APPLIED CATALYSIS B-ENVIRONMENTAL
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2023
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IF 22.1
Huiling Zhang,Xiaomei Zhou,Longxin Liu,Fujun Lan,Teng Zhao,Mo Qiu,Qingxin Guan,Wei Li
Atomically dispersed cluster catalysts own versatile applications in biomass valorization, while the controllable assembly and microenvironmental regulation remain a crucial challenge. Herein, Co clusters assembled via nanosized ZIF-67 sprouted from Co-Al layered double hydroxide nanoflowers were applied for selective hydrogenation of furfural (FAL). The pyrolysis temperature can tune the microstructures and acid properties of the catalyst, which accounts for the hydrogenation of FAL to furfuryl alcohol (FOL), 2-methylfuran (2-MF), and tetrahydrofurfuryl alcohol (THFOL) with yield of 99.1 %, 96.7 %, and 82.3 %, respectively. The Co clusters favor C O bond adsorption via bridging-type adsorption mode while suppressing the furan ring adsorption. Moreover, ultra-dispersed Co clusters facilitate the cleavage of C-OH bonds in FOL intermediate, leading to a high 2-MF yield. As the pyrolysis temperature increase, the formed Co nanoparticles are conducive to the parallel adsorption of FAL, resulting in the production of THFOL. This work affords a multi-functional catalyst in catalytic biomass upgrading.
研究领域:
催化
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材料科学
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化学工程
·
生物质转化
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DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Qianqian Zhang,Yaru Zhu,Min Yang,Yanru Zhang,Jialin Wang,Shanshan Liu,Ye Liu,Xin Yang,Kai Feng,Wenzuo Li
Aqueous zinc-ion batteries (AZIBs) have good application prospects in the field of large-scale energy storage. The design and synthesis of high-performance cathode materials are key to promoting the development and application of AZIBs. In this work, the combination of redox active V 4+ cation and HPO 3 2− anion provides excellent zinc-ion (de)intercalation ability. In addition, HPO 3 2− and C 2 O 4 2− anion groups collaborate to construct a stable framework with multi-dimensional zinc-ion transport channels, providing fast and robust pathway for zinc-ion transport. Carbon composites further improve electronic conductivity, shorten ion transport distance, and increase the electrochemical reaction area of Na 2 [(VO) 2 (HPO 3 ) 2 (C 2 O 4 )]·2H 2 O@C (NVPCO@C) cathode material. As a result, NVPCO@C cathode material delivers a high specific capacity over 180 mAh·g −1 at a current density of 40 mA·g −1 . Moreover, NVPCO@30%C cathode material maintains 100 % capacity after 100 cycles. Ex-situ X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Raman spectra confirm the electrochemical activity of V 4+ /HPO 3 2− ions and reveal the zinc-ion storage mechanism.
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DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2020
·
IF 4.032
Hongyan Li,Xianglin Hou,Lin Chai,Xiaojing Cui,Yingxiong Wang,Tiansheng Deng
The degradation and recovery of waste rigid polyurethane foam (RPUF) have confronted enormous challenge because of its three-dimensional network. An efficient strategy was developed for chemical recycling of high value-added aromatic polyamines and polyether polyols via selective cleavage of carbamate and urea bonds from RPUF and characterized by Nuclear Magnetic Resonance (NMR) and Fourier Transform Infrared Ray (FT-IR). The carbamate and urea bonds were readily cleaved using (NH 2 ) 2 CO/CH 3 CH 2 OH as degradation system at 180 °C for 10 h. Nevertheless, the C–C bonds and C–O–C of ether linkages as framework structure remained intact in the degradation process. Eventually, the high value-added products including aromatic polyamines and polyether polyols were retrieved. A feasible mechanism for degradation was proposed based on the NMR observations.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Ling Hu,Zhiwen Wang,Yingzhang Shi,Cheng Liu,Yidong Hou,Jinhong Bi,Ling Wu
The defect-rich ultrathin WO 3 nanosheets are successfully prepared as photocatalysts via heating treatment for the pristine WO 3 nanosheets (NS) in vacuum (NSV) and N 2 atmosphere (NSN). The increment of degradation efficiencies of levofloxacin (LVX) over NS (49.9 %)
研究领域:
环境科学
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材料科学
·
化学
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产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
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2026
·
IF 8.4
Guanghui Zhou,Yumeng Jia,Kai Chen,Haiguang Gao,Jian Zang,Yucheng Huang,Juan Xu,Jianyu Cao
Organic cathode materials present a highly viable alternative, offering abundant resources, environmental compatibility, and highly designable molecular structures. However, conventional organic materials suffer from high solubility and low electronic conductivity. To overcome these inherent drawbacks, we propose a structural design strategy based on constructing extended π-conjugated molecular frameworks with high-density electrochemically reversible groups. Inspired by this strategy, we synthesized a novel sulfur-linked C3-symmetric conjugated organic compound, tris-benzothioxanthenedione 2,3-b (denoted as 6S6O), via a facile condensation reaction. The unique structure of 6S6O provides multiple high-density C=O/C=N moieties for reversible lithium storage, excellent solvent tolerance, and high intrinsic conductivity due to electron delocalization. Electrochemical testing demonstrates outstanding performance in a Li//6S6O half-cell, delivering a high reversible capacity of 352 mAh g −1 at 0.1 A g −1 , corresponding to a high energy density of ∼748.6 Wh kg −1 . Importantly, the electrode demonstrates excellent rate capability (retaining 65.3% capacity with a 20-fold current increase) and superior long-term cycling stability, maintaining 77.5% capacity retention over 2409 cycles at 2 A g −1 . Ex situ characterization and DFT calculations confirm a highly reversible, capacitive-controlled Li + storage mechanism involving the C=O and C=N bonds of the quinone/pyrazine units. The results validate the effectiveness of the extended π-conjugated design for developing high-performance organic cathode materials.
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DOI
高影响因子
ENERGY
·
2025
·
IF 9.4
Yulei Zhang,Zonglu Yao,Junyi Ma,Jiadong Yu,Ping Ai,Ruixia Shen,Yi Liang,Lixin Zhao
Low interspecies electron transfer efficiency among microorganisms is a critical factor limiting anaerobic digestion performance. In this study, conductive and stable biochar (BC) was combined with redox-active anthraquinone-2-sulfonate (AQS) to enhance electron transfer efficiency through their synergistic effects, thereby improving the efficiency of anaerobic digestion. Results showed that cumulative methane production (CMP) reached 176.34 mL/g VS under optimal conditions, including an AQS impregnation concentration of 1 mmol/L, a BC/AQS addition of 5 %, and a total solid (TS) content of 10 %. The addition of BC/AQS enriched Proteiniphilum and Methanobacterium , which shifted the methanogenic pathway from acetoclastic to hydrogenotrophic, significantly improving volatile fatty acid conversion and total organic carbon degradation. Redundancy analysis (RDA) and changes in key enzyme-encoding genes indicated that BC/AQS enhances the synergistic interaction between Proteiniphilum and Methanobacterium through the redox activity of quinone/C=O functional groups, which may play a key role in the formation of direct interspecies electron transfer (DIET). This study provides a promising strategy to enhance microbial electron transfer mechanisms in anaerobic digestion by leveraging the complementary properties of meso-materials, offering new insights into the utilization of agricultural waste for energy production.
研究领域:
环境科学
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微生物学
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DOI
高影响因子
Carbon Energy
·
2025
·
IF 24.2
Meng Zhang,Ting Xu,Wei Liu,Han Zhang,Junjie Qi,Xuan Wang,Yaxuan Wang,Liyu Zhu,Kun Liu,Junfeng Wang,Chuanling Si
Carbon-based substrates in Zn–MnO 2 flexible batteries have issues of low adhesion to MnO 2 , impacting cycle stability and capacity performance. A triple-synergistic strategy integrating C–O–Mn covalent bonding, wettability optimization, and hierarchical mesoporous engineering via cellulose nanofibers/carbon nanotube (CNF/CNT)-modified carbon cloth (CC) was proposed. This design achieves a “surface-locking” effect between the substrate and electrode materials, which was proven through theory and experiments. Density functional theory (DFT) simulations validate the “surface-locking” mechanism, where oxygen functionalities on CNF can form robust CO–Mn bonds with MnO 2 , inducing an increase in MnO 2 adsorption energy from −0.21 eV (pristine CC) to −1.36 eV, effectively suppressing Mn dissolution. Optimal wettability (contact angle: 97°) reduced Zn 2+ desolvation and water-induced side reactions. Hierarchical pore structures accelerated Zn 2+ diffusion. The optimized CC@CNF 1 /CNT 2 –MnO 2 cathode achieves 92% capacity retention after 2000 cycles at 1 A/g. This study highlights a surface engineering strategy that effectively addresses the individual challenges associated with interfacial adhesion, reaction kinetics, and ion transport. This strategy offers fundamental insights into electrode interface modification for the development of next-generation flexible energy storage systems.
研究领域:
材料科学
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储能
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电化学
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纳米材料
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柔性电子
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产品关联
DOI
高影响因子
DESALINATION
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2026
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IF 9.8
Chen Tan,Jing Miao,Kanghui Liu,Aichun Zhao,Xinlong Guo,Linjie Qin
Developing cost-effective adsorbents capable of treating multipollutant wastewater under fluctuating pH conditions remains a major challenge for layered double hydroxide (LDH)-based materials. Herein, we report a La-doped MgAl-borate LDH/Nitrogen-doped carbon hybrid (LaMgAl-BLDH/NC) constructed through a C-O-M interfacial coupling, in which hydroxyl-rich N-doped carbon reacts with the metal‑oxygen layers of LaMgAl-BLDH to form robust covalent C-O-M linkages. This bonding-directed assembly produces a chemically durable and strongly integrated 3D porous network with enhanced charge heterogeneity and improved resistance to acidic or alkaline corrosion. Benefiting from this strengthened interfacial coupling and the synergistic effects of La incorporation, the LaMgAl-BLDH/NC composite exhibits high removal capacities toward structurally diverse pollutants, achieving maximum capacities of 995.20 mg/g for Congo red, 3020.19 mg/g for malachite green, and 151.34 mg/g for phosphate. Notably, compare with conventional LDHs that undergo structural degradation in acidic or alkaline environments, the C-O-M reinforced hybrid maintains excellent performance over a broad pH range of 4–10. The maximum adsorption capacities of the adsorbent for Congo red, malachite green and phosphate at pH 2, 4 and 12 correspond to 79.65%, 87.32% and 58.83% of those obtained at their respective optimal pH values. Mechanistic analysis reveals that electrostatic interaction, ion exchange, π-π stacking, pore filling jointly govern the removal process. Optimization via Box-Behnken response surface methodology further enhances removal efficiency by identifying favorable synthesis and operational conditions. This work establishes a generalizable, low-cost C-O-M bonding strategy for pH-tolerant LDH/carbon hybrids, enabling efficient remediation of multipollutant industrial wastewater.
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DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2023
·
IF 11.4
Zhenyu Chen,Lu Zhan,Zhenming Xu
Bromine removal is significant in the recycling of waste printed circuit boards (WPCBs). This study found that the critical factors limiting the debromination efficiency of conventional pyrolysis are the formation of coke impeding mass transfer and conversion of bromine into less volatile species, such as coking-Br and copper bromide. According to frontier molecular orbital analysis and thermodynamic equilibrium analysis, C–O bonds of resin are sites prone to electrophilic reactions and copper bromide in residue may undergo hydrolysis; therefore, introducing H2O during pyrolysis was a feasible method for thorough debromination. Through pyrolysis in a water vapor atmosphere, the diffusion limitation of debromination was overcome, and resin was converted into light components; thereby, rapid and deep removal of bromine was achieved. The result indicated that 99.7% of bromine was removed, and the residue could be used as a clean secondary resource. According to life-cycle assessment, pyrolysis of WPCBs in water vapor could be expected to reduce 77 Kt of CO2 emission and increase financial benefits by 60 million dollars, annually.
研究领域:
环境科学
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化学工程
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材料科学
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可持续性
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DOI
PubMed
高影响因子
GREEN CHEMISTRY
·
2024
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IF 9.3
Shan Jiang,Riyang Shu,Anqi Wang,Zhuoli Deng,Yuhong Xiao,Jiajin Li,Qingwei Meng,Qian Zhang
High-quality liquid biofuels can be produced from renewable lignin-derived phenolic compounds through the efficient hydrodeoxygenation (HDO) process, in which the traditional catalysts usually include metal site and acid site that catalyzes hydrogenation and deoxygenation procedures respectively. This work presented a novel acid-free NixMoyN/C catalyst from the perspective of green chemistry, providing a new pathway for HDO of lignin-derived phenolic compounds that involves hydrogenation, deoxygenation and hydrogenolysis at the same time. A series of NixMoyN/C catalysts were prepared by varying Ni and Mo molar ratio, where the Ni1Mo3N/C catalyst showed the best HDO performance. Guaiacol was completely converted at 260 °C after 4 h, with 95.8% cyclohexane selectivity. And a small amount of benzene can be obtained as a valuable fuel additive by-product by altering the conventional HDO reaction path. By shortening the reaction time, benzene can be obtained as the intermediate products with a relative high selectivity. Based on the characterizations of XRD, BET, SEM, TEM, XPS, H2-TPD and EPR, the results demonstrate that the multiple active components of Ni1Mo3N/C catalyst allow it to efficiently catalyze the hydrogen activation and C-O bond cleavage even under acid-free condition. The existence of the active phase of Ni, Ni2Mo3N and β-Mo2C, as well as the interaction between Ni and Mo metals, contributes together to achieve an efficient HDO performance. Not only for the various phenolic model compounds, the feasibility of Ni1Mo3N/C catalysts for upgrading raw lignin-oil was also demonstrated, with the hydrocarbon content increasing from 5.7% to 88.4%. Notably, arenes account for 18.2% in the hydrocarbon products, which confirms the occurrence of hydrogenolysis in the catalytic process. This work provides a novel route for the conversion of lignin-derived phenolic compounds to the production of high-quality hydrocarbon liquid biofuels, especially the direct production of arene component.
研究领域:
化学工程
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催化
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可再生能源
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绿色化学
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产品关联
DOI
高影响因子
Polymer Chemistry
·
2020
·Vol. 12
·期 4
·526-533
·
IF 5.342
Huanhuan Ma,Linan Wang,Yachao Liang,Zhe Cui,Peng Fu,Minying Liu,Xiaoguang Qiao,Xinchang Pang
Tetraphenylethylene (TPE)-containing 4-amino-2,2,6,6-tetramethylpiperidine-1-oxyl (NH2-TEMPO) and 3-(((2-cyanopropan-2-yl)oxy)(cyclohexyl)amino)-2,2-dimethyl-3-phenylpropanenitrile (Dispolreg 007) were synthesized and utilized to mediate/initiate NMP in both homogeneous and heterogeneous polymerization systems. The introduction of TPE groups decreased the C–O bond dissociation energy (BDE) of NH2-TEMPO-St and led to more efficient NMP with a higher reaction rate, even at lower temperatures. Moreover, for both solution polymerization and miniemulsion polymerization, quantitative information of the polymerization process could be easily acquired with the naked eye without destroying the reaction system, by building the relationship between the increased photoluminescence (PL) intensity of the system and monomer conversion as well as the molecular weight (Mn).
研究领域:
高分子化学
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材料科学
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产品关联
DOI
高影响因子
Journal of the American Chemical Society
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2023
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IF 15
Chunqiu Han,Yuehan Cao,Wang Yu,Zeai Huang,Fan Dong,Liqun Ye,Shan Yu,Ying Zhou
Restrained by the uncontrollable cleavage process of chemical bonds in methane molecules and corresponding formed intermediates, the target product in the reaction of methane selective oxidation to methanol would suffer from an inevitable overoxidation process, which is considered to be one of the most challenging issues in the field of catalysis. Herein, we report a conceptually different method for modulating the conversion pathway of methane through the selective cleavage of chemical bonds in the key intermediates to suppress the generation of peroxidation products. Taking metal oxides, typical semiconductors in the field of methane oxidation as model catalysts, we confirm that the cleavage of different chemical bonds in CH3O* intermediates could greatly affect the conversion pathway of methane, which has a vital role in product selectivity. Specifically, it is revealed that the formation of peroxidation products could be significantly prevented by the selective cleavage of C–O bonds in CH3O* intermediates instead of metal–O bonds, which is proved by the combination of density functional theory calculations and in situ infrared spectroscopy based on isotope labeling. By manipulating the lattice oxygen mobility of metal oxides, the electrons transferring from the surface to the CH3O* intermediates could directionally inject into the antibonding orbitals of the C–O bond, resulting in its selective cleavage. As a result, the gallium oxide with low lattice oxygen mobility shows a 3.8% conversion rate for methane with a high methanol generation rate (∼325.4 μmol g–1 h–1) and selectivity (∼87.0%) under room temperature and atmospheric pressure in the absence of extra oxidants, which is superior among the reported studies (reaction pressure: <20 bar).
研究领域:
化学工程
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催化
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材料科学
·
物理化学
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产品关联
DOI
PubMed
高影响因子
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