CHEMICAL ENGINEERING JOURNAL
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2026
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IF 13.2
Huiyuan Cheng,Jingwei Hu,Shaoke Bu,Yushuang Shi,Guangping Lei
The escalating atmospheric concentration of CO 2 has intensified the demand for efficient carbon capture technologies. Here, an innovative composite adsorbent, Cu-Salophen@Cu-BTC, was successfully synthesized via an in-situ encapsulation strategy to enhance the selective adsorption of CO 2 from CO 2 /N 2 mixture. The incorporation of Cu-Salophen into the Cu-BTC framework was confirmed through XRD, ICP-OES, and FT-IR analyses. The composite exhibited a notable improvement in CO 2 uptake capacity, reaching 8.14 mmol g −1 (273 K) and 4.63 mmol g −1 (298 K) at 100 kPa, representing increases of 11.81% and 12.11%, respectively, compared to pristine Cu-BTC. Moreover, the CO 2 /N 2 separation performance was enhanced by 23.44% (273 K) and 36.06% (298 K). GCMC simulations revealed that the superior performance arises from the synergistic effects of additional adsorption affinities of CO 2 and real-time pore size regulation enabled by the mobile Cu-Salophen molecules. The composite also demonstrated excellent recyclability and improved water stability, underscoring its potential for industrial post-combustion CO 2 capture.
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APPLIED SURFACE SCIENCE
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2020
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IF 6.182
Jiaoyu Xiao,Hongdong Liu,Jiamu Huang,Yao Lu,Lei Zhang
Transition metal selenides (TMSs) are potential high-power lithium-ion batteries (LIBs) electrode materials because of its considerable theoretical capacity and high electrical conductivity. However, through the electrochemical conversion reaction, the structure of TMSs may be easily destroyed due to its terrible volume effect, which thereby greatly reducing the electrode’s capacitance and cycle life. In this paper, we have synthesized carbon-encapsulated Cu 1.8 Se decahedron nano-composites (Cu 1.8 Se@C) using a metal–organic framework Cu-BTC as template. When applied in anode for LIBs, due to the synergistic effects of tiny copper selenide, integral porous decahedron and exceptional carbon-encapsulated structure, the Cu 1.8 Se@C nano-composites exhibit improved specific capacity, superior rate capability and exceptional cycling stability. The initial discharge specific capacity of Cu 1.8 Se@C-500 °C is 1186.6 mAh g −1 at a current density of 0.1 A g −1 , and after 200 cycles, the specific capacity drops to 824.4 mAh g −1 . What’s more, at a current density of 1 A g −1 , the Cu 1.8 Se@C-500 °C electrode still possesses a considerable specific capacity of 320.3 mAh g −1 after 1000 cycles. In light of our findings, we propose a metal–organic frameworks (MOFs) templates strategy to synthesize in situ carbon-encapsulated TMSs electrode materials with outstanding electrochemical performance for LIBs.
研究领域:
材料科学
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能源存储与转换
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高影响因子
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
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2025
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IF 5.8
Wantong Wang,Shun Liu,Jiayi Li,Yimei Zhang,Xiaoze Du
The classical metal-organic framework (MOF) Cu-BTC exhibits low thermal conductivity, which causes extreme temperature distribution inhomogeneity and limits its application as a support for methanol and steam reforming (MSR) thermocatalysts. A series of GO+Cu-BTC composites were synthesized via a one-pot hydrothermal method by combining Cu-BTC with graphene oxide (GO). The effects of GO with different oxidation degrees and mass fractions on the thermal conductivity from room temperature to 200 °C and the specific surface area of the composites were analyzed comprehensively, as well as the influence mechanism of GO addition on the thermal conductivity. The results indicated that the GO-induced changes in crystals characteristics, the formation of thermal conduction pathways through GO coverage and the new spaces between GO and Cu-BTC collectively achieve the co-enhancement on thermal conductivity and specific surface area and of the composites. For the composite with the same GO mass fraction, the thermal conductivity decreased with the increasing oxidation degree of GO and for the composite with the same GO oxidation degree, the thermal conductivity firstly decreased and then increased with the increasing mass fraction of GO. The specific surface area decreases with the increasing oxidation degree of GO and the optimum oxidation degree was 0.3. GO shows a significant enhancement in specific surface area at low mass fraction but caused a sharp decrease in specific surface area with the excessive GO mass fraction. Among all the composites, the optimal 0.1 wt.%GO-0.3+Cu-BTC exhibited the highest BET and Langmuir specific surface areas of 1394.55 m 2 /g and 1939.67 m 2 /g, which were 44 % and 43 % higher than those of pure Cu-BTC and its thermal conductivity at 25 °C, 100 °C and 200 °C achieved 0.31 W/(m· °C), 0.27 W/(m· °C) and 0.31 W/(m· °C), which were 211 %, 200 % and 53 % higher than that of pure Cu-BTC, respectively. It providing novel design strategies and experimental supports for the optimization of the heat transfer performance of MOFs developed as carriers for thermal catalytic systems.
研究领域:
材料科学
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物理化学
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热催化
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纳米复合材料
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多孔材料
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RSC Advances
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2026
·Vol. 16
·期 20
·17869-17879
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IF 6.1
Ni Xiang,Suijian Qi,Jinhua Piao
A highly selective molecularly imprinted electrochemical sensor was constructed for chloramphenicol (CAP) detection based on a copper-benzenetricarboxylic acid metal–organic framework (Cu-BTC)-MOF)/graphene (Gr) composite and poly(o-phenylenediamine) (o-PD) molecularly imprinted polymer (MIP). The (Cu-BTC)-MOF exhibits extremely high porosity, adjustable pore size, a large specific surface area, and highly dispersed unsaturated metal sites. These properties enable it to provide active centers, guide the orderly growth of MIPs, or anchor functional groups, all of which are beneficial for improving the detection performance and stability of the sensor. Graphene, as a support substrate for (Cu-BTC)-MOF, can significantly improve the dispersion, structural stability and conductivity of (Cu-BTC)-MOF. o-PD serves as a functional monomer with two amino active sites, which enable hydrogen bonding or electrostatic interactions with the functional groups (such as carboxyl or hydroxyl) of target molecules, thus enhancing template-specific recognition. The aromatic ring of o-PD facilitates π–π stacking and can broaden the recognition scope. The fabricated sensor exhibits a wide detection range of 0.1 to 120 µM, a low detection limit of 0.05 µM and high sensitivity of 0.186 µA µM−1. Furthermore, it also demonstrated good selectivity, reproducibility and high stability. Moreover, the proposed molecularly imprinted electrochemical sensor was successfully used to assess the chloramphenicol content in real food samples. Therefore, this work presents a simple and efficient strategy for detecting chloramphenicol, which could aid in applying molecularly imprinted electrochemical sensors across various detection scenarios.
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PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Ning Qi,Hongchao Qi,Tianrong Xiong,Youzhou He,Qinghong Cai,Zhuoqi Liu,Panyin Wang,Yongcheng Feng,Lin Chen,Bowen Lei,Xingyan Liu
The interfacial agglomeration in photocatalysts synthesized via high-temperature methods leads to hindered charge carrier mobility, severely limiting their photocatalytic performance. Herein, we introduced a room-temperature sulfidation strategy for the fabrication of CdS/CuS heterojunctions utilizing Cu-BTC. The optimized CdS/CuS composite demonstrated an exceptional hydrogen evolution rate of 14.07 mmol·h −1 ·g −1 , which was 7.5 times greater than that of pristine CdS. The slow release of Cu 2+ from Cu-BTC at room temperature effectively inhibited interfacial agglomeration. This was further confirmed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Furthermore, the formation of a CdS/CuS type-II heterojunction was confirmed by Mott-Schottky measurements, Tauc analysis, and valence band X-ray photoelectron spectroscopy (VB-XPS) analysis. Owing to the interfacial electronic coupling of CdS/CuS, charge carrier recombination is suppressed while carrier migration and separation are accelerated, leading to a significant enhancement in the hydrogen evolution activity. This work therefore proposes a feasible room-temperature synthesis strategy for fabricating high-quality heterojunctions, which effectively suppresses interfacial agglomeration and accelerates charge carrier transfer, resulting in enhanced photocatalytic performance.
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TALANTA
·
2025
·
IF 6.1
Lijun Wang,Jiangchuan Tang,Shanshan Ren,Haixia Hu,Xiao Yang,Xianggui Chen
Although many colorimetric methods have been developed for on-site pesticide detection, most exhibit low sensitivity and limited resistance to interference. To address these issues, this study developed a novel dual-mode colorimetric-ratiometric fluorescence method for isocarbophos (ICP) detection using sulfur and nitrogen co-doped carbon nanodots (S, N-CDs) to inhibit catalytic Fe 3 O 4 @Cu-BTC nanozyme activity. The synthesized Fe 3 O 4 @Cu-BTC nanozymes with higher peroxidase-like activity were inhibited by S, N-CDs. The inhibitory mechanism was deeply investigated and was ascribed to (1) the restriction of the reaction between Fe 3 O 4 @Cu-BTC and hydrogen peroxide (H 2 O 2 ), which decreased the ·OH production, and (2) the ·OH scavenging ability of the S, N-CDs, forming the basis of the dual-mode method. The Fe 3 O 4 @Cu-BTC/Apt-complementary strand (CS)/S, N-CDs hybridization complexes demonstrated minimal to no peroxidase-like activity, preventing H 2 O 2 from oxidizing o -phenylenediamine (OPD) to produce yellow fluorescent 2,3-diaminophenazine (DAP). Meanwhile, the detection system demonstrated a low fluorescence intensity ratio (I 575 /I 465 ) at an excitation wavelength of 390 nm. However, the presence of ICP caused the CS/S, N-CDs to separate from the Fe 3 O 4 @Cu-BTC/Apt due to the high affinity between Apt and ICP. Then, the Fe 3 O 4 @Cu-BTC/Apt-ICP complexes recovered peroxidase-like activity, which promoted DAP production, accompanied by a pronounced fluorescence intensity ratio (I 575 /I 465 ). In optimum conditions, the detection limits (LODs) were 2.79 ng/mL (colorimetric) and 0.26 ng/mL (ratiometric fluorescence), respectively. The feasibility of the proposed method was verified via three spiked samples, yielding recovery rates of between 86.08 % and 112.64 %, indicating the significant potential for the highly sensitive, accurate on-site detection of ICP in actual samples.
研究领域:
分析化学
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环境科学
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生物医学
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PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2024
·
IF 5.8
Yanan Wang,Jiayu Ding,Qi Yin,Cheng Zhang,Yiqing Zeng,Song Xu,Qian Liang,Man Zhou,Zhongyu Li
This study developed a novel Cu@C/NCN-T composite for efficient photothermal catalytic CO 2 reduction. The composite, consisting of carbon-coated Cu (Cu@C) derived from Cu-BTC embedded in three-dimensional graphitic carbon nitride (NCN-T), was immobilized on the surface of carbonized wood (C-wood) floating on water, creating a triphase system (CO 2 , H 2 O, and catalyst). The optimized composite demonstrated remarkable CO 2 photothermal reduction performance, achieving a rate of 31.3 μmol·g −1 ·h −1 . This performance surpassed that of pure NCN-T and Cu@C by 1.6 and 3.8 times, respectively. The combination of Cu and carbon materials endowed Cu@C/NCN-T with excellent light-absorption properties, resulting in a photothermal effect that elevated the surface temperature and facilitated the catalytic reaction . Furthermore, the Schottky junction formed between Cu@C and NCN-T promoted the separation of electron-hole pairs, with Cu@C acting as charge channels. A charge transfer mechanism was proposed to explain these findings. This catalyst engineering approach holds promise for the development of efficient non-noble metal catalysts for rapid CO 2 photothermal reduction.
研究领域:
材料科学
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环境科学
·
化学
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高影响因子
Frontiers in Chemistry
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2020
·
IF 3.693
Zhang Qiuyun,Ling Dan,Lei Dandan,Wang Jialu,Liu Xiaofang,Zhang Yutao,Ma Peihua
In the present study, metal-organic framework Cu-BTC-supported Sn (II)-substituted Keggin heteropoly nanocomposite (Sn1.5PW/Cu-BTC) was successfully prepared by a simple impregnation method and applied as a novel nanocatalyst for producing biodiesel from oleic acid (OA) through esterification. The nanocatalyst was characterized by Fourier transform infrared spectrometry (FTIR), wide-angle X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen adsorption-desorption, thermogravimetrics (TG), and NH3-temperature-programmed desorption (NH3-TPD). Accordingly, the synthesized nanocatalyst with a Sn1.5PW/Cu-BTC weight ratio of 1 exhibited a relatively large specific surface area, appropriate pore size, and high acidity. Moreover, an OA conversion of 87.7% was achieved under optimum reaction conditions. The nanocatalyst was reused seven times, and the OA conversion remained at more than 80% after three uses. Kinetic study showed that the esterification reaction followed first-order kinetics, and the activation energy (Ea) was calculated to be 38.3 kJ/mol.
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PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Wenyan Li,Shen Chao,Yumei Li,Fuquan Bai,Yakun Teng,Xiang Li,Lijuan Li,Ce Wang
In order to prepare a kind of hemodialysis membrane with both adsorption and dialysis abilities, we prepared a novel dual-layer composite nanofiber membrane by combining two different kinds of composite electrospun nanofibers. One layer of the membrane contains specially prepared polydopamine/polyacrylonitrile (PDA/PAN) composite nanofibers modified by self-assembly of Cu-BTC on the surface of the nanofibers, which exhibit good adsorption capacity for urea. The second layer of the membrane contains biopolymers of chitosan/sericin (CS/SS) composite nanofibers, which show a good adsorption capacity for creatinine. The obtained dual-layer nanofiber membranes possess excellent blood compatibility. The maximum adsorption capacity of the dual-layer composite nanofiber membrane for creatinine is 100.50 mg/g, and the maximum adsorption capacity for urea can reach as high as 152.44 mg/g. In addition, a multi-layer flat-plate dialyzer was designed and manufactured for dialysis process. The prepared nanofiber membranes were used as a hemodialysis membrane for simulated dialysis tests. After 4 h of dialysis, the retention rate of bovine serum albumin (BSA) of the composite nanofiber membrane is 83.9%, the clearance rates on creatinine and urea are 82.3% and 92.8%, respectively. The prepared novel dual-layer membranes have the capacity to be utilized as a new adsorbent for hemodialysis applications.
研究领域:
生物医学工程
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材料科学
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肾脏病学
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