Sustainable Energy & Fuels
·
2025
·
IF 4.1
Anran Zhu,Zhufan Zou,Ai-Qin Wang,Cong Yu,Yinghua Yin,Ning Li
2,5-Bis(furan-2-ylmethyl)cyclopentan-1-one (FCFDH), a C15 precursor for renewable jet fuel range cycloalkane and high-value electronic photolithography material, was selectively synthesized via a cascade aldol condensation/hydrogenation reaction of furfural and cyclopentanone under solvent-free conditions. Non-noble metal Cu and Ni modified MgAl-hydrotalcite (Cu-Ni/MgAl-HT) was found to be an effective and stable catalyst for this reaction. Under the optimized conditions (423 K, 4 MPa H₂, 10 h), 97.0% cyclopentanone conversion and 82.0% carbon yield of FCFDH were achieved. Based on the characterization results, the presence of Ni and Cu species increased the acidity of MgAl-HT and formed Ni-Cu alloy particles with an average size of 2.33 nm during the preparation of catalyst. Both effects facilitate the aldol condensation of furfural and cyclopentanone and the formation of FCFDH by the selective hydrogenation of C=C bond.
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Yuwen Pan,Guoning Ji,Boyao Zhang,Xin Li,Yongqi Tian,Shuangshuang Zhang,Depeng Zhao,Rongda Zhao,Fufa Wu,Lihua Miao
Electrocatalytic technology serves as a critical pathway for clean energy conversion, where high-entropy alloys demonstrate outstanding catalytic performance owing to their unique multi-principal-element design. This work systematically investigates Cu x (CoCrNiFe) 100-x HEAs as cost-effective bifunctional catalysts for both freshwater and seawater electrolysis. The optimized Cu 50 (CoCrNiFe) alloy exhibits excellent catalytic activity with low overpotentials of 248.3 mV for HER and 327 mV for OER at -10 mA cm -2 in alkaline freshwater, along with remarkable stability (<5% decay after 24 hours). Notably, in alkaline seawater electrolyte, it achieves even better HER performance (234 mV) while maintaining comparable OER activity, and demonstrates exceptional 50-hour durability in overall water splitting tests. These findings not only provide new insights into HEA-based catalyst design but also highlight the great potential of such materials for practical large-scale hydrogen production from seawater resources, representing a significant step toward sustainable energy solutions.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yuxi Yang,Xiaojing Liang,Liang Ma,Min Chen,Limin Wu
Rainwater is a clean and abundant energy source, and the liquid–solid triboelectric nanogenerator (LS-TENG) has emerged as a promising technology for harvesting and converting raindrop energy into electricity. Despite its potential, practical applications of LS-TENG have been limited by its low output performance and complex fabrication processes. Herein, we propose a simple and efficient strategy for constructing high-performance LS-TENG by introducing a novel composite triboelectric layer composed of poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) doped with SiO2@Cu and 1H,1H,2H,2H-perfluorooctyltriethoxysilane. This design simultaneously enhances the dielectric constant and hydrophobicity of the triboelectric coating through a polarization effect and surface tuning. As a result, the LS-TENG achieves an excellent output voltage of 19 V and a current of 6.7 μA from a single waterdrop, corresponding to 2.5 and 2.8 times those of undoped PVDF-HFP, and can successfully power small electronic devices. Furthermore, the entire LS-TENG, including both the triboelectric and electrode layers, is fabricated via facile, in situ coating processes, offering good scalability, substrate adaptability, and optical transparency. Therefore, this work integrates material-level output enhancement with process-level simplicity, holding great potential for practical applications in droplet energy harvesting.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Macromolecular Science Part B-Physics
·
2016
·
IF 0.62
Shaoping Yang,Shiyu Fu,Juanjuan Liu,Yiming Zhou
Hydrogels based on cellulose-graft-poly (acrylic acid) copolymers (C-g-AA) were synthesized by graft copolymerization in a phosphoric acid solvent. Fourier transform infrared (FT-IR) spectra confirmed the structure of the C-g-AA. The adsorption behaviors of the hydrogels for Cu(II) and Ni(II) were investigated. The results showed that their adsorption capacity increased as the initial concentrations of metal ions and the pH value of the solution increased. Freundlich and Langmuir isotherm models were employed to analyze the data from batch adsorption experiments. The results indicated that there were very good correlation coefficients for their linearized equations. The maximum adsorption amounts of the hydrogels for the metal ions, based on the Langmuir model, were 182 and 200 mg/g for Cu(II) and Ni(II), respectively. When the initial concentration of metal ions was 1000 mg/g the actual adsorption amounts of the hydrogels for Cu(II) and Ni(II) were 181 and 183 mg/g, respectively.
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2016
·
IF 3.014
Yakun Chen,Xiang Zhang,Enzuo Liu,Chunnian He,Yajing Han,Qunying Li,Philip Nash,Naiqin Zhao
In this study, a Cu matrix composite is synthesized reinforced by an in-situ three-dimensional graphene network (3D-GN) grown through chemical vapor deposition (CVD). Nano Cu powders and polymethylmethacrylate (PMMA) are employed as matrix and carbon source respectively. PMMA is dispersed on Cu powders after ball-milling. During the CVD process , carbon atoms from pyrolyzed PMMA diffuse and precipitate on Cu powders. By inheriting the morphology of Cu powders, carbon atoms build a 3D-GN in-situ on Cu powders. A bulk 3D graphene/composite with 0.5 wt% graphene is obtained by vacuum hot-press sintering. The favorable interfaces that crucial to the achievement of exceptional mechanical properties of a bulk composite are verified by TEM and SEM characterizations. A yield strength and tensile strength of 290 MPa and 308 MPa respectively are achieved of the composite. The structure of 3D-GN is well preserved in the bulk composite. We demonstrate that the 3D-GN serves as an effective obstacle to the propagation of dislocations by TEM further.
✓ 已验证
DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Rong Ping Chen,Lei Yu,Cao Xing Huang,Chen Huan Lai,Ting Ting Ma,Zi Shuai Zhang,Qiang Yong
Magnetic humic acid nanoparticles (MHA) was prepared via coprecipitation method. Adsorptive removal of methylene blue (MB) and Cu(II) by MHA in single-component and binary systems was studied, respectively. MHA showed highly removal efficiency to MB and Cu(II). The adsorptions of MB and Cu(II) on MHA were pH dependent with uptake dropping in acidic solutions. The adsorption mechanisms of MB and Cu(II) were also different. MB is adsorbed via two mechanisms: π–π interactions and ion exchanging, while Cu(II) only involves ion exchanging. It was also proved that MHA can selectively remove MB in acidic solutions. The adsorption equilibrium and kinetic study indicated that the adsorption of MHA was in agreement with Langmuir model and pseundo-second-order model, respectively. Furthermore, MHA could be easily regenerated and reused with almost no loss of adsorption capacity. Overall, MHA is an efficient and versatile adsorbent for Cu(II) and MB.
✓ 已验证
DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Peifei Ding,Weifeng Song,Chao Wang,Zefeng Yu
Metakaolin-based geopolymer was investigated as absorbent to remove Cu(II) and Pb(II) from aqueous solution. The effects of adsorbent quantity, pH, contact time, and initial concentration of Cu(II)/Pb(II) in solutions were investigated. Furthermore, kinetics and isothermal adsorption were fitted by using equations. Kinetic adsorption of Cu(II) and Pb(II) fitted well to pseudo-second-order model. The isothermal adsorption of two heavy metals by the metakaolin-based geopolymer fitted well with Langmuir isotherm adsorption model. The maximum monolayer adsorption capacities were found to be 178.6 mg/g (2.79 mmol/g) and 312.5 mg/g (1.51 mmol/g) for Cu(II) and Pb(II), respectively. Results clearly showed that the adsorption of metal ions on geopolymer was accompanied by ion exchange. Low-cost, convenient, and effective adsorption of Cu(II) and Pb(II) make metakaolin-based geopolymers potential candidates for heavy metal removal in wastewater treatment.
✓ 已验证
DOI
高影响因子
Small
·
2023
·Vol. 19
·期 52
·2304718
·
IF 13.3
Zhi Li,Zhengyang Zhou,Jiawei Zhang,Chenxi Zhu,Pengfei Qiu,Tingting Deng,Fangfang Xu,Lidong Chen,Xun Shi
Materials with low thermal conductivity have received significant attention across various research fields, including thermal insulation materials, thermal barrier coatings, and thermoelectric materials. Exploring novel materials with intrinsically low thermal conductivity and investigating their phonon transport properties, chemical bonding, and atomic coordination are crucial. In this study, a novel ternary sulfide is successfully discovered, Cu 2 ZrS 3 , which is achieved by introducing copper ions into both the interlayer and intralayer of ZrS 2 . The resulting structure encompasses various coordination forms within each layer, such as [CuS 4 ], [ZrS 6 ], and [CuS 3 ], leading to pronounced phonon anharmonicity induced by the asymmetric bonding of tri-coordinated Cu atoms within the [ZrS 6 ] layer. As a result, Cu 2 ZrS 3 exhibits intrinsically low lattice thermal conductivity ( κ L ) of about 0.83 W m −1 K −1 at 300 K and 0.35 W m −1 K −1 at 683 K, which are in the exceptionally low level among sulfides. In comparison to the conventional approach of inserting guests between layers, the substitution of atoms within layers provides a novel and effective strategy for designing low κ L materials in transition metal dichalcogenides (TMDCs).
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Yuncong Li,Jianing Li,Ying Zhang
Cu on HAP aggregates then redisperses non-monotonically upon reduction. • Reconstructed interface stabilizes Cu 0 /Cu + and HPO 4 2- units. • Interfacial synergy drops E a from 88.1 to 69.3 kJ/mol, sharply enhancing activity. • H 2 reaction order drops from 1.20 to 0.25 after interfacial reconstruction. • DFT unveils Cu dissociating H 2 and adjacent Ca polarizing the carbonyl group. Constructing non-noble-metal hydrogenation catalysts with high activity, chemoselectivity, and durability under mild conditions is a key challenge in biomass valorization. While strong metal–support interactions on hydroxyapatite (HAP) typically involve noble metals via oxidative pathways, we report a reduction-induced interfacial reconstruction for Cu-HAP. During temperature-programmed reduction, Cu shows non-monotonic evolution: aggregation then redispersion into an anchored state at 600 °C, bypassing sintering. Spectroscopic and DFT reveal that HAP retains long-range order, while the Cu–HAP boundary stabilizes Cu 0 /Cu + and HPO 4 2- , enabling cooperative H 2 dissociation and carbonyl polarization. The optimized catalyst achieves quantitative furfural conversion with > 99% furfuryl alcohol selectivity (80 °C, 1.5 MPa H 2 ). Kinetic benefits include decreased E a (88.1→69.3 kJ/mol) and shifted H 2 order (1. 2 0→0.25). The catalyst also maintains stable performance over five cycles with negligible leaching. These findings highlight the distinctive role of HAP's Ca–PO 4 –OH environment in reduction-induced Cu redistribution and interfacial reconstruction, providing new insights into the design of cooperative metal–support interfaces for selective hydrogenation. Download: Download high-res image (248KB) Download: Download full-size image Temperature-programmed reduction induces non-monotonic redispersion of Cu on hydroxyapatite, producing a reconstructed interfacial boundary with stabilized Cu 0 /Cu + and HPO 4 2- species. DFT indicates cooperative catalysis at this interface: Cu activates H 2 while adjacent Ca polarizes the carbonyl group. The decrease in apparent activation energy (88.1–69.3 kJ/mol) and the shift in H 2 reaction order (1.20–0.25) underlie the quantitative furfural conversion and > 99% furfuryl alcohol selectivity achieved under mild conditions (80 °C, 1.5 MPa H 2 ).
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Chao Li,Pengfei Zhao,Bo Ma,Dongxuan Xie,Xiaofei Liu,Songhan Hu,Yingchun Diao,Kai Wang,Yonghui Ma,Qiang Wang
Red-emissive Cu nanoclusters were synthesized via a green room-temperature strategy using glutathione and ascorbic acid. • Zn 0.4 Mn 0.6 Fe 2 O 4 nanoparticles were selected as the magnetic component owing to their superior magnetic properties over conventional Fe 3 O 4 . • Cu nanocluster-decorated Zn 0.4 Mn 0.6 Fe 2 O 4 nanocomposites were successfully fabricated through a simple assembly process. • The optimized nanocomposite integrated bright red fluorescence with excellent T 2 -weighted magnetic resonance performance. • A green and low-cost strategy was developed for constructing multifunctional fluorescence/MR nanocomposites. Given the intrinsic limitations of single-modality imaging, integrating optical and magnetic functionalities into a single nanoplatform offers a promising strategy for multimodal imaging. Herein, Cu nanocluster-decorated Zn 0.4 Mn 0.6 Fe 2 O 4 nanocomposites (CuNCs-ZMF) were rationally fabricated for dual-modal fluorescence and magnetic resonance imaging. Glutathione-protected CuNCs were synthesized using ascorbic acid as a mild reductant, while superparamagnetic Zn 0.4 Mn 0.6 Fe 2 O 4 nanoparticles were synthesized via thermal decomposition and subsequently surface-functionalized with cetyltrimethylammonium bromide to improve aqueous dispersibility and facilitate assembly with CuNCs. The resulting CuNCs-ZMF exhibited red fluorescence centered at 660 nm with an absolute quantum yield of 5.89% and a transverse relaxivity ( r 2 ) of 160.52 mM −1 s −1 . T 2 -weighted MR imaging demonstrated Fe concentration-dependent negative contrast enhancement, while in vivo imaging revealed pronounced darkening of the liver region following intravenous administration. CCK-8 assays further demonstrated relatively favorable cytocompatibility at low-to-moderate concentrations. These results demonstrate the successful integration of fluorescence and magnetic resonance imaging capabilities and support the potential of CuNCs-ZMF for fluorescence/MRI dual-modal imaging applications.
✓ 已验证
DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2025
·
IF 4.6
Jiangnan Chen,Zhouchao Wang,Lin Xu,Huifang Wang,Xianghua Gao,Baolong Niu,Wenfeng Li
In the realm of glucose detection, nickel-based and copper-based nanocomposites have garnered significant attention due to their exceptional catalytic performance and high sensitivity. This study realized linear detection across dual concentration ranges in alkaline media by in situ growing Ni/Cu-BTC spherical nanocatalysts on reduced graphene oxide (rGO). From 350 μM to 2.95 mM, with a low detection limit (LOD L ) of 21.7 μM (S/N = 3) and a sensitivity (S L ) of 40 nA mM −1 cm −2 ; from 2.95 mM to 9.45 mM, the high-concentration detection limit (LOD H ) is 1.1 mM (S/N = 3), with an improved sensitivity (S H ) of 165.7 nA mM −1 cm −2 . The response time (t) is under 2 s. Additionally, the sensor demonstrated robust interference resistance, excellent stability (%RSD = 3.57 %), repeatability (%RSD = 2.27 %), and reproducibility (%RSD = 2.34 %). In real-world sample testing, this sensor measured glucose concentrations in plasma from healthy individuals both on an empty stomach and half an hour after eating, with a relative standard deviation range of 0.94 %–2.33 %. These results suggest that the rGO-Ni/Cu-BTC composite is a promising enzyme-free electrochemical sensing material for glucose detection
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Dongfeng Sun,Yu Kang,Junwei Wang,Luo Huang,ShuKai Ding,Guohui Dong,Yanning Qu,Yuan Yu
Ammonia synthesis via photocatalytic nitrogen fixation is regarded as a green and sustainable alternative to the conventional Haber-Bosch process. Nevertheless, its practical application is greatly hindered by the chemically inert N N triple bonds and slow reaction kinetics. In this work, a Cu-doped TiO 2 /g-C 3 N 4 composite with a well-defined type-II heterojunction was synthesized through a facile wet-chemical method integrating low-temperature crystallization and in-situ molecular assembly. Characterizations confirm that Cu-TiO 2 nanoparticles are evenly immobilized on g-C 3 N 4 nanosheets, which effectively suppresses nanoparticle aggregation. On the one hand, Cu doping tunes the band structure of TiO 2 and introduces abundant oxygen vacancies, greatly promoting the adsorption and activation of N 2 molecules. On the other hand, the formed type-II heterojunction establishes an internal electric field, which broadens light response and accelerates the separation and migration of photogenerated charge carriers. Benefiting from the synergistic effect of Cu doping, oxygen vacancies and type-II heterojunction, the optimal Cu-TiO 2 /g-C 3 N 4 (CuTCN-2) achieves an outstanding NH 3 evolution rate of 91.14 μmol·g −1 ·h −1 with a quantum yield of 1.75% at 420 nm under simulated solar illumination. The activity is 7.6-, 3.4- and 34.1-fold higher than that of bare TiO 2 , single Cu-TiO 2 and pristine g-C 3 N 4 , respectively. This work reveals that the co-regulation of heteroatom doping, defect engineering and heterojunction construction can remarkably boost photocatalytic kinetics. It also provides a feasible design principle for high-performance photocatalysts toward solar-driven nitrogen fixation.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）