Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Junshuo Cui,Shuang Liu,Liangyu Guo,Zhongjun Li,Zuozhen Zhang,Ying Xiong
Uniform dispersion of graphene is a prerequisite for the preparation of high-performance graphene-based composites. In this study, a new type of coupling agent which contains a thiophene center and two silanol groups (TPSi) is synthesized via amino-epoxy ring-opening reaction. The molecule shows good ability for dispersing graphene in water based on its amphiphilic feature. Dynamic light scattering (DLS) reveals that the concentration of graphene reaches 3 mg mL −1 at the weight ratio of TPSi-to-graphene of 1:1. It also stabilizes graphene well when diminishing the weight ratio to 0.5:1. By freeze-drying the dispersion, TPSi/graphene composite is prepared and it shows good adsorption performance for Mo(VI) in water. The maximum capacity can reach to 134.87 mg g −1 at pH 3 according to the Langmuir isotherm model. The composite also exhibits fast adsorption kinetics that equilibrium could be achieved within 2 h. TPSi plays a key role for the uniform distribution of graphene and improves the adsorption capability of graphene-based composite for Mo(VI) ions.
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Journal of Environmental Chemical Engineering
·
2025
·Vol. 13
·期 6
·120413
·
IF 7.2
Yiting Lei,Yulong Ma,Yonggang Sun,Liqiong Wang
Lignin, a three-dimensional network biopolymer, presents catalytic challenges due to its recalcitrant C(aryl)–O/C(aryl)–C bonds and diverse oxygen functionalities. To address this, we engineered Mo 2 C-decorated Ni-Mo bimetallic catalysts (Ni- Mo 2 C@NC-x) via dopamine-mediated self-assembly, achieving unprecedented 2D nanosheet architectures. The optimized Ni-Mo 2 [email protected] exhibited a 10.2-fold surface area enhancement (230.4 m 2 ·g⁻ 1 vs. 22.6 m 2 ·g⁻ 1 for Ni@NC), maximizing accessible active sites. The highly dispersed MoC 2 phase enhanced the graphitization degree, facilitated electron transfer while simultaneously increased Lewis and Brønsted acid densities. Furthermore, the Mo 2 C phase effectively enriched Mo 5+ species, which promoted selective cleavage of C–O and C–C bonds via oxygen vacancy generation. The synergistic interplay between the Mo 2 C phase and Ni metal centers achieved 95.69 % lignin oil conversion with 85.25 % cycloalkane selectivity. This work establishes a multifunctional catalyst design paradigm where tailored defect-acid cooperativity overcomes lignin depolymerization-deoxygenation trade-offs.
研究领域:
催化
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材料科学
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可持续能源
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生物质转化
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纳米材料
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高影响因子
FUEL
·
2025
·
IF 7.5
Xin Zhang,Xiangyun Sun,Li Li,Xinli Zhang,Ao-Bing Wang,Huijuan Xu,Lijun Gao,Yaohui Gao,Hui Liu
Developing low-cost, highly efficient and stable non-noble metal-based electrocatalysts for the hydrogen evolution reaction (HER) is crucial for promoting large-scale alkaline water electrolysis. Here, we report a novel self-supporting Ni(OH) x /Mo-Ni 3 S 2 nanosheet heterostructure grown on nickel foam, demonstrating outstanding catalytic performance for alkaline HER. This heterostructure electrocatalyst exhibits an exceptionally low overpotential of just 33 mV at a current density of 10 mA cm −2 in 1 M KOH solution, surpassing commercial Pt/C catalyst. Moreover, it can operate continuously for 300 h at a high current density of around 130 mA cm −2 . Both experimental and theoretical calculations show that strong electronic coupling at the heterojunction interface optimizes the adsorption energy of molecular water and hydrogen on active sites, thereby enhancing the intrinsic activity. This work offers novel insights for designing high-performance alkaline HER electrocatalysts through coupling doping and heterostructure engineering.
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Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Yue Du,Jiacheng Hu,Yongxu Jin,Yisi Liu,Qiyun Pan,Kai Wang,Lina Zhou,Zhenhui Liu,Xiaodi Du
The development of fast and high yield route for large scale synthesis porous TiO 2 based catalyst has attracted widespread concern in the field of optoelectronic and catalysis. Up to now, the facile synthesis of mesoporous TiO 2 based composite is still limited to wet chemical synthesis approach (hydrothermal, phase transformation, or sol-gel method etc.). Here, we develop a polyethyleneimine-assisted solvent-free strategy to synthesize of ionic liquid-derived Mo-based mesoporous TiO 2 composite, with molybdenum sites uniformly distributed on TiO 2 matrix. As-synthesized ionic liquid-derived mesoporous MoO x /TiO 2 composite is composed of uniform nano-sized anatase particles and connected by worm-like mesoporous channel. Moreover, the calcination conditions and loading amount of molybdenum-containing ionic liquid have been further optimized. These distinct characteristics endow the prospective MoO x /TiO 2 composite with excellent performance in catalytic oxidation reaction, which can remove refractory organic sulfur compound in the model fuel effectively. Our work opens a new solvent-free avenue to synthesis porous metal based ionic liquids/TiO 2 composite.
研究领域:
材料科学
·
催化化学
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ANALYST
·
2022
·Vol. 147
·期 8
·1631-1640
·
IF 5.227
Yunkang Ma,Chenhui Wu,Wenjie Yang,Zhigang Gao,Lihua Chen
Mycoplasma ovipneumoniae (MO), a disease-causing pathogen with some of the highest levels of morbidity and mortality, can spread silently at the herd level. A novel alternative nanoprobe for MO was prepared using porous metal–organic frameworks (MOFs) as the scaffold and hairpin DNA with specific sequences of MO and G4 segments as the probe. This preparation was based on the strong fluorescence emission by ThT (thioflavin T) in the limitation of G-quadruplexes with a cavity structure. The use of MOFs effectively limited the folding behavior of G4 as a part of the probe to improve the defect of the strong background signal caused by the free-state G4Probe in a buffer. The results from the selectivity experiment showed that only a trace amount of the target with lower ΔG could be the “key” to the highly efficient triggering of the release behavior of the G4Probe from MOFs and the subsequent change in the fluorescence behavior of ThT. The DNA targets could be determined by observing the change in the signal. More importantly, the probe showed a low detection limit and a good linear correlation between the concentration of target DNA ranging from 10−10 M to 10−6 M not only in buffer but also in natural complex media. Moreover, the operation involved in the whole strategy was simple and the total cost was low. These findings demonstrated the value of the probe in further clinical diagnosis. This study reports the successful construction of a ΔG-sensitive sensor for MO for the first time.
研究领域:
生物技术
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微生物学
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分析化学
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纳米技术
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PubMed
高影响因子
Materials Today
·
2026
·
IF 24.1
Zhongzheng Yao,He Zhu,Yu Lou,Fan Xue,Jingqian Huang,Hua Ji,Wei-Di Liu,Xindong Zhu,Sinan Liu,Jianrong Zeng,Yang Ren,Xun-Li Wang,Yang Lu,Si Lan
Metallic glasses (MGs), despite exhibiting superior electrochemical catalytic and sensing activity to crystalline solids, remain difficult to rationally design because the structural units that directly correlate to active sites are poorly resolved. Here, we address this challenge by showing that a small change in Ni content (±4 at%) in Ni-Mo-P-B MGs gives precise control of short‑range-ordered (SRO) polyhedral motifs and their medium‑range connections. Synchrotron X-ray analysis reveals that the Ni 64 Mo 16 P 16 B 4 (Ni 64 ) stabilizes ten-coordinated (Z10) bi-capped square archimedean antiprisms (BSAPs) as the dominant SRO polyhedral, whereas Ni 60 Mo 20 P 16 B 4 (Ni 60 ) and Ni 68 Mo 12 P 16 B 4 (Ni 68 ) are dominated by nine-coordinate (Z9) tricapped trigonal prisms (TTPs). Crucially, this engineered SRO dramatically enhances the electrochemical glucose sensing: Ni 64 delivers ultrahigh sensitivity, a wide linear range, and stable operation over seven days, whose performance is far superior to conventional crystalline probes. First-principles calculations reveal that only at a Ni/Mo ratio of 4 does short-range chemical ordering favor the highly symmetric Z10 BSAPs with two Mo atoms occupying the two polyhedral caps. These Mo‑capped Z10 clusters optimally modulate Mo-Ni electronic interactions, lowering the *OH adsorption barrier and boosting catalytic reactivity. A miniaturized glucose sensor was fabricated by integrated the MG with a screen-printed electrode, demonstrating the practical applicability. Notably, we found that the dominant polyhedra show homology to local building blocks of nearby crystalline phases, suggesting that amorphous structures inherit crystal-like motifs that govern both stability and properties. Our work establishes an atomic-scale structural engineering paradigm for MG design, bridging crystalline-amorphous structural homology with functional optimization, and deepening the understanding of structure–property correlations in MG systems.
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Journal of Materials Chemistry A
·
2026
·
IF 9.5
liang wu,Na Wang,Yifeng Xiao,Qiankun Zhang,Guangyao Yang,Zhi He,Xiyue Kang,Yao Jiang,Yuehui He
Direct seawater electrolysis represents a pivotal technology for green hydrogen production. However, achieving efficient and stable cathodic heterostructures capable of maintaining long-term stability under industrial current densities remains a significant challenge. This work reports an in situ constructed Ni-Cr-Fe-Mo heterostructure derived from four transition metal powders, which feature multilevel catalytic heterointerfaces and abundant multifunctional active sites. The heterostructure demonstrates sustained hydrogen evolution for 50 hours at 2 A cm -2 in alkaline and neutral seawater electrolytes, while exhibiting exceptional performance under amperelevel current densities. Density functional theory (DFT) calculations reveal that two distinct active sites at the multiscale Ni-Cr-Fe-Mo heterointerfaces synergistically accelerate the hydrogen evolution reaction (HER) through a relay catalysis mechanism: one site facilitates H 2 O cleavage and the other promotes H 2 synthesis. This cooperative process not only optimizes reaction kinetics but also enhances corrosion resistance, enabling persistent high-efficiency seawater electrolysis. The study provides fundamental insights into the mechanisms driving long-term operational stability and offers a novel paradigm for developing durable heterostructures for industrial-scale seawater hydrogen production.
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SURFACE & COATINGS TECHNOLOGY
·
2019
·
IF 3.192
Lu Zhu,Yousen Zhu,Xuanru Ren,Ping Zhang,Jianghao Qiao,Peizhong Feng
MoSi 2 -MoB-ZrO 2 composite powders are one-step synthesized prepared by self-propagating high-temperature synthesis (SHS), which are further utilized to prepare the oxidation protective coatings by spark plasma sintering (SPS) method on molybdenum substrate. Microstructure and properties of the coatings were investigated and determined. Oxidation behavior of the coatings at high temperature was also studied. The results showed that the composite coating is dense and crack-free due to the addition of ZrO 2 , which is beneficial for the decrease of mismatch in coefficient of thermal expansion, and no void exists in the diffusion layer owing to the diffusion of Si, which is inhibited by adding MoB. Compared with the pure MoSi2 coating, the high hardness of the composite coating is enhanced by about 20% while the fracture toughness of the composite coating is improved by about 25%, which makes the occurrence of intergranular fracture , crack deflection and crack bridging. After oxidation at 1400 °C for 80 h, MoSi 2 coating failed while xMoSi 2 -MoB-3ZrO 2 (x = 3, 4, 5) composite coating still kept its protective effect. Only a little substrate is consumed during oxidation and improved oxidation resistance is gained by MoSi 2 -MoB-ZrO 2 composite coating. 3MoSi 2 -MoB-3ZrO 2 coating shows the relatively best oxidation resistance due to the formation of crack-free oxide film on the surface of the coating.
研究领域:
材料科学
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表面工程
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高温氧化
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陶瓷涂层
·
粉末冶金
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 9
·1-13
·
IF 2.8
Gong Zonggui,Wang Nanlan,Guo Haoxuan,Zhu Peishu,Wang Qijing,Yu Hang,Zhang Yu,Gao Min,Zheng Xinghua
Due to the increasingly urgent safety and energy density concerns of lithium-ion batteries, more and more attention has been attracted by the Li 7 La 3 Zr 2 O 12 (LLZO)-based solid electrolytes with high ion conductivity and chemical stability against Li-metal. However, to prepare the high-quality LLZO ceramic electrolyte with high-ion conductivity and density, there is still a big challenge of the serious “Li-loss” and the abnormal grain growth during the long-time high-temperature sintering process. A novel covered sintering method is put forward to prepare the high-quality Mo-doped LLZO (LLZMO) ceramic electrolyte. The sintering strategy effectively suppresses the Li-loss to obtain the LLZMO dense ceramics with cubic garnet phase and tight grain boundaries. The LLZMO ceramics sintered at lower temperature of 1050 °C for 2 h via the novel covered sintering exhibit high density ( ρ r = 92.3%) and high-ionic conductivity of 6.08 × 10 –4 S cm −1 at 25 °C, which are close to those of LLZO-based ceramics prepared by hot pressing sintering, ultrafast high-temperature sintering (UHS). The novel covered sintering provides an energy-saving, low-cost and high-efficient strategy to prepare the high-quality LLZO-based ceramics electrolyte.
研究领域:
材料科学
·
固态电解质研究
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2019
·
IF 4.084
Li Gong,Kai Lan,Xiang Wang,Xiaokang Huang,Pengbo Jiang,Kaizhi Wang,Ming Yang,Lei Ma,Rong Li
Exploration of noble-metal-free, highly-efficient and durable catalysts for Hydrogen evolution reaction (HER) remains a challenge. In this work, the development of carbon-coated cobalt-molybdenum-phosphide nanosheets supported on carbon cloth (Co-Mo-P@C) is successfully demonstrated. To obtain a better electrocatalystic performance, the different amount of glucose was added into the reaction system during hydrothermal process. Benefiting from the 2D structure, high electrical conductivity and sufficient active sites, the Co-Mo-P@C contained 0.5 mmol glucose exhibits relatively good catalytic activity for HER with low over poentials at −96 mV and −162 mV @ 10 mA cm −2 in acidic and alkaline medias respectively and the Tafel slope of 52.9 mV dec −1 and 34.3 mV dec −1 . Additionally, the catalyst also shows good durability in the both electrolytes.
研究领域:
材料科学
·
能源化学
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高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 8.2
Hui Xin,Rongtan Li,Xuyuan Huang,Dan Li,Lan Wu,Xiandeng Hou
The coordinatively unsaturated metal species of metal oxides always play important roles in both constructing oxide-based catalysts and catalyzing some reactions. However, it is a challenge to tune its surface density and stability due to the uncontrolled reduction. Herein, we deposit MoO3 onto different oxides via the simple dry combustion method and find that the host oxides affect formation of coordinatively unsaturated Mo species through the oxide–support interaction, thus strongly altering their reverse water–gas shift activity. The strong oxide–support interaction lowers the reduction temperature of the amorphous oligomeric MoOx species on m-ZrO2 and a-TiO2 supports, generating high surface content of coordinatively unsaturated MoO2-x species with high stability, compared with those on CeO2, γ-Al2O3, and SiO2 supports. Consequently, MoO3/m-ZrO2 displays the highest CO2 reaction rate through the formate reaction pathway, i.e., 19.2 mmolCO2·gcatal–1·h–1, followed by MoO3/a-TiO2 (12.8 mmolCO2·gcatal–1·h–1), which are 21 and 14 times higher than that of MoO3, respectively. Moreover, the MoO3/m-ZrO2 and MoO3/a-TiO2 catalysts also display good stability during the 60 h reaction due to the strong interface bonding. This work provides a way to mediate catalytic performance of metal oxide catalysts through the oxide–support interaction.
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高影响因子
LANGMUIR
·
2026
·
IF 4.4
Xinya Ren,Taolue Liu,Fengguang Wang,Hao Li,Zifeng Huang,Yuling Li,Jinxuan Liu,Yu Wei,Yan Gao
Electrochemical water splitting is a crucial pathway for clean hydrogen production, but hydrogen evolution reaction (HER) electrodes often suffer from poor performance in alkaline conditions due to sluggish kinetics and weak durability. In this work, ammonium tetrathiomolybdate ((NH4)2MoS4) is used as a dual-functional precursor to transform Ni(OH)2 nanosheets into 3D Mo–Ni3S2 nanostructures. The fabricated electrode, Mo–Ni3S2/Nickel Foam, with an enlarged electrochemical active surface area, exhibits a low overpotential of 166 mV at 100 mA cm–2 in 1 M KOH and outstanding durability (>300 h). When integrated into anion-exchange membrane electrolyzers (AEMWE), it maintains stability for over 360 h at 500 mA cm–2. The enhanced performance could potentially be attributed to the hierarchical nanostructure that provides abundant active sites, and the in situ fabrication method ensures the durability of the electrode.
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高影响因子
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