ACS Biomaterials Science & Engineering
·
2023
·
IF 5.8
Yuan Wang,Zhongyuan Wu,Ting Wang,Weilong Tang,Tingting Li,Haiping Xu,Hui Sun,Yifan Lin,Bruna S. H. Tonin,Zhou Ye,Jing Fu
Photoactivating dental resin composites have been the most prevailing material for repairing dental defects in various clinical scenarios due to their multiple advantages. However, compared to other restorative materials, the surface of resin-based composites is more susceptible to plaque biofilm accumulation, which can lead to secondary caries and restoration failure. This study introduced different weight fractions (1, 2, 5, 10, and 15%) of magnesium oxide nanoparticles (MgONPs) as antibacterial fillers into dental resin composites. Multifarious properties of the material were investigated, including antibacterial activity against a human salivary plaque-derived biofilm, cytotoxicity on human gingival fibroblasts, mechanical and physicochemical properties as well as the performance when subjected to thermocycling aging treatment. Results showed that the incorporation of MgONPs significantly improved the composites’ anti-biofilm capability even at a low amount of 2 wt % without compromising the mechanical, physicochemical, and biocompatibility performances. The results of the thermocycling test suggested certain of aging resistance. Moreover, a small amount of MgONPs possibly made a difference in enhancing photoactivated polymerization and increasing the curing depth of experimental resin composites. Overall, this study highlights the potential of MgONPs as an effective strategy for developing antibacterial resin composites, which may help mitigating cariogenic biofilm-associated secondary caries.
研究领域:
牙科学
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材料科学
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纳米技术
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
CHEMICAL PHYSICS LETTERS
·
2021
·
IF 2.328
Guanfeng Tian,Youqing Wu,Shiyong Wu,Sheng Huang,Jinsheng Gao
In 2 O 3 , MnO/In 2 O 3 , and MgO/In 2 O 3 catalysts are synthesized by the co-precipitation method and investigated for CO 2 hydrogenation to methanol. The introduction of Mn and Mg oxides dramatically enhances the CO 2 adsorption capacity of In 2 O 3 . The changing trend of methanol selectivity is consistent with the CO 2 adsorption capacity. MnO/In 2 O 3 and MgO/In 2 O 3 catalysts show higher methanol selectivity compared with that of In 2 O 3 .
研究领域:
催化
·
化学工程
·
环境化学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Hongru Rao,Junyi Xiang,Lu Qiao,Xu Zhang,Wei Lv,Qingyun Huang,Xuewei Lv
The calcium‑magnesium composite roasting – acid leaching process represents a sustainable alternative for vanadium extraction from vanadium slag, yet its underlying mechanism remains insufficiently understood. This study systematically investigates the phase transformation and dissolution behavior within the FeV 2 O 4 –CaO–MgO system to clarify the role of MgO. Results reveal its critical dual role: it promotes the formation of acid-soluble calcium‑magnesium vanadate (Ca 5 Mg 4 V 6 O 24 ), yet concurrently facilitates the formation of insoluble magnesium‑iron vanadates (e.g., Mg 2 FeV 3 O 11 ), thereby severely compromising leaching efficiency. The formation of the low-melting-point compound CaMgV 2 O 7 can also inhibit extraction via phase encapsulation. As a result, vanadium recovery demonstrates a pronounced non-monotonic dependence on MgO content, with a well-defined efficiency maximum under optimal conditions. These findings elucidate the phase-transformation mechanism governing leaching performance and establish a fundamental basis for the rational design of efficient vanadium recovery processes.
研究领域:
冶金学
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湿法冶金
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材料科学
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无机化学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2016
·Vol. 51
·期 17
·8139-8147
·
IF 2.302
Sun W. Z.,Cheng J. G.,Huang Z. K.,Jiang Y.,Wu L. E.,Liu L. M.
When MgO+ZrO 2 were used as a sintering aid to SiC ceramics, it was found that ZrO 2 reacted with SiC and MgO to form ZrC and a magnesium silicate. This reaction may provide a new route to synthesize ZrC or prepare ZrC/SiC composites by reaction sintering using ZrO 2 , SiC, and MgO as starting materials. In the present work, formation process of the ZrC phase in the SiC–MgO–ZrO 2 system was addressed. Subsolidus phase relations at 1550 °C of the SiC–MgO–ZrO 2 system and the related SiC–SiO 2 –ZrC–ZrO 2 –MgO (Si–Zr–Mg–O–C) system were investigated.
研究领域:
材料科学
·
陶瓷工程
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产品关联
DOI
高影响因子
Nanoscale
·
2019
·Vol. 11
·期 45
·21917-21926
·
IF 6.97
Zhichao Lin,Jingjing Yan,Qingbin Cai,Xiaoning Wen,Hongye Dong,Cheng Mu
Co-modification of an electron transport layer (ETL) with metal oxides and organic molecules can optimize the structure of the ETL and improve the performance of perovskite solar cells (PSCs). Here, a sandwich-structured ETL consisting of MgO/SnO2/EA was designed by co-modifying a SnO2 ETL with magnesium oxide (MgO) and ethanolamine (EA). The device with an ETL modified with MgO and EA has excellent performance in enhancing electron transport and blocking holes. It also inhibits the formation of deep defect states and improves the stability of the device. The introduction of MgO effectively improves the open-circuit voltage (VOC) of the device, while EA increases the short-circuit current density (JSC). The optimal efficiency of the PSC using the ETL co-modified with MgO and EA is 20.23%, which is much higher than that of the device with the unmodified SnO2 ETL (17.94%). The method described here provides an effective way to develop high performance ETLs co-modified with metal oxides and organic compounds for perovskite-based optoelectronic devices.
研究领域:
材料科学
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能源科学
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产品关联
DOI
PubMed
高影响因子
Science Advances
·
2024
·Vol. 10
·期 10
·
IF 11.7
Liming Zheng,Sheng Zhao,Yixuan Li,Jiankun Xu,Wenjin Yan,Baosheng Guo,Jianbin Xu,Lifeng Jiang,Yifeng Zhang,Hui Wei,Qing Jiang
The emerging therapeutic strategies for osteoarthritis (OA) are shifting toward comprehensive approaches that target periarticular tissues, involving both cartilage and subchondral bone. This shift drives the development of single-component therapeutics capable of acting on multiple tissues and cells. Magnesium, an element essential for maintaining skeletal health, shows promise in treating OA. However, the precise effects of magnesium on cartilage and subchondral bone are not yet clear. Here, we investigated the therapeutic effect of Mg2+ on OA, unveiling its protective effects on both cartilage and bone at the cellular and animal levels. The beneficial effect on the cartilage-bone interaction is primarily mediated by the PI3K/AKT pathway. In addition, we developed poly(lactic-co-glycolic acid) (PLGA) microspheres loaded with nano-magnesium oxide modified with stearic acid (SA), MgO&SA@PLGA, for intra-articular injection. These microspheres demonstrated remarkable efficacy in alleviating OA in rat models, highlighting their translational potential in clinical applications.
研究领域:
医学
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生物材料学
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骨科
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产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Rongjun Wu,Lisheng Deng,Linfa Xiao,Pei Lu,Shusen Lin,Noriyuki Kobayashi,Mitsuhiro Kubota,Chao Wang,Hongyu Huang,Xianglong Luo
Mg(OH) 2 /MgO-based thermochemical energy storage (TCES) has garnered significant interest for its potential in moderate-temperature long-term thermal energy storage, which is crucial for the stable and efficient utilization of solar energy, due to its high energy storage density, low cost, and non-toxicity. However, its practical applications are limited by agglomeration and sintering issues, which decrease the dehydration/hydration rate and reduce durability. This study focuses on designing a MgO-based composite structure by in-situ casting MgO nanoparticles within the pores of nanoporous carbon (NC). The composites were synthesized by a calcination method. Their TCES performances were tested using a thermogravimetric analysis. The NC, with an average pore size of 14.1 nm, effectively confined the growth of MgO particles within its pores, thereby producing MgO particles with small size and uniform dispersion while maintaining a high proportion of MgO in the composite. Consequently, the composite demonstrated the fastest hydration, achieving a 98.7 % conversion ratio, which was 58.9 % higher than that of pure MgO. Meanwhile, the composite exhibited a high dehydration rate and a large heat storage density of 946.5 kJ/kg. Importantly, the composite showed excellent structural stability and exhibited good durability over 60 cycles, with a slight decrease (6.0 %) in heat storage density, whereas pure MgO showed a decrease of 63.1 %. The high energy storage density and superior durability of the developed composite, compared to existing Mg(OH) 2 /MgO-based materials, make it a promising candidate for TCES applications. This study offers a reference for the rational design of TCES materials with agglomeration inhibition and reaction activity.
研究领域:
储能技术
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材料科学
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纳米技术
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热能利用
·
复合材料
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Yabo Gao,Hang Li,Huicong Lei,Xin Wang,Ling Zhang,Haijun Zhang,Zhong Huang,Shaowei Zhang
Low-carbon MgO-CaO-C refractories are promising for clean steel refining, but their application is limited by CaO hydration and the deterioration of high-temperature performance caused by reduced carbon content. In this work, a CNTs/CaCO 3 co-coated MgO-CaO powder (CC-MCP) was successfully fabricated via a densified micro-zone deposition process employing MgO-CaO particles, polyethylene powder, and starch as materials. The as-prepared CC-MCP were incorporated into low-carbon MgO-CaO-C refractories to achieve a “two birds with one stone” effect, simultaneously enhancing both hydration resistance and high-temperature service performance. Compared to the control sample prepared with flake graphite as carbon source, the counterpart containing CC-MCP exhibited superior hydration resistance and high-temperature performances, including a 286% improvement in water vapor resistance, an increase of up to 209% in oxidation resistance, a 36% improvement in thermal shock resistance, and a reduction in slag penetration depth from 654 μm to 435 μm. This “two birds with one stone” strategy provides an effective and scalable route for developing high-performance ultralow -carbon MgO-CaO-C refractories for clean steel production, while simultaneously offering a practical solution to the hydration challenges faced by CaO-containing refractories under harsh storage and service conditions.
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DOI
高影响因子
Biomaterials Science
·
2020
·Vol. 8
·期 7
·1815-1829
·
IF 6.183
Ji Tan,Zixiao Liu,Donghui Wang,Xianming Zhang,Shi Qian,Xuanyong Liu
Multifarious strategies have been proposed to enhance the antibacterial ability of implant surfaces for preventing bacterial infection, however, developing facile and universal modification methods still remains extremely elusive. Herein, inspired by the fact that the electron transfer respiratory chain of bacteria is embedded in the membrane, we proposed a novel strategy of local alkalinity disturbing bacterial respiration to endow implant materials with antibacterial ability. As a demonstration, MgO was deposited on biomedical titanium via magnetron sputtering to regulate surface alkalinity. With the thickness of MgO films increasing, they exhibited an excellent antibacterial rate against both Gram-negative and positive bacteria. The antibacterial mechanism confirmed that the alkaline surface can disturb the bacterial respiration action via weakening the transmembrane proton concentration gradient, resulting in the blockage of energy metabolism and the increase of oxidative stress of bacteria. Cell experiments indicated that MgO films not only have no obvious cytotoxicity to osteoblast cells, but can also selectively kill bacteria and promote cell proliferation in the presence of both bacteria and cells. More importantly, the by-product of MgO was only the biocompatible Mg2+, reducing any concerns about potential toxic effects. Furthermore, sputtering alkaline MgO films was confirmed to work well on polyetheretherketone polymer and zirconia ceramic implants, which indicates that this strategy has broad prospects of clinical application for preventing implant-associated bacterial infection.
研究领域:
生物医学工程
·
微生物学
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产品关联
DOI
PubMed
高影响因子
Sustainable Chemistry and Pharmacy
·
2024
·
IF 5.5
Zhuoxi Li,Guangping Zhou,Shaoqu Xie,Xianwei Zheng,Chengshan Xie,Hao Huang,Wanli Zhang
The upgrading of acetone-butanol-ethanol (ABE) mixture from biomass to long-chain biofuels has aroused increasing attention since it is beneficial for alleviating energy crises and promoting high-value utilization of biomass. The main key to the ABE conversion is to find catalysts that are widely available and inexpensive. In this study, a simple way to prepare a low-cost highly dispersed Cu/MgO catalyst for ABE alkylation was proposed, resulting in C5–C11 molecules. The effects of experimental parameters such as reduction method, copper loading, reaction time, reaction temperature, and gas atmosphere on the production of long-chain products were also investigated. Compared to using hydrogen gas for reduction, the use of sodium borohydride in methanol results in the highest long-chain product yields. A copper loading of 2.5% or 5% is optimal, while an excessive copper load causes its aggregation. Within 18 h, the longer the reaction time, the higher the total yield and the higher the proportion of long-chain products. When the temperature increases from 250 °C to 300 °C, the total yield increases while the proportion of by-products decreases. The nitrogen atmosphere is conducive to increasing total production as hydrogen can cause the loss of acetone via hydrogenation.
研究领域:
生物化学
·
能源科学
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2020
·
IF 3.83
Gang Liu,Jia Dong,Leiyang Zhang,Linjiang Yu,Fangbin Wei,Yang Li,Jinghui Gao,Jinzhu Hu,Yan Yan,Quan Li,Kun Yu,Li Jin
A B-site acceptor doping strategy has been employed to fabricate Na 0.25 Sr 0.5 Bi 0.25 TiO 3 (NSBT- x M) relaxor dielectric ceramics for the purpose of obtaining predominant energy storage properties for pulsed power capacitor applications. MgO was selected as the acceptor additive, and the corresponding ceramics were designed and prepared by traditional preparation method of electronic bulk ceramic. The influence of MgO on the micro structure, surface micromorphology, the variation of dielectric properties and storage of electrical energy, and also the mechanism of the NSBT- x M samples were deeply and systematically studied. The substitution of Ti 4+ by Mg 2+ at B-site induces point defects companied with defect diploe P D , which influences the electrical properties dramatically. Appropriate amount of MgO can significantly increase the electrical breakdown strength and reduce P r , which is conducive to the improvement of energy storage performance. Particularly, the NSBT-0.25 M sample exhibits both high W rec (2.06 J/cm 3 ) and excellent efficiency (84%) spontaneously. It also exhibits fantastic frequency stability, fatigue endurance, and excellent charge and discharge performance.
研究领域:
材料科学
·
电子陶瓷
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产品关联
DOI
高影响因子
ACS Applied Electronic Materials
·
2025
·
IF 4.7
Nasi Wei,Huawei Lei,Yu Du,Zefeng Ou,Xi Chen,Chen Xia,Xunying Wang,Baoyuan Wang,Guokun Ma,Jinming Guo,Hao Wang,Wenjing Dong
Owing to the resistance switching behavior, memristors have been proven to have significant potential applications for memories and biological nociceptor simulation. Oxygen vacancy is one of the key factors influencing the resistance switching behavior of oxide-based memristors, and its concentration significantly impacts both the switching voltage and the cycling stability of the memristor. In this study, the concentration of oxygen vacancy is synergistically modulated by introducing Li doping into MgO as well as an AlOx interlayer by using Al as the top electrode. The effects of different Li-doping concentrations on the performance of the MgO-based memristors are investigated. It is found that a moderate amount of Li doping optimizes the oxygen vacancy concentration of MgO, thereby enhancing its cycling stability and enabling a low SET voltage. The device exhibits a retention of 104 s at 358 K and is capable of operating at temperatures as low as 100 K. The resistance switching mechanism of the device assisted by the AlOx interlayer is discussed. The synaptic plasticity, including long-term potentiation/depression, paired-pulse facilitation, and spike-timing-dependent plasticity, is investigated. Biological nociceptor behaviors, such as threshold, relaxation, and sensitization, have been successfully simulated by the Li-doped MgO-based memristor. These studies not only offer alternative approaches for designing future electronic devices but also serve as a reference for utilizing memristors in bionic applications.
研究领域:
忆阻器器件
·
神经形态工程
·
仿生电子学
·
阻变存储器
·
神经科学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）