JOURNAL OF POWER SOURCES
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2022
·
IF 9.794
Tong Dou,Jiawei Du,Jinqing He,Yiping Wang,Xuhui Zhao,Fazhi Zhang,Xiaodong Lei
The transformation of CO 2 into value-added products is a hot research topic. Metal copper as an electrochemical catalyst shows activity for generating multi-carbon products in CO 2 electroreduction. Herein, Cu 2 S nanorods/copper mesh (Cu 2 S/CM) is successfully fabricated, and exhibits high performance of CO 2 electroreduction to ethanol. At −0.8 V vs RHE , it achieved the Faraday efficiency (FE) of 13.5%, the partial current density of 13.3 mA cm −2 and the yield of 986.4 μmol L −1 h −1 for ethanol. Experiments and theoretical calculations indicated that the high performance is benefits from the high density of Cu 0 and Cu + pairs derived from Cu 2 S/CM during CO 2 electroreduction and an appropriate surface Cu 0 /Cu + ratio of 0.17. The Cu 0 –Cu + sites facilitate the adsorption of key intermediate *CH 2 CHO and decrease the energy barrier of the ethanol pathway. This work provides not only a new comprehension of CO 2 electroreduction with Cu 2 S catalyst but also a design idea based on Cu 0 –Cu + sites in Cu/Cu 2 S catalyst.
研究领域:
电化学
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催化
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可再生能源
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材料科学
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DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2024
·
IF 5.7
Yuanyuan Li,Huinan Chen,Rong Huang,Dongmei Deng,Xiaoxia Yan,Liqiang Luo
Backgroud The global prevalence of diabetes mellitus, a serious chronic disease with fatal consequences for millions annually, is of utmost concern. The development of efficient and simple devices for monitoring glucose levels is of utmost significance in managing diabetes. The advancement of nanotechnology has resulted in the indispensable utilization of advanced nanomaterials in high-performance glucose sensors. Modulating the morphology and intricate composition of transition metals represents a viable approach to exploit their structure/function correlation, thereby achieving optimal electrocatalytic performance of the synthesized catalysts. Results Herein, a sensitive and rapid Cu-encapsulated Cu 2 S@nitrogen-doped carbon (Cu@Cu 2 S@N–C) hollow nanocubes-functionalized microfluidic paper-based analytical device (μ-PAD) was fabricated. Through a delicate sacrificial template/interface technique and thermal decomposition, inter-connected hollow networks were formed to boost the active sites, and the carbon shell was coated to protect Cu from being oxidation . For application, the constructed μ-PAD is used for glucose sensing utilizing an origami automated sample pretreatment system enabled by a simple application of strong alkaline solution on wax paper. Under optimal circumstances, the Cu@Cu 2 S@N–C electrochemical biosensor exhibits broad detection range of 2–7500 μM (R 2 = 0.996) with low detection limit of 0.16 μM (S/N = 3) and high sensitivity of 1996 μA mM −1 cm −2 . Additionally, the constructed μ-PAD also exhibited excellent selectivity, stability, and reproducibility. Significance By rationally designing the double-shell hollow nanostructure and introducing Cu-encapsulated inner layer, the synthesized Cu@Cu 2 S@N–C hollow nanocubes show large specific surface area , short diffusion channels, and high stability. The proposed origami μ-PAD has been successfully applied to serum samples without any additional sample preparation steps for glucose determination, offering a new perspective for early nonenzymatic glucose diagnosis.
研究领域:
生物医学工程
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纳米材料科学
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分析化学
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DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Chengbao Zhou,Shuyun Wan,Yucheng Chen,LiKang Fu,HongYi Chen,Chenxia Kang,Qiming Liu
Owing to high theoretical capacity, nickel sulfides are competitive anode materials for sodium-ion batteries (SIBs). Nevertheless, their developments are greatly obstructed by low conductivity, as well as poor cycle stability resulted from structural pulverization and collapse. Herein, dispersed Ni 3 S 2 nanoparticles (20–30 nm) are encased in carbon shells (NiS x @C) through a simple hydrothermal reaction and carbon coating process . The dispersed nanoparticles provide short ion transport channels and a large number of active sites for sodium storage, and carbon coating can enhance the conductivity and structural stability of materials. Meanwhile a small amount of copper is added to further increase the capacity of materials based on synergistic effect and increase of defects. The Cu 2 S/NiS x @C composite electrode exhibits an outstanding pseudocapacitive behavior in reaction kinetics. Evaluated as an anode for SIBs, such electrode performs a high rate capability of 343.8 mAh g −1 at 5 A g −1 and excellent cycling performance of 485.3 mAh g −1 at 0.1 A g −1 after 100 cycles and 350.4 mAh g −1 at 0.5 A g −1 after 500 cycles. This work shows that nickel sulfides are promising materials for sodium-ion storage through structural design and modification, and would be of great significance to promote the development of advanced SIBs.
研究领域:
材料科学
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电化学
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2026
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IF 3.9
Chenlong Xu,Shaoqi Zhang,Jun Pang,Tao Liu,Yu Liu,Zhenyu Chu,Wanqin Jin
Glycerol is an attractive alternative carbon source for microbial fermentations due to its low cost and high degree of reduction, and its concentration should be precisely monitored to enable product concentrations on the order of tens of grams per liter under advanced fermentation conditions. However, current analytical methods for quantifying glycerol are always hampered by bulky instrumentation and complex pretreatment procedures due to large fluctuations in glycerol concentration caused by numerous coexisting substances in broth. To address this challenge, we have proposed an ultrasensitive and ultrafast electrochemical biosensor constructed by the nanosheet-decorated hollow Cu2S nanocubes to achieve direct, accurate quantification of glycerol in untreated samples. This hollow cubic architecture was created through a precursor-sacrifice strategy, which can greatly shorten electron-transfer pathways and provide abundant enzyme immobilization sites for remarkable signal amplification and acceleration. This biosensor enabled us to finish a detection within only 9 s and exhibited an ultrawide linear response range from 0.005 to 0.295 M without any pretreatment of the original broth. This specific biosensing technique is promising for providing a practical solution for fast, real-time glycerol monitoring, thereby supporting the improvement of the automation and unattended operation for the development of modern industrial fermentation.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Liuxu Wei,Jinyao Chi,Yue Yin,Yuntian Lan,Zexing Wu,Jingqi Chi,Zhenyu Xiao,Zhen Zhang,Lei Wang,Fangxu Dai
Although the carbon matrix encapsulated functioned LDH should be an ideal model to solve the kinetics and durability issues of cathode materials of aqueous alkaline zinc batteries (AAZBs), the construction of this target structure remains synthetically challenging, due to the thermal instability of LDH. In this work, we develop a redox-driven in situ etching strategy to construct a strongly coupled Cu 2 S/CoNi-LDH heterojunction within an octahedral carbon matrix (Cu 2 S/LDH@C). The strong coupled Cu 2 S/LDH hetero-interface builds a robust built-in electric field (BEF) with 2.39 electrons transferred from LDH to Cu 2 S, which is beneficial for enhanced reaction kinetics. Furthermore, the 3D carbon network serves as a confined framework that mitigates the volume effect during the charging/discharging process. The optimized Cu 2 S/LDH@C electrode delivers a high specific capacity of 235.6 mAh g −1 (1696.0 F g −1 ) at 1 A g −1 , and maintains 82.1% of its initial capacity after 10,000 cycles. The assembled Cu 2 S/LDH@C//rGO-Zn device achieves a remarkable energy density of 254.7 Wh kg −1 at 0.45 kW kg −1 power density. This redox-driven in situ etching strategy provides a general and reliable pathway for constructing carbon-encapsulated heterostructures, opening a possible pathway for electrode design that simultaneously addresses kinetics and stability issues in advanced energy storage systems.
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ChemElectroChem
·
2021
·Vol. 8
·期 23
·4550-4558
·
IF 4.59
Yanyang Guo,Xianyang Li,Zhuqing Zhao,Hongya Wang,Jiakang Qu,Zuojun Hu,Hongwei Xie,Huayi Yin
Conventional sulfide metallurgy suffers from SO x gas emission and high energy consumption, owing to the multiple-step extraction processes and high temperatures that are above the melting point of the extracted metals. Herein, liquid Cu 2 Sb alloy can be directly electrochemically extracted from the liquid Sb 2 S 3 -Cu 2 S with no sulfide oxides emission in eutectic NaCl-KCl molten electrolyte at 730 °C. The use of Sb 2 S 3 decreases the melting point of Cu 2 S and the Sb decreases the melting temperature of Cu. The Sb 2 S 3 -Cu 2 S mixture experiences three stages in the electrochemical desulfurization process: the insertion of Na + into liquid sulfides, the removal of S 2− and metallization, and finally the formation of uniform liquid Cu 2 Sb alloy. The Sb 2 S 3 -Cu 2 S can be completely electro-converted into Cu 2 Sb at 2.6 V for 6 hours. This study provides a straightforward and environmentally friendly route to electro-synthesize liquid alloys from their molten sulfide minerals. Graphical Paving the way : The conventional pyrometallurgical route extracts copper and antimony metals from their sulfide minerals through roasting, smelting, and refining processes. These steps call for high temperature and generate SO 2 and CO 2 , which will cause intense energy consumptions and pollution. This paper paves a green electrochemical route to prepare liquid Cu 2 Sb alloy from their molten sulfides at 730 °C without SO x (CO 2 ) emissions.
研究领域:
冶金学
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电化学
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材料科学
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可持续工程
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高影响因子
JOURNAL OF MATERIALS CHEMISTRY
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2012
·Vol. 22
·期 43
·23169-23174
·
IF 5.968
Xianguang Ding,Yu Zou,Jiang Jiang
The synthesis of hybrid nanostructures has been of great interest to many material scientists, yet simple and facile routes to prepare these structures remain a difficult task with many reaction variables to tune. Herein, we report the synthesis of Au–Cu2S heterodimers from AuCu alloy nanoparticles by simply adding 1-dodecanethiol. Detailed characterization of this structural transformation process revealed that the crucial step of this synthetic approach was the alloy oxidization and subsequent formation of intermediate copper thiolate. Roles of surfactants and sulfur source have also been investigated. These observations provide critical insight into the understanding of the pathways of structure transitions from AuCu alloy to Au–Cu2S heterodimer nanoparticles, and will open up new ways of synthesizing heterodimer nanoparticles from metallic alloys.
研究领域:
材料科学
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纳米技术
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2023
·
IF 7.2
Xiaoyan Xu,Qihong Lu,Jiawei Wu,Wei Mo,Lei Zuo,Ning Yang,Weiwei Xia,Xianghua Zeng
To improve CdS photocatalytic activity , both Cu x Cd 1- x S nanorods and Cu 2 S@CdS p-n heterostructures have been prepared with a simple solvothermal method . The results showed that the maximum H 2 generation rate is equal to 10 mmol h −1 g −1 and 12.1 mmol h −1 g −1 for samples 0.3-Cu 2 S@CdS and Cu 0.1 Cd 0.9 S, respectively, which are nearly 9 and 12 times larger than that of CdS (1.2 mmol h −1 g −1 ) without using Pt as the co-catalyst. The measurements of the light absorption revealed that the samples Cu 2 S@CdS p-n heterostructures and Cu x Cd 1- x S nanorods have an increased visible light absorption. Band structure revealed that Cu 2 S@CdS p-n composite is a type-II heterostructure, which facilitates the separation of photoexcited charge carriers . Furthermore, as the Cu-doping CdS introduced a defect level , which induced the increase of carrier density, and the defect energy level in Cu 0.1 Cd 0.9 S and the band energy in CdS form a type-II heterostructure. Due to the appropriate band structure and stronger light absorption, Cu 2 S@CdS p-n heterostructures and Cu + -doping CdS demonstrated an improved photocatalytic activity and stability.
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高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Jinyun Liu,Jiamin Liu,Ting Zhou,Xiaofei Huang,Yajun Zhu,Haojun Xu,Tianli Han
Magnesium/lithium hybrid-ion batteries (MLHBs) are considered promising owing to their high theoretical capacity and good safety and a broad range of magnesium resources; however, nonideal cathode materials and electrolytes restrict their development. Here, a composite composed of NiS2 nanosheet-coated Cu2S (Cu2S@NiS2) cubes is developed as a cathode material, which improves conductivity and accommodates volume change, achieving high and stable electrochemical performances. Also, we develop a LiCl-introduced all-phenyl-complex electrolyte (APC-LiCl), exhibiting a wide electrochemical window, stable cycling properties, and enhanced Mg dissociation/deposition compared to LiBF4 or LiTFSI-induced APC systems. The constructed MLHB exhibits a high energy density of 330 Wh kg–1 on an active cathode material basis when cycling at 0.3 A g–1, a stable specific capacity of 215 mAh g–1 after 400 cycles at 0.5 A g–1, and excellent temperature tolerance and rate performance, enabling our findings to be broadly applied for developing emerging energy-storage systems.
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DOI
PubMed
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2023
·Vol. 29
·期 19
·e202203831
·
IF 4.3
Shouning Yang,Shengkun Wang,Yaru Wang,Jian Song,Yuqin Jiang,Liang Chen,Huayan Yang
Graphical Ultrathin Two-Dimensional BiOCl-Bi 2 S 3 -Cu 2 S Ternary Heterostructures with Enhanced LSPR effect for NIR Photonic Bacterial Disinfection (Chen, Yang, et al.). : Photonic disinfection, particularly near-infrared (NIR) light triggered antibacterial, has emerged as a highly promising solution for combating pathogenic microbes due to its spatiotemporal operability, safety, and low cost of apparatus. However, it remains challenging to construct NIR-responsive antibacterial agents with high light-converting efficacy and elucidate synergistic mechanisms. In this work, ultrathin two-dimensional (2D) BiOCl-Bi 2 S 3 -Cu 2 S ternary heterostructures that can efficiently kill drug-resistant bacteria were synthesized by doping 0D Bi 2 S 3 and Cu 2 S nanoparticles in the 2D BiOCl nanosheets via a facile one-pot hydrothermal method. Notably, the incorporation of Cu 2 S nanoparticles bestows strong NIR light-harvesting capability to the composite nanosheets due to their localized surface plasmon resonance (LSPR). Upon NIR light illumination, the BiOCl-Bi 2 S 3 -Cu 2 S nanosheets can achieve enhanced photonic hyperthermia and reaction oxygen species (ROS) generation, serving as single light-activated bi-functional photothermal/photodynamic therapeutics. High-speed hot electrons and large local electronic fields caused by LSPR might play an important role in thermal vibrations and effective carrier separations, respectively. Benefiting from the unique ternary heterostructures, both the photothermal conversion and ROS generation efficacy of BiOCl-Bi 2 S 3 -Cu 2 S nanosheets are significantly improved compared to the binary BiOCl-Cu 2 S or BiOCl-Bi 2 S 3 nanosheets. Accordingly, the ternary composite nanosheets can effectively kill bacteria via the NIR-driven photonic disinfection mechanism. This work presents a new type of 2D composite nanosheets with ternary heterostructures for NIR photonic disinfection.
研究领域:
材料科学
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微生物学
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纳米医学
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DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2024
·
IF 4
Meng Ye,Hongying Hou,Xianxi Liu,Zhaowei Sun,Xiaohua Yu,Ju Rong
With the development of the consumer society, low cost and high performance supercapacitors are being pursued. To realize the practical supercapacitors, developing the cheap and highly capacitive electrode is the most essential. However, it is a harsh challenge to achieve this target based on single-component electrode. Herein, a series of inexpensive ternary-metal-sulfides, 2MnS/Cu 2 S/ x ZnS/C ( x = 0, 0.5, 1, 2, 3) are synthesized by hydrothermal reaction and the subsequent calcination with expired manganese/copper gluconates as the raw materials for the electrode in the pseudocapacitors. Furthermore, the effect of ZnS's content on the electrochemical properties of the ternary composites is also investigated. Specially, the optimal 2MnS/Cu 2 S/xZnS/C( x = 1) can output a specific capacitance of 1608 F/g at 1 A/g in the three-electrode system, while the 2MnS/Cu 2 S/xZnS/C||AC( x = 1) asymmetric supercapacitor can deliver a specific capacitance of 194 F/g at 1 A/g with the desirable energy density (800 W/kg) and power density (70.9 Wh/kg), higher than those of other samples. Especially, even after 2000 cycles at 5.0 A/g, the 2MnS/Cu 2 S/xZnS/C||AC( x = 1) asymmetric supercapacitor also delivers the reversible specific capacitance of 103 F/g with high capacitance retention of 97.0 %, indicating high cycling stability. The outstanding performances of the optimal 2MnS/Cu 2 S/xZnS/C( x = 1) may be attributed to the bridge-effect of ZnS component, which makes up for the low conductivity of MnS component and the low capacitance of Cu 2 S component, thus achieving the best synergistic effect of ternary metal sulfide 2MnS/Cu 2 S/xZnS/C( x = 1) .
研究领域:
材料科学
·
电化学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Youlin Wu,Haiyan Zhang,Youji Li,Zhiliang Jin
2D Cu 2 S snowflakes and 2D Ni-MOFs flakes were synthesized by hydrothermal method , and Ni-MOFs were calcined with sodium hypophosphite at 200 °C to form Ni-MOFs-P (Ni-MOFs/Ni 2 P). In the physical mixing process, since the -formation temperature of Cu 2 S is at 80 °C, the physical mixing temperature was controlled at 80 °C, which is advantageous for achieving a close 2D/2D contact. The results showed that 15 vol% TEOA with pH = 10 was used as sacrificent reagent under 5 W LED simulated visible light. 20 mg of EY was used as a photosensitizer . CNP60 had the best hydrogen evolution performance within 5 h, which was 3122.76 μmol g −1 h −1 . The hydrogen evolution rate of CNP60 is 8.72 fold, 3.37 fold, and 91.85 fold faster than that of Ni-MOFs, Ni-MOFs-P, and Cu 2 S, respectively. Ni-MOFs phosphating and Cu 2 S loading can reduce the photocatalyst's photogenerated electron and hole recombination efficiency. This significant improvement was achieved through XRD, SEM, TEM , XPS , UTV-Visible DRS , transient photocurrent , steady-state fluorescence, short fluorescence, related substance reporting studies, radical hydroxyl trapping, and more. The results show that the 2D/2D assembled CNP can effectively enhance the ability to reduce H∗, and a possible photocatalytic hydrogen production mechanism is proposed.
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高影响因子
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