INORGANIC CHEMISTRY COMMUNICATIONS
·
2023
·
IF 3.8
Xiaoqian Jing,Yang Xu,Zizheng He,Dongyun Li,Rui Wang,Minjia Wang
Sb 2 Se 3 is a promising light-absorbing material with low cost and good photocatalytic activity. In this paper, Sb 2 Se 3 thin films doped with zinc (Zn) were deposited on ultra-white glass by hydrothermal method, using ZnCl 2 , sodium selenate and antimony potassium tartrate as raw materials. And the photocatalytic activity was evaluated by photocatalytic decolorization reaction with methylene blue (MB) solution. The results showed that the highest photocatalytic activity was displayed when Zn 2+ was doped with 0.10 mmol, and its degradation rate of methylene blue was 1.66 times higher than that of pure Sb 2 Se 3 . Zn 2+ doped Sb 2 Se 3 film can effectively inhibit the recombination of electron-hole pairs, thereby improving the optical activity. According to the free radical capture experiment, photogenerated holes (h + ) and superoxide radicals (·O 2− ) are the decisive active substances in the photocatalytic process. This method provides a reliable way for transition metal ions doped metal selenides to degrade organic dyes.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2018
·Vol. 53
·期 10
·7138-7149
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IF 2.993
Liang Zhen,Zhang Xiaojun
In this article, TiO 2 -modified ZnO nanotube arrays (NTAs) are successfully synthesized and used to prepare a nonenzymatic biosensor for the detection of glucose and hydrazine hydrate. In brief, the ZnO@TiO 2 NTAs are synthesized on zinc foil by two steps of simple hydrothermal method. Therefore, it can be directly used as a working electrode and is not needed to be modified to other electrode surface by any means to form a sensor. In the oxidation of glucose and reduction reaction of hydrazine hydrate, it exhibits excellent electrocatalytic performance. Moreover, it has high sensitivity, a fast response time (less than 3 s), and a detection limit as low as 0.5 μM (S/N = 3) toward glucose and hydrazine hydrate respectively. In the selectivity of the target analyte, the Zn–ZnO@TiO 2 nanocomposite electrode can effectively resist the influence of different interferent, including uric acid, dopamine, and l -cysteine.
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APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Yanping Zhu,Runliang Zhu,Gangqiang Zhu,Miaomiao Wang,Yannan Chen,Jianxi Zhu,Yunfei Xi,Hongping He
Nowadays, two-dimensional (2D) nanosheets, such as layered double hydroxides (LDH), have received considerable attention for their potential to meeting clean energy demand and solving environmental problems. In this work, novel and efficient photocatalysts of plasmonic Ag nanoparticles coated Zn/Ti-LDH nanosheets have been synthesized through low-temperature reduction method. The structural characteristics of the as-prepared products were investigated by a series of characteristic methods The scanning electron microscopy (SEM) and transmission electron microscope (TEM) images showed that Ag nanoparticles were distributed on the surface of Zn/Ti-LDH uniformly. The UV–vis diffuse reflectance spectra (DRS) showed that the absorbance of Ag/LDH in visible-light region enhanced markedly and presented a broad band at 500–600 nm, which was resulted from the surface plasmon resonance (SPR) effect of Ag nanoparticles. The photocatalytic activities of Ag/LDH were evaluated by degradation of Rhodamine-B (RhB) and NO. The photocatalytic experiments showed that Ag/LDH had higher photocatalytic activity than that of pure LDH , and 2%Ag/LDH exhibited the highest photocatalytic activity. In addition, the 2%Ag/LDH exhibited high photochemical stability after multiple reaction runs. The obtained results from photoluminescence (PL) spectroscopic measurement and transient photocurrent ( I – V ) analysis both revealed the existence of Schottky barriers between LDH and Ag nanoparticles. The electron spin resonance (ESR) showed that OH were the dominant active species in the photo-degradation process. The enhanced photocatalytic performance of the composite should be ascribed to both the SPR effect of Ag nanoparticles in visible light and the Schottky barriers between LDH and Ag nanoparticles.
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ACS Applied Energy Materials
·
2022
·
IF 6.959
Chunmei Yuan,Xin Zhong,Peishu Tian,Zhe Wang,Guanghui Gao,Lianfeng Duan,Chunsheng Wang,Fengwei Shi
Hydrogel electrolytes have attracted great attention because the properties of integrated conductivity and mechanical flexibility endow them with potential applications in flexible solid-state batteries. However, hydrogels are easy to freeze when the temperature drops below zero, resulting in the reduction of ionic conductivity and mechanical strength of hydrogels. Herein, an antifreezing polymer hydrogel electrolyte was developed by introducing a zwitterionic group and salt into the double-network polymer. The polymer hydrogel electrolyte possessed a perfect ionic conductivity of 10.38 mS cm–1 at −20 °C and could remain unfrozen until −50 °C. A flexible solid-state Zn//LiFePO4 battery assembled with the prepared hydrogel electrolyte exhibited a discharge capacity of 126.1 and 75.1 mAh g–1 at 20 and −20 °C at 1 C, respectively. In addition, it showed quite perfect cycling performance and maintained a capacity retention of 72.6% after 1000 cycles with a favorable Coulombic efficiency (∼100%) at −20 °C at 1 C. The hydrogel electrolyte with perfect antifreezing performance is supposed to broaden the range of working temperature and practical applications of the zinc ion battery.
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高影响因子
Materials Chemistry Frontiers
·
2021
·Vol. 5
·期 24
·8319-8332
·
IF 6.482
Zhanwei Zhou,Jiuyuan Xu,Yuxuan Liu,Chen Wei,Hengyang Zhang,Qun Wang
The B-site doping of organic–inorganic lead halide perovskites of the form MAPbX3 is not only an effective way to improve energy conversion (solar-electrical, thermal-electrical, solar-chemical, etc.) performance, but it is also eco-friendly, reducing the toxic Pb content. To the best of our knowledge, there are few reports on the photocatalytic and thermoelectric properties after the partial doping of Zn2+ into the Pb2+ lattice sites of perovskite MAPbBr3 crystals fabricated through a solvothermal route (Zn–MAPbBr3). Systematic characterization, including XRD, EDS, XPS, UV-vis, PL, N2 adsorption/desorption, Hall measurement, time-resolved photoluminescence measurement (TRPL), and electrochemical analysis, showed that the smaller Zn2+ guests increase the Goldschmidt tolerance and octahedral tilting factor of MAPbBr3 and enhance the carrier concentration, carrier mobility and conductivity, active site number, and oxidation abilities of Zn–MAPbBr3. Finally, Zn–MAPbBr3 crystals exhibited an improved absorption capacity and better photocatalytic degradation performance toward RhB dye and improved thermoelectric transportation properties, including better electrical conductivity and a more positive Seebeck coefficient, compared with pristine MAPbBr3.
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ACS Nano
·
2021
·
IF 15.881
Xinliang Li,Na Li,Zhaodong Huang,Ze Chen,Yuwei Zhao,Guojin Liang,Qi Yang,Mian Li,Qing Huang,Binbin Dong,Jun Fan,Chunyi Zhi
With fluidity and dangerous corrosiveness, liquid insulating bromine elemental (Br2) can hardly be confined by traditional conductive carriers (mainly carbon materials) for efficient redox without shuttle behavior. Thus, stationary Br2-based energy storage devices are rarely advanced. Here, we introduce an electrochemical active parasite Br2 to the Ti3C2TXMXene host and construct an advanced aqueous zinc redox battery via a facile electrodeposition process (Br-Ti3C2TX). Both ex situ experimental characterizations and density functional theory (DFT) simulations have validated the natural affinity between MXenes and Br species, which is manifested as their spontaneous fixation accompanied by rapid transfer of electrons in the interface region and interlayer confinement. Consequently, the battery delivers a high-voltage plateau at 1.75 V that contributes to an improved energy density of 259 Wh kg–1Br (144 Wh kg–1Br-Ti3C2TX), exhibiting efficient output capability in the high-voltage region. Besides, benefiting from enhanced redox kinetics, the capacity achieved at −15 °C approaches to 69% of the value at room temperature. More importantly, an excellent 10 000 cycles at −15 °C with negligible capacity decay is identified. The paradigm represents a step forward for developing stationary aqueous metal-Br2 batteries.
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PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2020
·
IF 6.551
Xingwen Lu,Zebiao Huang,Zhihong Liang,Zhe Li,Jiani Yang,Yujie Wang,Fei Wang
Struvite recovered from wastewater can be used as a slow-release fertilizer. Nevertheless, hazardous metals easily precipitated with struvite would increase the ecological risk for its agricultural use. In this study, the influence of individual and coexistence of Cu and Zn on the precipitation of struvite was investigated. The loading of Cu and/or Zn in precipitates increased with the increase of initial metal concentrations (0.1–100 mg/L). Quantitative X-ray diffraction (QXRD) analysis revealed that the increase of Cu and/or Zn level in reaction solution disturbed crystal growth of struvite and promoted the formation of amorphous phase(s). Scanning electron microscopy (SEM) revealed the pit formation on struvite crystal surfaces, combined with X-ray photoelectron spectroscopy (XPS) data, the results indicated a surface interaction for the formation of Cu-OH and Cu-NH 3 on struvite surface at Cu of 0.1–10 mg/L. With the increase of Cu to 25–100 mg/L, the precipitation of amorphous Cu phosphate(s) was confirmed by XPS and QXRD. At Zn of 0.1–10 mg/L, the enrichment of Zn-PO 4 and Zn-OH on struvite surface was observed, whereas, the precipitation of amorphous Zn hydroxide(s) was confirmed at Zn of 25–100 mg/L. At Cu and Zn co-existed solution, the decrease of Cu-PO 4 and increase of Zn-PO 4 suggested the competitive binding of PO 4 between Cu and Zn. In addition, the formation of amorphous Mg hydroxide(s) and phosphate(s) was detected regardless of the addition of Cu in solutions. The overall results revealed that the existence of Cu and Zn during struvite formation can greatly affect its content by formation of different metal-containing products.
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PubMed
高影响因子
Frontiers in Materials
·
2020
·
IF 2.705
Wan Jun,Li Junfeng,Xiao Zhiheng,Tang Dandan,Wang Bo,Xiao Yongjun,Xu Weilin
High-performance, good stability, low-cost, and environmentally friendly batteries are important for multifunctional electronics and electric vehicles. Compared with the high-energy density lithium-ion batteries, aqueous rechargeable battery has been extensively researched due to high safety, low cost and much better rate performance. Here, we report a one-step approach to fabricate porous Ni-Cu metal–organic framework (MOF) nanosheet arrays structures for stable energy storage with a high-energy (71.2 mWh cm−3) and high-stability (capacity retention of ≈91% after 2,500 cycles) performance. Furthermore, we synthesized various porous homogeneous Ni-Co, Ni-Zn, Ni-Fe and Ni-Mn bimetal MOF structures with high surface area and conductivity utilizing this rational design. This work provides a simple efficient strategy for constructing porous homogeneous bimetal MOF nanosheet arrays with high energy and stability performance, holding a great potential for future portable electronics.
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Small
·
2025
·
IF 12.1
Xinyi Sun,Zhang Wen,Yiwen Liu,Min Zhang,Wei Li,Chuanchao Sheng,Sixie Yang,Haoshen Zhou,Ping He
Environmental-friendly aqueous Zn−CO 2 batteries present bifunctional potentials of achieving carbon neutrality and energy storage. Nonetheless, anode corrosions derived from H 2 O molecules and high risks of volatilization and leakage hinder the advancement of Zn−CO 2 batteries. In this work, polyvinyl alcohol (PVA)-based hydrogel electrolyte with fast ion diffusion kinetics, high mechanical strength, and flexibility is developed to replace liquid electrolyte. Since hydroxyl radicals in the polymer chain can interact with H 2 O and Zn 2+ , electrode corrosion from free H 2 O and active H 2 O around Zn 2+ is significantly inhibited, facilitating the uniform deposition of Zn 2+ cations. The introduction of an ionic liquid plasticizer further enhances the interaction between Zn 2+ and polymer backbone, as well as amorphous extent of the electrolyte. The hydrogel electrolyte possesses adequate self-healing ability, whose ionic conductivity reaches 7.95 × 10 −3 S cm −1 . The symmetric Zn metal batteries containing the electrolyte remain steady for >2000 h under different current densities. Furthermore, the Zn−CO 2 battery based on Ru nanoparticles cathode and hydrogel electrolyte realizes a discharge capacity of 6028 mAh g −1 and stable cyclicity for 90 times. The reaction path of hydrogel electrolyte-based Zn−CO 2 battery is that CO 2 is reduced to ZnCO 3 and C species followed by reversible decomposition of discharge products on recharge.
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高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2017
·Vol. 32
·期 18
·3585-3592
·
IF 1.673
Xinjun Shi,Jinju Zheng,Minhui Shang,Tingting Xie,Jiangbo Xie,Sheng Cao,Weiyou Yang
In this work, we reported the growth of cadmium-free Ag-doped Zn–In–S nanocrystals (NCs) with effective photoluminescence (PL) via a hot-injection strategy. The effects of the nucleation temperatures, reaction times, and Ag-doping concentrations on the PL properties of Ag-doped Zn–In–S NCs were investigated systematically. The as-synthesized NCs exhibit color-tunable PL emissions covering a broad visible range of 472–585 nm. After being passivated by a protective ZnS shell, the PL quantum yield (QY) of the resultant NCs was greatly improved up to 33%. With the increase of the Ag-doping level, the PL is significantly intensified due to the improved concentration of Ag ions which provides more holes to recombine with electrons from the bottom of the conduction band. This also makes the emission via the dopant energy level become a powerful, competitive advantage for the NCs with higher Ag-doping levels, resulting in a longer lifetime and higher PL QY. These results suggest that tailoring the Ag-doping level can be a powerful strategy to control the optical properties of Ag-doped Zn–In–S NCs.
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高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2017
·
IF 2.084
Qiuhua Yuan,Jianbo Wu,Caoping Qin,Anping Xu,Ziqiang Zhang,Yaning Lin,Zehui Chen,Songxin Lin,Zhiyang Yuan,Xiangzhong Ren,Peixin Zhang
Zn-doped hydroxyapatite/graphene (Zn-doped HA/GP) composite was successfully in situ synthesized by one-pot hydrothermal treatment for the first time, and was studied through experimental analysis and density functional theory calculations. The effects of a series of Zn contents (0mol%, 1mol%, 5mol%, 10mol% and 20mol%) on the HA crystal structure, the morphology and composition of composites were also investigated. The obtained doped composites were analyzed and characterized by the techniques of field emission scanning electron microscopy (FESEM) coupled with energy dispersive X-ray detector (EDX), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM) and Raman spectroscopy . Density functional theory calculations of Zn-doped HA showed that the replacement of Zn ions in HA crystal lattice could cause the OH − group to move off the c axis toward the Zn ions and become closer to the PO 4 3− group, resulting in the formation of hydrogen-bond between OH − and PO 4 3− groups. The morphology of Zn-doped HA/GP composite showed that Zn-doped HA grains with molar fraction of 1 mol% Zn are intimately attached on the surface of graphene whereas the amounts of Zn-doped HA attached on the GP surface reduce obviously and the interfacial interactions are weakened accordingly as the Zn doping amount increased from 5 to 20 mol%, which indicates that the low crystallinity of Zn-doped HA particles due to an increasing Zn content may have a negative effect on interfacial interaction between Zn-doped HA and GP.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2015
·
IF 2.999
Xin Wang,Cuiping Xie,Jiasong Zhong,Xiaojuan Liang,Weidong Xiang
Highly luminescent AgInS 2 –ZnS quantum dots were obtained by a one-pot two steps hot injection approach. The effect of the reaction time on the properties of the quantum dot was systematically investigated. By the introduction of Zn ions , the emission peak was blue-shift from 638 nm to 584 nm in 15 min, while the emission peaks of the obtained AgInS 2 –ZnS quantum dots were tuned in a narrow range with a bit red-shift from 584 to 589 nm as the reaction was continued. The highest photoluminescence quantum yield (PL QY) was up to about 72% when the reaction was prolonged to 15 min. Further, results showed that the morphologies were varied as the reaction was continued. In addition, the PL decay curves demonstrated that the component of PL bands resulted from Zn doping was observed, while the PL behavior was originated from the donor-acceptor recombination.
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