COLLOIDS AND SURFACES B-BIOINTERFACES
·
2015
·
IF 4.152
Tao Feng,Bin Pi,Bin Li,Lei Jiang,Yi-Meng Wang,Xue-Song Zhu,Hui-Lin Yang
Calcium phosphate cements (CPCs) are popular bone filling materials and drug carriers. However poor mechanical properties and lack of osteoinduction restrict their clinical applications. Recent studies suggested the osteogenic properties of NAC. In our study, we incorporated NAC with α-TCP/SF. We found that the compressive strength of α-TCP/SF-NAC composites increased with increase in NAC concentration, possibly due to complex three-dimensional networks of SF induced by NAC, which was large and chemically heterogeneous and induced compact oriented growth of HA crystals. However the setting time increased slightly with the addition of NAC, due to the ruptured disulfide bonds in SF. The α-TCP/SF-NAC composites also showed decent biocompatibility in vitro. As a result, these composites hold great potential as bone filling materials for clinical applications, including minimally invasive surgeries.
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高影响因子
ADVANCED MATERIALS
·
2026
·
IF 26.8
Zhechen Fan,Shuhu Yin,Wenhao Miao,Yudie Zhou,Weiyi Zhao,Yixuan Yin,Hao Yu,Lin Lin,Lina Hou,Hao Wan,Ying Wang,Junjie Ge
Atomically dispersed Fe–N–C catalysts are regarded as promising alternatives to platinum-group-metal (PGM) catalysts for proton exchange membrane fuel cells (PEMFCs). However, their further development is hindered by inadequate utilization of active sites in membrane electrode assembly (MEA). Herein, we developed a high mass activity O–FeNC catalyst with high site density and enhanced site utilization. C═O groups function as hard base linkers, promoting the densification of FeN 4 sites through Lewis acid-base interactions. Moreover, they also direct interfacial alignment within triple-phase boundaries, leading to concentrated hydronium ions and accelerated oxygen permeation via regulated ionomer nanophase segregation. As a result, the obtained O–FeNC cathode delivered a current density of 66.45 mA cm −2 at 0.90 V iR-free , surpassing the US Department of Energy 2025 target (44 mA cm −2 at 0.9 V iR-free ), with a mass activity that is 59% higher than commercial Pt/C. The peak power densities reached 1.8 W cm −2 under H 2 –O 2 and 0.93 W cm −2 under H 2 –air, alongside demonstrated industrial scalability through gram-scale synthesis and a 500 W PGM-free cathode stack prototype.
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DOI
PubMed
高影响因子
TURKISH JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 1
·207-217
·
IF 1.4
JİANG ZHIJIE,FU SHUIYUAN,ZHAO WEI,LIU XVTANG,WANG FEI,CUI MINGYU,DONG LINYANG
Fabricating highly efficient Pd-based nanocatalysts with a well-defined structure is desired for the commercialization of direct ethanol fuel cell (DEFC). Herein, a series of hierarchical three-dimensional N-doped hollow graphene spheres (NHGS) supported dendritic PdCu alloy catalysts Pd$_{x}$Cu$_{(d)}$-NHGS (x: Cu/Pd theoretical molar ratio of 4, 2, and 1) are assembled by one-pot ascorbic acid reduction-immobilization method. Aiming to maximize the Pd utilization and realize the efficient ethanol electrooxidation, this novel electrocatalyst offers potent activity sites and promotes electron and ion kinetics simultaneously. Characterization indicates that the as-obtained Pd$_{4}$Cu$_{(d)}$ alloy nanoparticles with average sizes of approximately 55 nm are evenly dispersed on the NHGS supporting materials obtained by using the SiO2 nanospheres template strategy. Three catalysts all exhibit enhanced electrocatalytic activity, of which the Pd$_{4}$Cu$_{(d)}$-NHGS shows the highest mass current activity (2683 mA mg$_{Pd}$$^{-1}$), which is 2.59 times of the commercial Pd/C toward ethanol electrooxidation in alkaline medium. Based on the results, we believed that the Pd$_{4}$Cu$_{(d)}$-NHGS could exhibit extensive application prospect in alkaline DEFC. Key words:
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Jingyi Zhang,Yuwei Li,Zongyao Guo,Yuxin He,Ying Huang,Xinquan Shen,Dan Wu
Urea tailors Co 3 O 4 nanoflakes, Co–N coordination, and interfacial disorder. • Co 3 O 4 /NF-5 reaches 1000 mA cm −2 at 1.39 V with >84.1% formate FE. • CoOOH-mediated electrochemical-chemical turnover governs glycerol oxidation. • A GOR||HER MEA sustains 200 mA cm −2 at 1.9 V for 216 h. • Techno-economic analysis estimates a net profit of $3085.7 per ton of glycerol. Electrochemical glycerol oxidation offers a sustainable pathway for valorizing biodiesel-derived glycerol while lowering the energy demand of hydrogen production. However, Co-based catalysts are often limited by inefficient coupling between the electrochemical generation and chemical consumption of oxidized Co species. Herein, a urea-mediated strategy is developed to simultaneously tailor the morphology, surface electronic structure, and local structural order of Co 3 O 4 electrodes. Urea directs the formation of vertically aligned nanoflakes, introduces Co–N coordination, increases the surface Co 3+ /Co 2+ ratio, and generates defect-rich crystalline-amorphous interfacial regions. The optimized Co 3 O 4 /NF-5 electrode delivers 1000 mA cm −2 at 1.39 ± 0.02 V, maintains a formate Faradaic efficiency above 84.1 ± 1.4% over 1.3–1.8 V, and exhibits only 3.1% activity decay after 5000 cycles. Electrochemical kinetic analysis, in situ Raman spectroscopy, and potential-step measurements reveal efficient electrochemical–chemical turnover mediated predominantly by CoOOH species, with transient Co 4+ -associated species potentially contributing at elevated potentials. Density functional theory calculations further indicate that N incorporation modulates Co 3 d states and strengthens reactant adsorption. An integrated electrolyzer operates continuously for 216 h, demonstrating device-level durability and favorable preliminary techno-economic prospects. These findings establish coupled morphological and electronic regulation as an effective strategy for promoting electrochemical–chemical turnover in glycerol electrooxidation. Download: Download high-res image (154KB) Download: Download full-size image
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JOURNAL OF NANOPARTICLE RESEARCH
·
2026
·Vol. 28
·期 6
·165
·
IF 3.5
Yang Menghui,Gao Zhen,Zhan Haoyu,Bi Mengqi,Huang Naibao,Zhang Junjie,Gan Ziqi,Wang Hao
Developing highly active, durable, and cost-effective oxygen reduction reaction (ORR) catalysts is crucial for fuel cell commercialization through the use of non-precious metal alternatives to platinum. In this study, the tunable dodecahedral Fe-N-C catalysts were synthesized through controlled pyrolysis of Fe-doped zeolite imidazolate framework-8 (ZIF-8) precursors. The optimized 5% Fe@NC-8 catalyst demonstrates excellent ORR performance with an onset potential of 0.92 V vs. RHE, a half-wave potential (E 1/2 ) of 0.83 V vs. RHE, and a limiting diffusion current density (j d ) of 6.06 mA cm −2 , surpassing commercial 20% Pt/C catalysts (onset potential 0.89 V vs. RHE; E 1/2 0.81 V vs. RHE; j d 4.27 mA cm −2 ). It also shows strong durability, retaining 86.16% of its current after prolonged polarization (@0.80 V vs. RHE for 10,000 s) and minimal negative shift in half-wave potential after extensive cycling(@200 mV s −1 for 5000 CV cycles). The enhanced catalytic performance is attributed to (i) possessing a high specific surface area (319 m 2 g −1 ) and favorable porosity to maximize active site accessibility; (ii) having abundant active sites of Fe-N x , graphitic N, and pyridinic N as active catalytic centers; and (iii) forming N-doped carbon matrices to provide a conductive framework. These advantages boost the density of accessible active sites and thus remarkably improve the ORR catalytic activity.
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高影响因子
ACS Applied Nano Materials
·
2026
·
IF 5.8
Kenan Shen,Yang Qin,Heyong Zhu,Zheming Wang,Zhenshun Mo,Yanan Wang,Zhichuan Zheng,Kai Huang,Xiaotong Zhao,Peng Du
The precise construction of bimetallic sites and the regulation of interfacial environments are crucial for accelerating the sluggish kinetics of alkaline hydrogen evolution. Transient thermochemical processing provides a unique pathway to modulate heterogeneous coordination and metal–support interaction. Herein, we report a pulse Joule-heating (PJH) strategy to activate mixed-valence PtRu nanoclusters on nitrogen-doped mesoporous carbon. The resulting PtRu/NMC-JH exhibits exceptional hydrogen evolution reaction (HER) activity in 1.0 M KOH, delivering an overpotential of only 50.4 mV to reach 100 mA cm–2 and an ultralow Tafel slope of 30.8 mV dec–1, with superior stability exceeding 100 h. Furthermore, the alkaline water electrolysis (AWE) device integrated with this cathode delivers a current density of 0.5 A cm–2 at a cell voltage of 1.59 V with robust stability over 800 h. The remarkable performance enhancement is attributed to the synergy between the subnanometer cluster size and PJH-strengthened electronic coupling, which facilitates efficient charge transfer and accelerates the alkaline HER kinetics. This work highlights the potential of ultrafast thermal activation for designing small-sized clusters and tailoring interfacial chemistry for high-performance energy conversion.
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高影响因子
JOURNAL OF SOLUTION CHEMISTRY
·
2025
·Vol. 55
·期 3
·455-480
·
IF 1.3
Wang Yuting,Wang Min,Fu Xupeng,Wang Wenxue,Chai Liming,Wang Enna,Wei Xionghui,Wu Zhaojun,Zhang Jianbin
The impact of water on the physicochemical properties and CO 2 absorption capability of the N -methyldiethanolamine (MDEA) + polyethylene glycol 300 (PEG300) solution was explored. The molar ratio of PEG300 to MDEA was fixed at 0.3734: 0.6266, and the density and viscosity of the aqueous solutions were measured at P = 100.5 kPa and T = (298.15–318.15) K. Based on these measurements, the excess properties of the system were calculated. Meanwhile, spectral analysis confirmed the formation of intermolecular hydrogen bonds among MDEA, PEG300, and H₂O. Building on these findings, the influence of water content on the cyclic CO 2 absorption performance of the H₂O + (PEG300 + MDEA) system was systematically investigated, with particular emphasis on the regeneration behavior at 15 wt% MDEA concentration. Furthermore, the underlying mechanism of the cyclic CO₂ absorption process was elucidated using multiple analytical techniques. These insights provide certain theoretical support for the industrial application of PEG300 + MDEA aqueous systems in CO 2 capture.
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高影响因子
RARE METALS
·
2026
·Vol. 45
·期 8
·e70443
·
IF 12.1
Weinan Yao,Wenzhuo Sun,Mengjiao Wu,Nana Li,Wenting Li,Xiaotian Guo,Bin He,Huan Pang
en This link goes to a English section zh This link goes to a Chinese section A facile coprecipitation-pyrolysis strategy was employed to fabricate Cu/Co nanoparticles (NPs) embedded in nitrogen-doped carbon matrices (Cu/Co@N-C) through the carbonization of CuCo-MOF precursors. Moreover, monometallic counterparts of Cu@N-C and Co@N-C were also prepared via carbonization of bimetallic CuZn-MOF and CoZn-MOF, respectively. Electrochemical tests confirm that Cu acts as the key active center for nitrite oxidation. By adjusting the Cu/Co molar ratios, a series of cubic Cu/Co@N-C composites with tunable sizes of 200–500 nm were achieved. The synergistic interaction between metallic Cu/Co NPs and the conductive N-C framework enhances catalytic activity and reduces overpotential compared to the monometallic Cu counterpart. The optimized Cu/Co@N-C/glass carbon electrode (GCE) sensor delivered a superior sensitivity as high as 0.461 μA μM −1 cm −2 and wide detection range of 2–10000 μM. The Cu/Co@N-C/GCE sensor also demonstrated superior selectivity, long-term stability of 92.5% retention after 21 days, and reproducibility. This work establishes a versatile approach for engineering various MOF-based catalysts, demonstrating promising potential for applications in environmental monitoring and food safety analysis. 摘要 en This link goes to a English section zh This link goes to a Chinese section 采用一种简便的共沉淀–热解策略 , 以 CuCo-MOF 前驱体为碳源进行碳化 , 成功制备了氮掺杂碳基质负载的 CuCo 双金属纳米颗粒复合材料(Cu/Co@N-C)。此外 , 还分别基于双金属CuZn- MOF和CoZn-MOF碳化制备了Cu@N-C和Co@N-C。电化学测试表明Cu是亚硝酸盐氧化的关键活性中心。通过调控 Cu/Co 摩尔比 , 获得了粒径可调、尺寸范围为 200–500 nm 的立方体 Cu/Co@N-C 复合材料。与单金属Cu@N-C相比 , 金属Cu/Co NPs与导电N-C框架之间的协同作用增强了催化活性并降低了过电位。优化后的 Cu/Co@N-C/玻碳电极(GCE) 传感器表现出优异的电化学传感性能 , 其灵敏度高达 0.461 μA μM −1 cm −2 , 检测范围宽达 2–10000 μM。Cu/Co@N-C/GCE 传感器还展现出优异的选择性、良好的重复性以及长期稳定性 , 在存放21天后仍可保持 92.5% 的电流响应。该工作为构筑各种MOF 基催化材料提供了一种通用策略 , 显示出其在环境监测与食品安全分析领域的广阔应用前景。
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高影响因子
IONICS
·
2026
·
IF 3.4
Shang Dong,Ju Xiaocheng,Jia Feiyang,Pan Yuede,Muhammad Naik,Zhang Guoli,Yang Zhewei,Li Gang,Wang Congwei
This work reports the preparation of N/S co-doped titanium dioxide (N/S-TiO 2 ) via in-situ sulfur doping assisted by alkaline hydrolysis followed by subsequent nitrogen doping and the lithium storage application. TiCl 4 is used as the titanium source, and sodium sulfide (Na 2 S) solution provides the alkaline hydrolysis environment and sulfur source, thus enabling the synthesis of S doped anatase TiO 2 (S-TiO 2 ). Urea is applied as the nitrogen source under high-temperature annealing, resulting in N/S co-doped anatase TiO 2 (N/S-TiO 2 ) materials. In addition, oxygen vacancies, which might enhance the electronic/ionic conductivity, is created. Consequently, N/S-TiO 2 (10:1) exhibits excellent rate performance (85.6 mAh g − 1 at 20 C) and long-term cycling stability (116.22 mAh g − 1 after 1500 cycles at 3 C). Further analysis using cyclic voltammetry (CV), galvanostatic intermittent titration technique (GITT), and electrochemical impedance spectroscopy (EIS) shows an enhanced pseudocapacitive contribution, increased lithium-ion diffusion coefficient, and reduced charge transfer resistance. These findings provide new insights for developing high-performance, structurally tunable metal oxide anode materials.
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高影响因子
Membranes
·
2026
·Vol. 16
·期 7
·243
·
IF 4.2
Xinyue Ma,Yuan Li,Kuo Meng,Chengbo Kou,Binling Li,Zhonglei Zhu,Haojie Li,Zhihan Deng,Runze Yang,Hupeng Zhou,Xin Wang,Lang Luo,Fuming Chen,Chengding Gu,Yuxiao Zhang,Lu Guo
Capacitive deionization (CDI) is an environmentally advantageous desalination technology that is particularly suitable for the treatment of low- to medium-concentration saline water. Among different electrode materials, carbon materials are widely used due to their good electrical conductivity and high specific surface area, while they suffer from limited ion adsorption capacity. In this study, a cobalt/nitrogen-doped porous carbon fiber composite with Zn-induced porosity (CoNG@V@CNF), where “V” stands for “volatile pore-forming agent”, has been successfully prepared via electrospinning combined with a high-temperature carbonization process. The introduction of trace Co nanoparticles enhances the stability of porous graphene. In addition, N doping contributes to improved wettability and electronic conductivity, and the carbon fiber structure constructs a three-dimensional conductive network, providing fast channels for ion transport. Electrochemical tests show that the specific capacitance of CoNG@V@CNF reaches 252.76 F g−1, demonstrating its superior charge storage capability. Furthermore, this study achieved a high salt adsorption capacity of 58.28 mg g−1and a competitive desalination rate performance of 1.94 mg g−1min−1. After 40 cycles of testing, the salt adsorption capacity (SAC) remains at 56.72 mg g−1, demonstrating its high stability during multiple charging and discharging processes. This work provides a new design strategy for developing high-performance CDI electrode materials.
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PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Yufeng Liu,Xiaofan Yang,Jinghua Hu,Junhao Liu,Peiwen Wu,Huifang Cheng,Huaming Li,Jixing Liu,Wenshuai Zhu
The hydroisomerization of isobutane is of considerable practical significance for the development of low-carbon and high-efficiency ethylene production technologies. However, conventional noble metal-solid superacid catalysts used for this reaction suffer from drawbacks including high cost and catalyst deactivation caused by the loss of halogen species and other active components. Herein, a series of highly dispersed W-Cu/Beta catalysts were designed and prepared via a facile ion-exchange method, and their catalytic performances toward isobutane hydroisomerization were systematically investigated. The results show that the introduction of WO x species effectively suppresses strong Brønsted acid sites of the Beta zeolite and modifies the Brønsted/Lewis acid balance of W-Cu/Beta catalysts. Although both Brønsted and Lewis acid site concentrations decrease with increasing W loading, Brønsted acidity is reduced to a greater extent, resulting in a lower Brønsted/Lewis acid site ratio. This acidity regulation is associated with suppression of undesired cracking reactions and improved selectivity toward n-butane. Under reaction conditions of 2 MPa, 380°C, and a weight hourly space velocity of 2.0 h ‒1 , the 5%W-Cu/Beta catalyst exhibits the best catalytic performance with isobutane conversion of 62.3% and n-butane yield of 32.4%. This enhanced catalytic behavior is attributed to optimized acidity and an appropriate distribution of catalytic active sites. Kinetic analyses indicate that WO x introduction alters the apparent kinetic behavior of the catalysts and is accompanied by an increase in apparent activation energy. The improved catalytic selectivity is correlated with changes in acidity distribution and suppression of cracking pathways rather than direct evidence of carbocation stabilization.
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Runduo Teng,Changhao Feng,Yanting Wang,Wenjun Tu,Tianyu Lan,Qiyuan Fu,Jingyu Long
N-butanol is widely used in fields such as chemical engineering and pharmaceutical synthesis; therefore, trace-level, highly sensitive detection of n-butanol is of great significance. In this study, an n-butanol gas sensor based on silver (Ag)-decorated yttrium ferrite (YFeO 3 ) nanotubes was fabricated using the electrospinning followed by the impregnation method. Compared with the pure YFeO 3 , the Ag-decorated YFeO 3 nanotubes exhibited an enhanced response of 162.06 toward 10 ppm n-butanol. This remarkable gas-sensing performance is primarily attributed to the synergistic effects of the mixed-valence states of iron, abundant surface oxygen vacancies, and the Ag spillover effect. Moreover, it exhibits excellent long-term stability and a detection limit as low as 76.5 ppb. These results indicate that Ag-decorated YFeO 3 nanotubes hold significant potential for trace n-butanol detection.
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危险品化学品经营许可证（带存储）