APPLIED CATALYSIS B-ENVIRONMENTAL
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2020
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IF 16.683
Peng Du,Kailong Hu,Juan Lyu,Huanglong Li,Xi Lin,Guoqiang Xie,Xingjun Liu,Yoshikazu Ito,Hua-Jun Qiu
Materials co-design of the single-atom catalytic centers and the supports can push the limits of the emerging wearable metal-air batteries. The metal single-atom catalysts are required to be bifunctional with high efficient electrocatalytic activities for both oxygen reduction and evolution reactions (ORR and OER), and preferably non-noble. The supports, on the other hand, in addition to the requirements of being free-standing, flexible and porous, are required to strongly interact with the metal species to prevent their aggregation. However, satisfying these requirements simultaneously is yet challenging. Here, a free-standing 3D nanoporous holey graphene with both N and single-atom Mo dopants is prepared. The nanoholes are created by chemical vapor deposition method on nanoporous NiMo alloy templates with their surface decorated with catalytically inert SiO 2 nanoparticles . The edge-rich graphene induced by the nanoholes facilitates the doping of pyridinic N and single-atom Mo in the fringe near the edges. The resulting N and Mo co-doped nanoporous holey graphene exhibits high bifunctional ORR and OER catalytic activities in alkaline electrolytes. The synergetic effects between N and Mo dopants are also revealed by density functional theory calculations. When incorporated in a solid-state zinc-air battery, the battery is bendable and can be continuously discharged/charged for 88 h with a high power density of 83 mW cm −2 . This work provides an efficient route to design metal single atom/cluster doped 3D freestanding nanoporous graphene as flexible electrodes.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Wan-Juan Jiang,Haleema Sadia,Ding-Feng Yu,Pan-Feng Zheng,Ze-Hua Dong
Carbon fiber (CF) has been widely employed to enhance the mechanical properties of polymers owing to its superior chemical inertness , high tensile strength , and high conductivity. This study presents a surface chemistry-driven approach to enhance the corrosion resistance and mechanical performance of waterborne zinc-rich epoxy (ZRE) coatings by incorporating polydopamine (PDA)-coated carbon fibers (CF). The PDA layer, abundant in catechol and amine groups, facilitates dual interfacial bonding mechanisms—π-π stacking interactions and hydrogen bonding with the epoxy matrix . This synergistic interfacial engineering not only enhances the colloidal dispersion of CF but also results in an eightfold increase in adhesion strength and a 100 % improvement in tensile strength compared to the pristine ZRE coating. Additionally, the low-frequency impedance (|Z| at 0.01 Hz) is elevated by two orders of magnitude, and the cathodic protection duration provided by Zn is extended more than twofold relative to unmodified ZRE coating. These enhancements are attributed to two synergistic mechanisms: PDA-enhanced CF dispersion forming continuous conductive networks that facilitate electron transfer between zinc particles and the substrate, and amine-epoxy covalent bonding, constructing hierarchical barrier structures that hinder electrolyte penetration.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2025
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IF 14.3
Kang Wang,Zexin Liu,Lin Liu,Tiantian Wang,Kun Chen,Runhua Yao,Ruiqiang Hang,Xiaohong Yao
Zinc-based materials have been extensively researched as biodegradable bone repair materials in recent years, but their low degradation rate and limited bioactivity need to be further improved. In this study, a new-type dual-sized macro-micro porous Zinc-Magnesium-β-tricalcium phosphate (DMMP Zn-Mg-β-TCP) scaffolds were designed and fabricated by vacuum heating-press sintering. The mechanical properties, degradation behaviors, in vitro biocompatibility, in vivo osteogenesis, and biological safety of the scaffolds were systematically evaluated. The results show that DMMP Zn-Mg-β-TCP has suitable mechanical properties, degradation properties, and excellent osteogenic properties. The compressive yield strength range of the scaffolds is 12.90–25.46 MPa, and the elastic modulus range is 0.31–0.44 GPa, meeting the mechanical properties required for implant materials in cancellous bone. In vitro degradation tests showed that the corrosion rate of the scaffolds ranges from 2.25 to 2.61 mm/y. Furthermore, the scaffolds exhibited excellent in vitro cell compatibility. After a 24-week animal experiment, the scaffold demonstrated excellent osteogenic capacity during bone healing, while maintaining biomechanical stability throughout its degradation process. In summary, the DMMP Zn-Mg-β-TCP has the potential to become a novel biodegradable bone implant material.
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JOURNAL OF MATERIALS SCIENCE
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2025
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IF 3.9
Du Haoming,Wu Shenghao,Zhao Yuxuan
In this study, a series of non-equimolar ratio high-entropy rock-salt-type oxides (Mg, Co, Ni, Cu, Zn)O were prepared a high-temperature solid-phase method with tailored cation ratios, and their physical phase compositions and electrochemical properties were investigated. The result shows that (Mg, Co, Ni, Cu, Zn)O with varying elemental ratios form single-phase rock-salt structures when they are sintered at 1100°C under non-equimolar conditions. These oxides display a uniformly elemental distribution and irregular spherical particle morphology. With the increase in Ni or Co content, the electrochemical performance is significantly improved. Compared to the other six high-entropy oxides, (Mg0.1625, Co0.1625, Ni0.35, Cu0.1625, Zn0.1625)O powders have demonstrated excellent energy storage properties and rate capability, achieving a specific capacitance of 384.3 F/g at 1 A/g and a coulombic efficiency of 88.9%. These results demonstrate that non-equimolar (Mg, Co, Ni, Cu, Zn)O high-entropy rock-salt-type oxides have promising potential as advanced electrode materials. Graphical
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Yi Xiong,Xingxing Gu,Zixun Liu,Xiaolei Ren,Yanke Jiang,Hanyu Xu,Lin Zhuo,Guangming Jiang
Rechargeable aqueous-zinc ion batteries (AZIB) have notable benefits in terms of high safety and low cost. Nevertheless, the challenges, such as dendrite growth, zinc anode corrosion, and hydrogen evolution reaction, impede its practical implementation. Hence, this study proposes the introduction of an economical ErCl 3 electrolyte additive to stabilize the Zn anode surface and address the aforementioned issues. The introduced Er 3+ will cover the raised zinc dendrite surface and weaken the “tip effect” on the surface of the zinc anode via the “electrostatic shielding” effect. Simultaneously, the introduced Cl – can reduce the polarization of the zinc anode. Due to the synergistic effect of Er 3+ and Cl – , the zinc anode corrosion, dendrite growth and hydrogen evolution have been efficiently inhibited. As a result, the Zn||Zn-symmetric battery using ErCl 3 additive can stably cycle for 1100 h at 1 mA cm −2 , 1 mAh cm −2 , and exhibit a high average coulomb efficiency (99.2 %). Meanwhile, Zn||MnO 2 full battery based on ErCl 3 -added electrolyte also demonstrates a high reversible capacity of 157.1 mAh/g after 500 cycles. Obviously, the capacity decay rate of the full battery is also improved, only 0.113 % per cycle. This study offers a straightforward and economically efficient method for stabilizing the zinc anode and realizing high-performance AZIBs.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2023
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IF 7.2
Wan-Yue Xie,Chen Ling,Zhen-Yu Huang,Wei-Chang Chen,Shi-Fu He,Li-ping Si,Hai-Yang Liu
Rice husk (RH) is one of the most abundant biomass having a unique natural structure. Herein, the highly porous rice husk carbon material (RHC) has been prepared. After loading metal (Fe, Co, Mn, Cu) complex of tetra-phenylporphyrin (TPP) and the followed calcination , a new kind of metal-nitrogen-carbon (M-N-C) electrocatalyst (MTPP/RHC) for the oxygen reduction reaction (ORR) was obtained. It was found that all prepared catalysts showed good ORR performance and the activity follows an order of Fe > Co > Mn > Cu catalyst. The best FeTPP/RHC catalyst exhibited an ORR activity with a half-wave potential of 0.88 V (E onset = 0.96 V) and excellent long-term stability (97% retention after 30000s). In the constructed zinc-air battery, it even showed a higher specific capacity (766 mAh/g) and superior reversibility than commercial Pt/C catalysts. This work provides a new practical protocol for ORR electrocatalysts.
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Journal of Energy Chemistry
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2015
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IF 2.352
Xiaodong Wang,Xiaoxia Gao,Mei Dong,Hongbin Zhao,Wei Huang
Nano hierarchical mesoporous ZSM-5 catalysts were prepared with cationic dimethyldiallyl ammonium chloride acrylamide copolymer (PDDA) as a soft second template. Using ZSM-5 catalyst as a matrix, Zn/ZSM-5 catalysts were also obtained by the wet impregnation method. The effect of the PDDA amount and Zn loadings on the properties of the catalysts, including crystallinity , morphology, textural properties, acid nature and catalytic activity in MTG reaction, was investigated by XRD , FESEM , TEM, Nitrogen adsorption–desorption isotherms and NH 3 -TPD method, respectively. The MTG reaction was performed in a fixed bed reactor , and the result revealed that the nano hierarchical ZSM-5 catalyst prepared with a PDDA/Si molar ratio of 0.070 possesses longer stable phase of 70 h with a liquid hydrocarbon selectivity of 29.8%. Zn/ZSM-5 catalyst with a Zn/ZSM-5 ratio of 0.07 wt.% shows the highest liquid hydrocarbon selectivity, reaching 62.5%.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Dawei Liu,Katam Srinivas,Xin Chen,Fei Ma,Xiaojuan Zhang,Xinqiang Wang,Bin Wang,Yuanfu Chen
It is still challengeable but significant to rationally develop dual-metal single-atom catalysts with rich accessible active sites and excellent intrinsic catalytic activity towards oxygen reduction reaction (ORR). Herein, we present a novel dual-metal single-atom catalyst, Fe and Zn single atoms homogenously anchored on carbon nanotubes inlaid N, S-doped hollow carbon polyhedrons (FeZn-NSC), synthesized by facile iron-salt impregnation and high-temperature pyrolysis for zeolitic imidazolate framework-8. Due to the synergistic effects of the hierarchical porous nanoarchitecture with high specific surface area (795.48 m 2 g −1 ), N, S co-doped hollow carbon polyhedrons, in-situ grown highly conductive carbon nanotubes, and high loading of dual-metal single-atoms of Fe (3.12 wt%) and Zn (3.71 wt%), the optimized FeZn-NSC delivers outstanding ORR performance with high half-wave potential of 0.87 V, low Tafel slope of 44.7 mV dec −1 , long-term durability, and strong tolerance of methanol crossover. This work provides a strategy to rationally design and facilely synthesize dual-metal single-atom catalysts with high ORR activity.
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LANGMUIR
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2025
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IF 3.9
Lina Jin,Baozhong Li,Xinye Qian,Hexiang Xu
Lithium–sulfur batteries (LSBs) are recognized as promising candidates for next-generation high-energy-density energy storage technologies due to their exceptionally high theoretical energy density (2600 Wh kg–1), low cost, and environmental sustainability. However, several challenges, including the polysulfide(LiPS) shuttle effect, the low conductivity of the sulfur cathode, and lithium dendrite growth, have significantly impeded their practical application. In this research, we developed a hierarchical porous Zn3V2O8 (ZVO) modified separator through the high-temperature calcination of a Zn–V-MOF precursor to effectively mitigate LiPS shuttle effects via a dual mechanism. The porous architecture of ZVO facilitates efficient adsorption and rapid conversion of polysulfides through both physical confinement and catalytic activity arising from vanadium’s multivalent states. Additionally, the nitrogen-doped carbon network enhances electrode conductivity while strengthening polysulfide anchoring. The performance of the ZVO-modified separator reveals an initial discharge capacity of 882.9 mAh g–1 at 0.5C with a sulfur loading of 2.8 mg cm–2, demonstrating retention at 541.2 mAh g–1 after 500 cycles-yielding a capacity retention rate of 61.3%. Notably, under commercially viable conditions (5 mg cm–2 sulfur loading and 0.1C), the battery exhibits stable cycling performance, underscoring the potential applicability of ZVO-based separators in practical high-energy-density LSB systems.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Ruifeng Shan,Runhua Yao,Hui Wang,Lin Liu,Yuyu Zhao,Xiaohong Yao,Yonghua Sun,Ruiqiang Hang
Zinc (Zn) is a promising biodegradable material, and have attracted widespread attention due to its befitting degradation rate compared to magnesium (Mg) and iron (Fe). However, the inferior mechanical strength of pure Zn limits its application for bone repair. Therefore, there is an urgent need to improve its mechanical properties , regulate its degradation rate, and endow it with optimal biocompatibility. The alloying of metallic elements and preparation of Zn-based composites can be a promising approach for this purpose. In this study, the pure Zn and Zn-3 wt%Fe-xHAP (x = 0, 5, 10, 15, 20 wt%) samples were fabricated by vacuum heating-press sintering. The microstructure, compressive mechanical property, in vitro degradation behavior, antibacterial property and in vitro cytocompatibility of different samples were investigated. We confirmed that the secondary phase Zn 13 Fe significantly improved the mechanical property, and micro-galvanic between Zn and Fe accelerated degradation of the samples. Compressive yield strength of all samples ranges from 85.65 MPa to 301.99 MPa, compressive elastic modulus varies between 8.26 GPa and 15.03 GPa, and corrosion rates are significantly improved which are about 0.005–3.065 mm/y. Moreover, Zn-3Fe-xHAP samples exhibited better biocompatibility and antibacterial property than pure Zn, especially the sample of Zn-3Fe-5HAP. In summary, biodegradable Zn-based composites prepared by vacuum heating-press sintering could be promising material for bone repair.
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CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Chao Yang,Sining Yun,Jing Shi,Menglong Sun,Nosheen Zafar,Asim Arshad,Yongwei Zhang,Lishan Zhang
The elaborate design of electrode materials plays a critical role in developing high-performance supercapacitors. In the present work, a convenient avenue is adopted to adjust the supercapacitive behavior of carbon-based electrodes by incorporating transition metals (Co, Nb, Mo, and Fe) into Co/Zn-ZIF derived nitrogen-doped porous carbon (NDPC). The experiment results demonstrated that incorporating transition metal species tuned the microstructure, nanoporous textures, and hydrophilicities of as-prepared Co-NDPC and M/Co-NDPC (M = Nb, Mo, or Fe), which further tailored their supercapacitive performance. Owing to the higher surface area, abundant pores, and superior wettability of Nb/Co-NDPC sample, the corresponding electrode showed the highest specific capacitance of 293 F g −1 at 0.5 A g −1 with an outstanding capacitance retention of 82% at 20 A g −1 . All the electrodes displayed remarkable stability over 15,000 charge–discharge cycles. The first-principle density functional theory (DFT) calculations revealed that the superior capacitive behaviors of Nb/Co-NDPC electrode could be attributed to the uneven electrostatic potential surface and robust K + ion adsorption ability. This work provides an elaborate strategy for designing novel and high-performance electrode materials by adopting DFT calculations for supercapacitors.
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Biomaterials Advances
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2025
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IF 6
Huiming Zhong,Yan Xu,Jiaqi Yang,Zeshe Chen,Min Cheng,Jingqi Zheng,Guangfeng Zhao,Pengchao Guo,Lei Zhang,Zhongru Gou,Guojing Yang,Jian Shen
Ca-silicate (CSi) bioceramics have garnered significant interest in bone tissue engineering but their multifunction and biodegradation are suboptimal for some emergent bone trauma conditions. Foreign ion doping and core-shell architectural design offer promising strategies to optimize osteogenic efficacy while precisely regulating degradation kinetics and biologically functional ion release. Herein we developed the core-shell porous bioceramics via coaxial nozzle system, featuring a P-doping wollastonite (CSi-P) core and Zn-doping wollastonite (CSi-Zn)/β-tricalcium phosphate (β-TCP) shells. A 10 % porogens in the shell layer would enable controllable micropore architecture. In vitro studies demonstrated that Zn doping could finely tune the CSi-shell degradation rates, governing both physical dissolution and sustained release of bioactive ions. The CSi-based components further exhibited superior biomimetic remineralization capability in simulated body fluid. Meanwhile, both P12@Zn8 and P12@Zn12 exhibited remarkable antibacterial potential against Gram-positive bacteria ( S. aureus ). In vivo mandibular defect experiments revealed that the CSi-Zn granules outperformed β-TCP counterparts in bone repair at 10 and 16 weeks interval. Notably, the P12@Zn8 formulation achieved optimal degradation-osteogenesis coupling, exhibiting enhanced trabecular bone formation and complete repair within 16 weeks. This core-shell design strategically balances tunable degradation with spatiotemporal bioactivity, and may provide a solution to the problem of matching the absorption time of the materials with the bone regeneration time in clinical practice. Our findings highlight the potential of compositionally graded core-shell bioceramics as next-generation bioactive implants for emergent bone trauma regeneration and repair.
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