FUEL
·
2019
·
IF 5.128
Weijie Geng,Wenxiu Li,Lin Liu,Junhai Liu,Liying Liu,Xiangjin Kong
The hydrodeoxygenation of furfural to 2-methylfuran is of great significance for biomass valorization. However, the design of efficient catalysts based on non-noble metals is still a huge challenge for this transformation. In this work, a uniformly dispersed Cu-Cu 2 O/N-RGO nanocomposite was assembled via microwave assisted reduction and ammonia evaporation synthetic strategy. Under the optimum conditions, the yield of 2-methylfuran reached 95.5%, and there was no catalyst deactivation was observed within 5 cycles. The characterization results confirmed that the activity of the catalyst was mainly attributed to the synergistic effects of surface Cu 0 and Cu + species in catalyst, which were originated from partial reduction of CuO species due to the strong interaction between Cu precursors and support. Furthermore, this strong interaction also promised stability of the catalyst which could immobilize copper particles to resist leaching.
研究领域:
化学工程
·
催化材料
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2025
·
IF 7.2
Xiulan Shui,Shuangqiang Fang,BenLe Dou,Tianchun Lang,Haoliang Cheng,Jiaqi Ou,Zhou Zhou,Xuan Liu,Le Wang
Development of efficient sunlight conversion materials is critical for advancing sustainable agricultural practices, but current solutions often face challenges such as poor stability, high cost, and reliance on rare-earth elements. This study presents a rare-earth-free xCsMnCl 3 (H 2 O) 2 /(1−x)Cs 3 SbCl 6 heterojunction ( x = 1−0.65) synthesized via an eco-friendly mechanochemical method. By strategically combining Cs 3 SbCl 6 as a UV-absorbing donor with CsMnCl 3 (H 2 O) 2 as an efficient red emitter. The optimized heterojunction achieves a remarkable 36-fold enhancement at 626 nm (Full width at half maxima (FWHM) = 88 nm), perfectly matching chlorophyll a's absorption spectrum. Comprehensive experimental and theoretical analyses, including UV–vis absorption, photoluminescence (PL) spectroscopy, and density functional theory (DFT) calculations, reveal a dual enhancement mechanism: i) efficient interfacial electron-hole transfer and ii) suppression of non-radiative recombination through defect passivation. The practical application is demonstrated through a sunlight conversion film fabricated by embedding the 0.75CsMnCl 3 (H 2 O) 2 /0.25Cs 3 SbCl 6 composite in Ecoflex-0030, which exhibits exceptional environmental stability (90% PL retention after 90 days) and mechanical durability (500% tensile strain). The plant growth experiments confirm the film's agricultural efficacy, with chives and green cabbage growth rates increasing by 1.5- and 1.3-fold, respectively, compared to natural light conditions. This work not only addresses the limitations of existing light-conversion materials but also establishes a rare-earth-free, eco-friendly platform for energy-efficient agriculture.
研究领域:
材料科学
·
农业科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2021
·
IF 6.165
Yuwei Zuo,Yue Sun,Wenzhong Yang,Kegui Zhang,Yun Chen,Xiaoshuang Yin,Ying Liu
The performance and mechanism of typical scaling inhibitors, i.e., 1-hydroxy ethylidene-1,1-diphosphonic acid (HEDP) and 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA), in inhibiting calcium carbonate scaling were investigated. Results of the static experiment at 30 °C and 80 °C revealed that at the optimal concentration, the scaling inhibition efficiency of PBTCA was superior to that of HEDP. Additionally, X-ray powder diffraction evaluation demonstrated that in comparison with HEDP, PBTCA inhibited the growth of the (1 0 4) crystal plane of calcite more evidently. Scanning electron microscopy analysis indicated that the addition of scaling inhibitors induced the crystal transformation of CaCO 3 from calcite to aragonite. Molecular dynamics simulation also confirmed that the interaction of PBTCA with the (1 0 4) crystal surface of calcite is more apparent than that of HEDP. This observation was a consequence of the PBTCA being more negatively charged, as determined via a quantum chemical calculation. The calculation further indicated that the spatial distance of PBTCA to the (1 0 4) face of calcite was less due to stronger chelating ability and better suitability of the structure. As a result, in the tested temperature range, PBTCA exhibited the more effective inhibitory effect against calcium carbonate scaling.
研究领域:
化学工程
·
材料科学
✓ 已验证
DOI
高影响因子
ACS Applied Optical Materials
·
2025
·
IF 3.8
Yan Zhang,Junzhe Wang,Liang Li,Honggang Zhang,Bei Li,Xiangxiang Zhang,Zeyan Wang,Yuanyuan Liu,Peng Wang,Hefeng Cheng,Ying Dai,Baibiao Huang,Zhaoke Zheng
The design of organic–inorganic heterojunctions can facilitate the separation of photoinduced charge carriers by modulating the electronic structure at the surface and interface states, showing promising applications in the field of photocatalytic CO2 cycloaddition. However, the details of the surface/interface effects between these two components are still poorly understood. Herein, Cu2O@Cu3(HHTP)2 (HHTP = 2, 3, 6, 7, 10, 11-hexahydroxytriphenylene) heterojunctions were synthesized, where Cu2O nanoparticles (NPs) featuring distinct crystal facets were utilized as substrates for the in situ growth of the copper-based metal–organic framework (Cu3(HHTP)2). Among them, t-Cu2O@Cu3(HHTP)2, centered on t-Cu2O with {111} and {100} facets, exhibits superior performance toward photocatalytic CO2 cycloaddition to chlorinated propylene carbonate, with a conversion efficiency of 372 mmol g–1 h–1 under light. Notably, single-particle spectroscopy reveals a more efficient photogenerated carrier transfer between t-Cu2O and Cu3(HHTP)2. The results confirm that crystalline facet dependence is a key factor in semiconductor photocatalysis and an important strategy for optimizing the reactivity of photocatalysts, which provides a way to improve the photocatalytic CO2 cycloaddition performance by modulating the interfacial states of organic–inorganic heterojunction structures.
研究领域:
材料科学
·
催化化学
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Bin Zhang,Xiaodong Guo,Xin Feng,Xiaoxia Duan,Guilong Wang,Chao Yang
The debenzylation reaction of hexabenzylhexaazaisowurtzitane (HBIW) and 2,6,8,12-tetraacetyl-4,10-dibenzyl-2,4,6,8,10,12-hexaazaisowurtzitane (TADBIW) to synthesize 2,6,8,12-tetraacetyl-2,4,6,8,10,12-hexaazaisowurtzitane (TAIW) is the major challenge in the production of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (HNIW). This is primarily attributed to the reaction needing a lot of palladium catalysts, which tend to deactivate rapidly during the process. In this work, a series of Pd(OH)2/C catalysts were successfully prepared through a convenient deposition-precipitation method by controlling the flow rate of the PdCl2 solution. Employing the 10% Pd(OH)2/C–F0.5 sample, the debenzylation reaction was successfully completed with a lower usage of Pd and shorter time of reaction. For the HBIW debenzylation reaction, the yield of TADBIW was 87.4% at low temperature (25 °C) when 1‰ Pd/HBIW was used, and the higher yield was 89.8% at high temperature (45 °C) when 3‰ Pd/HBIW was used. The TADBIW/Pd/h values of them were 42.5 and 95.7, respectively. For the TADBIW debenzylation reaction, the complete conversion of the reactant was realized when Pd/TADBIW was 2‰. The value of TAIW/Pd/h was 154.6 when Pd/TADBIW was 4‰, which was higher than the reports. Compared to the reported catalysts, the dosage of Pd used in the debenzylation reactions of HBIW and TADBIW was significantly decreased. Furthermore, the 10% Pd(OH)2/C–F0.5 sample was recycled six times with similar performance, demonstrating excellent stability. Based on the analysis of characterization results, it is effortless to find that the flow rate of the PdCl2 solution plays a key role in controlling the adsorption behavior of palladium species on activated carbon. The lower flow rate is beneficial to obtaining Pd nanoparticles with a smaller size, a higher proportion of Pd2+, and a higher metal distribution. This study may provide a simple way to develop palladium catalysts with high performance for related applications.
研究领域:
化学工程
·
催化材料科学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER TESTING
·
2025
·
IF 6
Ke Li,Lu-Ming Zhou,Yun-Xiao Zhang,Yuan-Xiang Zhou
Electrical treeing is a primary degradation pathway in cross-linked polyethylene (XLPE) cable insulation, making enhancement of the tree-initiation voltage (TIV) critical for reliable high-voltage operation. We report a peroxide-assisted grafting strategy that covalently incorporates 2-vinylanthraquinone (VAQ) into XLPE during standard crosslinking, thereby addressing the migration and durability limitations of physically blended stabilizers. The grafted VAQ introduces deep electronic traps and mitigates defect-driven degradation, increasing the characteristic TIV by more than 160 % and markedly suppressing tree growth under AC voltage. This migration-resistant, trap-engineered stabilization provides a practical route to improve long-term insulation reliability and is directly relevant to the design of ultra-high-voltage polymeric cables.
研究领域:
高分子材料科学
·
电气工程
·
绝缘技术
·
功能材料
·
电力系统可靠性
✓ 已验证
DOI
高影响因子
MACROMOLECULAR RESEARCH
·
2017
·Vol. 25
·期 11
·1070-1075
·
IF 1.405
Wu Dan,Lv Yin,Guo Rui,Li Jiahui,Habadati Aerman,Lu Bowen,Wang Heyun,Wei Zhong
To evaluate the effects of different alcohols (primary, secondary, and two different tertiary alcohols) as initiators on the structure of polycaprolactone (PCL) in ring-opening polymerization (ROP), four experiments were conducted in toluene with tin(II) 2-ethylhexanoate (Sn(Oct) 2 ) as the catalyst. The kinetics of ε -caprolactone ( ε -CL) ROP at different temperatures and monomer concentrations were studied with n -butanol as the initiator and Sn(Oct) 2 as the catalyst. The kinetic plot of ln(M 0 /M t ) vs. time ( t ) seems a linear, which indicates that the propagation rate is in the first order with respect to monomer concentration. When the reaction temperature increased, the reaction rate and the final relative maximum monomer conversions also increased. The molecular weight of PCL initially increased and then decreased as monomer conversion increased. This behavior can be attributed to the high viscosity of the system, which affected monomer diffusion and polymer chain propagation. In addition, prolonging reaction time caused inter-/intramolecular transesterification. However, when monomer concentration decreased, the reaction rate decreased. The actual activation energy of Sn(Oct) 2 -catalyzed ROP of ε -CL in toluene was -75 kJ/mol.
研究领域:
高分子化学
·
材料科学
·
有机催化
·
化学反应工程
✓ 已验证
DOI
高影响因子
BioScience Trends
·
2014
·Vol. 7
·期 3
·144-151
·
IF 1.213
Xiaoying Zhou,Yazhou Cui,Jing Luan,Xiaoyan Zhou,Genglin Zhang,Xiumei Zhang,Jinxiang Han
Matrix vesicles (MVs) involved in the initiation of mineralization by deposition of hydroxyapatite (HA) in their lumen are released by the budding of mineralization-competent cells during skeletogenesis and bone development. To identify additional mineralization-related proteins, MVs were isolated from non-stimulated and stimulated Saos-2 cells in culture via an ExoquickTM approach and the corresponding proteomes were identified and quantified with label-free quantitative proteome technology. The isolated MVs were confirmed by electron microscopy, alkaline phosphatase activity (ALP), biomarkers, and mineral formation analyses. Label-free quantitative proteome analysis revealed that 19 calcium binding proteins (CaBPs), including Grp94, calnexin, calreticulin, calmodulin, and S100A4/A10, were up-regulated in MVs of Saos-2 cells upon stimulation of mineralization. This result provides new clues to study the mechanism of the initiation of MV-mediated mineralization.
研究领域:
蛋白质组学
·
骨生物学
·
细胞生物化学
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Yeyin Tao,Xingyun Chen,Shusen Peng,Yongcun Ma
Self-assembled organothiol is a well-known process to endow specific protective properties and usually involves passive incubation. Researchers have recently confirmed that the potential-assisted method is more selective and faster than the passive method. This paper provides an original and promising approach for Cu protection by 2-mercaptobenzobthiazole (MBT) assembled film prepared from an aqueous solution within minutes under potential control. Electrochemical studies, salt spray tests, and XPS highlight and confirm the benefits of this method to result in film features, organic solvent-free, and considerable savings of preparation time. Experimental results also demonstrate that the substrate potential exerts a significant effect on the quality of MBT film. The effectiveness of negative potential in MBT film formation can be attributed to two aspects: first, it can inhibit the oxidation of Cu metal to Cu(II) in the aqueous solution, and second, it can make MBT molecule bond to Cu mainly through forming thiolate Cu-S bond with its exocyclic S atom.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
·
2020
·
IF 2.888
Jinyi Chen,Hongxing Wang
Density and viscosity data of pure 3-chloro-4-fluoronitrobenzene and 3-chloro-2-fluoronitrobenzene were obtained in temperature range from 318.15 K to 348.15 K at the local atmospheric pressure of 99.7 kPa. The value of corresponding saturated vapour pressure of two isomers were determined in the temperature range of 409 K to 517 K. The relationship between temperature and density can be well correlated by the linear equation. The viscosity data was well described by the Litovitz, Ghatee, VFT, and Andrade equations, and the calculated value by the VFT equation is consistent with the measured data. Both the Antoine and Riedel equations can accurately describe the relationship between saturated vapour pressure and temperature of 3-chloro-4-fluoronitrobenzene and 3-chloro-2-fluoronitrobenzene, which can meet the requirements for chemical design. In addition, the thermal expansion coefficient was determined based on the density data, and the molar vaporisation enthalpy of two isomers was evaluated using the Clausius-Clapeyron equation.
研究领域:
化学工程
·
物理化学
✓ 已验证
DOI
高影响因子
JOURNAL OF COORDINATION CHEMISTRY
·
2014
·
IF 2.212
Xiao-Li Tang,Ai-Qing Ma,Guo-Qiang Cai,Long-Guan Zhu
Three complexes with same components, PdII, 2-sulfobenzoate and 1,10-phenanthroline, [Pd(phen)2]⋅2(2-Hsb) (1), [Pd(phen)2](2-Hsb)⋅(2-Hsb)⋅2H2O (2), and [Pd(phen)2]⋅[Pd(phen)(2-sb)2]⋅6H2O (3), where 2-H2sb is 2-sulfobenzoic acid and phen is 1,10-phenanthroline, were synthesized and characterized by IR spectra, elemental analyses, thermogravimetric analyses, UV–vis absorption spectra and powder X-ray analysis. Single X-ray crystal structural analyses showed that 1 and 2 are ionic species, while 3 is a dimer through weak bonding interactions. In 1 and 2, 2-Hsb− ligands are partly deprotonated and it is fully deprotonated in 3. In 2 and 3 there are hydrogen bonds and π–π interactions. Extended hydrogen bonding structures for 2 and 3 are 1-D and 3-D architectures, respectively. The oxidation of methyl phenyl sulfide by 1-3 as homogeneous catalysts gave high conversion and selectivity in methanol. The addition of 2-sulfobenzoic acid in the catalytic reaction further promotes the conversion.
研究领域:
化学
·
材料科学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2017
·
IF 5.401
Tingting Luo,Yiqi Li,Yanxue Xu,Shiting Zhang,Yujue Wang,Xingming Kou,Dan Xiao
In this article, a hyperfluorescence 2-pyridone derivative (D-TPCA) has been synthesized within 5 min by the microwave-assistant heat treatment of the aqueous mixture of citric acid and 2-aminoethanethiol hydrochloride. The as-prepared D-TPCA exhibited good aqueous solubility and excellent fluorescent property with a quantum yield of 89.9%. Because the fluorescence of D-TPCA could be effectively quenched by picric acid (PA), D-TPCA could be served as a “turn-off” fluorescence sensor for PA in aqueous solution. The proposed sensing method permitted a selective and sensitive detection of PA in a linear range of 0–45 μM with a detection limit of 56.0 nM. The determination results of PA in real water samples with a recovery range of 95.4–107.3% confirmed a good analytical performance of this sensor. In addition, the possible sensing mechanism has been discussed in detail.
研究领域:
分析化学
·
材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）