Nature Communications
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2025
·Vol. 16
·期 1
·1-10
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IF 15.7
Chen Qin,Tan Yao,Wang Xiqing,Wang Qiyou,Li Hongmei,Liu Kang,Fu Junwei,Chai Liyuan,Liu Min,Lin Zhang
Acidic CO 2 electroreduction to multi-carbon (C 2+ ) products using Cu-based catalyst has attracted considerable attention for CO 2 recycling due to high single-pass CO 2 utilization. However, its development is drastically limited by the poor stability, especially at high current density, caused by Cu dissolution/reconstruction during the reaction. Herein, we find the trace dissolved oxygen in the electrolyte accounts for the Cu dissolution/reconstruction and report an in-situ passivation strategy to prevent oxygen adsorption for inhibiting Cu dissolution/reconstruction for high stability CO 2 -to-C 2+ conversion. Theoretical and in situ spectroscopy demonstrate that aluminum citrate (AC) passivation layer decreases the adsorption of oxygen on Cu surface to effectively prevent the Cu oxidation, which is beneficial for the formation and adsorption of linearly bonded *CO toward C-C coupling. As the result, the Cu catalysts with AC layer achieve over 60% Faradaic efficiency C 2 H 4 and 38.7% energy efficiency to C 2+ for over 150 h stability at 500 mA cm −2 in strong acidic electrolyte.
研究领域:
电化学
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催化化学
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环境科学
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能源材料
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可持续化学
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二氧化碳利用
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界面科学
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FOOD CHEMISTRY
·
2018
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IF 4.946
Jiangkun Dai,Wenjia Dan,Nian Li,Ruixue Wang,Yao Zhang,Nannan Li,Ruizhi Wang,Junru Wang
Thirty-one canthin-6-one analogues, mainly including C 2 or C 5 or D ring modified canthin-6-ones, were designed and synthesized in order to study their antibacterial activity and structure-activity relationships. The analogue 28 with the highest bioactivity had a peak minimum inhibitory concentration of 4 μg/ml and showed low cytotoxicity against L02 cells and good “drug-like” properties. The antibacterial effect of 28 was characterized further by scanning electron microscopy, cytoplasmic β -galactosidase leakage assay, molecular docking evaluation, UV–visible analysis and isothermal titration calorimetry (ITC) measurement. The results showed that 28 may exert its bactericidal effect by damaging bacterial cell membranes and disrupting the function of DNA topoisomerases, both of which could lead to rapid cell death.
研究领域:
药理学
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有机化学
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微生物学
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Nature Communications
·
2026
·
IF 15.7
Li Yukong,Wang Ziyi,He Xiaoyang,Sun Chen,Zheng Qikai,Jiang Yilin,Chen Zuofeng,Fei Honghan
Hybrid lead halides have demonstrated great promise for CO 2 photoreduction due to their excellent photophysical properties. However, developing a single-component hybrid lead halide that combines high intrinsic stability with near-infrared absorption remains a significant challenge. Herein, to address both issues, we design a series of nine highly stable lead halide frameworks functionalized by bis(terpyridine)-metal complexes, which exhibit strong light absorption extending into the near-infrared region up to 1150 nm. Unlike their symmetric chloride and bromide analogues, the charge-polarized lead iodide sites in bis(terpyridine)-metal-functionalized frameworks serve as highly efficient C–C coupling centers for C 2 production in near-infrared-driven CO 2 photoreduction, achieving notable C 2 production rates of up to 14.2 μ mol g -1 h -1 with electron selectivities as high as 86%. These performances match the state-of-the-art among all reported single-component, near-infrared-responsive photocatalysts. This work highlights the potential of coordination-driven assembly of highly stable lead halide frameworks for near-infrared-driven artificial photosynthesis.
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Nanoscale
·
2026
·
IF 5.2
Shuai Wang,Liu Chang,Yue Qin,Zepu Chen,Qingfa Wang
The conversion of CO 2 into high-value chemicals using renewable electricity holds great application prospects. However, improving the selectivity toward C 2 products remains a challenge. Here, we report a Sn atomically dispersed in Cu2O matrix (Sn-Cu2O), synthesized via a facile one-pot method. The as-prepared catalyst Sn-Cu2O-0.025 displays a Faradaic efficiency of 73.2% for C2 products with ethanol accounting for 32.1% at the current density of 200 mA cm-2 . Based on in-situ FT-IR characterization, the introduction of Sn promotes the activation of CO2 to *CO and enhances the coverage of *CO. As a result, the C-C coupling accelerates the formation process of key intermediates *OCCOH and enhances the selectivity of the C2 products. This study provides insights
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ENERGY & FUELS
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2025
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IF 5.3
Zuozheng Liu,Furan Guo,Liang Ge,Shican Jiang,Xianjun Lang,Abhishek Dutta Chowdhury,Yanping Zheng,Kang Cheng,Ye Wang
The product of CO2 hydrogenation over Ru-based catalysts is still limited to those of CO and CH4. In this work, we attempt to realize the direct synthesis of C2+ hydrocarbons from CO2 hydrogenation by the relay of the reverse water–gas shift (RWGS) reaction and Fischer–Tropsch reaction over Ru catalysts. We employ a series of preparation methods to adjust the surface ratios of metallic Ru and Ru oxides (Ru0/Ruδ+), including alkali metal promotion, carbon coating, and the construction of bimetallic sites. It was found that an appropriate Ru0/Ruδ+ ratio at around 1.2 is beneficial to the formation of C2+ hydrocarbons, while a high Ru0 content catalyzes the formation of CH4, and a high Ruδ+ content promotes the RWGS reaction. Under 300 °C and 3 MPa, the optimized K-GaRu@C catalyst achieves a C2+ selectivity of 38% at a CO2 conversion of 31%. Our work highlights the universality of relay catalysis, which separates complicated reaction networks into a few controllable steps, thus allowing the selective synthesis of high-value products from CO2 hydrogenation.
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CELL AND TISSUE RESEARCH
·
2022
·Vol. 390
·期 2
·293-313
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IF 4.051
Li Zhen-Fang,Hao Shuang-Li,Wang Lan-Min,Qi Hong-Yu,Wang Jia-Ming,Tan Fu-Qing,Yang Wan-Xi
Spermatogenesis is a finely regulated process of germ cell proliferation and differentiation that leads to the production of sperm in seminiferous tubules. Although the mammalian target of rapamycin (mTOR) signaling pathway is crucial for spermatogenesis in mammals, its functions and molecular mechanisms in spermatogenesis remain largely unknown in nonmammalian species, particularly in Crustacea. In this study, we first identified es-Raptor (the core component of mTOR complex 1) and es-Rictor (the core component of mTOR complex 2) from the testis of Eriocheir sinensis . Dynamic localization of es-Raptor and es-Rictor implied that these proteins were indispensable for the spermatogenesis of E. sinensis. Furthermore, es-Raptor and es-Rictor knockdown results showed that the mature sperm failed to be released, causing almost empty lumens in the testis. We investigated the reasons for these effects and found that the actin-based cytoskeleton was disrupted in the knockdown groups. In addition, the integrity of the testis barrier (similar to the blood-testis barrier in mammals) was impaired and affected the expression of cell junction proteins. Further study revealed that es-Raptor and es-Rictor may regulate spermatogenesis via both mTORC1- and mTORC2-dependent mechanisms that involve es-rpS6 and es-Akt/es-PKC, respectively. Moreover, to explore the testis barrier in E. sinensis , we established a cadmium chloride (CdCl 2 )–induced testis barrier damage model as a positive control. Morphological and immunofluorescence results were similar to those of the es-Raptor and es-Rictor knockdown groups. Altogether, es-Raptor and es-Rictor were important for spermatogenesis through maintenance of the actin filament network and cell junctions in E. sinensis.
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Catalysts
·
2021
·Vol. 11
·期 5
·535
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IF 4.146
Shuaikang Zhu,Xiaona Ren,Xiaoxue Li,Xiaopo Niu,Miao Wang,Shuang Xu,Zheyuan Wang,Yunxi Han,Qingfa Wang
The copper-based catalyst is considered to be the only catalyst for electrochemical carbon dioxide reduction to produce a variety of hydrocarbons, but its low selectivity and low current density to C2products restrict its development. Herein, a core-shell xZnO@yCu2O catalysts for electrochemical CO2reduction was fabricated via a two-step route. The high selectivity of C2products of 49.8% on ZnO@4Cu2O (ethylene 33.5%, ethanol 16.3%) with an excellent total current density of 140.1 mA cm−2was achieved over this core-shell structure catalyst in a flow cell, in which the C2selectivity was twice that of Cu2O. The high electrochemical activity for ECR to C2products was attributed to the synergetic effects of the ZnO core and Cu2O shell, which not only enhanced the selectivity of the coordinating electron, improved the HER overpotential, and fastened the electron transfer, but also promoted the multielectron involved kinetics for ethylene and ethanol production. This work provides some new insights into the design of highly efficient Cu-based electrocatalysts for enhancing the selectivity of electrochemical CO2reduction to produce high-value C2products.Keywords:CO2electrochemical reduction;core-shell structure;ZnO@Cu2O;synergy effect;C2products selectivity
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JOURNAL OF HAZARDOUS MATERIALS
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2020
·
IF 9.038
Y.L. Zhao,G.G. Li,H.M. Hou,J.C. Shi,S.N. Luo
We investigate atomic and molecular emission of laser-ablated nitromethane in an Ar or N 2 buffer gas, with fs laser-induced breakdown spectroscopy. The electronic bands of CN, C 2 , and NH molecules and the atomic transition lines of C I, N I, and H α are identified. The time series of the emissions are obtained, and the formation mechanisms of CN and C 2 are deduced. The CN violet system, the B 2 Σ + -X 2 Σ + (0-0) band, is chosen to extract plasma temperature from the experimental spectra.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-12
·
IF 14.7
Peng Yong,Xiong Hanting,Zhang Peixin,Zhao Zhiwei,Liu Xing,Tang Shihui,Liu Yuan,Zhu Zhenliang,Zhou Weizhen,Deng Zhenning,Liu Junhui,Zhong Yao,Wu Zeliang,Chen Jingwen,Zhou Zhenyu,Chen Shixia,Deng Shuguang,Wang Jun
Olefin/paraffin separations are among the most energy-intensive processes in the petrochemical industry, with ethylene being the most widely consumed chemical feedstock. Adsorptive separation utilizing molecular sieving adsorbents can optimize energy efficiency, whereas the size-exclusive mechanism alone cannot achieve multiple olefin/paraffin sieving in a single adsorbent. Herein, an unprecedented sieving adsorbent, BFFOUR-Cu-dpds (BFFOUR = BF 4 - , dpds = 4,4’-bipyridinedisulfide), is reported for simultaneous sieving of C 2 -C 4 olefins from their corresponding paraffins. The interlayer spaces can be selectively opened through stronger guest-host interactions induced by unsaturated C = C bonds in olefins, as opposed to saturated paraffins. In equimolar six-component breakthrough experiments (C 2 H 4 /C 2 H 6 /C 3 H 6 /C 3 H 8 /n-C 4 H 8 /n-C 4 H 10 ), BFFOUR-Cu-dpds can simultaneously divide olefins from paraffins in the first column, while high-purity ethylene ( > 99.99%) can be directly obtained through the subsequent column using granular porous carbons. Moreover, gas-loaded single-crystal analysis, in-situ infrared spectroscopy measurements, and computational simulations demonstrate the accommodation patterns, interaction bonds, and energy pathways for olefin/paraffin separations.
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ACS Sustainable Chemistry & Engineering
·
2024
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IF 7.1
Quhan Chen,Xiang Luo,Guohao Mu,Xinyi Mao,Hongfeng Yin,Edward Henry Lester,Tao Wu
Electrochemical reduction of CO2 to valuable C2+ chemicals using renewable energy is a crucial pathway for sustainable development, replacing traditional nonrenewable feedstocks. In this study, CuO-based materials were synthesized with and without microwave heating as electrocatalysts for CO2 reduction. The CuO synthesized under microwave irradiation (MW-CuO) showed a similar morphology to the conventionally heated samples but exhibited a higher density of defect sites with increased grain boundaries (GBs). MW-CuO electrodes with a Cu2+ and CO32– reactant ratio of 1.1 showed superior catalytic performance under identical reaction conditions. In particular, the catalytic activity of the MW-CuO electrode at −1.04 V vs RHE for the C2+ products is 49.3% higher than that of the CuO electrode. A faradaic efficiency (FE) of 71.9% is achieved for C2+ products, which is among the highest yields reported for OD-Cu catalysts. The spent MW-CuO electrode exhibited a significantly higher Cu+ to Cu0 ratio compared to the CuO electrode. The synergy of Cu(I) species and defective surface features is speculated to be responsible for the improved CO2ER selectivity toward multicarbon products. However, the activity decreased for longer reactions, which was attributed to the loss of defect sites and Cu agglomerations. This study highlights the effectiveness of a simple synthesis approach for the production of defect-rich electrocatalysts that improve the efficiency and selectivity of CO2 reduction.
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Small
·
2024
·
IF 13
Yi-Ran Du,Xiao-Qiang Li,Xian-Xia Yang,Guo-Yi Duan,Yong-Mei Chen,Bao-Hua Xu
In this study, the copper-nickel (Cu–Ni) bimetallic electrocatalysts for electrochemical CO 2 reduction reaction(CO 2 RR) are fabricated by taking the finely designed poly(ionic liquids) (PIL) containing abundant Salen and imidazolium chelating sites as the surficial layer, wherein Cu–Ni, PIL–Cu and PIL–Ni interaction can be readily regulated by different synthetic scheme. As a proof of concept, Cu@Salen-PIL@Ni(NO 3 ) 2 and Cu@Salen-PIL(Ni) hybrids differ significantly in the types and distribution of Ni species and Cu species at the surface, thereby delivering distinct Cu–Ni cooperation fashion for the CO 2 RR. Remarkably, Cu@Salen-PIL@Ni(NO 3 ) 2 provides a C2+ faradaic efficiency (FE C2+ ) of 80.9% with partial current density ( j C 2+ ) of 262.9 mA cm −2 at −0.80 V (versus reversible hydrogen electrode, RHE) in 1 m KOH in a flow cell, while Cu@Salen-PIL(Ni) delivers the optimal FE C2+ of 63.8% at j C2+ of 146.7 mA cm −2 at −0.78 V. Mechanistic studies indicates that the presence of Cu–Ni interfaces in Cu@Salen-PIL@Ni(NO 3 ) 2 accounts for the preserve of high-valence Cu(I) species under CO 2 RR conditions. It results in a high activity of both CO 2 -to-CO conversion and C–C coupling while inhibition of the competitive HER.
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ChemistrySelect
·
2025
·Vol. 10
·期 33
·e03600
·
IF 2
Jiaqin Wang,Fang Li,Yasi Wang,Wei Huang
Graphical The Al-doped ZnO catalyst has a lower work function, which is conducive to promoting the dissociation of CH x O* to form CH x *; it also facilitates the generation of Zn x+ and oxygen vacancies, which further promotes the generation of C 2+ OH. The direct conversion of syngas into C 2+ OH has attracted significant attention as a potential pathway for energy conversion. However, this process typically requires the use of precious metals or the collaborative action of multi-component catalysts, making it relatively complex. In this paper, simple and economical Al-doped ZnO catalysts were employed for the synthesis of C 2+ OH. The results show that the work function, Zn x+, and the relative content of oxygen vacancies are linearly related to C 2+ OH/ROH. When the doping amount was 7 mol%, the catalyst had the highest C 2+ OH/ROH (82.6 wt%), corresponding to the lowest work function value, the highest Zn x+ content, and the relative content of oxygen vacancies. We reveal that the successful synthesis of C 2+ OH depends not only on the low work function of the Al-doped ZnO but also on the existence of the oxygen vacancies and Zn x+ sites. Specifically, the low work function induced by Al doping facilitates electron transfer in the reaction, facilitating the dissociation of CH x O* into CH x *. Meanwhile, the presence of oxygen vacancies enhances the dissociative adsorption capacity of CO and facilitates the formation of CH x * species. The Zn x+ sites serve as active centers for carbon chain growth, promoting C–C coupling through the insertion of CO or CH x O* into CH x *, thereby achieving chain elongation.
研究领域:
催化化学
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材料科学
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化学工程
·
能量转换
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