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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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    Hydrothermally stable metal oxide-zeolite composite catalysts for low-temperature NOx reduction with improved N2 selectivity

    Lijun YanShiqi ChenPenglu WangXiangyu Liu...
    515-523页
    查看更多>>摘要：Development of hydrothermally stable,low-temperature catalysts for controlling nitrogen oxides emis-sions from mobile sources remains an urgent challenge.We have prepared a metal oxide-zeolite compos-ite catalyst by depositing Mn active species on a mixture support of CeO2/Al2O3 and ZSM-5.This compos-ite catalyst is hydrothermally stable and shows improved low-temperature SCR activity and significantly reduced N2O formation than the corresponding metal oxide catalyst.Comparing with a Cu-CHA catalyst,the composite catalyst has a faster response to NH3 injection and less NH3 slip.Our characterization re-sults reveal that such an oxide-zeolite composite catalyst contains more acidic sites and Mn3+species as a result of oxide-zeolite interaction,and this interaction leads to the generation of more NH4+species bound to the Brønsted acid sites and more reactive NOx species absorbed on the Mn sites.Herein,we report our mechanistic understanding of the oxide-zeolite composite catalyst and its molecular pathway for improving the low-temperature activity and N2 selectivity for NH3-SCR reaction.Practically,this work may provide an alternative methodology for low-temperature NOx control from diesel vehicles.
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    Selective removal of Cr(Ⅵ)using polyvinylpyrrolidone and polyacrylamide co-modified MoS2 composites by adsorption combined with reduction

    Shuqi YuYu YangKeisuke KurodaJian Pu...
    524-530页
    查看更多>>摘要：Cr(Ⅵ),one of the most hazardous metal pollutants,poses significant threats to the environment and hu-man health.Herein,a novel MoS2 composite(MoS2/PVP/PAM)modified by polyvinylpyrrolidone(PVP)and polyacrylamide(PAM)was synthesized to enhance the removal of Cr(Ⅵ).Characterization analysis including SEM,XRD,FTIR,and XPS indicated that PVP and PAM could increase the interlayer spacing and the dispersibility of MoS2,and introduce pyrrolic N and amino functional groups.The batch exper-iments showed that MoS2/PVP/PAM represented excellent Cr(Ⅵ)removal performance over a wide pH range,and exhibited a significantly higher maximum Cr(Ⅵ)adsorption capacity(274.73 mg/g,at pH 3.0,and 298K)than pure MoS2.The adsorption of Cr(Ⅵ)followed Langmuir and pseudo-second-order kinetic model,which was a homogeneous monolayer chemisorption process.MoS2/PVP/PAM showed stable re-moval of Cr(Ⅵ)in the presence of humic acid(HA),interfering cations and anions at different concentra-tions.Moreover,it had excellent selectivity for Cr(Ⅵ)(Kd value of 1.69 × 107 mL/g)when coexisting with a variety of competing ions.Multiple characterization revealed that Cr(Ⅵ)was reduced to low toxicity Cr(Ⅲ)by Mo4+and S2-,and then chelated on the surface of the adsorbent by pyrrolic N.This research expanded the design concept for MoS2 composites by demonstrating the potential of MoS2/PVP/PAM as a promising material for selective elimination of Cr(Ⅵ)in water.
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    Octopus-like DNA nanostructure coupled with graphene oxide enhanced fluorescence anisotropy for hepatitis B virus DNA detection

    Jia-Li XieTian-Jin XieYu-Jie LuoKai Mao...
    531-535页
    查看更多>>摘要：Fluorescence Anisotropy(FA)is an effective biochemical detection method based on molecular rotations.Graphene oxide(GO)has been extensively used as an FA amplifier.However,the enhancement of FA by GO alone is limited and the strong scattering of GO will easily make the measurement of FA inaccurate.In order to address these problems,an octopus-like DNA nanostructure(ODN)was designed and coupled with GO to enhance the FA together in this work.By mimicking the multi-clawed structure of the oc-topus,the ODN can be adsorbed on GO tightly,which not only could improve the sensitivity because of the double FA enhancement abilities of GO and ODN,but also could improve the specificity due to the decrease of the nonspecific interaction in complex samples.Furthermore,ODN could maintain a certain distance between the fluorophore and GO to reduce the fluorescence quenching efficiency of GO,which could improve the accuracy.This method has been applied for the detection of hepatitis B virus DNA(HBV-DNA)in a range of 1-50nmol/L and the limit of detection(LOD)was 330pmol/L.In addition,the proposed method has been successfully utilized to detect HBV-DNA in human serum,indicating that this method has a great practical application prospect.
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    Au-Fe3O4 dumbbell-like nanoparticles based lateral flow immunoassay for colorimetric and photothermal dual-mode detection of SARS-CoV-2 spike protein

    Gengchen GuoTianyu ZhaoRuichang SunMingzhe Song...
    536-540页
    查看更多>>摘要：Lateral flow immunoassay(LFIA)has become popular in laboratories,at-home testing,and medical diag-nostics due to its minimal cost and user-friendliness.Nevertheless,conventional test strips based on col-loidal gold can only obtain qualitative or semi-quantitative results with low sensitivity.In this work,Au-Fe3O4 dumbbell-like nanoparticles were synthesized and used as the LFIA labelling marker for highly sen-sitive colorimetric-photothermal dual-mode detection of SARS-CoV-2 spike(S)protein.The unique dumb-bell structure of Au-Fe3O4 NPs makes it possible to combine the best features of both Au NPs and Fe3O4 NPs.The increased surface area of these NPs enhances their LSPR effect and photothermal effect,which achieves signal amplification to increase sensitivity.The Au-Fe3O4 NPs modified with S protein antibody could identify S protein in samples,which were recognized and accumulated on T-line by another an-tibody,generating color band for qualitative colorimetric detection.The T-line was irradiated by laser to obtain temperature change for quantitative detection of photothermal.In optimized conditions,the detec-tion limit was 1.22 pg/mL,three orders of magnitude more sensitive than colorimetric detection.Finally,the approach was performed on SARS-CoV-2 pseudovirus samples and outperformed traditional colloidal gold strips.This LFIA platform exhibits significant promise for practical implementation,as it can satisfy the need for low-cost,high-sensitivity,and home-based quantitative detection for respiratory infectious diseases.
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    Novel P-doping-tuned Pd nanoflowers/S,N-GQDs photo-electrocatalyst for high-efficient ethylene glycol oxidation

    Xiaoxiao HuangZhi-Long HeYangpeng ChenLei Li...
    541-545页
    查看更多>>摘要：Traditional photo-electcatalyst structures of small noble metal nanoparticles assembling into large-scale photoactive semiconductors still suffer from agglomeration of noble metal nanoparticles,insufficient charge transfer,undesirable photoresponse ability that restricted the photo-electrocatalytic performance.To this end,a novel design strategy is proposed in this work,namely integrating small-scale photoac-tive materials(doped graphene quantum dots,S,N-GQDs)with large-sized noble metal(PdP)nanoflow-ers to form novel photo-electrocatalysts for high-efficient alcohol oxidation reaction.As expected,supe-rior electrocatalytic performance of PdP/S,N-GQDs for ethylene glycol oxidation is acquired,thanks to the nanoflower structure with larger specific surface area and abundant active sites.Furthermore,nonmetal P are demonstrated,especially optimizing the adsorption strength,enhancing the interfacial contact,reduc-ing metal agglomeration,ensuring uniform and efficient doping of S,N-GQDs,and ultimately significantly boost the catalytic activity of photo-electrocatalysts.
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