NANO
·
2022
·
IF 1.438
Zhenyang Yao,Yali Yin,Yu Xia,Haitao Chen
All-inorganic halide perovskite (CsPbX 3 ) is a photoelectric material with great potential. However, the Pb element in CsPbX 3 is toxic, which affects the further use of these materials. The toxicity problem can be solved by adding Zn ions into CsPbBr 3 . In this work, Zn-doped cesium lead bromide perovskites (CsPbBr 3 ) nanocrystals (NCs) were synthesized by thermal injection method, and their optical properties were also studied. When Zn was introduced into CsPbBr 3 , its exciton emission summit shifts slightly. By changing the concentration of Zn 2 + , the size and optical properties of Zn:CsPbBr 3 NCs can be controlled. We also study the decay lifetime of its emission peak, and the results showed that Zn:CsPbBr 3 had a longer PL decay lifetime than undoped CsPbBr 3 . This indicated that the incorporation of CsPbBr 3 into Zn 2 + had a good application prospect in the optical field.
研究领域:
材料科学
·
光学
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产品关联
DOI
高影响因子
Journal of the American Chemical Society
·
2022
·
IF 16.383
Qiu Zhang,Yilin Ma,Yong Lu,Youxuan Ni,Liu Lin,Zhenkun Hao,Zhenhua Yan,Qing Zhao,Jun Chen
Rechargeable aqueous Zn metal batteries have become promising candidates for large-scale electrochemical energy storage owing to their high safety and affordable low cost. However, Zn metal anode suffers from dendritic growth and hydrogen evolution reaction (HER), deteriorating the electrochemical performance. Here, we demonstrate that these challenges can be conquered by introducing a halogen ion into the Zn2+ solvation structure. By designing an electrolyte composed of zinc acetate and ammonium halide, the electron-donating anion I– can coordinate with Zn2+ and transform the traditional Zn(H2O)62+ to ZnI(H2O)5+, in which I– could transfer electrons into H2O and thus suppress HER. The dynamic electrostatic shielding layer formed by concomitant NH4+ can restrict the dendritic growth. As a result, the halogenated electrolyte achieves a high initial coulombic efficiency (CE) of 99.3% in the Zn plating/stripping process and remains at an average of ∼99.8% with uniform Zn deposition. Moreover, Zn–I batteries are constructed by using dissociative I– as the cathode and carbon felt–polyaniline as the conductive and adsorptive layer, exhibiting an average CE of 98.6% without capacity decay after 300 cycles. This work provides insights into the halogenated Zn2+ solvation structure and offers a general electrolyte design strategy for achieving a highly reversible Zn metal anode and batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sensors
·
2026
·
IF 10.9
Jun-Jie Qu,Ze-Jie Zhu,Jing-Yan Zhou,Hao-Ran Yuan,Quan Zong,Mei-Mei Zhang,Yue Li,Jia-Ning Yan,Jing-Ji Zhang,Guo-Ying Wei,Jiang-Ying Wang,Fa-He Cao
Dendrite growth and parasitic reactions in aqueous zinc-ion batteries (AZIBs) are intrinsically driven by heterogeneous interfacial Zn2+ distribution, but conventional characterization techniques cannot achieve real-time, micron-scale quantitative tracking of dynamic Zn2+ evolution. Herein, we report a high-performance Zn2+-selective scanning electrochemical microscopy (SECM) probe based on a multiwalled carbon nanotube (MWCNT)-modified all-solid-state ion-selective membrane. The MWCNT-modified interface effectively suppresses the water-layer effect, reducing the fitted interfacial resistance component from 17,442 to 389 Ω. The optimized probe exhibits a wide linear response range of 10-5-1 × 10-1 M (R2 = 0.999, slope = -19.8 mV·dec-1), an ultrafast response time of <10 s, low potential drift (<10 mV/2000 s), excellent anti-interference against common interfering ions (Na+, K+, Mg2+, Al3+), and a long service life of 45 days. Notably, in situ SECM mapping reveals severe Zn2+ concentration fluctuations (0.178-0.303 M) at the Zn anode in blank electrolyte, which are effectively homogenized to a narrow range of 0.235-0.255 M by 0.01 M mesylacetone additive. This work provides a powerful in situ platform for deciphering AZIB interfacial dynamics and guiding advanced electrolyte design.
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DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2025
·
IF 4.6
Yan Li,Ming Shen,Jing Kong
Although the antibacterial properties of ZnO nanoparticles have been widely studied for potential biomedical applications, their relatively mild antibacterial activity still limits the clinical application of ZnO-based antibacterial materials. Here, we reported a new method to improve the antibacterial activity and visible light absorption of ZnO nanoparticles by incorporating allicin on the surface. The synthesis was performed through a simple condensation reflux reaction to obtain the designed series of ZnO/Allicin composites. FT-IR, XRD, and TEM analysis proved the structure and composition of the obtained composites. All composites show visible light absorption in the UV–visible diffuse reflectance spectroscopy analysis. Through antibacterial activity tests, the ZnO/allincin-1 % sample showed significantly enhanced activity (2-fold increase) against Staphylococcus aureus after visible light excitation. Antibacterial mechanistic investigations reveal that the composition of allicin with the ZnO nanoparticles not only improves ROS productive ability but also enhances the release of Zn 2+ . Overall, this study provides a practical, convenient, and economic strategy to refine the visible light absorption and antibacterial activity of ZnO without introducing more toxic metal ions. In the meantime, this new nanomaterial could be a good starting point for initiating clinically applicable ZnO nanocomposites.
研究领域:
材料科学
·
微生物学
·
生物医学工程
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产品关联
DOI
高影响因子
Environmental Sciences Europe
·
2020
·Vol. 32
·期 1
·1-10
·
IF 5.394
Chen Fen,Wu Ligui,Xiao Xiaoyu,Rong Lingling,Li Mi,Zou Xiaoming
Zinc oxide nanoparticle (nZnO) and chemicals with different mode of action (MOA, i.e., narcotic and reactive) were frequently detected in the Yangtze River. Organisms are typically exposed to mixtures of nZnO and other chemicals rather than individual nZnO. Toxicity of nZnO is caused by the dissolution of Zn2+, which has been proved in the field of single toxicity. However, it is still unclear whether the released Zn2+ plays a critical role in the nZnO toxicity of nZnO–chemicals mixtures. In the present study, the binary mixture toxicity of nZnO/Zn2+ and chemicals with different MOA was investigated in acute (15 min) and chronic (12 h) toxicity test upon Vibrio fischeri (V. fischeri). The joint effects of nZnO and tested chemicals were explored. Moreover, two classic models, concentration addition (CA) and independent action (IA) were applied to predict the toxicity of mixtures.The difference of toxicity unit (TU) values between the mixtures of Zn2+–chemicals with those of nZnO–chemicals was not significant (P > 0.05), not only in acute toxicity test but also in chronic toxicity test. The antagonistic or additive effects for nZnO-chemicals can be observed in most mixtures, with the TU values ranging from 0.75 to 1.77 and 0.47 to 2.45 in acute toxicity test and chronic test, respectively. We also observed that the prediction accuracy of CA and IA models was not very well in the mixtures where the difference between the toxicity ratios of the components was small (less than about 10), with the mean absolute percentage error (MAPE) values ranging from 0.14 to 0.67 for CA model and 0.17–0.51 for IA model, respectively.We found that the dissolved Zn2+ mainly accounted for the nZnO toxicity in the mixtures of nZnO–chemicals, and the joint effects of these mixtures were mostly antagonism and additivity. CA and IA models were unsuitable for predicting the mixture toxicity of nZnO–chemicals at their equitoxic ratios.
研究领域:
环境毒理学
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生态学
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2019
·Vol. 43
·期 29
·11517-11523
·
IF 3.069
Jia Wu,Wenbin Niu,Shufen Zhang,Suli Wu,Wei Ma,Bingtao Tang
In this study, a novel flexible and robust dual-network supramolecular elastic film with solvent resistance and brilliant structural colors was prepared by combining a Zn2+-crosslinked supramolecular elastic film with polystyrene@silica (PS@SiO2) colloidal crystals. This structurally colored supramolecular elastic material consisted of a covalent support network formed by three different monomers and a Zn2+-crosslinked polyacrylic acid (PAA) coordination network, which provided high mechanical strength and flexibility. The tensile and compression stress of this structural color reached 3.26 MPa at a strain of 187% and a pressure of 300 N. The reflectance wavelength of the structural color film remained unchanged after loading–unloading cycles and compression cycles. The structural color film could be bent and unfolded without heating or the application of an external stimulus. Moreover, the structural color film exhibited resistance to solvents in saturated organic vapors and remained color invariant.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 48
·22915-22923
·
IF 3.591
Jing Li,Lin-Hui Wu,Shu-Li Yao,Hui Xu,Teng-Fei Zheng,Sui-Jun Liu,Jing-Lin Chen,He-Rui Wen
A novel Zn2+-based metal–organic framework (MOF) with the formula {[Zn(μ2-η1:η1-BBIP)(μ2-η1:η1:η1-OBA)]·3H2O}n, denoted as JXUST-7, has been successfully assembled using semi-rigid N-donor 3,5-bis(benzimidazol-1-yl)pyridine (BBIP) and flexible 4,4′-oxybisbenzoate (H2OBA). The adjacent Zn2+ ions are linked through an OBA2− ligand with a μ2-η1:η1:η1 bridging mode to form an infinite one-dimensional (1D) Zn2+–OBA2− chain. The neighbouring 1D chains are further connected by a BBIP ligand with a μ2-η1:η1 bridging mode to gain a two-dimensional (2D) sheet layer structure. Topological analysis indicates that the whole 2D structure of JXUST-7 could be simplified as a uninodal sql topology with a point symbol of {44·62}. Furthermore, the opposite parallel 2D layers are further packed by a face-to-face π–π interaction to generate a three-dimensional supramolecular structure. Luminescence experiments reveal that JXUST-7 could be considered as a multi-responsive MOF-based fluorescent probe toward Fe3+, Cr2O72− and acetylacetone (acac) via the fluorescence quenching (turn-off) effect. The detection limits for Fe3+, Cr2O72− and acac are 0.14, 1.33 and 6.53 ppm, respectively. The fluorescence quenching mechanism was analyzed in detail by powder X-ray diffraction, fluorescence lifetime measurement, X-ray photoelectron spectra, theoretical calculation and UV-Vis absorption spectra. More importantly, JXUST-7 could be cyclically utilized at least five times for detecting Fe3+, Cr2O72− and acac.
研究领域:
材料科学
·
分析化学
·
环境科学
✓ 已验证
DOI
高影响因子
International Journal of Analytical Chemistry
·
2019
·
IF 1.682
Kai Sun,Qingzhu Liu,Rui Zhu,Qi Liu,Shunyao Li,Youbin Si,Qingguo Huang
Certain nano-scale metal oxides exhibiting the intrinsic enzyme-like reactivity had been used for environment monitoring. Herein, we evaluated the oxidase-mimicking activity of environmentally relevant nano-MnO2 and its sensitivity to the presence of metal ions, and particularly, the use of MnO2 nanozyme to potentially detect Cu2+, Zn2+, Mn2+, and Fe2+ in water. The results indicated the oxidase-like activity of nano-MnO2 at acidic pH-driven oxidation of 2,6-dimethoxyphenol (2,6-DMP) via a single-electron transfer process, leading to the formation of a yellow product. Notably, the presence of Cu2+ and Mn2+ heightened the oxidase-mimicking activity of nano-MnO2 at 25°C and pH 3.8, showing that Cu2+ and Mn2+ could modify the reactive sites of nano-MnO2 surface to ameliorate its catalytic activity, while the activity of MnO2 nanozyme in systems with Zn2+ and Fe2+ was impeded probably because of the strong affinity of Zn2+ and Fe2+ toward nano-MnO2 surface. Based on these effects, we designed a procedure to use MnO2 nanozyme to, respectively, detect Cu2+, Zn2+, Mn2+, and Fe2+ in the real water samples. MnO2 nanozyme-based detecting systems achieved high accuracy (relative errors: 2.2–26.1%) and recovery (93.0–124.0%) for detection of the four metal ions, respectively. Such cost-effective detecting systems may provide a potential application for quantitative determination of metal ions in real water environmental samples.
研究领域:
环境科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2026
·
IF 5.7
Zhifei Zhou,Yuanzheng Yang,Shunxing Liang,Yanxue Wu,Weitong Cai
Zn 2+ modification optimizes CsPbBr 3 crystallization, producing pinhole-free films with enlarged grains. • Optimized films show enhanced light absorption and suppressed non-radiative recombination losses. • 0.5% Zn 2+ -modified devices achieve a champion PCE of 8.54%, a 21% gain over controls. • Unencapsulated devices retain 91.6% of initial PCE after 720 h at 80 °C/80% RH. Although CsPbBr 3 perovskite solar cells (PSCs) exhibit excellent environmental stability, their wide bandgap and high defect density limit further improvement in power conversion efficiency (PCE). This study introduced Zn 2+ modification strategy to optimize the performance of perovskite. Resulting in a denser morphology, increased grain size and improved crystallinity of the CsPbBr 3 film. Such microstructural optimization significantly enhanced light absorption and effectively suppressed non-radiative recombination. Consequently, the 0.5% Zn 2+ -modified device achieved a champion PCE of 8.54%, representing a significant enhancement over the 7.07% efficiency of the unmodified device. Moreover, the unencapsulated device demonstrates excellent stability, retaining over 91.6% of its initial efficiency after 720 h of storage at 80 °C and 80% relative humidity. This work demonstrates that Zn 2+ modification is an effective strategy for optimizing the crystallization of CsPbBr 3 film and improving the efficiency of PSCs, offering a practical route toward low-cost, stable CsPbBr 3 photovoltaic devices.
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产品关联
DOI
高影响因子
Batteries & Supercaps
·
2024
·
IF 5.1
Yan Xu,Zhaohe Guo,Ming Song,Xuena Xu,Hongri Wan,Limei Sun,Dongliang Chao,Wanhai Zhou
Graphical Electrolyte as the indispensable component of batteries has a close relationship with the stability of Zn anode. The solvation design with less solvated water, interface optimization with water-poor and pH-stable interface, and kinetics regulation with fast Zn 2+ transport, uniform Zn 2+ flux, and orientational Zn growth can contribute to the stable Zn anode. Aqueous zinc-ion batteries (ZIBs), lauded for their low cost, eco-friendliness, and high safety, have garnered significant attention. However, their commercial viability is hindered by the challenges of dendrite growth and side reactions during the Zn 2+ reduction reaction process. Electrolyte as the indispensable component of batteries has a close relationship with the issues mentioned above. With the feature of simplicity, effectiveness, and scalability, regulating electrolytes is a particularly promising, feasible, and straightforward approach to stabilizing the Zn anode. The solvation design with less solvated water, interface optimization with water-poor and pH-stable interface, and kinetics regulation with fast Zn 2+ transport, uniform Zn 2+ flux, and orientational Zn growth can contribute to uniform Zn deposition with restrained corrosion. This review encapsulates the cutting-edge advancements in electrolytes to stabilize the Zn anode. The mechanisms underlying these advancements, encompassing solvation structure design, Zn-electrolyte interface optimization, and kinetics regulation are elucidated. Finally, this paper outlines current challenges and prospects in electrolyte development for ZIBs, providing valuable insights for future endeavors in this field.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Xiaoqing Liu,Peixing Qian,Ze Xu,Lixin Zhang,Chuang Yu
Vanadium dioxide (VO 2 ) cathode with specific tunnel structure and favorable specific capacity is critical for developing aqueous zinc-ion batteries (AZIBs) with excellent electrochemical performance. However, sluggish electrochemical kinetics hampered its development in burgeoning energy storage devices. Herein, we tailored VO 2 material with different exposed crystal planes and employed as cathodes for AZIBs. The comprehensive analyses indicate the exposed (2 0 1) and (0 0 1) crystal planes are favorable for fast electrochemical kinetics, high capacitance storage, and the smallest diffusion energy barrier, which guarantee electrodes with high discharge capacity (367 mA h/g at 0.1 A/g), excellent rate capability (281 mA h/g at 4 A/g) and cycling stability over 800 cycles. Besides, Ex-situ characterizations manifest VO 2 cathode with specific exposed crystal planes easily transformed to Zn 3+x (OH) 2 V 2 O 7 ·2H 2 O in the first discharge process, hence allowing continuous embedding of Zn 2+ in this layered structure, and the ex-situ scanning electron microscopy (SEM) analysis confirms the morphology change matched well with the structural transformation. This study may enlighten and promote the role of exposed crystal plane to develop high-performance rechargeable batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2014
·
IF 2.129
Ting Xu,Hongdong Duan,Xingjian Wang,Xia Meng,Juan Bu
Two novel fluorescence probes based on conjugated Schiff base for the detection of Zn 2+ were developed. Corresponding molecular geometries, orbital energies, electron contributions and absorption properties of the fluorescence probes were calculated at B3LYP/6-31G ∗ by density functional theory. The fluorescence properties of the probes were investigated by UV–vis and fluorescence spectrometer. Results indicate that the probes exhibit excellent sensitivity and selectivity for Zn 2+ compared with metal ions examined. For example, the enhancement efficiency of the compound 2 for Zn 2+ is up to 846%. The detection limit of the sensor toward Zn 2+ could low to 1.0 × 10 −7 M. Moreover, mechanisms for the high selectivity and sensitivity of the probes to Zn 2+ were studied.
研究领域:
分析化学
·
材料科学
·
传感器与生物传感器
·
无机化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）