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中国化学快报（英文版）
中国化学快报（英文版）

梁晓天

月刊

1001-8417

cclbj@imm.ac.cn

010-63165638

100050

北京市先农坛街1号

中国化学快报（英文版）/Journal Chinese Chemical LettersCSCDCSTPCD北大核心SCI
查看更多>>本刊是由中国科协主管、中国化学会主办、中国医学科学院药物所承办的学术期刊，是由著名化学家梁晓天院士主编。是中国化学界通向世界的窗口，内容覆盖化学全领域。本刊的办刊宗旨是“新、快、准”，我们将坚持这个宗旨，力求及时反映化学研究中各个相关领域内的最新进展及热点问题，主要读者群是科研人员、研究生、大学教师。现已被国内外多家数据库收录，如SCI　Search、Chemical Abstract、Research Alert、Chemistry Citation Index、《日本科技文献速报》、万方数据数字化期刊群、中国学术期刊过刊全文数据库、中国学术期刊（光盘版）、中国学术期刊文摘、中文期刊全文数据库、俄罗斯Рж期刊源等。
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    Eco-friendly regeneration of end-of-life PVDF membrane with triethyl phosphate:Efficiency and mechanism

    Lingna WangChenxin TianRuobin DaiZhiwei Wang...
    315-319页
    查看更多>>摘要：Membrane will inevitably reach the end of its lifespan due to the irrecoverable fouling accumulation in membrane bioreactors(MBRs)during long-term operation.Herein,we developed an eco-friendly mem-brane regeneration strategy with triethyl phosphate(TEP),which successfully prolonged the lifespan of end-of-life(EOL)polyvinylidene fluoride(PVDF)membranes in a large-scale MBR.The regenerated(Rg)membrane exhibited a water permeance of 534.8±45.7L m-2 h-1 bar-1,along with stable rejection rate,which was comparable with that of the new membrane.Furthermore,compared to the membrane sub-jected solely to preliminary cleaning,the Rg membrane presented a more hydrophilic surface due to the combination of preliminary cleaning and solvent-based processing.Besides,the Rg membrane presented less fouling propensity with the critical flux of 15.2L m-2 h-1,significantly higher than that of the EOL membrane(4.0 L m-2 h-1).Importantly,the membrane regeneration strategy was capable of guarantee-ing the effluent quality in MBR systems for treating real municipal wastewater.This study provides an eco-friendly membrane regeneration strategy for effectively removing the irrecoverable foulants,thereby promoting the advancement of sustainable membrane-based wastewater treatment technology.
      原文链接:
    • 万方数据
    • 维普

    Vapor-phase postsynthetic amination of hypercrosslinked polymers for efficient iodine capture

    Pengcheng SuShizheng ChenZhihong YangNingning Zhong...
    320-325页
    查看更多>>摘要：Hypercrosslinked polymers(HCPs)with large surface areas,high intrinsic porosities and low production costs may be available platforms for iodine capture.However,the lack of iodine-philicity binding sites limits their adsorption capacity.Here we use vapor-phase postsynthetic amination strategy to introduce electron-donating amino groups into the prefabricated HCPs for enhancing their iodine capture perfor-mance.Through simple vapor-phase exposure,the halogen-containing HCPs can be grafted by amines through nucleophilic substitution toward chloro groups.Combining with the abundant amino groups and high porosities,the amino-functionalized porous polymers show substantially increased iodine adsorption capacity,about 221％as that of original one,accompanied by excellent recyclability.Mechanism investiga-tions reveal the key roles of the electron-donor amino groups and π-conjugated benzene rings along with structure characteristics of porous polymer frameworks in iodine capture.Moreover,this vapor-phase am-ination strategy shows good generality and can be extended to various amines,e.g.,ethylenediamine,1,3-diaminopropane and diethylenetriamine.Our work proves that this simple vapor-phase postsynthetic functionalization strategy may be applied in other porous polymers with wide application prospects in adsorption,separation and storage.
      原文链接:
    • 万方数据
    • 维普

    Antibacterial performance of cationic quaternary phosphonium-modified chitosan polymer in water

    Jinjie LuQikai LiuYuting ZhangYi Zhou...
    326-330页
    查看更多>>摘要：Microbial contamination in water has emerged as a critical concern and thus developing biocide materi-als for controlling microbial contamination is crucial.Removing all pathogenic bacteria in water is diffi-cult when using traditional water treatment technologies.Moreover,these bacteria can easily reproduce during pipeline distribution.In this work,a facile and effective chitosan derivative biocide denoted as PCC was developed by grafting with quaternary phosphonium salt(QPS).PCC became positively charged with a wide range of pH and demonstrated antibacterial activity up to 95％and 100％against Escherichia coli and Staphylococcus aureus as model pathogens,respectively.The grafting of QPS may disrupt the cell membrane and lead to bacterial inactivation,as demonstrated by the scanning electron microscopy im-age and the concentration of intracellular substance leakage.MTT assay results indicate that PCC achieved good biocompatibility with negligible in vitro cytotoxicity.These findings introduce a promising approach for bacterial decontamination due to its low cytotoxicity and high biocidal activity.
      原文链接:
    • 万方数据
    • 维普

    Degradation of neonicotinoids with different molecular structures in heterogeneous peroxymonosulfate activation system through different oxidation pathways

    Ruonan GuoHeng ZhangChangsheng GuoNingqing Lv...
    331-339页
    查看更多>>摘要：The elimination of neonicotinoids(NEOs)from water has been a research priority due to their threats to human health and ecosystems.In this study,we established the heterogeneous peroxymonosulfate(PMS)activation system using manganese catalyst(Mn NC)and cobalt catalyst(Co NC)to trigger the nonradical oxidation and synergistic oxidation pathway,respectively to remove NEOs.The results showed that the nonradical oxidation system exhibited superior NEOs degradation capability.The composition of organic pollutants in wastewater significantly impacted subsequent degradation processes.The charge distribu-tion and reaction sites of various NEOs were analyzed using density functional theory(DFT)calculations,and it demonstrated the electron distribution and activity of NEOs were significantly influenced by the type and number of substituents.Nitro group(-NO2)and cyanide group(-C≡N)were identified as strong electron-withdrawing groups and prone to be attacked by negatively charged radicals.The transformation of NEOs was analyzed,and result showed that the C and N sites adjacent to the nitro group and cyanide group were more susceptible to oxidation attacks.S and N atoms,which possess strong electronegativity and high electron cloud density,were identified as key active sites in the degradation pathway.The out-comes of this study provide valuable guidance for the oriented regulation of oxidation pathways towards efficient removal of NEOs in water.
      原文链接:
    • 万方数据
    • 维普

    A self-cleaning window for high-efficiency photodegradation of indoor formaldehyde

    Changzhu HuangWei DaiShimao DengYixin Tian...
    340-345页
    查看更多>>摘要：Formaldehyde(HCHO)as an indoor air pollutant released by new furniture and decorative materials is of great concern.Developing a self-cleaning device to remove HCHO is an ideal way to improve indoor air quality.In this study,a self-cleaning window with a multilayered structure constructed from fluorine-doped tin oxide/bismuth tungstate/resorcinol-formaldehyde resin(FTO/Bi2WO6/RF)has been fabricated,which is capable of degrading HCHO in natural indoor condition.The as-fabricated device could utilize the natural room light and promote the generation and transfer of the photocatalytic carriers in Bi2WO6,which subsequently delivers a good catalytic oxygen reduction efficiency in RF to produce hydrogen per-oxide(H2O2).The as-synthesized H2O2 could further split into hydroxyl radicals(·OH),then oxide the HCHO molecules in the air.The present study demonstrates a novel and efficient strategy to fabricate a transparent multifunctional window for self-cleaning indoor gaseous pollutants,the concept is of great importance to be expanded in a broad range of indoor furniture for in-house air pollution control.
      原文链接:
    • 万方数据
    • 维普

    Kinetic study and DFT calculation on the tetracycline abatement by peracetic acid

    Dan-Ying XingXiao-Dan ZhaoChuan-Shu HeBo Lai...
    346-350页
    查看更多>>摘要：Water contamination by tetracycline(TC)has emerged as an environmental concern owing to its widespread use and antibiotic resistance.Application of peracetic acid(PAA)in the water and wastew-ater treatment has recently been proposed and demonstrated to be effective for TC abatement,yet the underlying reaction kinetics between the PAA and TC are not yet clear.To explore the reaction kinetics,the effect of solution pH on TC abatement by PAA is studied and the species-specific rate constants are calculated.The ability to donate and accept electrons for different species of TC and PAA is evaluated via density functional theory(DFT)calculations.The pH-dependent apparent second-order rate constants of TC abatement by PAA exhibits the parabolic shape with the maximum at pH 8.5(9.75 L mol-1 s-1).This phenomenon is closely related to the speciation of TC and PAA,in which the reaction between PAAH and TTC2-possesses the highest species-specific rate constants according to the kinetic simulation.Further DFT calculations suggest that the HOMO of TTCH+,TTC,TTC-,TTC2-and the LUMO of PAAH and PAA-are-6.40,-6.26,-5.10,-4.94 eV and-0.24,0.60 eV,respectively.According to the DFT calculations,de-protonation of TC and PAA leads to an increase of the HOMO value of TC and the LUMO value of PAA.Furthermore,the HOMOTC-LUMOPAA values is in good agreement with the trend of species-specific rate constants,which can be used to evaluate the reactivity between PAA and TC with different species.This study provides the kinetic data and theoretical basis for the reaction of PAA and TC,which is critical for the application of PAA in the treatment of water and wastewater.
      原文链接:
    • 万方数据
    • 维普

    Biochar with self-doped N to activate peroxymonosulfate for bisphenol-A degradation via electron transfer mechanism:The active edge graphitic N site

    Yun-Xin HuangLin-Qian YuKe-Yu ChenHao Wang...
    351-355页
    查看更多>>摘要：Environmental endocrine disruptors,represented by bisphenol A(BPA),have been widely detected in the environment,bringing potential health risks to human beings.Nitrogen-containing biocarbon catalyst can activate peroxymonosulfate(PMS)to degrade BPA in water,but its active sites remain opaque.Herein,in this work,nitrogen-containing biochar,i.e.,C-Nedge,enriched with graphitic-N defects at the edges was prepared by one-pot co-pyrolysis of chitosan and potassium carbonate.The results showed that the C-Nedge/PMS system can effectively degrade 98％of BPA(50 mg/L).The electron transfer based non-radical oxidation mechanism was responsible for BPA degradation.Edge graphitic-N doping endows biochar with strong electron transfer ability.The catalyst had good recovery and reuse performance.This catalytic ox-idation was also feasible for other refractory pollutants removal and worked well for treating practi-cal wastewater.This work may provide valuable information in unraveling the N doping configuration-activity relationship during activating PMS by biochar.
      原文链接:
    • 万方数据
    • 维普

    Covalently bonded ternary photocatalyst comprising MoSe2/black phosphorus nanosheet/graphitic carbon nitride for efficient moxifloxacin degradation

    Yuhao MaYufei ZhouMingchuan YuCheng Fang...
    356-359页
    查看更多>>摘要：Covalently bonded bridging between different semiconductors is a remarkable approach to improve the transfer of charge carriers at interfaces.In this study,we designed a ternary heterojunction(MBG)combining of molybdenum diselenide(MoSe2),black phosphorus nanosheets(Bpn)and graphitic car-bon nitride(GCN).Among this MBG of MoSe2/Bpn/GCN,(i)the covalently bonded bridging effect be-tween Bpn/GCN facilitates directional charge carrier transfer,meanwhile(ii)a Z-scheme heterojunction is formed between MoSe2/GCN to enhance the separation of photogenerated carriers.Furthermore,(iii)this composite exhibits an increased absorption for visible light.Using this MBG,photocatalytic degradation of over 98％of moxifloxacin is achieved within 20 min,with O2·-confirmed as the primary photocatalytic active species.These findings provide novel insights into the construction of efficient heterojunction by covalently bonded bridging.
      原文链接:
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    Single-atom sites regulation by the second-shell doping for efficient electrochemical CO2 reduction

    Qian-Qian TangLi-Fang FengZhi-Peng LiShi-Hao Wu...
    360-363页
    查看更多>>摘要：Nitrogen-doped carbon loaded single-atom catalysts(SACs)are promising candidates for electrocatalytic conversion of CO2 into high-valuable chemicals,and the modification of catalysts by heteroatom-doping strategy is an effective approach to enhance the CO2 reduction performance.However,the large difference exists in atomic radius between nitrogen atoms and the doped heteroatoms may lead to the poor stability of active sites.In this study,we have synthesized a Ni single atom catalyst with S doping at the second-shell on the ultrathin carbon nanosheets support(Ni-N4-SC)by solid-phase pyrolysis.The S atom in the second-shell contributes to the higher efficiency of CO2 conversion at lower potentials while the Ni-N4-SC can be more stable.The experimental results and theoretical calculations indicate that the S atom in second-shell breaks the uniform charge distribution and reduces the free energy of hydrogenation,which can increase the adsorption of CO2,accelerate charge transfer,and reduce the reaction energy barrier.This work reveals the close relationship between the second-shell and the electrocatalytic activity of single atom sites,which also provides a new perspective to design efficient single atom catalysts.
      原文链接:
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    Single-atom Pd anchored in the porphyrin-center of ultrathin 2D-MOFs as the active center to enhance photocatalytic hydrogen-evolution and NO-removal

    Xingyan LiuChaogang JiaGuangmei JiangChenghua Zhang...
    364-368页
    查看更多>>摘要：Single-atom catalysts were widely used to treat atmospheric pollution and alleviate energy crises through photocatalysis.However,how to prevent the aggregation of single atoms during the preparation and cat-alytic processes remained a great challenge.Herein,a novel ultrathin two-dimensional porphyrin-based single-atom photocatalyst Ti-MOF(abbreviated as TMPd)obtained through a simple hydrothermal syn-thesis strategy was used for photocatalytic hydrogen evolution and NO removal,in which the single-atom Pd tightly anchored in the center of porphyrin to ensure single-atom Pd stable existence.Com-pared with most reported MOFs-based photocatalysts,the TMPd showed an excellent hydrogen evolution rate(1.32 mmol g-1 h-1)and the NO removal efficiency(62％)under visible light irradiation.Aberration-corrected high-angle annular dark-field scanning transmission electron microscope(HAADF-STEM)and synchrotron-radiation-based X-ray absorption fine-structure spectroscopy(XAFS)proved that pd in TMPd existed in an isolated state,and the atomic force microscope(AFM)proved the ultrathin morphology of TMPd.DFT calculations had demonstrated that single-atom Pd could serve as the active center and more effectively achieve electron transfer,indicating that single-atom Pd played a vital role in photocatalytic hydrogen evolution.In addition,a possible photocatalytic pathway of NO removal was proposed based on ESR and in-situ infrared spectra,in which the catalysts anchored with single-atom Pd could produce more active substances and more effectively oxidize NO to NO2-or NO3-.The results suggested that coordi-nating single-atom metal species as the active site in the center of porphyrin could be a feasible strategy to obtain various ultrathin porphyrin-based single-atom photocatalysts to acquire excellent photocatalytic performance further.
      原文链接:
    • 万方数据
    • 维普