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Emerging trends in the selective production of value-added aromatics

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Science China chemistry 2025年第1期68卷 15-20页

作者： Yuchao Wu Houliang Dai Weisheng Yang Yaxing Li Lichen Liu Petrochemical research Institute Company Limited China National Petroleum CorporationBeijing 102206China Engineering research center of Advanced Rare Earth Materials Department of ChemistryTsinghua UniversityBeijing 100084China

1 Introduction Aromatics(mainly benzene,toluene,and xylenes,BTX)are essential intermediates in the chemical *** are employed in the synthesis of a broad spectrum of chemicals and materials,e.g.,various polymers,plastics,resins,solvents,dyes,pharmaceuticals^([1]).The manufacturing pathway of BTX mainly includes petroleum reforming of naphtha,coal-to-aromatics,methanol-to-aromatics^([2]).

关键词： reforming methanol resins

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Revealing the difference of Stark tuning rate between interface and bulk by surface-enhanced infrared absorption spectroscopy

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Chinese Chemical Letters 2025年第2期36卷 461-464页

作者： Manyu Zhu Fei Liang Lie Wu Zihao Li Chen Wang Shule Liu Xiue Jiang State Key Laboratory of Electroanalytical chemistry Changchun Institute of Applied ChemistryChinese Academy of Sciences School of Applied chemistry and Engineering University of Science and Technology of China School of Materials Science and Engineering Sun Yat-sen University research center for Analytical Science College of ChemistryNankai University

Revealing the factors that affect the vibrational frequency of Stark probe at interface is a pre-requirement for evaluating the absolute interfacial electric *** using surface-enhanced infrared absorption(SEIRA) spectroscopy,attenuated total reflection (ATR) spectroscopy and molecular dynamics (MD),we reveal the assembled C≡N at gold nanofilm exhibits a reduced Stark tuning rate (STR) referring to the vibrational frequency shift in response to electric field comparing with the bulk which was regulated by the electron transfer between S and *** findings lead to a deeper understanding of the vibrational Stark effect at the interface and provide guidance for improving the interface electric field theory.

关键词： Attenuated total reflection spectroscopy Cyano group Stark tuning rate Surface-enhanced infrared spectroscopy Vibrational stark effect

Facile and gram-scale synthesis of single-crystal hydrogen-bonded organic frameworks as iodine adsorbents for synthesis of β-iodoethers

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Science China chemistry 2025年

作者： Zhiye Zheng Qiuyuan Lin Shunfeng Peng Yuxuan Zhang Shuting Xu Hui Zhang Hongyu Wang Department of chemistry College of Science Center for Supramolecular Chemistry & Catalysis Shanghai University Laboratory for Microstructures Instrumental Analysis and Research Center Shanghai University

The facile synthesis of single-crystal hydrogen-bonded organic frameworks（HOFs） on a gram scale remains a significant challenge but is crucial for practical applications. Herein, we report a novel strategy to prepare two three-dimensional（3D）single-crystal HOFs at ambient temperature and pressure with gram-scale products. The imine-linked oligomers were synthesized using ionic liquids as catalysts, which self-assembled in situ to form large single crystals. The optimal material, H1,exhibited iodine uptake capacities of 6.02 and 4.44 g g-1from vapor and aqueous solutions, respectively, ranking among the highest reported HOFs. For the first time, the iodine-adsorbed H1 was used as an iodine source for synthesizing β-iodoethers,achieving excellent yields comparable to those obtained using iodine as the reactant. This study not only presents a simple method for the scalable synthesis of single-crystal HOFs but also explores a potential application of iodine-adsorbed materials in organic synthesis.

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Modification of polypropylene separator with multifunctional layers to achieve highly stable sodium metal anode

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Journal of Energy chemistry 2025年第2期101卷 223-232页

作者： Aadil Nabi Chishti Sikandar Iqbal Muhammad Ali Moazzam Ali Samia Aman Hamid Hussain Muhammad Yousaf Yinzhu Jiang Future Science research Institute ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang University School of Materials Science and Engineering Zhejiang University School of chemistry Zhejiang University

Separator modification is an effective approach to suppress dendrite growth to realize high-energy sodium metal batteries（SMBs） in practical applications,however,its success is mainly subject to surface ***,a separator with multifunctional layers composed of N-doped mesoporous hollow carbon spheres（HCS） as the inner layer and sodium fluoride（NaF） as the outer layer on commercial polypropylene separator（PP） is proposed（PP@HCS-NaF） to achieve stable cycling in *** the molecular level,the inner HCS layer with a high content of pyrrolic-N induces the uniform Na+flux as a potential Na+redistributor for homogenous deposition,whereas its hollow mesoporous structure offers nanoporous buffers and ion channels to regulate Na+ion distribution and uniform *** outer layer（NaF） constructs the NaF-enriched robust solid electrolyte interphase layer,significantly lowering the Na+ions diffusion *** from these merits,higher electrochemical performances are achieved with multifunctional double-layered PP@HCS-NaF separators compared with single-layered separators（***@HCS or PP@NaF） in *** Na‖Cu half-cell with PP@HCS-NaF offers stable cycling（280 cycles）with a high CE（99.6%）,and Na‖Na symmetric cells demonstrate extended lifespans for over 6000 h at 1 mA cm-2with a progressively stable overpotential of 9 ***,in Na‖NVP full-cells,the PP@HCS-NaF separator grants a stable capacity of ～81 mA h g-1after 3500 cycles at 1 C and an impressive rate capability performance(～70 mA h g-1at 15 C).

关键词： Enhanced cyclic stability Multifunctional layers NaF-enriched SEI layer Separator modification Sodium metal batteries

Oscillatory flow reactor facilitates fast photochemical Wolff rearrangement toward synthesis of α-substituted amides in flow

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Chinese Chemical Letters 2025年第2期36卷 389-393页

作者： Huashan Huang Jingze Chen Luyun Zhang Hong Yan Siqi Li Fen-Er Chen Institute of Pharmaceutical Science and Technology College of Chemistry Fuzhou University Key Laboratory of Natural Medicines of the Changbai Mountain Ministry of Education Molecular Medicine Research Center College of Pharmacy Yanbian University Engineering center of Catalysis and Synthesis for Chiral Molecules Department of Chemistry Fudan University Shanghai Engineering center of Industrial Catalysis for Chiral Drugs

A visible light-promoted fast photochemical Wolff rearrangement was developed toward synthesis of α-substituted amides in continuous flow with the use of a photochemical oscillatory flow reactor(POFR).The control experiment indicates that a fast process of the Wolff rearrangement(<40 s) is involved. Notably, this protocol does not require excess use of any reactants, and the resulting α-substituted amides could be isolated by recrystallization in good to excellent yields.

关键词： Flow photochemistry Ketene Oscillatory flow reactor Wolff rearrangement α-Substituted amides

Mechanistic insight on nanomaterial-induced reactive oxygen species formation

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Journal of Environmental Sciences 2025年第5期151卷 200-210页

作者： Jianzhong Cao Qingchun Wu Xuting Liu Xiangyu Zhu Chunfeng Huang Xinyu Wang Yang Song State Key Laboratory of Environmental chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

Reactive oxygen species(ROS)are closely related to cell death,proliferation and ***,excessive ROS levels may exceed the cellular oxidative capacity and cause irreversible *** are often inadvertently exposed to nanomaterials(NMs).Therefore,elucidating the specific routes of ROS generation induced by NMs is crucial for comprehending the toxicity mechanisms of NMs and regulating their potential *** paper provides a comprehensive review of the toxicity mechanisms and applications of NMs from three perspectives:(1)Organelle *** the impact of NMmediated ROS onmitochondria,unravelingmechanisms at the organelle level.(2)NMs’*** the broad applications and biosafety considerations of Nanozymes,a unique class of NMs.(3)Cellular *** the toxic effects and mechanisms of NMs in cells at a holistic cellular *** on these perspectives,the paper scrutinizes the regulation of Fenton reactions by NMs in ***,it introduces diseases resulting fromNM-mediated ROS at the organism *** comprehensive review aims to provide valuable insights for studying NM-mediated mechanisms at both cellular and organism levels,offering considerations for the safe design of nanomaterials.

关键词： Nanomaterials Reactive oxygen species(ROS) Toxicity Mitochondria Oxidative stress

Energy transfer enhanced photocatalytic hydrogen evolution in organic heterostructure nanoparticles via flash nanoprecipitation processing

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Green Energy & Environment 2025年第2期10卷 390-398页

作者： Miaojie Yu Weiwei Zhang Xueyan Liu Guohui Zhao Jun Du Yongzhen Wu Wei-Hong Zhu Key Laboratory for Advanced Materials and Institute of Fine Chemicals Joint International Research Laboratory of Precision Chemistry and Molecular EngineeringFeringa Nobel Prize Scientist Joint Research CenterFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237China State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning116023China

Organic nanophotocatalysts are promising candidates for solar fuels production,but they still face the challenge of unfavorable geminate recombination due to the limited exciton diffusion ***,we introduce a binary nanophotocatalyst fabricated by blending two polymers,PS-PEG5(PS)and PBT-PEG5(PBT),with matched absorption and emission spectra,enabling a F€orster resonance energy transfer(FRET)process for enhanced *** heterostructure nanophotocatalysts are processed using a facile and scalable flash nanoprecipitation(FNP)technique with precious kinetic control over binary nanoparticle *** resulting nanoparticles exhibit an exceptional photocatalytic hydrogen evolution rate up to 65 mmol g^(-1) h^(-1),2.5 times higher than that single component *** through fluorescence spectra and transient absorption spectra confirm the hetero-energy transfer within the binary nanoparticles,which prolongs the excited-state lifetime and extends the namely“effective exciton diffusion length”.Our finding opens new avenues for designing efficient organic photocatalysts by improving exciton migration.

关键词： Polymer photocatalysts Nanoparticles Hydrogen evolution F€orster resonance energy transfer

Immobilization of laccase on magnetic PEGDA-CS inverse opal hydrogel for enhancement of bisphenol A degradation in aqueous solution

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Journal of Environmental Sciences 2025年第1期147卷 74-82页

作者： Mei Du Jingzhang Liu Qiong Wang Fengbang Wang Lei Bi Chunyan Ma Maoyong Song Guibin Jiang Key Laboratory of Environmental Nanotechnology and Health Effects Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China State Key Laboratory of Environmental chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of ScienceBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

Endocrine disruptors such as bisphenol A(BPA)adversely affect the environment and human *** are used for the efficient biodegradation of various persistent organic pollutants in an environmentally safe ***,the direct application of free laccases is generally hindered by short enzyme lifetimes,non-reusability,and the high cost of a single *** this study,laccases were immobilized on a novel magnetic threedimensional poly(ethylene glycol)diacrylate(PEGDA)-chitosan(CS)inverse opal hydrogel(LAC@MPEGDA@CS@IOH).The immobilized laccase showed significant improvement in the BPA degradation performance and superior storage stability compared with the free laccase.91.1%of 100 mg/L BPA was removed by the LAC@MPEGDA@CS@IOH in 3 hr,whereas only 50.6%of BPA was removed by the same amount of the free *** with the laccase,the outstanding BPA degradation efficiency of the LAC@MPEGDA@CS@IOH was maintained over a wider range of pH values and ***,its relative activity of was maintained at 70.4%after 10 cycles,and the system performed well in actual water *** efficientmethod for preparing immobilized laccases is simple and green,and it can be used to further develop ecofriendly biocatalysts to remove organic pollutants from wastewater.

关键词： Bisphenol A removal Laccase immobilization Chitosan Inverse opal hydrogel

Nanoplastics and nano-ZnO facilitate Cd accumulation in zebrafish larvae via a distinct pathway: Revelation by LA-ICP-MS imaging

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Chinese Chemical Letters 2025年第2期36卷 436-440页

作者： Pengyu Chen Beibei Chen Man He Yuxi Zhou Lei Lei Jian Han Bingsheng Zhou Ligang Hu Bin Hu Department of chemistry Wuhan University State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences State Key Laboratory of Environmental chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences

The interaction between nanoparticles （NPs） and pollutants affects their bioavailability and ***,the processes by which NPs and pollutants change in vivo have rarely been ***,using laser ablation-inductively coupled plasma-mass spectrometry （LA-ICP–MS）,we found that both nanoplastics and ZnO NPs caused more Cd to accumulate in zebrafish larvae,but with distinct *** could adsorb Cd2+and transfer it into the larvae through the“Trojan horse”*** coexposure of nanoplastics and Cd2+caused Cd to accumulate in the abdomen where the nanoplastics were located without dissociation,showing a lower toxic effect than Cd2+exposure *** NPs weakly adsorbed Cd2+,but they increased the Zn and Cd contents in larvae by enhancing the expression of metal *** coexposure of ZnO and Cd2+evenly distributed Cd in the larvae,revealing a more severe toxic effect than Cd2+exposure *** results demonstrated the changing bioavailability and toxicity of Cd induced by different *** also shows the vital role LA-ICP-MS plays in revealing the relationship between toxicity and *** addition,the long-term effect of bioavailability on heavy metal toxicity and nanosafety deserves further investigation.

关键词： Cadmium Combined effect LA-ICP-MS Nanoplastics Zebrafish larvae ZnO nanoparticles