ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Shiwen Wang,Chuanzhen Ma,Junwei Ding,Kang Zhao,Heng Wang,Hewei Luo,Shide Wu,Shaoming Fang
VO 2 (B) has attracted tremendous attention as a cathode for aqueous zinc-ion batteries (AZIBs), but its low intrinsic electronic conductivity and uncontrolled vanadium dissolution hinder further practical applications. Herein, Zn 0.03 VO 2 , with guest zinc ions preinserted into the tunnel sites, is demonstrated to enhance the conductivity and cyclability of VO 2 (B). The tailored structure, featuring a modulated electronic configuration, offers enlarged ion diffusion tunnels, improved electronic conductivity, and enhanced electrochemical activity, thereby facilitating the reversible de-intercalation of Zn 2+ /H + ions, as confirmed by both experimental results and theoretical calculations. Notably, vanadium dissolution is significantly suppressed due to the chemical pre-insertion of guest zinc, which weakens the interaction between Zn 2+ and host lattice, as well as the homologous ion effect. As a result, Zn 0.03 VO 2 cathode delivers a high capacity of 358 mAh g −1 , particularly at low current density of 0.1 A g −1 , with 85% capacity retention after 300 cycles, excellent rate capability of 175 mAh g −1 at 5 A g −1 , and long cycling stability over 2000 cycles at 20 A g −1 . Moreover, a pseudocapacitive-dominated Zn 2+ /H + co-insertion mechanism is conclusively identified through electrochemical and spectroscopic analyses. This work provides valuable insights into ion-preinserted structural modulation of vanadium oxides for the development of high-performance AZIBs.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
功能材料
·
电池技术
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产品关联
DOI
高影响因子
NANO
·
2017
·
IF 1.025
Yichang Yu,Zhangjun Hu,Chengjun Li,Shoushuang Huang,Zhiwen Chen,Hongwen Gao
Zn 2 + -doped CTAB@BiOCl inorganic–organic composites were prepared by a co-precipitation method with different aging periods. The results show that the aging period has great influence on the structure, morphology and surface area of Zn 2 + -doped CTAB@BiOCl. The as-synthesized samples tend to form lamellar stacking structure with the increase of the aging time. In addition, the surface area and pore size distribution of samples decrease with the aging period from 0 h to 48 h and then increase from 48 h to 96 h. Besides, the content of CTAB in these composites increases along with the aging period from 0 h to 3 h and then decreases from 3 h to 96 h. Their photocatalytic performances were evaluated by the degradation of Reactive Red 3 (X3B) under UV light irradiation. It is found that the photocatalytic performance of composites increases with the prolonging of the aging time, and 100 mg/L of X3B solution can be almost completely degraded within 16 min by S 9 6 . Moreover, the possible formation mechanism has been proposed and discussed in detail. The work can provide a new sight for broadening the application of co-precipitation in the preparation of nanomaterials and for in-situ one-step synthesis of inorganic–organic composites.
研究领域:
材料科学
·
光催化
·
纳米材料
·
环境化学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 5.6
Dongxu Wang,Miao Pan,Wen-Jie Chen,Zhibin Cheng,Xiaoyang Pan
Novel CaCu 3- x Zn x Ti 3.95 Zr 0.05 O 12 (CCZTZO, x = 0.025 - 0.1) ceramics were synthesized via a sol-gel route to optimize the intrinsic dielectric limitations of CaCu 3 Ti 4 O 12 (CCTO). Systematic investigation of Zn 2+ and Zr 4+ co-doping effects and annealing temperature variations (900 - 1050 °C) on microstructure and dielectric characteristics revealed: XRD analysis confirmed phase-pure CCZTZO crystallization with complete elimination of secondary phases after organic binder removal via re-sintering at 1000 °C. SEM and XPS characterizations validated successful dopant incorporation, demonstrating a monotonic reduction in grain size with increasing Zn 2+ content. Impedance spectroscopy revealed enhanced electrical resistance and substantially reduced dielectric loss tangent (tanδ) while maintaining high dielectric constants (ε′). Optimal performance was achieved in CaCu 2.9 Zn 0.1 Ti 3.95 Zr 0.05 O 12 (CCZTZO-4), exhibiting an low tanδ of 0.002 with high ε′ ≈ 1.27 × 10 3 . Furthermore, excellent frequency stability was observed across 10 2 Hz - 10 5 Hz, with ε′ maintained at ∼10 3 and tanδ consistently between 0.002 - 0.054. Temperature-dependent measurements revealed outstanding thermal stability with a relative permittivity coefficient Δε′/ε′ 25°C ≤ ±10 % over − 60 °C to 120 °C. Analysis of electrical modulus and impedance spectra indicated modified activation energies for both bulk and grain boundary responses, demonstrating that Zn 2+ and Zr 4+ co-doping effectively enhances the interfacial polarization mechanism in CCTO-based ceramics.
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DOI
高影响因子
Materials
·
2026
·Vol. 19
·期 17
·3650
·
IF 3.7
Huidong Tang,Pengcheng Jiang,Xinyi Wen,Yulu He,Simeng Wu,Xin Xiong,Yanqiao Xu,Zhi Wu,Qing Hu
Hybrid manganese bromides have emerged as promising lead-free narrow-band green emitters for wide-gamut displays, but their practical application is still limited by insufficient operational stability. Herein, Zn2+substitution is employed to enhance the stability of tetraethylammonium manganese bromide (TEA2MnBr4) microcrystals (MCs) synthesized via an ultrafast self-assembly method. With increasing Zn2+contents, the photoluminescence intensity of TEA2Mn1−xZnxBr4MCs gradually decreases, while thex= 0.10 MCs still exhibit efficient narrow-band green emission at 518 nm and a high photoluminescence efficiency of about 85% under blue excitation. More importantly, Zn2+incorporation substantially enhances the storage and thermal stability, as well as operational stability of the corresponding green LED devices (retaining above 99% of initial luminous efficacy after 160 h continuous operation at 20 mA). Finally, a white LED fabricated using thex= 0.10 MCs achieves a high luminous efficiency of about 136 lm/W and covers about 112% of the National Television System Committee 1931 color gamut. These results demonstrate that Zn2+substitution is an effective strategy for stabilizing hybrid manganese bromide emitters and highlight their potential for lead-free wide-gamut display applications.
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产品关联
DOI
PubMed
高影响因子
RARE METALS
·
2020
·Vol. 40
·期 8
·2049-2058
·
IF 2.161
Fu Rong,Hu Yan-Yan,Qiao Hui-Na,Yang Chun-Lin,Yin Hao,Ou Mei-Gui
Gd 2 O 3 :Tb 3+ nanocrystal co-doped with Zn 2+ and Li + was prepared by the combination of polyol and solid-phase methods. The synthesized nanoparticles were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), photoluminescence (PL) spectra and magnetic resonance imaging (MRI). The results revealed that both Gd 2 O 3 :Tb 3+ /Zn 2+ and Gd 2 O 3 :Tb 3+ /Li + had cubic unit structures with a spherical shape, and the fluorescence intensity of the nanoparticles reached a maximum at a doping concentration of 0.050 mmol% for Zn 2+ and 2 mol% for Li + , respectively. In addition, the T 1 / T 2 (longitudinal/transverse relaxation time)-weighted MRI signals got enhanced due to the increased longitudinal relaxivity ( r 1 ) and transverse relaxivity ( r 2 ) after the doping by metal ions. Therefore, the materials reported here can be used for fluorescence and MR bimodal imaging, as tracers and for fluorescence detections. Graphic abstract
研究领域:
材料科学
·
纳米医学
·
生物影像学
·
分子探针
·
生物材料
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2020
·Vol. 138
·期 3
·49916
·
IF 2.52
Xueyu Wang,Yong Qi,Shufen Zhang,Wenbin Niu,Wei Ma,Suli Wu,Bingtao Tang
Mechanical nondiscoloring and antistretching photonic crystal (PC) films, especially those with stable structure colors during deformation, have great potential applications in wearable display devices, decoration, and packaging. Here, PC films with antistretching and invariant structural colors during deformation were prepared, by combining Zn 2+ coordinated elastic material and hydroxypropyl methylcellulose (HPMC) with polystyrene@silica (PS@SiO 2 ) colloidal crystals. The PC films release energy by forming local fractures at a microscopic level during the straining process but the lattice spacing and effective refractive index of the local array do not change. According to the Bragg law, the structure color remains unchanged. The introduction of HPMC gave the PC films excellent tensile properties, and the maximum tensile strength reached 10 MPa. And after 100 times of stretching, bending and compression cycles, the structural color remained unchanged.
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DOI
高影响因子
IONICS
·
2021
·Vol. 27
·期 10
·4429-4437
·
IF 2.817
Wang Jing,Liu Xue-An,Zhang Dashui,Tong Zhangfa,Ji Hongbing,Qu Hui-Ying
The popularity of intelligent electronic products demands suitable smart electrodes with high specific capacitance, superior durability, and intrinsic safety. Herein, a bifunctional titanium dioxide (TiO 2 ) electrode with electrochromic energy storage in the Zn-ion aqueous electrolyte was demonstrated. The color of the electrode can be changed according to its charging state by Zn 2+ intercalation/de-intercalation, to realize the noticeable judgment and prediction of the energy contained. Direct growth of TiO 2 by the hydrothermal method effectively increases the bonding force between the active TiO 2 material and the substrate. Electrochemical results show that the TiO 2 electrode has high specific capacitance of 139.8 mF·cm −2 at 1.5 mA·cm −2 , and retains 93% of the initial areal specific capacitance after 100 CV cycles. In addition, it exhibits high transmittance contrast of 45% at a wavelength of 980 nm in the near-infrared region, short bleaching time (6.5 s) and coloration time (18.0 s) at an alternating potential between 0 and − 1.1 V. These superior electrochemical and electrochromic performances can be attributed to the fast Zn 2+ diffusion facilitated by the porous structure and short ion diffusion distance of the TiO 2 electrode.
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DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2015
·
IF 2.495
Chao Xu,Yong Chen,Heng-Yi Zhang,Yu Liu
A crown ether-based supramolecular gel with a three-dimensional network structure was successfully constructed via a hierarchical induced assembly strategy and characterized by UV/vis NMR, viscometry and DLS. Therein, the coordination linkage of bis(terpyridyl)dibenzo-24-crown-8 1 with Zn 2+ produces the 1 /Zn 2+ supramolecular polymer as the primary assembly. Then, the anthryl-dibenzylammonium guest 2 was grafted to the 1 /Zn 2+ supramolecular polymer via the non-covalent association of dibenzylammonium moieties on guests with the dibenzo-24-crown-8 rings on supramolecular polymer. Furthermore, the supramolecular polymer with anthryl grafts underwent a photo-induced secondary assembly to produce the supramolecular gel, which could be reversibly disassembled by a thermo-induced dissociation of anthracene dimers. These photo/thermo-induced hierarchical assembly/disassembly behaviors will provide a potential way to construct degradable hierarchical supramolecular assemblies employing environment-friendly external stimuli, such as light and heat, as controlling method.
研究领域:
化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2013
·
IF 1.918
Ruifang Wang,Yali Cao,Dianzeng Jia,Lang Liu,Fang Li
In this paper, zinc(II) bis-(8-hydroxyquinoline) dihydrate (ZnQ 2 ·2H 2 O) and zinc(II) bis-(2-methyl-8-hydroxyquinoline) monohydrate (Zn(MQ) 2 ·H 2 O) were successfully prepared by a room-temperature solid-state chemical reaction using zinc acetate (Zn(CH 3 COO) 2 ·2H 2 O), 8-hydroxyquinoline (HQ) and 2-methyl-8-hydroxyquinoline (2-methyl-8-HQ) as the starting materials. The results of X-ray diffraction (XRD), fourier transform infrared spectroscopy (FTIR) and thermal analysis (TG/DSC) demonstrated that the chemical composition of the products were ZnQ 2 ·2H 2 O and Zn(MQ) 2 ·H 2 O. The scanning electron microscopy (SEM) images and the transmission electron microscopy (TEM) images showed that the products ZnQ 2 ·2H 2 O and Zn(MQ) 2 ·H 2 O had sheet-like morphology with a thickness of about 50 nm. The UV–vis absorption spectra of ZnQ 2 ·2H 2 O and Zn(MQ) 2 ·H 2 O indicated that they existed charge transfer from the metal to the ligand (MLCT bands). The room-temperature photoluminescence (PL) spectra of ZnQ 2 ·2H 2 O revealed that the sample possessed largely blue shift compared with the previous reports. Besides, the two complexes presented a consistent decline situation along with the decline concentration in chloroform solution, which due to solvate effect and structural similarity. The fluorescence quantum yields were measured at 36.58% and 0.07%, and the emission colors were blue-green and light-blue, respectively. The fluorescence quantum yield of ZnQ 2 ·2H 2 O was higher than some reported similar structure. The method was believed to largely facilitate the fabrication and application of organometallic complex nanomaterials.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
AUSTRALIAN JOURNAL OF CHEMISTRY
·
2023
·Vol. 77
·期 1
·NULL
·
IF 1.1
Qinghong Bai,Yangming Jiang,Enming Hu,Libin Lv,Chenghui Wang,Xin Xiao
Terpyridine and its derivatives have good binding affinity for most transition metal ions due to the arrangement of their three pyridine nitrogen atoms. In this work, a new ratiometric fluorescent probe G, which is based on a styrylpyridinium attached to a terpyridine fluorophore, was synthesized and characterized. The fluorescence spectrum of probe G shows a good response to Zn2+ by an intramolecular charge transfer effect. On increasing the concentration of Zn2+, the fluorescence color of probe G changes from blue to yellow. Importantly, probe G has a high selectivity for Zn2+and is not affected by other metal ions, including Cd2+. In addition, the limit of detection (LOD) of probe G for Zn2+ was found to be up to 0.17 µM. The results show that probe G has the ability to selectively recognize Zn2+ in aqueous solution.
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产品关联
DOI
高影响因子
Joule
·
2021
·Vol. 5
·期 11
·2993-3005
·
IF 41.248
Xinliang Li,Xinyao Ma,Yue Hou,Zhenhua Zhang,Yue Lu,Zhaodong Huang,Guojin Liang,Mian Li,Qi Yang,Jiale Ma,Na Li,Binbin Dong,Qing Huang,Furong Chen,Jun Fan,Chunyi Zhi
Although MXene has been widely used in many energy storage systems, the absence of a high intrinsic voltage plateau results in its poor discharging feature. Herein, we report a Nb 2 CTx MXene cathode with an apparent discharge voltage plateau for high-performance aqueous zinc ion batteries. Triggered by a repeated high-voltage scanning up to 2.4 V, the Nb 2 CTx cathode gradually displays a stable Zn 2+ storage dominated by a battery behavior. A high discharge voltage plateau of 1.55 V is presented, which is distinct from all reported MXene electrodes. Consequently, a record-level energy density among all aqueous MXenes electrodes of 146.7 Wh kg −1 with a 63% contribution from the plateau region is obtained, which is 292% that of the capacitive Nb 2 CTx electrode. The developed high-voltage scanning strategy is also effective for Ti 3 C 2 T x MXene to achieve a remarkable voltage plateau.
研究领域:
材料科学
·
储能
·
电化学
·
纳米材料
✓ 已验证
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2018
·
IF 4.61
Lingling Zhang,Zhaoxi Zhang,Xi He,Lei Zheng,Shikun Cheng,Zifu Li
Engineered nanoparticle materials (ENMs) are widely and increasingly produced and employed in many sectors. The use of diverse ENMs potentially leads to the release of multiple ENMs into the environment. These ENMs after discharge will be end in wastewater treatment plant and present in sludge. This work investigated the effect of multi-ENMs systems of ZnO and TiO 2 on sludge anaerobic fermentation and the related toxicity mechanism. Results revealed that the toxicity of ZnO ENMs on anaerobic fermentation was reduced in the presence of TiO 2 ENMs. Investigation on the change of free Zn 2+ and reactive oxygen species ( OH and H 2 O 2 ) suggested that both of free Zn 2+ and ROS contributed to the toxicity mechanism. Zn 2+ decrease was the main reason for the reduced toxicity in multi-ENMs systems. ROS mainly led to the reduction of cell viability in anaerobic fermentation systems. The presence of TiO 2 in the multi-ENMs systems promoted the recovery of enzyme activity, cell viability and bacteria abundance.
研究领域:
环境科学
·
纳米技术
·
废水处理
·
微生物学
✓ 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）