JOURNAL OF SOLID STATE CHEMISTRY
·
2021
·
IF 3.498
Mei Yan,Wen-Dong Yao,Wenfeng Zhou,Wenlong Liu,Ru-Ling Tang
Inorganic gallates are attractive owing to their abundant structures and wide applications for nonlinear optics, magnetism , molecular sieve and catalysis. Herein, a new cesium cadmium gallate, CsCdGa 3 O 6 , has been synthesized by a solid-state reaction, which is the first I-II-III-O (I = alkali metals, II = divalent metals, III = Al, Ga, In) type oxide. It crystallizes in the centrosymmetric space group P 2 1 / c , and the three-dimensional Ga–O polyanionic framework is constructed by [Ga 4 O 14 ] 16− helical belts linked [Ga 6 O 6 ] 6+ and [Ga 8 O 8 ] 8+ cages. Thermal analysis indicates that it possesses high thermal stability. Various characterizations and results analysis including XRD , TG-DSC, IR, Raman spectrum , as well as electronic structure calculations were performed.
研究领域:
无机化学
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材料科学
✓ 已验证
DOI
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 11
·2331
·
IF 4.6
Ajeesh Kumar Somakumar,Ivo Romet,Agnieszka Grabias,Marcin Kruk,Shusaku Hayama,Damian Wlodarczyk,Justyna Barzowska,Yadhu Krishnan Edathumkandy,Eduard Feldbach,Puxian Xiong,Yaroslav Zhydachevskyy,Monika Trzaskowska,Hanka Przybylinska,Andrzej Suchocki
An extensive experimental study of trivalent iron (Fe3+) ions in orthorhombic lithium gallate nanocrystals was undertaken. Various spectroscopic methods, such as Raman spectroscopy, extended X-ray absorption fine structure, the Mössbauer effect, electron paramagnetic resonance, photoluminescence, thermoluminescence, and cathodoluminescence were used to investigate the synthesized phosphor. This study revealed the existence of multiple Fe3+sites, out of which the tetrahedral sites are preferentially occupied. Extensive optical studies showed that the Fe3+doped lithium gallate phosphor is a promising candidate for various luminescence and thermoluminescence-related applications in the near-infrared regime.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLID STATE SCIENCES
·
2021
·
IF 3.059
Hongliang Shen,Jia He,Xiaoqiang Shao,Qin Su,Donglin Zhao,Shaojie Feng
The modified ZnGa 2 O 4 microspheres were prepared by the conventional hydrothermal method and used to catalyze methane combustion reaction. Because Co 2+ and Zn 2+ have similar ion radii, so it seems that the Zn 2+ at the tetrahedral (T d ) position of ZnGa 2 O 4 was partially replaced by Co 2+ to adjust the oxygen distribution, and finally the Zn 1-x Co x Ga 2 O 4 (x = 0.1, 0.3) microspheres catalysts was obtained. X-ray photoelectron spectroscopy (XPS) analysis exhibited that Co 3+ were present in the Zn 1-x Co x Ga 2 O 4 (0.1, 0.3) samples, and interstitial oxygen were formed to maintain electrical neutrality. Oxygen temperature programmed desorption (O 2 -TPD) profiles showed that there was only one oxygen species desorption from ZnGa 2 O 4 sample, while the Zn 1-x Co x Ga 2 O 4 (0.1, 0.3) samples had two oxygen desorption peaks, that is the first one is surface adsorbed oxygen, the second is lattice oxygen. The catalytic methane combustion performance of the samples indicated that the partial substitution of Co 2+ for Zn 2+ in ZnGa 2 O 4 can effectively improve its activity.
研究领域:
材料科学
·
催化化学
✓ 已验证
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2025
·
IF 6.7
Yang Feng,Yuxian Zhou,Xinyi Yang,Zili Huang,Jiaxi Hu,Yi Lv
With the growing demand for highly efficient sensors capable of rapid and reliable detection of trap states in semiconductors, developing novel chemical and physical phenomena induced by trap states at nanomaterial interfaces has thus emerged as a critical technological field. Herein, we developed an innovative time-dependent chemiluminescence (CL) method for evaluating trap states in semiconductor materials. By leveraging the unique trap states of Cr3+-activated zinc gallate (ZGOC) semiconductors and the hydroxyl radical (·OH)-rich EDTA-Fe2+-H2O2 system, we achived rational manipulation of ·OH-triggered time-dependent near-infrared (NIR) CL induction. To extract high-information-density outputs from the CL response, ZGOC nanocrystals associated with different Cr3+-related trap states were precisely identified by a distinct CL “fingerprint” pattern and robust statistical analysis. Remarkably, the generalizability of this method was validated using mixed models containing two typical samples and other adjustable ZGOC systems. The developed CL probe for Cr3+-related trap state evaluation provides advantages such as cost-effectiveness, operational simplicity, and rapid response, offering a promising and innovative alternative to conventional trap state assessment methods.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Asad Sharif,Hammad Saulat,Peng Wan,Jianhua Yang,Lu Jinming
M-gallate (M = Ni, Co) coated stainless steel meshes (SSMs) were fabricated through a cost-effective and environmentally friendly synthesis approach of electrodeposition for a sustainable solution of oil/water separation. The M-gallate/500-mesh, synthesized in just 120 s, exhibit super hydrophilic properties owing to the rich hydroxyl groups (–OH) inherent in their metal–organic framework (MOF) structure which significantly enhance their performance in oil/water separation. The nano-sized randomly oriented crystals growth of Co-gallate/500-mesh showed the excellent separation performance with a water flux of 93.3 ± 5.2 × 10 3 Lm −2 h −1 and separation efficiency of 99.8 ± 0.1 % while Ni-gallate/500-mesh exhibit a water flux of 71.5 ± 5.9 × 10 3 Lm −2 h −1 and separation efficiency of 99.6 ± 0.2 % for the separation of light oil toluene/water mixture. To assess practical applicability, the M-gallate/500-mesh were tested for seawater/oil mixtures. Notably, the separation efficiency remained above 99 % for both Ni-gallate/500-mesh and Co-gallate/500-mesh while the seawater flux slightly increased for Ni-gallate/500-mesh. Moreover, M-gallate/500-mesh demonstrated good separation performance and chemical stability under alkaline conditions coupled with rapid and facile synthesis, indicating their potential for practical oil/water separation.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Zhi-Han Zuo,Ying-Ying Peng,Junhao Li,Xiaojun Wang,Zhao-Qing Liu,Yibo Chen
Color-tunable persistent luminescent materials that respond to external physical stimuli are fascinating but rarely reported, especially the dynamic ones. In this work, a dynamically color-tunable persistent luminescence by varying the ambient temperature is revealed in an all-inorganic singly-phase Cr 3+ , Mn 2+ co-doped zinc gallate spinel phosphor. The persistent luminescence shows dramatic color variation from green (∼503 nm) to deep red (∼709 nm) in 350 ∼ 650 K. The application potential of this phosphor for advanced anti-counterfeiting is verified by fabricating several multi-level anti-counterfeiting models, which work under both fluorescence and afterglow modes. Further, by detailed optical investigations and theoretical calculations, two factors are demonstrated to endow the persistent luminescence of the co-doped phosphor with temperature-dependent afterglow colors: the dual-traps electronic structure of the host and the different photoluminescence thermal quenching properties of the Cr 3+ /Mn 2+ emitters. This work reports the dynamic color-tunable persistent luminescence under different temperatures in Cr 3+ , Mn 2+ co-doped zinc gallate and provides a new perspective for the design of thermal-responsive dynamic optical materials for the application of advanced anti-counterfeiting.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Qian Wang,Changchao Zhou,Li Shen,Eryue Song,Yu Yang,Haiqian Lian,Rujing Hou,Yichang Pan
The pervaporation (PV) technology is attractive for azeotrope component separation of the MeOH/MTBE mixture due to the reduced energy and cost relative to the traditional ternary distillation process. However, the membrane separation performance is largely affected by its microstructure including pore size and shape as well as its surface properties such as hydrophilicity. Herein, we report a Co-gallate MOF membrane that features preferential adsorption and diffusion of methanol (MeOH) relative to the methyl tert -butyl ether (MTBE) molecules during the PV separation process. The high-quality Co-gallate MOF membrane has been prepared by introducing a regulator of KOH. The MeOH flux of the Co-gallate MOF membrane was 0.565 kg m −2 h −1 and the separation factor was up to 721 at 15 wt% MeOH/MTBE feed composition. It is worth noting that the separation performance exceeds most of the reported membrane materials for MeOH/MTBE separation in the PV process. Furthermore, the separation performance of the Co-gallate MOF membrane for MeOH/MTBE mixtures remained almost unchanged over 70 h, indicating the reliable long-term stability of the membrane. Thus, the Co-gallate MOF membrane demonstrated a potential practical application for MeOH/MTBE separation.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2022
·
IF 3.656
Lei Huai,Lu-Nan Zhang,Bei-Bei Zhang,Guangan Jia,Wen-Dong Yao,Wenlong Liu,Ru-Ling Tang
Inorganic oxide crystalline materials have been attractive owing to unusual structural and physical properties including superconductivity , nonlinear optics, photocatalytic degradation, molecular sieve and solar cells. Herein, a new molecule-inclusion strontium gallate , Sr 6 (Ga 12 O 24 )·Bi 2 O 3 , has been obtained by solid-state method. The compound crystallizes in the centrosymmetric space group R 3 ¯ (no. 148), and exhibits a three-dimensional network structure composed by corner-sharing connected GaO 4 tetrahedra and edge-sharing connected SrO 9 polyhedra with Bi atoms located in hexagonal tunnels. Spectral analysis shows that the compound exhibits strong Raman peak. Synthesis, crystal structure, versatile characterizations as well as theory calculations of Sr 6 (Ga 12 O 24 )·Bi 2 O 3 are presented in this work.
研究领域:
无机化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yuzhu Yang,Peng Zhang,Wanying Xie,Zenggang Lin,Xuan Miao,Sixia Li,Haining Wang,Weisheng Liu
The general stimulus-responsive color modulation method requires both strict control of microstructures and continuous adjustment of specific stimuli conditions to externally manipulate emission color for scientific research and applications. Herein, by hierarchically utilizing the energy transfer processes from traps to luminescent centers, a possible mechanism for the dynamic multicolor evolution in a single material is proposed. This mechanism explains the fundamental principle of the dynamic photochromic behavior and afterglow color variation. A series of Sr 3 Ga 4 O 9 :Ln 3+ (SGO, Ln = Dy, Tb, Pr, Sm) phosphors with dynamic photoluminescence (PL) and afterglow color that change over time under a fixed stimulus were developed using the mechanism as a basis for experimental design. The PL dynamically transformed from orange, green or red to blue under 254 nm irradiation in seconds and reversed from blue to orange, green or red after the excitation source was removed. Finally, based on distinctive luminescence properties, their potential application in optical encryption and optical anticounterfeiting was also methodically investigated.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2025
·
IF 5.1
Qingqing Xie,Ailijiang Tuerdi,Xiangkai Qiao,Yalin Zheng,Aikelaimu Aihemaiti,Peng Yan,Abdukader Abdukayum
Near-infrared persistent luminescent nanoparticles (PLNPs) are widely used for deep tissue penetration in bio-imaging. Ga2O3:Cr3+, a promising phosphor material, has been extensively studied for its suitable band gap and tunable emission wavelength. Although a redshift in the fluorescence wavelength has been achieved, the persistent luminescence properties of Ga2O3:Cr3+ following this redshift have not been extensively explored. Herein, we have prepared Ga1.99−xInxO3:0.01Cr3+ (x = 0–1.99)(GIO) PLNPs utilizing a hydrothermal method followed by calcination. Replacing gallium with indium in the crystal structure of Ga2O3:Cr3+ redshifts the emission wavelength to 830 nm and induces persistent luminescence, which is attributed to lattice distortion caused by the substitution of gallium with indium, which modifies the crystal field around the Cr3+ ions. The as-prepared GIO nanoparticles show potential for future low-cost, deep-tissue bioimaging applications.
研究领域:
材料科学
·
生物医学工程
·
光学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2016
·
IF 4.758
Hui Chen,Guo-Dong Li,Meihong Fan,Qian Gao,Jiabo Hu,Saren Ao,Cundi Wei,Xiaoxin Zou
Transition metal spinel semiconductors, with a general formula of AB 2 O 4 , have been shown as a promising group for gas sensor applications. This paper reports a simple and effective electrospinning method to systematically prepare mesoporous MGa 2 O 4 (M Ni, Cu, Co) nanofibers. It is found that gas sensing reaction process of the materials is decisively influenced by transition metal M(II)-ions. The gas response tends to decrease in the order of NiGa 2 O 4 > CuGa 2 O 4 > CoGa 2 O 4 . In addition, NiGa 2 O 4 and CoGa 2 O 4 show p-type behaviors, and CuGa 2 O 4 shows an n-type behavior. Further analysis reveals that charge carrier hopping (e − hopping or h + hopping) processes between different valent metal cations, which is mainly dominated by octahedral sites of spinel, are responsible for the conductivity type, the surface redox reaction and thereby the gas sensing properties.
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Dong-Mei Zhou,Li-Jian Chen,Xu Zhao,Li-Xia Yan,Xiu-Ping Yan
Photocatalysis is considered as an environmentally friendly and sustainable method as it can produce active species to degrade pollutants. However, its applications are hindered by the turbidity of pollutants and the requirements for continuous or repeated in situ irradiation. To avoid the need for continuous in situ irradiation in the photocatalytic process, herein we report the doping of Cu(II) ions into zinc gallate (ZnGa 2 O 4 ) as traps to capture photo-generated electrons. In this way, long lifetime charge release and separation were effectively achieved for the persistent degradation of organic dyes in wastewater. The Cu(II) doped ZnGa 2 O 4 (ZGC) nanoparticles with a small size about 7.7 nm synthesized via a hydrothermal method exhibited a persistent photocatalytic activity with continuous production of reactive oxygen species for at least 96 h without in situ irradiation due to its unique electronic structure and carrier transport path, and enabled to degrade 82.2 % of rhodamine B in 1 h. Further investigation revealed that the doped Cu(II) ions occupied the octahedral sites of ZGC and highly increased the persistent production and availability of active species for the persistent degradation of organic dyes under pre-illuminated conditions.
研究领域:
环境科学
·
材料科学
·
化学
✓ 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）