JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2025
·Vol. 36
·期 24
·1-20
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IF 2.8
Li Yuzhen,Li Shuo,Xia Yunsheng,Sun Zhaoxin,Lan Borong
Photocatalytic technology had attracted attention for the abatement of organic contaminants in wastewater with solar energy. In this study, a binary supported heterojunction photocatalyst (AgIn(MoO 4 ) 2 /g-C 3 N 4 ) was constructed by a facile impregnation method, and the catalyst was utilized for the efficient degradation of tetracycline (TC) under visible light. The structure, micro-morphology and optical properties of the photocatalyst were also characterized and analyzed. Compared with g-C 3 N 4 and AgIn(MoO 4 ) 2 , the composites exhibited excellent photocatalytic performance. Among them, superoxide radicals, hydroxyl radicals and holes were participated in the degradation reaction. In addition, the composites had good cyclic stability and a broad pH usage range. The enhanced photocatalytic degradation performance could be attributed to the Z-scheme electron transfer mechanism, which both promoted the separation of photogenerated carriers and utilized the strongest redox capacity in the monomer. Overall, this work provided a feasible strategy for constructing g-C 3 N 4 -based heterojunction catalysts for efficient removal of TC from polluted water.
研究领域:
环境科学
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材料科学
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化学工程
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Qing-rui Zeng,Zi-ang Jia,Xu Liu,Bo-wen Xiu,Jin-ping Cheng
The rational application of piezoelectric polarization properties in non-centrosymmetric heterojunctions to improve charge separation efficiency is a novel approach for enhancing their photoelectrocatalytic capabilities for environmental purification. Herein, a noval 1T-2H MoS 2 QDs/Y-NaBi(MoO 4 ) 2 multiple heterostructures with two types S-scheme heterojunctions was formed by multi-functional materials NaBi(MoO 4 ) 2 with Y 3+ ion-doping and multi-phase state (1T, 2H and 1T-2H) MoS 2 quantum dots multi-interface polarization engineering. Material characterization and DFT calculations revealed that 1T-2H MoS 2 QDs/Y-NaBi(MoO 4 ) 2 multiple heterostructures produce highly-efficient Bi-S-Mo(IV) and Mo(IV)-S-Mo(VI) charge-transfer channels induced by multi-interface polarization engineering. 1T-2H MoS 2 QDs/Y-NaBi(MoO 4 ) 2 heterostructures were developed as photoanodes using the pressed tablet stainless-steel mesh (PT-SSM) method, and demonstrated conspicuous piezoelectric-photoelectrocatalytic (PZ-PEC) efficiency (99.88% removal within 40 min) for the degradation of organic pollutant phosphodiesterase-5 inhibitor (PDE-5i) under visible light illumination, direct-current external bias and mechanical force. This work provides new insight for synergy and mechanism between piezoelectric effect and photoelectrocatalysis for environmental clean-up.
研究领域:
材料科学
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环境科学
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电化学
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纳米技术
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催化
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2025
·
IF 14.9
Beirong Ye,Hongxian Liu,Chen Li,Tengfei Zhang,Yongqi Li,Xinqi Liang,Renhong Chen,Tao Tang,Fengyu Huang,Sipu Li,Lingjie Zhang,Abolhassan Noori,Mir F. Mousavi,Xinhui Xia,Yongqi Zhang
Component leaching plays a pivotal role in enhancing the activity and stability of high-entropy-based catalysts by triggering structural reconstruction during the oxygen evolution reaction (OER). In this study, we employed soluble V and Mo as sacrificial components alongside a Co stabilizer to synthesize NiFeCoVMo high-entropy catalysts, aiming to simultaneously modulate the reconstruction behavior and optimize catalytic performance. The synergistic interplay between dual-component dissolution and in situ deposition/adsorption mechanisms accelerates structural evolution, ultimately yielding MoO 4 2− -modified NiFeCo oxyhydroxide (NiFeCoOOH-MoO 4 2− ). Mechanistic studies reveal that the NiFeCo-based system is particularly conducive to the reconstruction process, while adsorbed MoO 4 2− function as electronic modulators that redistribute charge densities within the reconstructed layers and reduce surface energy. As a result, this reconstructed catalyst demonstrates exceptional OER activity, achieving an overpotential of 172 mV at 10 mA cm −2 , along with remarkable long-term durability (up to 500 h at 50 mA cm −2 ). This study provides fundamental insights into the origins of the superior electrocatalytic performance of high-entropy materials, paving the way for further exploration and optimization of these advanced catalysts.
研究领域:
材料科学
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电化学
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催化科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
·
IF 9.965
Yonghao Gan,Ying Ye,Xiaoping Dai,Xueli Yin,Yihua Cao,Run Cai,Xin Zhang
Exploring high-efficiency electrocatalysts for oxygen evolution reaction (OER) is one of the most important concerns to produce hydrogen in water electrolysis. Herein, the FNM/Co 2 P-0.4 heterostructure was designed as an electrocatalyst for the OER process by the combination of MoO 4 2− intercalating NiFe LDH and Co 2 P on nickel foam (NF). The surface reconstruction and MoO 4 2− leaching can induce the conversion of Co 2 P and NiFe LDH on FNM/Co 2 P-0.4 to generate Co/NiOOH with more oxygen vacancies. Beyond, CoOOH and NiOOH can also synergize to reduce the energy barrier of OER, optimize conductivity, and improve stability. The surface reconstruction and the formation of OOH ⁎ were further unveiled by in-situ UV–vis absorption spectra and Fourier-transformed alternative current voltammetry ( FTACV). The integration of interfacial synergies and oxygen vacancies can facilitate the adsorption/desorption of intermediates, regulate the d-band center, and expose more active sites. And as a result, FNM/Co 2 P-0.4 shows a significant low overpotential (240 mV) at 50 mA cm −2 , a small Tafel (74 mV dec −1 ), low activation energy ( E a ) and remarkable durability. This work provides a new pathway to improve the OER performance by using interfacial synergies and rich oxygen vacancies derived from the self-sacrificial reconstruction of heterostructured electrocatalysts.
研究领域:
材料科学
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电催化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Shuyu Xie,Jihui Wang,Wenbin Hu
ZnAl-MoO 4 -LDHs film was fabricated in situ on the Q235 steel substrate by aluminizing process, coprecipitation method and ion-exchange method. The morphology, composition and structure of the LDHs film were analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy. The anticorrosion capability of the Q235 steel with LDHs film was observed by electrochemical impedance spectroscopy (EIS) and polarization curve. The LDHs film had a plate-like morphology which is the typical grain morphology of LDHs, and a particle size ranging from 2 pm to 4 pm and a particle thickness ranging from 0.05 pm to 0.2 pm. The increase of the layer spacing of LDHs film and the absorption peak of MoO 4 2- in FT-IR spectra can prove the intercalation of MoO 4 2- . Compared with bare Q235 steel, the corrosion current density of the Q235 steel with LDHs film decreased and the polarization resistance increased. The improvement of corrosion resistance is owed to the LDHs film which plays as a barrier between the substrate and the corrosive medium. The exchangeability of the interlayered anions of LDHs can catch the corrosive chloride ion in the medium and the MoO 4 2- released from the LDHs layer can play as corrosion inhibitor.
研究领域:
材料科学
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腐蚀与防护
✓ 已验证
DOI
高影响因子
JOURNAL OF LUMINESCENCE
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2022
·
IF 4.171
Xueai Yin,Shuchen Lü
In this study, Sr 0.3 Ca 0.7 (MoO 4 ) 2 :xDy 3+ , yEu 3+ phosphors with and without charge compensation were produced using the coprecipitation method. Their crystal structure, luminescence performances, charge compensation, fluorescence lifetime , thermal extinguishing behavior as well as energy transfer mechanism were explored in detail. The X-ray diffraction patterns show that the appropriate amount of Dy 3+ /Eu 3+ single and co-doped in the lattice has no obvious influence on the crystal structure. The luminescence results showed that Sr 0.3 Ca 0.55 (MoO 4 ) 2 : 0.1Eu 3+ with charge compensation exhibited luminescence intensity 4.98 times higher than that of Sr 0.3 Ca 0.6 (MoO 4 ) 2 : 0.1Eu 3+ non-charge compensation. The luminescence intensity of Dy 3+ /Eu 3+ co-doped Sr 0.3 Ca 0.7 (MoO 4 ) 2 phosphors was significantly improved by charge compensation. Furthermore, efficient energy transfer from Dy 3+ → Eu 3+ was confirmed by emission spectra , excitation spectra, attenuation curves, and thermal quenching curves. This suggests that the charge compensation could significantly improve the Eu 3+ red emission. Therefore, the investigated SrCa(MoO 4 ) 2 : Eu 3+ , Dy 3+ phosphors may be a favorable candidate for promising applications in lighting.
研究领域:
材料科学
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光学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Zhenjun Qing,Yuexi Zheng,Haiyan Li
A series of Y 3+ -substituted NaSm 1-x Y x (MoO 4 ) 2 (x = 0.05–0.20) ceramics were synthesized via a conventional solid-state method. Y 3+ substitution significantly enhanced the microwave dielectric properties by modulating the crystal structure, microstructure, and chemical bond characteristics. Rietveld refinement confirmed that all samples adopted a single-phase tetragonal scheelite structure (space group I 4 1 /a). Lattice parameters decreased monotonically with increasing x, while the packing fraction increased from 60.80% to 61.00%, indicating lattice densification. All samples achieved relative densities exceeding 95.9%. Notably, Y 3+ doping simultaneously improved the quality factor and temperature stability: Q × f increased from 39,500 GHz to 52,400 GHz, while | τ f | decreased from 38.7 ppm/°C to 22.3 ppm/°C. The optimal properties were obtained at x = 0.20, with ε r = 12.4, Q × f = 52,400 GHz, and τ f = −22.3 ppm/°C. Raman analysis revealed a negative correlation between the FWHM of the ∼886 cm −1 mode and Q × f , confirming reduced lattice anharmonicity. P–V–L bond theory demonstrated that the enhanced ionicity, lattice energy, and bond energy of the Na/Sm/Y–O bonds contributed to the improved ε r , Q × f and | τ f |, respectively. The low sintering temperature of 900 °C makes this composition highly promising for LTCC substrate applications.
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2018
·Vol. 11
·期 2
·297
·
IF 2.467
Jiaxi Wang,Li Luo,Baoyu Huang,Jingqi He,Wei Zhang,Weiren Zhao,Jianqing Wang
Novel LiLa1−x−y(MoO4)2:xSm3+,yEu3+(in short: LL1−x−yM:xSm3+,yEu3+) double molybdate red phosphors were synthesized by a solid-state reaction at as low temperature as 610 °C. The optimal doping concentration of Sm3+in LiLa1−x(MoO4)2:xSm3+(LL1−xM:xSm3+) phosphor isx =0.05 and higher concentrations lead to emission quenching by the electric dipole—electric dipole mechanism. In the samples co-doped with Eu3+ions, the absorption spectrum in the near ultraviolet and blue regions became broader and stronger than these of the Sm3+single-doped samples. The efficient energy transfer from Sm3+to Eu3+was found and the energy transfer efficiency was calculated. Under the excitation at 403 nm, the chromaticity coordinates of LL0.95−yM:0.05Sm3+,yEu3+approach to the NTSC standard values (0.670, 0.330) continuously with increasing Eu3+doping concentration. The phosphor exhibits high luminous efficiency under near UV or blue light excitation and remarkable thermal stability. At 150 °C, the integrated emission intensity of the Eu3+remained 85% of the initial intensity at room temperature and the activation energy is calculated to be 0.254 eV. The addition of the LL0.83M:0.05Sm3+,0.12Eu3+red phosphors can improve the color purity and reduce the correlated color temperature of WLED lamps. Hence, LL1−x−yM:xSm3+,yEu3+is a promising WLED red phosphor.
✓ 已验证
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2024
·
IF 3.2
Feifei Guo,Wanling Rong,Lijuan Chen,Fuai Hu,Shanpeng Wang,Xutang Tao,Zeliang Gao
The orthogonal polarized dual-wavelength laser has attracted increasing attention due to its unique applications in spectral analysis, differential radar, terahertz, etc. In this paper, the Nd-doped LiY(MoO4)2 (LYMO) crystal with a disordered structure is selected as a laser gain medium to obtain the dual-wavelength laser. The fluorescence spectra of the Nd:LYMO crystal show obvious polarization anisotropy, which is caused by the anisotropic lattice field. The π- and σ-polarized stimulated emission cross-sections at 1061 and 1068 nm are calculated to be 17.5 × 10–20, 8.7 × 10–20, 9.1 × 10–20, and 20.6 × 10–20 cm2, respectively. The lasers operating at 1061 and 1068 nm are obtained using c- and a-cut Nd:LYMO crystals, respectively. More importantly, a 1061 and 1068 nm orthogonally polarized dual-wavelength laser is also successfully designed and achieved using a 45°-cut Nd:LYMO crystal; the corresponding optical-to-optical conversion efficiency and slope efficiency are 27.9 and 31.7%, respectively. Our research confirms that the Nd:LYMO crystal can achieve efficient orthogonally polarized dual-wavelength laser output, which would have potential applications in differential frequency and terahertz fields.
研究领域:
激光物理
·
光学材料
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光子学
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固体激光器
·
晶体学
✓ 已验证
DOI
高影响因子
NANO
·
2018
·
IF 1.1
Xu Yan,Ziyang Wu,Yong Zhao,Biao Liu,Yubin Tang
Silver nanoparticles (NPs) and related semiconductors are a family of very important and widely applied photocatalysts. However, the preparation of high stability and activity of this photocatalyst is still a challenge. In this work, we report a stable Ag/AgCl/AgBi(MoO 4 ) 2 heterojunction photocatalyst fabricated via a simple in situ anion-exchange reaction followed by the photoreduction treatment. In the treatment of tetracycline (TC) wastewater under visible light, the AC-0.4 sample (prepared with 0.4 mmol KCl) exhibits the significantly improved activity (degradation ratio, DR of 71.3%) compared with the pristine AgBi(MoO 4 ) 2 (30% DR) and Ag/AgCl sample (synthesized by the photoreduction of AgCl) (37% DR) under identical experimental conditions. This activity promotion is from the fast interfacial electron transfer between the heterojunction phases of AgCl/AgBi(MoO 4 ) 2 and the SPR effect of Ag NPs. After five successive recycles, the AC-0.4 sample still maintains good stability and activity for TC degradation, which shows a great potential to be used in practical application. Through the ESR and controlled scavenged experiments, we found the • OH and • O 2 − are the major reactive intermediate species in the TC photodegradation reaction. Our work provides a new insight into the synthesis of stable and high efficient Ag-based heterojunction photocatalysts for the application of wastewater treatment.
研究领域:
材料科学
·
环境科学
·
光催化技术
✓ 已验证
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2016
·
IF 2.435
Liangjun Zhou,Wenxi Wang,Sicen Yu,Bo Nan,Yinggang Zhu,Yang Shi,Haohong Shi,Xingzhong Zhao,Zhouguang Lu
Single-phase and Dy 3+ /Eu 3+ co-doped novel phosphor LiY(MoO 4 ) 2−x (WO 4 ) x :Dy 3+ ,Eu 3+ , emitting white luminescence under near ultraviolet (NUV) light, was prepared through sol-gel method. The preparation and characterization of this phosphor were systematically studied by X-ray diffraction and spectrofluorophotometric measurements. The molar ratio of metal ions and citric acid (R m/c ) and calcination temperature greatly influenced the phase purity of sample, revealing that the pure phase could be obtained by using R m/c = 1:2.5 and calcination temperature = 800 °C. Under NUV excitation, the as-prepared phosphor exhibited the emissions of 485, 572 and 612 nm, which intensities could be affected by the pH and the concentrations of molybdenum and tungsten ions. By doping appropriate concentrations of Dy 3+ and Eu 3+ , white light emitting phosphor LiY(MoO 4 ) 1.2 (WO 4 ) 0.8 :6%Dy 3+ ,7%Eu 3+ with good responsiveness to NUV light was obtained. The Commission Internationale de L’Eclairage chromaticity coordinates were calculated to be (x = 0.334, y = 0.322), close to the D 65 illuminant (x = 0.313, y = 0.329), indicating the potential application for NUV WLEDs.
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 MOLECULAR STRUCTURE
·
2025
·
IF 4.7
Wenzhi Su,Mengyu Zhang,Chuancheng Zhang,Yong Zou,Wenpeng Liu,Shoujun Ding
Upconversion (UC) fluorescence intensity ratio (FIR) technology has emerged as a promising approach for optical thermometry due to its ability to provide non-contact, high-precision temperature measurements. Unlike conventional UC phosphor-based systems, single-crystal UC materials offer enhanced responsiveness and sensitivity for thermal detection, thanks to their structural stability and superior thermal conductivity. In this study, we successfully synthesized an Yb 3+ , Ho 3 ⁺:NaBi(MoO 4 ) 2 (NBM) single crystal with exceptional optical quality using the Czochralski (Cz) growth technique. Comprehensive structural characterization was carried out using X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, and scanning electron microscopy (SEM). The results confirmed that Yb 3+ , Ho 3+ :NBM crystallizes in a tetragonal structure with the space group I4 1 /a. The emission of different visible light colors under various excitation wavelengths was found to be due to the multiphonon relaxation process. Systematic analysis of power-dependent up-conversion emission spectra conclusively showed that the green and red up-conversion emissions arise from two-photon excitation processes. Moreover, temperature-dependent spectral evolution in the range of 300–500 K was quantitatively analyzed, allowing the calculation of both absolute sensitivity ( S ₐ) and relative sensitivity ( S ᵣ) parameters to evaluate the material's optical thermometric performance. These findings highlight the promising potential of Yb 3+ , Ho 3+ :NBM single crystal for developing high-performance optical thermometry devices.
研究领域:
材料科学
·
光学
✓ 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）