JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Qihua Liang,Guotao Lin,Junting Gao,Zequan Li,Qingge Feng
Formaldehyde is a ubiquitous indoor pollutant. Developing metal oxide semiconductors gas sensors for selective ppb-level formaldehyde detection is challenging. Therefore, developing gas sensors that can selectively detect indoor formaldehyde at ppb levels is important. In this study, outer-walled thin sheet-like microspheres of Ga-doped In 2 O 3 (Ga x In 2-x O 3 , x = 0, 0.1, 0.2, 0.3, and 0.4) were fabricated using a facile two-step synthetic method. The Ga 0.3 In 1.7 O 3 based sensor shows the response (556 ± 25) to 100 ppm formaldehyde at 80 °C, which is around 6.5 times that of the pure In 2 O 3 based sensor at 90 °C. Furthermore, it has fast response time (< 3 s), excellent selectivity (S Formaldehyde /S Ethanol = 160, S Formaldehyde /S Acetone = 267), good stability (at least 60 days), and ultra-low limit of detection (10 ppb) for formaldehyde at 80 °C. The improved formaldehyde sensing performance of Ga 0.3 In 1.7 O 3 microspheres is attributed to the optimization of surface chemisorbed oxygen, which is caused by Ga doping regulating the Fermi level of In 2 O 3 as well as an increase in the specific surface area.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale Research Letters
·
2018
·Vol. 13
·期 1
·1-10
·
IF 3.125
Lan Lifang,Li Sheng,Li Jun,Lu Lu,Lu Yan,Huang Si,Xu Shuaijun,Pan Chunyang,Zhao Fenghua
A sol-gel method was adopted to obtain LiNi 0.5-x Ga x Mn 1.5 O 4 ( x = 0, 0.04, 0.06, 0.08, 0.1) samples. The effect of Ga doping on LiNi 0.5 Mn 1.5 O 4 and its optimum content were investigated, and the electrochemical properties at room temperature and at a high temperature were discussed. The structural, morphological, and vibrational features of LiNi 0.5-x Ga x Mn 1.5 O 4 ( x = 0, 0.04, 0.06, 0.08, 0.1) compounds were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FT-IR). The XRD results demonstrate that all samples have a disordered spinel structure with a space group of Fd3m, and Ga doping restrains the formation of the Li x Ni 1-x O secondary phase. FT-IR analysis reveals that Ga doping increases the degree of cation disorder. The SEM results reveal that all samples possess a fine spinel octahedron crystal. The electrochemical performance of the samples was investigated by galvanostatic charge/discharge tests, dQ/dV plots, and electrochemical impedance spectroscopy (EIS). The LiNi 0.44 Ga 0.06 Mn 1.5 O 4 sample with the optimum content shows a superior rate performance and cycle stability after Ga doping, especially at a high discharge rate and high temperature. In addition, the LiNi 0.44 Ga 0.06 Mn 1.5 O 4 sample retained 98.3% of its initial capacity of 115.7 mAhg −1 at the 3 C discharge rate after 100 cycles, whereas the pristine sample delivered a discharge capacity of 87.3 mAhg −1 at 3 C with a capacity retention of 80% at the 100th cycle. Compared with the pristine material, the LiNi 0.44 Ga 0.06 Mn 1.5 O 4 sample showed a high capacity retention from 74 to 98.4% after 50 cycles at a 1 C discharge rate and 55 °C.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
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2021
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IF 6.901
Qi Zou,Qichi Le,Xingrui Chen,Yonghui Jia,Chunyan Ban,Tong Wang,Henan Wang,Ruizhen Guo,Liang Ren,Andrej Atrens
This paper investigates the microstructure, corrosion, electrochemical behavior, and the discharge performance of Gallium (Ga) alloyed Mg-Al-Zn alloys using the gravimetric method, electrochemical measurements, and battery test. The average grain size of AZ80–2.5Ga (Mg-8Al-0.5Zn-2.5Ga alloy) is 36% smaller than that of AZ80 (Mg-8Al-0.5 Zn alloy). The number and size of the Mg 17 Al 12 phase particles are smaller and more homogeneously distributed. Ga reduces the self-corrosion rate, increases the electrochemical activity and the discharge performance. The grain refinement generates many grain boundaries on the surface and promotes discharge performance. The decrease of the self-corrosion rate is attributed to the suppression of the protective film that inhibits the anode consumption. The AZ80–2.5Ga anode has the optimal discharge capacity of 1437 mAh g − 1 and anode efficiency of 61% at 50 mA cm −2 , which are 25% and 29% higher than for the AZ80 anode.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
BIOMACROMOLECULES
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2017
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IF 5.246
Haijiao Zheng,Tenggao Zhu,Xiqian Li,Guan Wang,Qiong Jia
Biological-material-functionalized porous monoliths were prepared with lactoferrin and β-cyclodextrin via a click reaction. With the monolith as an extraction medium, a method combined with ICP-MS was developed for the determination of total gallium originating from metabolic residues of orally bioavailable gallium complexes with tris(8-quinolinolato)gallium (GaQ3) as a representative. The method exhibited favorable adsorption behaviors for gallium with high selectivity, low detection limit (2 ng L–1), and an enrichment factor of 29-fold with the sample throughput of 30 min–1. The developed approach was validated by the analysis of gallium from GaQ3 metabolic residues in a human cell line. Additionally, the practical applicability of this method was evaluated by the determination of gallium in human blood and urine samples from cancer patients. Results illustrated that the prepared monolith had potential in Ga-based anticancer drug analysis in complex biological samples.
研究领域:
分析化学
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生物医学工程
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药理学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 13
·7300-7313
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IF 14.511
Zhao Sun,Junpeng Liu,Rongjun Zhang,Yu Wu,Hongwei Li,Sam Toan,Zhiqiang Sun
Sorption-enhanced steam reforming of methanol (SE-SRM) is a promising approach to creating a high-purity hydrogen supply. However, catalysts suffer from activity deactivation and low CO2 uptake capacity. In this study, we investigate the role of Ga doping of Cu–MgO in SE-SRM by synthesizing a series of MgO embedded xGaCuMg catalytic sorbents via a sol–gel method. The TEM-EDX mapping results indicate that MgO nanoparticles can be successfully embedded in the bulk-phase of the catalytic sorbent with a stabilized microstructure. The results from in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) reveal that the Ga-doped catalytic sorbent is conducive to promoting the conversion of C-containing intermediates in SE-SRM, and absorbing CO2 in the form of bidentate carbonate rather than monodentate carbonate. Experimental studies verify that the best uptake capacity of 18GaCuMg catalytic sorbent (36.25 mg CO2/g MgO) achieves almost complete conversion of methanol (99.70%) with 100% H2 selectivity at 200 °C. Specifically, no CO is formed during the kinetic-control stage of SE-SRM. Density functional theory (DFT) calculations based on the Cu(111)Ga2O3(202)MgO(200) model revealed that the Ga doping can enhance the adsorption energies of methanol and carbon dioxide, promoting methanol activation and increasing CO2 uptake capacity. These findings provide valid strategies for functionalized nanomaterial design, which will substantially promote the SE-SRMR performance with desired catalytic sorbent recyclability.
研究领域:
材料科学
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催化化学
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能源工程
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry B
·
2021
·Vol. 9
·期 23
·4735-4745
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IF 6.331
Minqi Wang,Yiqi Yang,Guanghao Chi,Kai Yuan,Feng Zhou,Liang Dong,Haibei Liu,Qinghui Zhou,Weihua Gong,Shengbing Yang,Tingting Tang
Large bone defects face a high risk of infection, which can also lead to bone homeostasis disorders. This seriously hinders the bone healing process; therefore, the help of a dual-functional scaffold that has both anti-infection and bone-homeostasis-regulating capacities is needed in the treatment of infected bone defects. In this study, a 3D printed dual-functional scaffold composed of poly-ε-caprolactone (PCL), mesoporous bioactive glasses (MBG), and gallium (Ga) was produced. In vitro experiments demonstrated the excellent antibacterial ability of the PCL/MBG/Ga scaffold against methicillin-resistant Staphylococcus aureus (MRSA) and Escherichia coli (E. coli). The scaffold also significantly inhibited osteoclastic activity and promoted osteogenic differentiation. Furthermore, a rabbit model with an infected bone defect in the radius was used to evaluate the in vivo bone healing capability of PCL/MBG/Ga. The results demonstrate that the PCL/MBG/Ga scaffold can significantly accelerate bone healing and prevent bone resorption, suggesting its potential for application in repairing infected bone defects.
研究领域:
生物材料学
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骨科医学
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再生医学
✓ 已验证
DOI
PubMed
高影响因子
MOLECULES
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2024
·Vol. 29
·期 12
·2778
·
IF 4.2
Xi Zhu,Yong Guo,Baozhan Zheng
Efficient recovery of gallium (Ga) from vanadium slag processing residue (VSPR) solution is of great significance for environmental protection and resource utilization, but improving its selective adsorption against the coexisting Sc3+and In3+is still challenging. Herein, a novel adsorbent consisting of 4-amino-3-hydrazino-1,2,4-triazol-5-thiol (AHTZT)-modified graphene oxide (GO-AHTZT) was successfully synthesized that exhibits a higher adsorption selectivity for Ga3+in VSPR solution with coexisting Sc3+and In3+. Under optimal conditions, the adsorption capacity of GO-AHTZT for Ga3+can reach 23.92 mg g−1, which is 4.9 and 12.6 times higher than that for Sc3+(4.87 mg g−1) and In3+(1.90 mg g−1) adsorption, indicating the excellent anti-interference ability of GO-AHTZT against Sc3+and In3+. The process and mechanism of Ga3+adsorption onto GO-AHTZT was also studied and discussed in detail. By measuring the adsorption process and by characterizing the adsorbent before and after adsorption, we demonstrate that the selective interaction between the Ga3+- and N-containing groups in AHTZT is the main reason for the improved adsorption selectivity. This work opens up an avenue for the design and synthesis of highly selective adsorbents for Ga3+in complex VSPR solutions.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Dongming Duan,Song Liu,Tianhua Xiao,Aiju Lou,Haiyan Huang,Yu Cai,Zunlei Gong,Lei Zhou,Le Wang
The increased risk of diabetic fractures, driven by high oxidative stress and a proinflammatory response at the site of bone injury, remains a treatment challenge. Traditional internal fixation materials pose numerous limitations, prompting the emergence of new biomaterials as superior alternatives due to advancements in bone tissue engineering research. This study develops an injectable magnesium-gallate (MgGA) bioenzyme-reinforced hydrogel bone adhesive to remodel the local inflammatory microenvironment and enhance diabetic fracture healing. The MgGA bioenzyme significantly improves toughness and bone adhesive strength owing to its interaction with polymer chains. The MgGA-containing, catalyst-like injectable bone adhesive facilitates the scavenging of overexpressed reactive oxygen species, promotes macrophage polarization to the M2 phenotype, and attenuates early-stage inflammation. The pathological tissue microenvironment-responsive MgGA enables the self-sacrificial and sustained release of Mg 2+ and gallic acid, regulating redox balance and promoting angiogenesis and osteogenesis. The developed MgGA hydrogel serves as a promising multifunctional bone adhesive, offering fracture fixation and accelerating diabetic bone regeneration in vivo, thereby representing a novel strategy for treating diabetic fractures.
研究领域:
生物材料学
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骨组织工程
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再生医学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Zhanying Yu,Xiyu Wang,Xinlong He,Runjing Li,Aimin Zhang,Jihai Zhang
Zinc is an ideal energy storage material because of its low toxicity, nonflammability, and good biocompatibility. However, the commercial application is seriously hindered due to problems such as dendrite growth, hydrogen evolution, and interface passivation caused by “dead zinc” in the process of cyclic deposition. Herein, a nanoscale deposition dispersion model is designed in order to achieve directional deposition and uniform distribution of zinc ions for the growth of interfacial dendrites. Liquid metal GaIn was combined with Mxene for this nanostructure, which provides a rapid ion transfer channel to achieve lower overpotentials, a more uniform electric field distribution, and stronger corrosion resistance in a core–shell structure to achieve interface reaction suppression. The material was coated on the surface of the zinc metal as an artificial protective layer. It has a better cycle life at 1 mA·cm–2 compared with the bare Zn metal anode, achieving a long cycle time of 1100 h and an ultralow voltage lag (28.1 mV). It maintains the stability for 1000 cycles at 1 mA·cm–2 after assembling the complete battery. This provides a way to improve the performance of zinc-ion secondary batteries and paves the way for the next generation of energy storage devices.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLID STATE IONICS
·
2025
·
IF 3.3
Shihao Fu,Pingmei Li,Shiyu Yu,Yang Hu,Yibo Liu,Daming Chen,Yaqing Wei,Yuanxun Li,Yong Chen
The garnet-type Li 7 La 3 Zr 2 O 12 (LLZO) has garnered significant attention due to its superior thermal stability and broad electrochemical window. However, LLZO exhibits instability at room temperature and readily transforms from a cubic phase ( c -LLZO) to a tetragonal phase ( t -LLZO), resulting in issues such as low ionic conductivity. Herein, the effect of Ga doping on LLZO is investigated. Combined with SEM, activation energy, ionic conductivity and XRD refinement, the results demonstrate that Li 7-3x Ga x La 3 Zr 2 O 12 exhibits better properties when x = 0.25. Solid-state nuclear magnetic resonance (SSNMR) showed that Ga0.25-LLZO was favorable for promoting Li + transport. Moreover, Li| [email protected] |Li symmetric cells exhibit lower interfacial specific impedance (IASR) and higher critical current density (CCD) than both Li|Ag@Ga0-LLZO|Li and Li| [email protected] |Li and was stabilized at 0.15 mA/cm 2 for 1300 h of stable cycling. In addition, the all-solid-state battery Li| [email protected] |LFP was cycled at 0.2C for 100 cycles with 82 % capacity retention, demonstrating its promising application in lithium batteries.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Chang Jiang,Longxiang Jiang,Qianbiao Du,Linzhao Ma,Zhicong Chen,Hao Li
LiMg 6 GaO 8 ceramics were synthesized via solid-state reaction method. Systematic investigation reveals that samples sintered at 1260 °C demonstrate exceptional microwave dielectric properties (MDPs): ε r = 10.82, Q×f = 123,083 GHz, and τ f = −22.76 ppm/°C. P-V-L theory analysis indicates that Mg-O bonds dominate lattice energy (72.6 %), while Ga-O bonds contribute most to ionicity (35.7 %). Based on these excellent MDPs, the designed array dielectric resonator antenna (DRA) achieves significant gain and radiation efficiency. The unit DRA delivers performance with 5.78 dBi gain and more than 90 % radiation efficiency. Its breakthrough two-element array DRA boosts gain to 6.39 dBi, providing an improvement over conventional designs while maintaining high radiation efficiency.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL EDUCATION
·
2024
·
IF 2.5
Haibo Zhang,Qiong Ding,Ruohan Li,Weihong Chen,Peng Wang
Liquid metals are widely applied in various fields, including chemistry, catalysis, energy storage, chemical sensing, and stretchable electronics, due to their unique deformabilities. However, their behavior under a rod or ring electrode has never been analyzed. Furthermore, research on the deformation behavior of eutectic Ga–In (EGaIn), the most commonly used Ga-based liquid metal, under electric fields of varying intensities and shapes is lacking. Therefore, investigating the deformation behavior of liquid metals under electric fields is expected to contribute to the accurate regulation of their morphologies. To this end, herein, an electrochemical device was fabricated using EGaIn, and experiments were conducted by adjusting the potential and the cathode shape. Further, the mechanism of the deformation was analyzed in detail. When a potential was applied, EGaIn droplets deformed into fractal dendrites under circular, polygonal, and nonpolygonal electric fields. Dendrite symmetry was influenced by the cathode shape, as the resulting electric fields varied in shape. The results of this study will aid in precisely controlling the behaviors of LMs and their alloys using electric fields. This topic is suitable for upper-division undergraduates who possess a basic understanding of electrochemistry. Through these experiments, students may explore the effects of potential on the morphology of EGaIn and analyze experimental phenomena such as electrowetting, dendrite formation, and surface oxidation, thereby developing a preliminary understanding of interfacial tension and electrocapillarity. Additionally, these experiments encourage undergraduates to actively participate in laboratory work, which helps foster their enthusiasm for chemistry.
研究领域:
材料科学
·
电化学
·
物理学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）