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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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    Photocaged activity-based probes for improved monitoring of protein S-sulfenylation in living cells

    Jiahao ZhangHaiyue PengZi'an ChenGuorui Li...
    451-454页
    查看更多>>摘要：Protein S-sulfenylation(protein sulfenic acid),as one of the most significant oxidative post-translational modifications(OxiPTMs),plays a vital role in regulating protein function.A variety of activity-based probes have been developed to profile sulfenic acid in living cells.However,due to the transient pres-ence and low content of sulfenic acid in living cell,high doses of probes are needed to achieve efficient labeling.More importantly,current probes have no temporal control over sulfenic acid labeling.To over-come these limitations,two caged cysteine sulfenic acid probes DYn-2-ONB and DYn-2-Cou with either an o-nitrobenzyl or coumarin protecting group were developed in this study.Both probes can be effi-ciently uncaged via irradiation to produce the active C-nucleophile probe DYn-2.Labeling assay in living cells demonstrated DYn-2-ONB exhibited better labeling capacity compared with DYn-2,providing it as a powerful tool for improved monitoring of protein S-sulfenylation in living cells.
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    Cu single atoms embedded on hollow g-C3N4 nanospheres with enhanced charge transfer and separation for efficient photocatalysis

    Linlin ZhangJianjun LiaoYakun LiWei Sun...
    455-459页
    查看更多>>摘要：Establishing an effective charge transfer mechanism in carbon nitride(g-C3N4)to enhance its photocat-alytic activity remains a limiting nuisance.Herein,the combination design of a single Cu atom with hol-low g-C3N4 nanospheres(Cu-N3 structure)has been proven to offer significant opportunities for this cru-cial challenge.Moreover,this structure endows two pathways for charge transfer in the reaction,namely,the N atoms in the three-dimensional planar structure are only bonded with a single Cu atom,and charge transfer occurs between the plane and the layered structure due to the bending of the interlayered g-C3N4 hollow nanospheres.Notably,Cu-N3 and hollow nanosphere structures have been certified to greatly en-hance the efficiency of photogenerated carrier separation and transfer between the layers and planes by ultrafast spectral analysis.As a result,this catalyst possesses unparalleled photocatalytic efficiency.Specifically,the hydrogen production rate up to 2040 μmol h-1 g-1,which is 51 times that of pure C3N4 under visible light conditions.The photocatalytic degradation performance of tetracycline and oxidation performance of benzene is also expressed,with a degradation rate of 100％,a conversion of 97.3％and a selectivity of 99.9％.This work focuses on the structure-activity relationship to provide the possibilities for the development of potential photocatalytic materials.
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    Ratiometric fluorescence probe for accurate detection of Concanavalin A by coupling fluorescent microsphere with boric acid functionalized carbon dots

    Mingyue XieJuan ChenYufei WangBojun Liu...
    460-463页
    查看更多>>摘要：Accurate and sensitive strategies for Concanavalin A(Con A)sensing are conducive to the better cognition of various important biological and physiological processes.Here,by designing dextran-functionalized fluorescent microspheres(DxFMs)and boric acid-modified carbon dots(BCDs)as recognition unit and built-in signal reference respectively,a ratiometric fluorescent detection platform was proposed for Con A detection with high reliability.In this protocol,the BCDs/DxFMs precipitation was formed due to the covalent interactions between cis-diol of DxFMs and boronic acid groups of BCDs,thus only fluores-cence of BCDs could be detected in the supernatant.When Con A was presented,it could bind to DxFMs through its carbohydrate recognition ability and suppress the subsequent assembly between DxFMs and BCDs,leading to the simultaneous capture of DxFMs and BCDs fluorescence in the supernatant.Since the BCDs content was superfluous,their fluorescence intensities were basically constant in all cases.Based on the unchanged BCDs fluorescence signal and target-dependent DxFMs fluorescence signal in supernatant,the ratiometric detection of Con A was realized.Under optimized conditions,this ratiometric fluores-cent platform displayed a linear detection range from 0.125 μg/mL to 12.5μg/mL with a detection limit of 0.089 μg/mL.Moreover,satisfied analytical outcomes for Con A detection in serum samples were obtained,manifesting huge application potential of this ratiometric fluorescent platform in clinical diagnosis.
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    Interactions of phenol and benzaldehyde in electrocatalytic upgrading process

    Lan LiangChuanbin WangXukai LuYunan Sun...
    464-468页
    查看更多>>摘要：Biomass pyrolysis oil can be improved effectively by electrocatalytic hydrogenation(ECH).However,the unclear interactions among different components lead to low bio-oil upgrading efficiency in the conver-sion process.Herein,benzaldehyde and phenol,as common compounds in bio-oil,were chosen as model compounds.The interactions between the two components were explored in the ECH process by combin-ing experiments and theoretical calculations.Results showed that phenol could accelerate the conversion of benzaldehyde in the ECH.The selectivity of benzyl alcohol was increased from 60.9％of unadded phe-nol to 99.1％with 30mmol/L phenol concentration at 5h.Benzaldehyde inhibited the ECH of phenol.In the presence of benzaldehyde,the conversion rate of phenol was below 10.0％with no cyclohexanone and cyclohexanol formation at 5 h.The density functional theory(DFT)calculations revealed that the phenol could promote the adsorption of benzaldehyde and facilitate the targeted conversion of benzaldehyde on the active site by lowering the reaction energy barrier.The research on the interaction between phenol and benzaldehyde in the ECH provides a theoretical basis for the application of ECH in practical bio-oil upgrading.
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    Plasmon Bi in-situ anchored on BiOCl nanosheets assembled microspheres towards optimized photothermal-photocatalytic performance

    Dongxue SongMingxia LiFan YangMenghan Yu...
    469-476页
    查看更多>>摘要：Interface engineering is of great importance to improve the photocatalytic performance.Herein,in-situ formation plasmon Bi/BiOCl nanosheets assembled heterojunction microspheres are fabricated via facile reductive solvothermal approach.The aldehyde group in the DMF structure is used to exert the weak reducing property of the solvent and thus strip out the metal Bi in BiOCl.The metal Bi is anchored on surface of BiOCl firmly due to in-situ formation engineered interface,which could realize efficient charge transfer channel.The resultant Bi/BiOCl heterojunctions assemblies with narrow bandgap of 3.05 eV and mesoporous structure extend the photoresponse to visible light region and could provide sufficient sur-face active sites.The visible-light-driven photocatalytic degradation of high-toxic norfloxacin for Bi/BiOCl heterojunctions is up to 95.5％within 20 min,representing several times that of pristine BiOCl nanosheets and the physical mixture.It is attributed to the in-situ formation of Bi/BiOCl heterojunctions and surface plasmon resonance(SPR)effect of plasmon Bi promoting charge transfer,and the obvious photothermal effect promoting the photocatalytic reaction,which are verified by experimental and density functional theory(DFT)calculations.This strategy provides ideal perspectives for fabricating metal/semiconductor heterojunctions photocatalysts with high-performance.
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    Prediction and interpretation of photocatalytic NO removal on g-C3N4-based catalysts using machine learning

    Jing LiXinyan LiuHong WangYanjuan Sun...
    477-483页
    查看更多>>摘要：Predictive modeling of photocatalytic NO removal is highly desirable for efficient air pollution abatement.However,great challenges remain in precisely predicting photocatalytic performance and understanding interactions of diverse features in the catalytic systems.Herein,a dataset of g-C3N4-based catalysts with 255 data points was collected from peer-reviewed publications and machine learning(ML)model was proposed to predict the NO removal rate.The result shows that the Gradient Boosting Decision Tree(GBDT)demonstrated the greatest prediction accuracy with R2 of 0.999 and 0.907 on the training and test data,respectively.The SHAP value and feature importance analysis revealed that the empirical cate-gories for NO removal rate,in the order of importance,were catalyst characteristics＞reaction process＞preparation conditions.Moreover,the partial dependence plots broke the ML black box to further quan-tify the marginal contributions of the input features(e.g.,doping ratio,flow rate,and pore volume)to the model output outcomes.This ML approach presents a pure data-driven,interpretable framework,which provides new insights into the influence of catalyst characteristics,reaction process,and preparation con-ditions on NO removal.
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    Highly efficient photocatalytic conversion of CO2 into CH4 over Cu single atom promoted heterojunction:The effect of uplifted d-band center

    Hao ZhangQian LiuZhurui Shen
    484-488页
    查看更多>>摘要：Photoreduction of CO2 to solar fuels has caused great interest,but suffers from low catalytic efficiency and poor selectivity.Herein,we designed a S-scheme heterojunction(Cu-TiO2/WO3)with Cu single atom to significantly boost the photoreduction of CO2.Notably,the developed Cu-TiO2/WO3 achieved the solar-driven conversion of CO2 to CH4 with an evolution rate of 98.69 μmol g-1 h-1,and the electron selectiv-ity of CH4 reached 88.5％.The yield was much higher than those of pristine WO3,TiO2/WO3 and Cu-TiO2 samples.Experimental and theoretical analysis suggested that the S-scheme heterojunction accelerated charge migration and inhibited the recombination of electron-hole pairs.Importantly,the charge sepa-ration effect of the heterojunction meliorated the position of the d-band.The uplifted d-band centers of Cu and Ti on Cu-TiO2/WO3 not only improved the electron interaction between Cu single atoms and substrate-TiO2,accelerated the adsorption and activation of CO2 on the active sites of Cu single atom,but also optimized the Gibbs free energies of CH4 formation pathway,leading to excellent selectivity toward CH4.This work provides new insights into the design of photocatalyst systems with high photocatalytic performance.
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    Alkali-resistant NOx reduction over FeVO4/TiO2 catalysts via regulating the electron transfer between Fe and V

    Yunang DongPenglu WangXiangyu LiuJiang Deng...
    489-495页
    查看更多>>摘要：The presence of alkali metals in exhaust gas from stationary resources causes a grand challenge for the practical application of selective catalytic reduction(SCR)of NOx with NH3.Here,alkali-resistant NOx reduction has been successfully implemented via tailoring the electron transfer over Fe and V species on FeVO4/TiO2 catalysts.The strong interaction between Fe and V induced electron transfer from V to Fe and strengthened the adsorption and activation of NH3 and NO over active VOx sites.In the presence of K2O,the strong electron withdrawing effect of Fe offset the electron donating effect of K on the VOx species,thus protecting the active species VOx to maintain the NOx reduction ability.The enhanced adsorption and activation of NH3 allowed SCR reaction to proceed via E-R mechanism even after K2O poisoning.This work elucidated the electronic effects on the alkali metals resistance of traditional ferric vanadate SCR catalysts and provided a promising strategy to design SCR catalysts with superior alkali resistance.
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    Efficient photocatalytic NADH regeneration with Rh-loaded Z-scheme mediator-free system

    Yi ZhouYiling HeMing GaoNingkai Ding...
    496-500页
    查看更多>>摘要：Nicotinamide adenine dinucleotide(NADH)regeneration is necessary for the sustainable application of enzymatic industry.The Rh-based complex[Cp*Rh(bpy)(H)]+has been widely used as an important me-diator in NADH regeneration systems,but it is limited by complexity and high cost.Here,a Z-scheme was constructed by loading Rh onto carbon nitride nanosheets/carbon nitride quantum dots(CN-CNQD).The resultant catalyst achieved a high yield of NADH in a mediator-free(M-free)system of 0.283 mmol L-1 g-1 min-1,which is 5.29 times that of pure CN.ADH enzyme introduction experiments confirmed that the enzyme active product 1,4-NADH could reach 34.21％selectivity in the M-free system.Mecha-nism research revealed that the heterojunction between CNs and CNQDs improved the NADH regener-ation activity in the traditional M-involved system,while Rh loading was proved to optimize the yield and selectivity of 1,4-NADH in M-free system.The immobilized Rh shows more competitiveness than[Cp*Rh(bpy)(H)]+.This study contributes to the construction of an M-free system for further application in greener,lower-cost enzymatic processes.
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    Quantitative detection of citrate for early stage diagnosing of prostate cancer:Discriminating normal to cancer in prostate tissues

    Selvaraj MuthusamyKanagaraj RajalakshmiPalanisamy KannanYun-Sik Nam...
    501-506页
    查看更多>>摘要：Prostate cancer(PC)biomarker-citrate detection is clinically important to diagnose PC in early stages.Methylquinolinium iodide(Q)conjugated indole-phenylboronic acid(IB)was designed as a red-emissive QIB probe for the detection of citrate through Lewis acid-base reaction and intramolecular charge transfer(ICT)sensing mechanisms.Boronic acid acts as Lewis acid as well as citrate(Lewis base)recognition unit.The probe reacted with citrate,showing enhanced red emissions.Since the probe has excellent water solubility and great biocompatibility,practical application in biological systems is possible.Citrate was monitored precisely in the mitochondria organelle(in vitro)of living cells with a positive charge on QIB.Also,endogenous(in situ)citrate was detected quantitatively to discriminate non-cancerous and PC mice,observed strong and lower(negligible)emission intensity on non-cancerous and cancerous prostate tissues,respectively.Because,the concentration of citrate is higher in healthy prostate compared with PC prostate.Furthermore,the analysis of sliced prostate tissues can give PC-related information for clinical diagnosis to prevent and treat PC in the initial stages.Therefore,we believe that the present probe is a promising biochemical reagent in diagnosing PC.
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