INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2024
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IF 3.8
Tianci Zheng,Yanfei Zhu,Rui Ma,Liguang Bai,He Yu,Shixi Zhao,Yufei He,Yanan Liu,Dianqing Li
Hydrogenation of unsaturated C≡C groups is a promising way to realize ethylene purification in petrochemical processes and produce value-added products. Gold catalysts are known to exhibit satisfactory selectivity toward olefins. However, it still remains a grand challenge to improve the activity and inhibit the heavy coke effect while balancing the selectivity. This article describes the construction of Cu vacancies at an abrupt surface over a Au–Cu alloy catalyst to effectively promote the activation and dissociation of hydrogen, thereby reducing the activation energy barrier. More importantly, the generation of abundant Cu vacancies contributes to the electronic interaction with the adjacent second metal to generate coordination unsaturated and electron-deficient Au species, which facilitates the desorption of product intermediates. Consequently, the activity and selectivity of the acid-etched Au3Cu1/TiO2 are much higher than those of the untreated Au–Cu and monometallic Au catalysts. This report opens up promising possibilities for engineering highly efficient heterogeneous gold catalysts.
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Journal of Energy Chemistry
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2024
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IF 14
Yuan Zhuang,Kaixuan Wei,Zhenxing Li,Hanzhang Gong,Jianan Deng,Haozhong Yuan,Haoyu Lian,Hao Zheng,Honghao Zhao,Xiao Zhang,Jian Liu
Designing the coordination environment of heteroatoms around metal sites and optimizing the electronic structure of diatomic metal sites remain significant challenges in achieving efficient CO 2 overall splitting. Herein, we report four configurations (Cu/Ni–N 4 C 2 , Cu/Ni–N 2 C 4 , Cu/Ni–N 2 C 3 and Cu/Ni–N 2 C 2 ) constructed by precise regulation of the coordination environment around bimetallic atoms. Cu/Ni–N 2 C 2 showed high performance in electrochemical CO 2 reduction (ECR) and water oxidation evolution reaction (OER). In the electrochemical CO 2 overall splitting reaction, it achieved a Faraday efficiency of CO (FE CO ) of 98.0% at a low cell voltage of −2.9 V, significantly higher than widely reported values. Moreover, the FE CO is above 90% over −2.7 to −4.1 V of cell voltages. Cu/Ni–N 2 C 2 achieved long-term ECR stability of 110 h at −100 mA cm −2 . Mechanism studies revealed that the change of coordination environment around the diatomic pairs moves the d-band center of the Ni atom closer to the Fermi level, thereby modulating the adsorption capacity of the catalysts to the reaction intermediates *COOH and *O. This work presents valuable insights into the rational design of diatomic catalysts and elucidates the intricate structure-performance relationship in advancing electrochemical CO 2 overall splitting technology and energy-conversion applications.
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Surfaces and Interfaces
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2025
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IF 6.3
Zhao-Yun Wang,Xin Zhao,An-Ni Zheng,Lei Jin,Jia-Qiang Yang,Jun-Yang Liu,DongPing Zhan,Da-Quan Yu,Fang-Zu Yang,Shi-Gang Sun
Metallization of micro through silicon via (TSV) is vital in 3-dimensional integration of chips and high-density printed circuit boards. As the diameter decreases and aspect ratio increases, realizing a uniform copper seed layer inside TSV becomes increasingly challenging by using traditional techniques of high-cost physical vapor deposition (PVD) and chemical vapor deposition (CVD). Cu electroless deposition (Cu-ELD) is a promising technique for growing a conductive seed layer on the wall of TSV, and promotes the completion of metallization of micro TSV following by Cu electroplating. In the current study, an advanced method is developed to form Cu seed layer on micro TSV by Cu-ELD catalyzed through Ag nanoparticles. The Ag nanoparticles are synthesized using gallic acid as the reducing agent (denoted as GA-Ag NPs). Ultraviolet–visible absorption spectroscopy and transmission electron microscopy are applied to study the mechanism of conformal Cu-ELD catalyzed by GA-Ag NPs, and results demonstrate that all Ag ions are reduced to spherical Ag NPs of 9.7 nm in average size. Electrochemical tests and finite element simulation illustrate that the high catalytic activity of GA-Ag NPs facilitates Cu-ELD to achieve an effective conformal deposition in TSV. The obtained continuous and uniform Cu seed layer enables the void-free filling of TSV ultimately by Cu electroplating. An in situ XRD device is designed and built up for investigation of Cu-ELD process, which reveals that the Cu layer catalyzed by GA-Ag NPs during growth is stable and exhibits a mixed crystalline structure with texture coefficient ( TC ) values of Cu (220) and Cu (311) close to and higher than 25 %.
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DALTON TRANSACTIONS
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2024
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IF 3.5
Na Lin,Yun-Xia Li,Yu Liu,Kai-Qi Sun,Hong-Yan Zhang,Xiao-Wu Lei,Zhi-Wei Chen
Low-dimensional organic–inorganic hybrid lead halide perovskites have attracted much interest in solid-state lighting and displays, but the toxicity and instability of lead halide are obstacles to their industrial applications, which must be overcome. As an alternative, Cu(I)-based hybrid metal halides have emerged as a new type of luminescent material owing to their diversified structure, adjustable luminescence, low toxicity and low cost. Herein, we report three one-dimensional (1D) hybrid Cu(I)-based halides with the general formula ACu2Br4 (A = [(Me)4-Pipz]2+ and [BuDA]2+ and [TMEDA]2+). These 1D hybrid Cu(I) halides display stable broadband blue emission with maximum emission peaks in the range of 445–474 nm and the highest photoluminescence quantum yield of 37.8%. Furthermore, in-depth experimental and theoretical investigations revealed that the broadband blue emissions originate from the radiative recombination of self-trapped excitons. Most importantly, there is no structural degradation and attenuation of emission intensity even after continuously soaking these halides in water for at least two months, demonstrating their ultra-high anti-water stability. Hirshfeld surface analysis shows that a large number of weak hydrogen bonds can protect the inorganic skeleton from degradation due to water. This work provides a new strategy for the design of water-stable Cu(I)-based halides with efficient blue emission and wide potential applications in humid environments.
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PubMed
高影响因子
ANALYTICA CHIMICA ACTA
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2024
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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.
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PubMed
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Journal of Materials Chemistry A
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2025
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IF 9.5
Shuai Liu,Dicka Ar Rahim,Yan Zhang,Dan Wang,Ekkachai Kanchanatip,Yi He,Mi Yan
To advance the utilization of high-concentration CO2 produced in biogas upgrading, it is essential to remove associated hydrogen sulfide (H2S). This study presents a series of bimetallic Fe–Cu oxides supported on multi-walled carbon nanotubes (MWCNTs), which were synthesized to efficiently remove H2S from CO2-rich gas at low temperatures. The synergy of the bimetallic elements not only forms a multifaceted active phase but also causes new defects on the MWCNTs, creating more H2S/CO2 separation sites. The adsorption experiments demonstrate that the deep H2S removal performance of the adsorbent is unaffected by the CO2 concentration, achieving a maximum adsorption capacity of 30.11 mg g−1, which exceeds that of commercial desulfurizers and previously reported adsorbents. Additionally, density functional theory calculations were employed to elucidate that the introduction of Cu species increases the gap in the average adsorption energies between H2S and CO2. The adsorbent also exhibited stability after 4-cycle regeneration at room temperature, maintaining 62.6% of its initial H2S capacity. This work underscores the potential of Fe–Cu oxide/MWCNTs adsorbents as a viable, regenerable solution for H2S removal in CO2 purification, offering implications for carbon-negative construction.
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MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Xin Ban,Jiamu Li,Wenwen Sun,Aijia Sun,Huayi Li,Zhengchun Yang,Peng Pan,Jie He,Rui Zhang,Yang Zhao
A highly sensitive non-enzymatic glucose electrode based on truncated octahedral CuO-modified Cu 2 O@Cu composite was fabricated by a simple hydrothermal method combined with a two-step liquid-phase reduction process. Research on utilizing nanostructures to increase the contact opportunities between electroactive materials and target analytes, thereby enhancing electrocatalytic activity, is currently insufficient. In this study, we employed a reduction method to create a core–shell structure with copper shells encapsulating internal nanomaterials. This structure was designed to provide more active sites for glucose molecules, thereby enhancing the electrocatalytic response current of glucose. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to characterize the morphology and components of the products obtained from each step, while the CuO/Cu 2 O@Cu ternary composites were specifically analyzed using transmission electron microscopy (TEM). For glucose detection, CuO/Cu 2 O@Cu composite was modified onto a glassy carbon electrode (GCE) as a working electrode for electrochemical performance testing. The cyclic voltammetry (CV) test results indicate that the CuO/Cu 2 O@Cu-GCE electrode exhibits a sensitivity of 771 μA cm −2 mM −1 within the glucose concentration range of 0 to 10 mM, with a detection limit of 3.39 μM. Chronoamperometry (CA) results demonstrate that the electrode achieves a sensitivity of 1067 μA cm −2 mM −1 in the glucose concentration range of 0 to 1 mM, with a detection limit of 0.56 μM. Exhibiting a broad linear response range, high sensitivity, minimal detection limit, and robust selectivity against common interferents, the electrode maintained 99 % stability over four days and retained more than 85 % of its current response for two weeks, also showing notable sensitivity in artificial sweat samples. Owing to its simple fabrication, cost-effectiveness, and outstanding electrochemical properties, the CuO/Cu 2 O@Cu composite offers significant potential for application in non-enzymatic glucose sensing.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2024
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IF 20.2
Tianyi Wu,Jiaxuan Chen,Lingyue Liu,Xiaolei Qu,Shourong Zheng,Dongqiang Zhu
Electrochemical reduction of nitrate to ammonia (NH 3 ) provides an attractive approach to accomplish resource utilization of pollutants, while exploring efficient catalysts with high catalytic activity and NH 3 FE at low applied potentials remains great challenging. Herein, we constructed a three-dimensional Cu 3 P/Cu catalyst and studied its catalytic performances in electrochemical nitrate reduction reaction . The Cu 3 P/Cu catalyst with finely balanced metallic Cu and Cu 3 P sites exhibits a high NH 3 yield of 4.27 mg h −1 cm −2 after 1 h reaction at a low applied potential (-0.05 V vs RHE), outperforming most of previously reported Cu-based catalysts. DFT calculations demonstrate the favored reduction of nitrate to nitrite on metallic Cu and hydrogenation of nitrite to NH 3 on Cu 3 P. This study opens up new opportunities for the application of Cu 3 P/Cu catalyst as a robust tandem electrocatalyst in the large-scale production of NH 3 through electrochemical reduction with low energy consumption.
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Ning Liu,Na Lu,Kun Zhao,Pengxiao Liu,ZhuMei Sun,Jing Lu
The conversion of methane (CH 4 ) and carbon dioxide (CO 2 ) into high-value products under mild conditions is crucial for addressing the greenhouse effect and advancing C1 chemistry. In this study, Cu/ZnO catalysts were prepared through a one-step wet reduction process, and the catalytic conversion of CH 4 and CO 2 into acetic acid molecules (CH 3 COOH) was achieved via photon activation at ambient temperature. The yield of acetic acid was 411.6 μmol/Lg cat −1 h −1 with a selectivity of 89.5 % under optimal conditions (100 mWcm −2 light intensity, 25 ± 2 °C, 2 MPa pressure, and a 1:1 CH 4 :CO 2 volume ratio). Enhanced solubility of CH 4 in aqueous under increased pressure and temperature was observed to improve acetic acid production. Additionally, the catalytic mechanism involved surface chemisorption of CH 4 and CO 2 , facilitated by ZnO and Cu in the catalyst, leading to C-C coupling and subsequent acetic acid formation, driven by photogenerated electron-hole migration. This study provides a foundational understanding for the synthesis of value-added chemicals through CH 4 and CO 2 conversion via C-C coupling in mild environments.
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Journal of Water Process Engineering
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2024
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IF 6.3
Chuangbin Hong,Jiehang Zhou,Wenguang Wang,Liangpeng Wu,Shimin Long,Wentao Zhou,Yuxi Guo
Catalytic activation of peroxymonosulfate (PMS) is one of the important research areas in the development of advanced oxidation technology for wastewater treatment. At present, the development of high-performance catalysts for PMS activation has become a research hotspot. Herein, (Cu + decorated g-C 3 N 4 )/Bi 2 WO 6 ((Cu + /g-C 3 N 4 )/Bi 2 WO 6 ) composite was prepared successively by calcination and solvothermal method, which was used in visible light-assisted PMS activation for the degradation of rhodamine B (RhB). The construction of S-scheme heterojunctions between Cu + decorated g-C 3 N 4 and Bi 2 WO 6 facilitated the activation of PMS, leading to a RhB degradation ratio of 98.46 % within 50 min. The corresponding reaction kinetic was significantly improved by a factor of 2.32 and 7.94 compared with that of CCN and BWO, respectively. The enhanced performance of the (Cu + /g-C 3 N 4 )/Bi 2 WO 6 can be attributed to the successful construction of S-scheme heterojunction, which facilitates the separation of photogenerated carriers and accelerates the PMS activation to produce abundant active species. Furthermore, the (Cu + /g-C 3 N 4 )/Bi 2 WO 6 composites exhibit strong stability and reusability following three cycles. In addition, the intermediates produced during the RhB degradation process were investigated by liquid chromatograph mass spectrometer (LC-MS). This study provides a new insight into the preparation of S-scheme photocatalysts for the photocatalytic-PMS activation system that will achieve efficient removal of dyes from wastewater.
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Journal of Energy Chemistry
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2025
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IF 14.9
Wenhui Fu,Yuxuan Tian,Chao Sui,Xiaorui Wang,Zhi Wang,Qiushi Chen,Junhao Liu,Xuzhong Gong
Polymer binders possess significant potential in alleviating the volume expansion issues of silicon-based anodes, yet remain challenging due to insufficient interfacial interactions with individual components (Si, C, and Cu) of the anode. Herein, we report the synthesis of a stable three-dimensional network structure of the PAA-PEA (polyacrylic acid-polyether amines) polymer binder through intermolecular physicochemical dual cross-linking. By incorporating polar functional groups, the binder molecules not only form strong C–O–Si, N–Si, O=C–O–C, and O=C–O–Cu covalent bonds but also enhance non-covalent interactions with Si, C, and Cu, thereby improving adhesion between the binder and each interface of the anode. Furthermore, weak hydrogen bonds, acting as “sacrificial bonds”, dissipate energy and disperse accumulated stress, improving the material flexibility. Due to the high mechanical stability of the framework, which combines both rigidity and flexibility and the coupling effect at the three interfaces, the movement and separation of electrode components are effectively restrained, significantly enhancing the cycling stability of silicon-graphite anodes. The PAA-PEA 2000 electrode exhibits a capacity retention of 78% after 500 cycles at a current density of 0.2 A g −1 . This work provides insights into the mechanism of binders and guides the design of polymer binders for high-performance Si-based electrodes.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Shihao Xiong,Tao Peng,Liangliang Huang,Rui wang,Beibei He,Jun Jin,Huanwen Wang,Yansheng Gong
Semiconductor photocatalytic nitrogen reduction reaction (PNRR) stands as a promising clean technique for ammonia synthesis, yet it confronts numerous challenges. In this study, Ag nanoparticle-modified Cu-doped Bi 2 WO 6 (ACB) porous composite materials with varying mass percentages were successfully synthesized using a solvothermal reduction approach. The incorporation of transition metal Cu effectively modulates the energy band position of Bi 2 WO 6 . Furthermore, the introduction of Ag nanoparticles significantly suppresses the recombination of photogenerated carriers. Without adding sacrificial agent, the photocatalytic nitrogen fixation yield of ACB reaches an impressive 184.93 μmol·g −1 ·h −1 , which is 5.44 times higher than that of pristine Bi 2 WO 6 . A comprehensive analysis of the experimental results reveals that the combined effect of Cu doping and Ag nanoparticle loading endows ACB with an increased exposure of active sites, thereby significantly enhancing its photocatalytic nitrogen fixation performance. This research offers a promising approach for the design of metal nanoparticle-supported catalysts for PNRR, holding significant implications for the advancement of other material systems.
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