RSC Advances
·
2014
·Vol. 4
·期 65
·34531-34538
·
IF 3.708
Fei Wang,Yiqing Chen,Chao Liu,Qilin Ma,Tian Zhao,Min Wang
Electron transport and recombination kinetics in dye-sensitized solar cells (DSSCs) based on an urchin-like Zn/ZnO heterostructure are characterized by the intensity modulated photocurrent/photovoltage spectroscopy (IMPS/IMVS), and a dynamic IMVS model correlating to the unique urchin-like configuration is developed for the first time. Intriguingly, the photoanodes with different micromorphology and microstructure generated by tuning the annealing time, show significant discrepancies in electron transport, recombination and charge collection. The photoelectrochemical study reveals that the electron transport properties are closely related with ZnO/electrolyte/dye interface and the metal/metal oxide Schottky junction nanostructure.
研究领域:
材料科学
·
光伏技术
·
纳米技术
·
电化学
·
可再生能源
✓ 已验证
DOI
高影响因子
RSC Advances
·
2021
·Vol. 11
·期 13
·7627-7632
·
IF 3.361
Kun Jiang,Jin Zhang,Rui Luo,Yingfei Wan,Zengjian Liu,Jinwei Chen
It is a great challenge to simultaneously improve the visible light absorption capacity and enhance photon-generated carrier separation efficiency of photocatalysts. Herein, Zn-doped TiO2 nanoparticles with high exposure of the (001) crystal face were prepared via a one-step hydrothermal decomposition method. A detailed analysis reveals that the electronic structures were modulated by Zn doping; thus, the responsive wavelength was extended to 600 nm, which effectively improved the visible light absorption of TiO2. More importantly, the surface heterojunction of TiO2 was created because of the co-existing specific facets of (101) and (001). Therefore, the surface separation efficiency of photogenerated electron and hole pairs was greatly enhanced. So, the optimal TiO2 photocatalyst exhibited excellent photocatalytic activity, in which the Rhodamine B (RhB) degradation efficiency was 98.7% in 60 min, under the irradiation of visible light. This study is expected to provide guidance for the rational design of TiO2 photocatalysts.
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
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Chao Xu,Xuetong Zhao,Lulu Ren,Jianjie Sun,Lijun Yang,Jing Guo,Ruijin Liao
Highly dense CaCu 3 Ti 4 O 12 (CCTO) ceramics co-doped by ZnO and Al 2 O 3 were synthesized by spark plasma sintering (SPS) at 750 °C for 10 min, and then annealed at 1000 °C for 3 h. The homogeneous microstructures were achieved, and the grain size was suppressed to around 2 μm. Dramatically enhanced electrical properties of CCTO ceramics were obtained when 1 mol% ZnO and Al 2 O 3 were co-doped. The breakdown field was improved to 12.13 kV/cm and the nonlinear coefficient was increased to 6.59, accompanying with a low dielectric loss of 0.02 at around 1 kHz, which were ascribed to the elevation of Schottky barrier height from 0.54 eV to 0.80 eV. Comparing with the pure CCTO sample, the activation energy of grain boundary obtained from the impedance spectra increases from 0.64 eV to 0.92 eV. Additionally, the grain and grain boundary resistance were also discussed based on the Cole-Cole plot, from which the grain boundary resistance was found to be increased significantly from 3.8 × 10 5 Ω to 4.0 × 10 6 Ω after co-doping.
研究领域:
材料科学
·
陶瓷
·
电气工程
·
固体物理
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121282
·
IF 7.2
Zijian Zhang,Bonan Liu,Li Yang,Jingwen Wang,Yuqing Dong,Chao Tang,Ping Wang,Haijiao Xie,Lei Zhang,Lu Zhang,Jun Zhao,Yu Fan,Wangjing Ma
Polystyrene (PS) waste recycling remains a critical challenge due to its high energy consumption and limited monomer yield. Herein, the b-ZnO catalyst with a few in-situ formed Zn sites at 270 °C under microwaves enhances the depolymerization of PS waste into monomers. To further improve the PS depolymerization over the b-ZnO catalyst, a series of Zn/b-ZnO catalysts with different metal Zn contents were prepared. Among these catalysts, the optimal 5Zn/b-ZnO achieves nearly 100 wt% PS conversion, yielding up to 0.997 g −1 PS liquid products with 0.8 g −1 PS styrene monomer in five cycles of experiment under microwaves. Such process greatly reduces the energy cost as compared with the conventional thermal process (0.51 vs. 0.81 kWh) and the obtained styrene monomer mixture can be repolymerized into fresh PS to complete a closed-loop recovery (80 wt% PS waste recycled). This work builds a novel microwave-assisted Zn/b-ZnO catalyst system for depolymerizing PS waste into monomers in a highly efficient way, which sheds a light on the sustainable recovery of PS waste.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Jiacheng Li,Xiuli Li,Yan Zhou,Wentao Chen,Wenqi Wang,Jinmin Wang,Dongyun Ma
Dual-band electrochromic smart windows (DESWs) can realize multi-band regulation of solar spectrum, thereby playing a crucial role in achieving building energy conservation. However, independent control of visible (VIS) and near-infrared (NIR) lights for more intelligent indoor comfort is still a significant challenge. Herein, we present an innovative electrochromic smart window design employing a dual-cathode system of ultra-thin (∼80 nm) poly (3,4-(2,2-dimethylpropylenedioxy)thiophene) (PProDOT-Me 2 ) electrode and nanoporous Nb 18 W 16 O 93 electrode with a shared Zn anode, where PProDOT-Me 2 and Nb 18 W 16 O 93 electrodes are used for VIS and NIR control, respectively. Therefore, the Nb 18 W 16 O 93 /Zn/PProDOT-Me 2 device displays four distinct states with multiple color variations, including “bright” (colorless), “cool” (light blue), “warm” (blue-purple) and “dark” (dark blue). Unlike conventional cathode/anode complementary systems, the reversible switching between “bright” and “dark” states can be achieved through simultaneously tuning the color of PProDOT-Me 2 and Nb 18 W 16 O 93 cathodes by Zn anode, which reduces the switching voltages to −1.0 and 2.0 V in organic electrolyte, thereby achieving an excellent cycle performance. Moreover, potential differences between Zn anode and PProDOT-Me 2 /Nb 18 W 16 O 93 cathodes enable the device a self-operation mode by directly connecting the two electrodes with Zn anode, further decreasing energy consumption. This design offers a novel strategy for constructing DESWs with independent VIS and NIR regulation, thereby advancing the application of electrochromic technology in building energy conservation.
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2026
·
IF 4.9
Qinhui Ren,Li Hu,Fuhua Wei,Wei Shang,Min Li,Zhao Liang
The Zn/Mn-MOFs/GO composites were synthesized via a solvothermal method, and their structural characteristics were investigated using XRD, SEM, and FT-IR techniques for the adsorption study of Minocycline and Orange IV. The experimental results show that when the concentration of the minocycline solution is 30 ppm and 150 mg of GO/Zn/Mn - MOF composites is added, the maximum removal rate can reach 94.4%. When the concentration of the Orange IV solution is 30 ppm and 150 mg of GO/Zn/Mn - MOF composites is added, the maximum removal rate can reach 99.7% within 30 min. The influence of pH on the adsorption performance of these composites for Minocycline and Orange IV was thoroughly examined. The adsorption effect is better under acidic conditions. In summary, the Zn/Mn-MOFs/GO composite demonstrates excellent capability in removing Minocycline and Orange IV, offering significant implications for the management of organic pollutants.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2026
·
IF 4.4
Siqi Shen,Qingpeng Wang,Haiyan Qi,Tonghui Yi,Tao Jing,Jun Li,Qingxin Zeng,Yang Gao,Hongxu Zhao
The new Zn-CDs were synthesized with a fluorescence quantum yield of 31.72%. • Zn-CDs exhibited strong antibacterial activity against both E. coli and S. aureus. • Zn-CDs were successfully utilized for MTZ detection by IFE and static quenching. Bacterial infections pose a major global health threat, highlighting the need for the development of effective antibacterial materials. Metronidazole (MTZ), a widely used antimicrobial agent, has raised concerns due to its misuse, emphasizing reliable detection methods. In this study, we synthesized zinc-doped carbon dots (Zn-CDs) via a hydrothermal method using hexahydrate zinc nitrate and histidine as precursors. Zn-CDs were thoroughly characterized for their optical properties, antibacterial activity, cytotoxicity, and potential for MTZ detection. Zn-CDs displayed a uniform spherical morphology with an average particle size of 4.65 nm and excitation-dependent fluorescence. Antibacterial assays revealed their effectiveness against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ), with a minimum inhibitory concentration (MIC) of 313 μg/mL for both bacterial strains. Its antibacterial mechanism relied on the damage of bacterial cell membranes. Furthermore, Zn-CDs exhibited low cytotoxicity and hemolytic activity showing their excellent biocompatibility. Zn-CDs also displayed remarkable photostability, salt tolerance, and pH adaptability, making them suitable for diverse environments. For MTZ detection, Zn-CDs exhibited high specificity and anti-interference properties, with the fluorescence quenching mechanism attributed to the static quenching and internal filter effect (IFE). Furthermore, Zn-CDs were successfully applied to detect MTZ residues in honey, with recovery rates ranging from 92.3% to 101.7%. Overall, this study highlights the dual functionality of Zn-CDs as antibacterial agents and fluorescence-based sensors, offering promising applications in environmental monitoring and food safety analysis. Download: Download high-res image (109KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
Catalysts
·
2026
·Vol. 16
·期 5
·460
·
IF 4.5
Shaomeng Huang,Yiqing Xu,Feijian Jing,Liping Wang,Jiawen Sheng,Qiongqiong He
In the process of pollutant degradation by activating peroxymonosulfate (PMS) with carbon-based Fenton-like catalysts containing Fe as the active site, the influence of Zn atoms on the system has rarely been studied. In this study, by regulating the introduction of Zn sources, Fe-Zn-C and Fe-C catalysts were successfully synthesized for activating PMS to degrade butyl xanthate (BX). The degradation experiment results showed that compared to the Fe-C system, the doping of Zn increased the degradation rate of BX in the Fe-Zn-C system by 10.66%, reaching 91.19% within 120 min. Moreover, by optimizing the reaction conditions, the highest BX degradation efficiency of 96.54% was achieved within 30 min. Through instrumental analysis, Fe and Zn elements were found to exist on the surface of the catalysts in the form of Fe2+Fe3+2O4and ZnO crystals, and the catalytic oxidation reaction was dominated by non-free radical pathways, including1O2and direct electron transfer pathways. No free radicals were produced during the reaction, and it was speculated that Zn atoms played the role of an electron bridge in the reaction system, mediating electron transfer and enhancing catalytic performance through their synergistic effect with Fe. Comprehensive stability evaluation indicated that Fe-Zn-C ensures continuous catalytic activity and ecological safety with a low dissolution rate in aqueous solution. This study provides a new approach for the design of Fenton-like catalysts and the induction of non-radical pathways.
✓ 已验证
DOI
高影响因子
Science Advances
·
2026
·Vol. 12
·期 19
·
IF 13.9
Chuan Li,Xiu Hu,Rong Zhang,Shaoce Zhang,Huilin Cui,Qinshun Nian,Yuwei Zhao,Chunyi Zhi
In 1952, the first commercially alkaline Zn||MnO 2 primary battery was developed, which is based on Mn 4+ /Mn 3+ redox reactions (MnO 2 ↔Mn 2 O 3 ). Subsequently, the single-electron (Mn 3+ /Mn 2+ and Mn 7+ /Mn 6+ ) and two-electron (Mn 4+ /Mn 2+ ) redox reactions of Mn compound (Mn-Comp) were achieved in aqueous Zn-based batteries. After that, however, the new Mn multivalent change redox reaction was no longer observed. In this study, we report a neutral superhydrophilic hydrogel electrolyte that activates a Mn 2+ /Mn 7+ conversion reaction (Mn 2+ ↔MnO 4 − ). This advance is attributed to an expanding electrochemical stability window and high Mn 2+ reaction activity. This enables a discharge plateau of ≥2.2 V in aqueous Zn metal batteries. The high reversibility of Mn 2+ /Mn 7+ conversion reactions during cycling was achieved by incorporating chelation groups in the designed hydrogel electrolyte, which effectively stabilizes the MnO 4 − . The aqueous Zn||Mn-Comp battery with a 2.2-V discharge plateau operates stably for ≥360 hours.
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2026
·
IF 5.5
Yu Huan,Li Haoran,Sun Shichao,Wang Xin,Chen Zhongwei
Rechargeable aqueous Zn metal batteries have emerged as compelling options for grid-scale energy storage applications, benefiting from a favorable combination of economic viability, operational safety, and excellent rate performance. The lifespan and Coulombic efficiency (CE) of Zn metal anodes (ZMAs) are constrained by dendrite growth and side reactions. Herein, we report a freestanding host for ZMAs based on N-doped thorn-like carbon fibers derived from a covalent organic framework (COF) and embedded with Cu nanoparticles (COF-NCF@Cu). The 3D macroporous architecture with thorn-like COF-derived N-doped carbon nanoarrays contributes to reduced current density and effectively mitigates electrode volume variation throughout cycling. Furthermore, the zincophilic Cu nanoparticles embedded in the N-doped carbon matrix provide homogeneous nucleation sites that significantly lower the overpotential for zinc nucleation, thereby promoting subsequent uniform zinc deposition. Accordingly, the COF-NCF@Cu host delivers exceptional reversibility, affording stable Zn plating/stripping for over 2800 h at 10 mA cm –2 , and the corresponding full cell with a COF-NCF@Cu-Zn anode sustains 6000 cycles with negligible capacity decay.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2025
·
IF 14.9
Zhiyong Liao,Yongbo Fan,Fang Yan,Ruizhe Zhang,Huiqing Fan
Aqueous Zn metal batteries (AZMBs) are plagued by hydrogen evolution and interfacial alkalization induced by water and its decomposition products (H + and OH − ), which critically undermine the reversibility and cycling stability of zinc plating and stripping. To address this challenge, oxamic acid (OA), a small bipolar molecule containing both carboxyl and amide groups, is proposed as a multifunctional electrolyte additive. OA forms hydrogen bonds with water molecules, thereby reconstructing the hydrogen-bond network and effectively suppressing both proton transport and hydrogen evolution. Meanwhile, OA dynamically scavenges OH − generated from water decomposition, thus mitigating the generation of alkaline byproducts. Additionally, OA is adsorbed onto the zinc surface, promoting the formation of a water-depleted inner Helmholtz layer and limiting the interfacial reactivity of water. Combined ex situ/in situ characterizations, molecular dynamics simulations, and density functional theory (DFT) calculations collectively verify that OA significantly mitigates parasitic reactions and enhances the stability of the Zn/electrolyte interface. As a result, Zn||Zn cells exhibit over 4000 h of stable cycling at 2 mA cm −2 and a cumulative plating capacity of 6.875 Ah cm −2 at 5 mA cm −2 . Zn||Cu cells maintain a high Coulombic efficiency of 99.5% over 4500 cycles, Zn||α-MnO 2 full cells retain 80.1% of their capacity after 2000 cycles, and pouch cells retain 81.5% of their capacity after 600 cycles, highlighting the practical feasibility of this interfacial regulation strategy.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 23
·1580
·
IF 2.8
Guo Zexuan,Wang Nan,Fei Xiaomiao,Yang Feng,Zhao Man,Peng Yanyan,Zhang Jing,Jiang Dayong
The generation, transfer, and collection of plasmon-derived hot electrons represent a distinctive pathway for photodetectors to utilize solar energy. However, previously reported devices have a low internal quantum efficiency due to excessively high Schottky barrier. The coupling distance between working medium and metal nanoparticles (NPs) is one of the key factors affecting the performance of optoelectronic devices. We constructed a dual-surface plasmon-enhanced (Mg, Zn)O-ultraviolet (UV) photodetector by applying Pt NPs and found that the assembled device exhibited broad sensitivity ranging from 340 to 370 nm at room temperature. Intense dual plasmonic resonance coupling is induced in a hybrid structure of two metallic layers separated by uniform ZnO-based films. Using surface plasmon-enhanced materials, the changes in the refractive index of ZnO/Pt/MgZnO and MgZnO/Pt/ZnO heterogeneous double-layer in the dielectric environment are beneficial for the tunneling of hot electrons. ZnO/Pt/MgZnO is superior to MgZnO/Pt/ZnO in terms of responsivity and response time. The responsivity of the ZnO/Pt/MgZnO device peaks at 2.87 A/W, exhibiting the great potential of dual plasmonic resonance coupling in a UV photodetector, which was finally investigated via Mie scattering. The response time of the photodetectors in a steady-state is 0.2 s, 0.3 s, while 0.1 s, 0.73 s is the response time of the photodetectors (PDs), which paves the way for future application advancements in the field of photodetection, imaging, photovoltaics, and photochemistry.
研究领域:
光电子学
·
纳米光子学
·
等离激元学
·
半导体器件
·
光电探测
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）