS, IR, ~1 H-NMR, ^(13)C-NMR and X-ray diffraction. Compounds Ia～d all belong to monoclinic system, P2_1/c space group. Intermolecular O(2)–H(2)···O(1) hydrogen bonds, intramolecular O(2)–H(2)···O(3) hydrogen bonds and van der Waals' interaction between fatty acid ester groups link each of the mono-fatty acid ester molecules into a bilayer structure similar to liposome with the exposed hydrophobic moiety and the sandwiched lipophilic moiety. Especially, compounds Ia～d could be dissoluble or scattered in aqueous solution and showed hydrophilic/lipophilic property-dependent herbicidal activity against the dicotyledon plant rape(Brassica campestris) and the monocotyledon plant barnyard grass(Echinochloa crus galli). At the concentration of 10 mmol·L^(-1), the inhibition rates of compounds Ia～d against the root growth of rape are 31.9, 90.8, 99.5 and 100%, respectively and the inhibition rates against the shoot elongation of barnyard grass are 19.3, 50.0, 80.2 and 100%, respectively.

关键词： monoterpene oxabicyclodiol mono-fatty acid ester crystal structure hydrophilic-lipophilic property herbicidal activity

An improved genetic algorithm for searching for pollution sources

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Water Science and Engineering 2013年第4期6卷 392-401页

作者： Quan-min BU Zhan-jun WANG Xing TONG School of Government Nanjing University Center for Social Risk and Public Crisis Management of Nanjing University Institute of Chemical Industry of forest products

As an optimization method that has experienced rapid development over the past 20 years, the genetic algorithm has been successfully applied in many fields, but it requires repeated searches based on the characteristics of high-speed computer calculation and conditions of the known relationship between the objective function and independent variables. There are several hundred generations of evolvement, but the functional relationship is unknown in pollution source searches. Therefore, the genetic algorithm cannot be used directly. Certain improvements need to be made based on the actual situation, so that the genetic algorithm can adapt to the actual conditions of environmental problems, and can be used in environmental monitoring and environmental quality assessment. Therefore, a series of methods are proposed for the improvement of the genetic algorithm：（1） the initial generation of individual groups should be artificially set and move from lightly polluted areas to heavily polluted areas; （2） intervention measures should be introduced in the competition between individuals; （3） guide individuals should be added; and （4） specific improvement programs should be put forward. Finally, the scientific rigor and rationality of the improved genetic algorithm are proven through an example.

关键词： genetic algorithm fitness selection crossover mutation pollution sources

Novel Synthesis,Crystal Structure and Herbicidal Activity of(3R,4R)-4,7,7-Trimethyl-6-oxabicyclo[3.2.1]octane-3,4-diol

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Chinese Journal of Structural Chemistry 2015年第12期34卷 1819-1824页

作者：赵志勇黄道战蓝虹云蒋少芳甄月文 College of Chemistry and Chemical Engineering Guangxi University for Nationalities Guangxi Key Laboratory of Chemistry and Engineering of forest products Guangxi University for Nationalities

The title compound, （3R,4R）-4,7,7-trimethyl-6-oxabicyclo[3.2.1]octane-3,4-diol （Cl0HlsO3）, has been synthesized by using one-step catalytic synthetic method from a-pinene and structurally characterized by means of IR, JH-NMR, J3C-NMR, HRMS and single-crystal X-ray diffraction. The crystal belongs to the monoclinic system, space group P21/n with a = 7.277（4）, b = 18.177（11）, c = 7.939（5） A, β = 91.122（8）°, Z = 4, V = 1049.9（11） A, Dc = 1.178 g/cm3, Mr = 186.24, λ（MoKa） = 0.71073 A, μ = 0.09 mm^-1, F（000） = 408, R = 0.051 and wR = 0.144. The title complex molecules contained two hydroxyls and are connected through hydrogen bonds to generate a two-dimensional network. Especially, the preliminary herbicidal activity results show that the title compound exhibits herbicidal activity against rape （Brassica campestris） and barnyard grass （Echinochloa crusgalli）.

关键词： monoterpene oxabicyclodiol synthesis crystal structure herbicidal activity

Novel Synthesis, Crystal Structure, and Plant-growth Regulation Activity of(1S,4R)-4,7,7-Trimethyl-6-oxabicyclo[3.2.1]octane-1,4-diol

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Chinese Journal of Structural Chemistry 2018年第5期37卷 741-746页

作者：黄道战谢志鹏蓝虹云 College of Chemistry and Chemical Engineering Guangxi University for Nationalities Guangxi Key Laboratory of Chemistry and Engineering of forest products Guangxi University for Nationalities

The title compound,（1S,4R）-4,7,7-trimethyl-6-oxabicyclo [3.2.1] octane-1,4-diol（C（10）H（18）O3）, has been synthesized from terpinolene via one-step catalytic synthetic method and structurally characterized by means of HRMS, IR, 1H-NMR, （13）C-NMR and single-crystal X-ray diffraction. The compound crystallizes in trigonal, space group R-3, with a = 27.892（9）, b = 27.892（9）, c = 6.720（2） A, γ = 120°, Z = 18, V = 4527（3） A3, Dc = 1.230 g/cm3, Mr = 186.24, λ（Mo Kα） = 0.71073？, μ = 0.09 mm（-1）, F（000） = 1836, the final R = 0.051 and wR = 0.161. The title compound molecule contained a 6-oxabicyclo[3.2.1]octane skeleton and two hydroxyl groups, which were connected through intermolecular O–H…O hydrogen bonds to generate a two-dimensional network. Especially, the preliminary bioassay showed that the title compound can promote the root growth and shoot elongation of rape（Brassica campestris） at low concentration（0.62570 mmol·L^-1） and inhibit them at high concentration（〉 70 mmol·L^-1）.

关键词： monoterpene oxybicyclodiol one-step catalytic synthesis crystal structure plant-growth regulation activity terpinolene