ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Nan Wang,Shaobo Ma,Jizhou Duan,Xiaofan Zhai,Fang Guan,Xiutong Wang,Baorong Hou
The electrochemical synthesis of hydrogen peroxide (H 2 O 2 ) based on 2-electron oxygen reduction reaction (ORR), is a particularly promising alternative route for in-situ application. Herein, we prepared the oxidized graphene aerogel supported cubic manganese carbonate composites (GO x /MnCO 3 ) with different GO and MnCO 3 ratio through a simple co-precipitation/in-situ coating method. The GO x /MnCO 3 composites, with uniformly wrapping of GO on the surface of MnCO 3 cubic, display high conductivity and abundant catalytic sites for 2-electron ORR. The G 0.2 M shows the best ORR catalytic performance, onset potential of 0.635 V RHE , high H 2 O 2 production selectivity and high stability in 3.5% NaCl electrolyte. Based on this, G 0.2 M as oxygen reduction electrocatalyst , has good antibacterial effect at 0.55 V RHE on the stainless-steel. The antibacterial mechanism is mainly due to the electrocatalytic oxygen reaction of H 2 O 2 and the side reaction of •OH and O 2 •- . This provides an impressive, effective and environmentally friendly electrochemical approach for antibacterial and antifouling applications.
研究领域:
材料科学
·
电化学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
NANO
·
2022
·
IF 1.438
Kaiyue Liang,Mingcai Yin,Yixian Li,Yaoting Fan,Zhongjun Li
CdS and MoS 2 are both promising photocatalytic materials for hydrogen production and lots of MoS 2 /CdS composites have been investigated. However, most of the previous work focused on relatively stable hexagonal CdS; researches on cubic CdS are still rare mainly due to its unstability. Then in this paper, a ternary composite MoS 2 /CN/CdS composed of cubic CdS, MoS 2 and graphitic carbon nitride (g-C 3 N 4 , abbreviated as CN) was prepared by simple in situ precipitation of cubic CdS on MoS 2 /CN at room temperature. Based on a series of characterizations, the photocatalytic hydrogen production performance of MoS 2 /CN/CdS was studied. The results showed that when the amount of MoS 2 /CN was 10 wt.%, the activity reached 1253.2 μ mol h − 1 , about 110 times that of pure CdS. Especially, its stability was investigated in detail by cyclic hydrogen production tests, which indicated that although the activity decreased after the first cycle, it was stable in the following three cycles mainly due to the existence of CN. Namely, a relatively stable and high performance cubic CdS-based ternary composite was achieved. This research can provide some new insights into the design of cubic CdS-based photocatalysts.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2014
·Vol. 3
·期 4
·1696-1702
·
IF 0
Zhonghui Han,Gang Chen,Chunmei Li,Yaoguang Yu,Yansong Zhou
The one-dimensional (1D) cubic Cd0.8Zn0.2S solid-solution nanowires are first prepared by the “levelling effect” of thioglycolic acid (TGA) in a solvothermal process. It exhibits the enhanced transfer and separation efficiency of carriers to improve the photocatalytic H2-production activity. TGA not only serves as the sulphur source but also plays a template medium agent role. Furthermore, no TGA selectivity for diverse solvents to prepare 1D Cd0.8Zn0.2S solid solutions suggests that it also may be extended to the preparation of other 1D metal sulphide solid solutions in diverse solvents.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
CHEMISTRY-A EUROPEAN JOURNAL
·
2024
·
IF 3.9
Jieli Guo,Mengli Ye,Xiujing Xing,Yaokang Lv,Wei Xiong,Hao Li
A series of CoFe2O4 materials derived from metal-organic framework were successfully constructed by the solvent-thermal method. The morphology of a typical sample CoFe2O4-1 was mostly in the form of a cubic rod-like structure with a size distribution of 3.2 ± 0.2 μm, while a small amount of the structure presented hexagonal shape with uniform size dispersion. The XPS characterization results confirmed that the CoFe2O4-1 material contained Co3+ (Co2+/Co3+ = 0.98), and the redox reaction between Co2+ and Fe3+ produced more Fe2+ (Fe2+/Fe3+ = 1.63), leading to the production of more OV on the surface of the CoFe2O4-1 material (OV% = 0.34), thereby facilitating the efficient adsorption of the efficient adsorption of heavy metal ions (HMIs). CoFe2O4-1/GCE as a typical electrode presented excellent performance for the detection of multiple HMIs. The results should be attributed to the good electrical conductivity and large electrochemically active surface area of CoFe2O4-1/GCE, accelerating the transport of ions and charges in the system. Interestingly, there are interaction mechanisms between the HMIs when performing simultaneous detection, suggesting the detection of target ions can be facilitated by adding additional ions. This study provides new research insights for the development of highly sensitive electrochemical sensors for real-time environmental monitoring.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Composites and Hybrid Materials
·
2024
·Vol. 7
·期 6
·1-14
·
IF 23.2
Qiu Jiahang,Zhang Mu,Zhao Rongzhi,Sun Xudong,He Dianning
The quest for broadband electromagnetic wave absorption to satisfy the demands of various fields has emerged as a prominent research focus in the domain of electromagnetic wave absorption. By considering the effects of magnetic loss and polarization loss across different frequency bands, the development of composite materials incorporating magnetic metal particles and single metal atoms may facilitate an expansion of the electromagnetic wave absorption frequency range. Consequently, we synthesized FeCo@C/Ni@C composites derived from FeCo Prussian blue analogues and polydopamine through wet chemistry and pyrolysis methods. The chelation mechanism of polydopamine, combined with the physical barrier effect provided by Zn ions during synthesis, endows the FeCo@C/Ni@C composite with low-frequency magnetic loss characteristics from the FeCo alloy, high-frequency dipole polarization losses attributed to Ni atoms, and conductivity losses arising from the coupled carbon matrix. Ultimately, the composite exhibits exceptional electromagnetic wave absorption performance: at a thickness of 2.26 mm, it achieves a minimum reflection loss value of − 50.1 dB along with an effective absorption bandwidth reaching up to 6.0 GHz. In summary, this work presents a novel strategy for enhancing broadband absorption capabilities in electromagnetic wave absorbing materials.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
CEMENT AND CONCRETE RESEARCH
·
2026
·
IF 14
Liheng Zhang,Zichen Lu,Ye Pan,Zhenping Sun
Effect of polycarboxylate superplasticizer (PCE) on cubic C 3 A's (cub-C 3 A) hydration was investigated by using calorimetry, TOC analysis, ICP-OES, etc. With the increased acid-to-ether ratio (A/E) of PCE, a first acceleration and then retardation effect on cub-C 3 A's hydration is found, which is caused by the competitive adsorption between PCE and Ca-Ŝ ion pairs and the correspondingly different effects on cub-C 3 A's dissolution. The increased A/E enhances PCE's adsorption amount. However, PCE's adsorption could either promote or retard cub-C 3 A's hydration depending on PCE's molecular structure. Specifically, PCE with an A/E of 2 could hinder the adsorption of Ca-Ŝ but does not effectively block cub-C 3 A's dissolution as that of Ca-Ŝ ion pairs due to the formed loose adsorption layer. The A/E of 6 further decreases the adsorption of Ca-Ŝ ion pairs and accelerates cub-C 3 A's hydration. Along with the further increased A/E, a compact adsorption layer can be formed, which could hinder cub-C 3 A's dissolution and retard its hydration.
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 12
·1-14
·
IF 2.8
Mei Rui,Yan Feng,Hu Sizheng,Gong Zonggui,Guo Haoxuan,Wang Qijing,Zheng Xinghua
With the increasingly urgent safety requirement of lithium-ion batteries, more and more attention has been paid to Li 7 La 3 Zr 2 O 12 (LLZO)-based solid electrolytes with high ion conductivity and excellent electrochemical performance. Unfortunately, owing to the serious “Li-loss” and the abnormal grain growth (AGG) during the long-time high-temperature sintering process, it is difficult to achieve the high-quality LLZO electrolyte with uniform and fine grains, high density and excellent electrochemical performance. In this work, Ga/Mo co-doped LLZO solid-state electrolytes have been prepared by traditional sintering (TS) and two-step sintering (TSS). And the sintering mechanism, phase stability, microstructure evolution, and electrochemical performance have been systematically investigated. A small amount of Ga/Mo doping not only promotes the formation of the cubic garnet LLZO phase, but also enhances the stability of cubic phase. High density of 92.3% and uniform microstructure without AGG have been achieved via a small amount of Ga doping and TSS. Li 6.3 Ga 0.1 La 3 Zr 1.8 Mo 0.2 O 12 electrolytes, prepared by TSS of 1200 °C/15 min-1100 °C/8 h, exhibits high ion conductivity of 2.59 × 10 –4 S·cm −1 and critical current density (CCD) value of 0.5 mA·cm −2 , low electric conductivities of 4.77 × 10 –9 S·cm −1 , which suggests it is a potential electrolyte to apply in all-solid-state batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2017
·
IF 13.942
Peili Lou,Zhonghui Cui,Zhiqing Jia,Jiyang Sun,Yingbin Tan,Xiangxin Guo
In search of new electrode materials for lithium-ion batteries, metal phosphides that exhibit desirable properties such as high theoretical capacity, moderate discharge plateau, and relatively low polarization recently have attracted a great deal of attention as anode materials. However, the large volume changes and thus resulting collapse of electrode structure during long-term cycling are still challenges for metal-phosphide-based anodes. Here we report an electrode design strategy to solve these problems. The key to this strategy is to confine the electroactive nanoparticles into flexible conductive hosts (like carbon materials) and meanwhile maintain a monodispersed nature of the electroactive particles within the hosts. Monodispersed carbon-coated cubic NiP2 nanoparticles anchored on carbon nanotubes (NiP2@C-CNTs) as a proof-of-concept were designed and synthesized. Excellent cyclability (more than 1000 cycles) and capacity retention (high capacities of 816 mAh g–1 after 1200 cycles at 1300 mA g–1 and 654.5 mAh g–1 after 1500 cycles at 5000 mA g–1) are characterized, which is among the best performance of the NiP2 anodes and even most of the phosphide-based anodes reported so far. The impressive performance is attributed to the superior structure stability and the enhanced reaction kinetics incurred by our design. Furthermore, a full cell consisting of a NiP2@C-CNTs anode and a LiFePO4 cathode is investigated. It delivers an average discharge capacity of 827 mAh g–1 based on the mass of the NiP2 anode and exhibits a capacity retention of 80.7% over 200 cycles, with an average output of ∼2.32 V. As a proof-of-concept, these results demonstrate the effectiveness of our strategy on improving the electrode performance. We believe that this strategy for construction of high-performance anodes can be extended to other phase-transformation-type materials, which suffer a large volume change upon lithium insertion/extraction.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Carbohydrate Polymer Technologies and Applications
·
2025
·
IF 6.5
Mubarak G. Bello,Shiyu Huang,Zifan Qiao,Zhenhua Chen,Lihua Chen
Luteolin (LT), a biologically active flavonoid with potent anti-inflammatory properties, faces significant limitations due to its instability, poor absorption, and low bioavailability. To overcome these challenges, this study explores the encapsulation of LT within nanosheet and cubic γ-cyclodextrin-based metal-organic frameworks (N-MOF and CD-MOF). This approach achieved a two-fold improvement in LT loading efficiency compared to previously reported methods. A critical finding was the identification of pH as a key factor in optimizing the loading process, which significantly enhanced encapsulation efficiency. The resulting LT/N-MOF and LT/CD-MOF formulations demonstrated improved photo-stability and thermal stability, alongside significantly enhanced cellular permeation. In vitro studies revealed remarkable anti-inflammatory properties of these formulations. Moreover, the bioavailability of LT was increased by 6-fold compared to pure luteolin. In a rat paw edema model, the optimized LT/CD-MOF and LT/N-MOF formulations exhibited 4.86- and 5.4-fold improvements in anti-inflammatory activity, respectively, over pure luteolin. These results underscore the potential of CD-MOFs as effective delivery systems for enhancing the therapeutic efficacy of luteolin.
研究领域:
药剂学
·
材料科学
·
炎症研究
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Yanqing Liu,Su Yao,Gengxin Hu,Yinjian Ye,Hongwu Wang
Novel electrochemical sensors constructed using CuCo bimetallic nanoparticle-dispersed cubic mesoporous carbon (CMK-8) were applied to determine cyadox (CYA). The nanostructure of CuCo@CMK–8 was characterized by scanning electron microscopy and energy-dispersive spectroscopy. The morphological characteristics of the bimetallic nanoparticles endowed the performed electrochemical sensors with large active regions and excellent electrical conductivity, which provided active reaction sites for the target analyte and improved the detection sensitivity of CYA. The performed sensors were investigated on the CYA detection by cyclic voltammetry and differential pulse voltammetry. Under optimal conditions, the peak currents of CYA on the modified electrode were linearly correlated with the concentration of CYA in the range of 0.001–3.0 μM. The limit of detection of CYA was 0.26 nM. For the first time, the performance of electrochemical sensors for detecting CYA was explored by reaction kinetics and thermodynamics of CYA on modified electrodes. In addition, the performed sensor was successfully applied to monitor CYA in real fish feed sample. This study presented a new approach in designing a low-cost sensitive electrochemical sensor on the basis of non-noble metals.
研究领域:
分析化学
·
电化学
·
纳米材料
·
食品安全
·
环境监测
·
药物残留检测
·
生物传感器
✓ 已验证
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2022
·
IF 6.364
Liang Cai,Guangfan Tan,Xin Hu,Zhen Shen,Li Wan,Yingchun Zhang
Li 2 TiO 3 is regarded as a vital tritium breeder candidate due to its favorable properties in Helium-Cooled Pebble Bed. However, the point contact stress breakage for traditional pebble structure can cause the blocking of tritium recovery system, and seriously reduce the safety and tritium self-sufficiency ability of fusion reactor. For addressing above problems, in this paper, complex-shaped Li 2 TiO 3 cubic units were manufactured firstly via lithography-based 3D printing . According to the principle of tritium transport, the cubic unit structures with ordered channels were built and evaluated by finite element analysis . The photocuring parameters were optimized to improve printing accuracy by establishing an overgrowth model. After optimizing the sintering schedule, the Li 2 TiO 3 cubic units with excellent relative density (92.3%TD) and packing factor (80.99%) were yielded, and it also had an outstanding compressive strength (84.4 MPa). The results of thermal cycling test shown that the Li 2 TiO 3 cubic units possessed a prominent thermal cyclic durability.
研究领域:
核工程
·
材料科学
·
增材制造
✓ 已验证
DOI
高影响因子
Materials
·
2025
·Vol. 18
·期 14
·3409
·
IF 3.2
Hongwei Huang,Haojun Liu,Yang Wang,Yi Li,Qian Li
Prussian blue analogs (PBAs) are widely recognized as promising candidates for aqueous zinc-ion batteries (AZIBs) due to their stable three-dimensional framework structure. However, their further development is limited by their low specific capacity and unsatisfactory cycling performance, primarily caused by phase transformation during charge–discharge cycles. Herein, we employed a high-entropy strategy to introduce five different metal elements (Fe, Co, Ni, Mn, and Cu) into the nitrogen–coordinated Masites of PBAs, forming a high-entropy Prussian blue analog (HEPBA). By leveraging the cocktail effect of the high-entropy strategy, the phase transformation in the HEPBA was significantly suppressed. Consequently, the HEPBA as an AZIB cathode delivered a high reversible specific capacity of 132.1 mAh g−1at 0.1 A g−1, and showed exceptional cycling stability with 84.7% capacity retention after 600 cycles at 0.5 A g−1. This work provides innovative insights into the rational design of advanced cathode materials for AZIBs.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
功能材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）