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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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    Synthesis of an AVB@ZnTi-LDH composite with synergistically enhance UV blocking activity and high stability for potential application in sunscreen formulations

    Xiaomeng HuJie YuLijie SunLinfeng Zhang...
    559-564页
    查看更多>>摘要：1-(4-(1,1-Dimethylethyl)phenyl)-3-(4-methoxyphenyl)-1,3-propanedione(known as Avobenzone/AVB),widely used throughout the world as a highly effective UVA absorber,can prevent the progression of photoaging in skin,and is also known for the disadvantage of having a reduced capability to absorb UVA when exposed to sunlight for long periods.To address this challenge,ZnTi-CO3-LDH with a two-dimensional layered structure was used to improve stability and synergistically enhance UV absorption of AVB.A novel AVB loaded ZnTi-CO3-LDH(AVB@ZnTi-LDH)material was synthesized by reconstruction method and the loading content(LC)was about 46.8％investigated by high-performance liquid chro-matography(HPLC).A possible mechanism for the binding of AVB with the ZnTi-LDH surface was pro-posed.X-ray photoelectron spectroscopy(XPS)and density functional theory(DFT)calculations were used to confirm further the coordination between Zn on the layer and the oxygen atom of the carbonyl group of AVB.UV absorption and critical wavelength of AVB@ZnTi-LDH were superior to those of AVB and ZnTi-LDH precursors.Compared with pure AVB,the photodegradation rate was reduced from 15.06％to 4.06％.Especially in titanium dioxide,the decomposition rate was reduced from 29.75％to 7.92％.Furthermore,pure AVB often reacts with multivalent metal ions to induce an unpleasant color(light yellow to reddish brown),which is greatly mitigated with AVB@ZnTi-LDH.In this study,avobenzone was combined with hydrotalcite to prepare an organic-inorganic composite with excellent UV resistance and better stability,the composite has great promise for application in sunscreen cosmetics.
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    Potassium doping for grain boundary passivation and defect suppression enables highly-efficient kesterite solar cells

    Yingfen LiZhiqi WangYunhai ZhaoDajun Luo...
    565-570页
    查看更多>>摘要：The complicated and diverse deep defects,voids,and grain boundary in the CZTSSe absorber are the main reasons for carrier recombination and efficiency degradation.The further improvement of the open-circuit voltage and fill factor so as to increase the efficiency of CZTSSe device is urgent.In this work,we obtained K-doped CZTSSe absorber by a simple solution method.The medium-sized K atoms,which combine the advantages of light and heavy alkali metals,are able to enter the grain interior as well as segregate at grain boundary.The K-Se liquid phase can improve the absorber crystallinity.We find that the accumula-tion of the wide bandgap compound K2Sn2S5 at grain boundary can increase the contact potential differ-ence of grain boundary,form more effective hole barriers,and enhance the charge separation ability.At the same time,K doping passivates the interface as well as bulk defects and suppresses the non-radiative recombination.The improved crystallinity,enhanced charge transport capability and reduced defect den-sity due to K doping result in a significant enhancement of the carrier lifetime,leading to 13.04％device efficiency.This study provides a new idea for simultaneous realization of grain boundary passivation and defect suppression in inorganic kesterite solar cells.
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    Efficient tunable visible and near-infrared emission in Sb3+/Sm3+-codoped Cs2NaLuCl6 for near-infrared light-emitting diode,triple-mode fluorescence anti-counterfeiting and information encryption

    Hui PengXiao WangWeiguo HuangShuiyue Yu...
    571-576页
    查看更多>>摘要：Rare earth ions(RE3+)-doped double perovskites have attracted tremendous attention for its fascinat-ing optical properties.Nevertheless,RE3+generally exhibits poor photoluminescence quantum yield(PLQY)for their parity-forbidden 4f-4f transition and the low doping concentration.Herein,we reported Sb3+/Sm3+-codoped rare earth-based double perovskite Cs2NaLuCl6 that enables efficient visible and near-infrared(NIR)emission,which stems from self-trapped exciton(STE)and Sm3+,respectively.Benefit from up to 72.89％energy transfer efficiency from STE to Sm3+and high doping concentrations due to similar ionic activity between Sm3+and Lu3+,thus eruptive PLQY of 74.58％in the visible light region and 23.12％in the NIR light region can be obtained.Moreover,Sb3+/Sm3+-codoped Cs2NaLuCl6 exhibits tunable emis-sion characteristic in the visible light region under different excitation wavelengths,which can change from blue emission(254 nm excitation)to white emission(365 nm excitation).More particularly,only the NIR emission can be captured by the NIR camera when a 700 nm cutoff filter is added.The excel-lent stability and unique optical properties of Sb3+/Sm3+-codoped Cs2NaLuCl6 enable us to demonstrate its applications in NIR light-emitting diode,triple-mode fluorescence anti-counterfeiting and information encryption.These findings provide new inspiration for the application of rare earth-based double per-ovskite in optoelectronic devices.
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    Complex shell Fe-ZnO derived from ZIF-8 as high-quality acetone MEMS sensor

    Bing ShenTongwei YuanWenshuang ZhangYang Chen...
    577-581页
    查看更多>>摘要：Zeolitic imidazolate frameworks(ZIFs)are a series of materials composited by metal ions and organic ligands with high specific surface area,which might be great precursors to produce metal oxides by cal-cination for gas sensor application.However,Zn-ZIF(ZIF-8)is hard to transform as ZnO in air and keeping the unique framework simultaneously.In this work,Fe2+was introduced into the metal node to replace a part of Zn2+ions,and it could be oxidized as Fe3+in the calcination to facilitate the oxidation process of the 2-methylimdazole ligands to give Fe-ZnO complex shell with high specific surface area(108m2/g)and abundant oxygen vacancies(48％).The micro electro mechanical systems(MEMS)sensor based on the 6％-Fe-ZnO complex shell performed outstanding gas sensing properties to the low-concentration acetone vapor,including high response(ΔR/Rg=11.2 to 5 ppm acetone),superior selectivity(Sacetone/Sethanol=5.6)and fast response speed(rres=2.6s).This work not only provided the research of an exceptional ace-tone MEMS sensor,but also induced a strategy to produce metal oxide derived from ZIFs with complex structures for the universal synthesis methodology.
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    Cs2CuBr4 perovskite quantum dots confined in mesoporous CuO framework as a p-n type S-scheme heterojunction for efficient CO2 photoconversion

    Zhijie ZhangXun LiHuiling TangJunhao Wu...
    582-587页
    查看更多>>摘要：Heterojunction engineering is recognized as a promising strategy to modulate the photocatalytic prop-erties of semiconductors.Herein,lead-free Cs2CuBr4 perovskite quantum dots(PQDs)were confined in a mesoporous CuO framework and a p-n type S-scheme heterojunction of Cs2CuBr4/CuO(CCB/CuO)photocatalyst was fabricated.Experimental characterizations confirmed the effective confinement of the Cs2CuBr4 PQDs in the mesoporous CuO framework,which enabled intimate contact in the interface of CCB/CuO heterojunction,thus facilitating the interfacial charge migration and separation between p-type CuO and n-type Cs2CuBr4.Owing to the outstanding charge transport property and CO2 adsorption capac-ity,the developed CCB/CuO heterojunction exhibited remarkably enhanced photocatalytic CO2 conversion efficiency with an electron consumption rate(Relectron)of 281.1 μmol g-1 h-1,which was approximately 2.8 times higher than that of pristine Cs2CuBr4.These findings provide some insights into the rational engineering design of lead-free perovskite-based heterostructures for efficient photocatalytic CO2 conver-sion.
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    A p-d block synergistic effect enables robust electrocatalytic oxygen evolution

    Xue ZhaoRui ZhaoQian LiuHenghui Chen...
    588-592页
    查看更多>>摘要：Oxygen evolution reaction(OER),occurring at the anode of electrochemical water splitting requires a comprehensive understanding of oxygen electrocatalysis mechanism to optimize its efficiency.Atomically dispersed transition metal supported by nitrogen-doped carbon is featured with excellent catalytic per-formance.Herein,we report a Mg/Co bimetal site which utilizes Mg 3p electrons with strong binding of*OH(the first key reaction intermediates in the free energy diagram)to trigger the OER reaction and Co 3d itinerant character to regulate the binding strength of*O.Benefiting from the fine-tuned adsorp-tion/desorption possesses,the optimized catalyst delivers superior OER activity with low overpotential,i.e.,310 mV at a current density of 10mA/cm2 and 455 mV at 100mA/cm2.Moreover,the current density is able to be maintained at 10mA/cm2 for 10h,consistent with the theoretical simulations for oxidiza-tion process,which demonstrates stable configurations after multiple*OH modification,revealing robust applicability in alkaline medium.
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