JOURNAL OF LUMINESCENCE
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2022
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IF 4.171
Qian Meng,Liuyun Chen,Liang Jing,Qi Pang,Jin Zhong Zhang
Herein, we develop a facile strategy to synthesize one-dimensional Sn-incorporated CsMnCl 3 microcrystals (MCs) via an acid dissolution method under high humidity. The prepared CsMnCl 3 (H 2 O) α :0.50%Sn (α = 0 or 2, noted as CMCH:0.50%Sn) MCs exhibit an intense red emission assigned to 4 T 1g → 6 A 1g transition of Mn 2+ with a photoluminescence (PL) quantum yield (QY) of 15.77%, which is four times than that of pristine CsMnCl 3 (H 2 O) 2 MCs, with an activation energy of 160 meV determined from a temperature-dependent PL Boltzmann analysis. Sn 2+ ions incorporation can promote the formation of anhydrous CsMnCl 3 and are likely bonded to Cl ions. A red LED device based on CMCH:0.50%Sn MCs shows ultra-high color purity at a drive current of 300 mA and good stability. This work successfully addresses the issue of typically low PL QY of lead-free manganese halide perovskite-analogues (MHPAs) and provides insight into the fundamental optical properties and phase transformation mechanisms of all-inorganic MHPAs.
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MATERIALS CHEMISTRY AND PHYSICS
·
2023
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IF 4.6
Jingpi Gao,En Li,Kena Song,Tongtong Ma,Ran Yang,Yi Zhang,Nan Li,Xiaoran Liu,Jinghua Li
The dye degradation method based on Fenton-like heterogeneous nanostructures has gained significant attention in recent years. We have developed a Copper-Stannum-Polypyrolle-Heterogeneous (Cu–Sn oxide-PPy Heterogeneous, CSPHGs) catalytic system. The system uses a PN junction formed by two oxide semiconductors (Cu 2 O and SnO 2 ) as the core, which is then coated with polypyrolle (PPy) on the outer layer. Under near-infrared (NIR) light irradiation (500.0 μg ml −1 , 1.2w·cm −2 ), the temperature rapidly reached approximately 45 °C within 5 min, demonstrating excellent photothermal performance. We have overcome the limitation of traditional Fenton reactions that require weak acidic conditions for effective operation. Moreover, we have increased the photostability of Cu 2 O monomers by incorporating them into a three-layer heterostructure . The Rhodamine B (RhB) degradation experiment revealed that the generated reactive oxygen species (·OH), effectively catalyze the decomposition of dyes. Within 120 min, the degradation rate exceeded 99%. This research provides a new option for environmental remediation through the combination of photo-Fenton and photothermal processes.
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APPLIED SURFACE SCIENCE
·
2022
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IF 7.392
Hongyuan Li,Bowen Zhang,Bo Zhang,Hari Bala,Xiangli An,Nian Sha,Zeyu Sun,Wei Zhang,Zhanying Zhang
All-inorganic perovskite materials have attracted much attention in the field of photocatalysts due to their unique photoelectric properties.However, the inherent poor stability of perovskite quantum dots significantlyhinders their practical applications. Herein, to settle the instabilities of inorganic perovskite materials, Sn-TiO 2 coated CsPbBr 3 quantum dots named CsPbBr 3 /Sn-TiO 2 , are fabricated via resaturated recrystallization, sol–gel coating and solvothermal crystallization.The XRD results demonstrated that the core–shell structure of CsPbBr 3 /Sn-TiO 2 nanocrystals was successfully synthesized.Moreover, excellent dispersion is verified for CsPbBr 3 /Sn-TiO 2 nanocrystals with a core–shell structure by TEM. The particle size of CsPbBr 3 /Sn-TiO 2 nanocrystals is 15–30 nm, where the core size for CsPbBr 3 quantum dots is 4–8 nm, and the Sn-TiO 2 shell thickness is 2–8 nm.The photocatalytic activity of nanocomposites was studied by the photodegradation of RhB aqueous solution under the irradiation of 100 mWcm −2 air mass 1.5 global AM1.5G sunlight. Compared with traditional photocatalyst P25, the core–shell structured CsPbBr 3 /Sn-TiO 2 nanocrystals exhibited better photocatalytic performance, with a degradation efficiency of 96.6% and a degradation rate constant of 10.68 × 10 -2 min −1 in 30 min of catalytic time, which was five times higher than that of P25.The core–shell structured CsPbBr 3 /Sn-TiO 2 nanocrystals have long-term stability in water system and have potential practical application value in the field of environmental governance.
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APPLIED SURFACE SCIENCE
·
2021
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IF 6.707
Min Yang,Li Liu,Hanxiao Yan,Wen Zhang,Die Su,Jiaxing Wen,Wen Liu,Yiting Yuan,Junfang Liu,Xianyou Wang
The key to the development of wearable electronic equipment lies in the design of flexible batteries, in which the electrodes with outstanding mechanical behavior are quite important. Herein, porous nitrogen-doped Sn/C fibers (P-Sn/C-N Fs) film has been successfully synthesized via simple electrospinning and subsequent calcination process in which folic acid and polymethylmethacrylate (PMMA) play the role of introducing nitrogen and forming pores, respectively. The introduction of nitrogen improves the electronic conductivity of the material, and the presence of porous structure increases the specific surface area. More importantly, when the P-Sn/C-N Fs film is used directly as a free-standing electrode for lithium ion batteries, it exhibits outstanding electrochemical performance. The P-Sn/C-N Fs film exhibits a discharge capacity of 712.1 mAh g −1 at 500 mA g −1 after 500 cycles. Even at the high current density of 5 A g −1 , it displays a high discharge capacity of 429.1 mAh g −1 after 1000 cycles. These findings indicate that the P-Sn/C-N Fs film has the potential to be applied as free-standing anode materials for lithium ion batteries.
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Nature Communications
·
2020
·Vol. 11
·期 1
·1-11
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IF 12.121
Cao Wenbo,Cheng Simin,Yang Jing,Feng Jiaxin,Zhang Wenpeng,Li Zishuai,Chen Qinhua,Xia Yu,Ouyang Zheng,Ma Xiaoxiao
Lipids play a pivotal role in biological processes and lipid analysis by mass spectrometry (MS) has significantly advanced lipidomic studies. While the structure specificity of lipid analysis proves to be critical for studying the biological functions of lipids, current mainstream methods for large-scale lipid analysis can only identify the lipid classes and fatty acyl chains, leaving the C=C location and sn -position unidentified. In this study, combining photochemistry and tandem MS we develop a simple but effective workflow to enable large-scale and near-complete lipid structure characterization with a powerful capability of identifying C=C location(s) and sn -position(s) simultaneously. Quantitation of lipid structure isomers at multiple levels of specificity is achieved and different subtypes of human breast cancer cells are successfully discriminated. Remarkably, human lung cancer tissues can only be distinguished from adjacent normal tissues using quantitative results of both lipid C=C location and sn -position isomers.
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高影响因子
Nanomaterials
·
2021
·Vol. 11
·期 9
·2203
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IF 5.076
Hong Wang,Yuejin Ma,Wenming Zhang
Nanoscale Fe3O4-Sn@CNFs was prepared by loading Fe3O4and Sn nanoparticles onto CNFs synthesized via electrostatic spinning and subsequent thermal treatment by solvothermal reaction, and were used as anode materials for lithium-ion batteries. The prepared anode delivers an excellent reversible specific capacity of 1120 mAh·g−1at a current density of 100 mA·g−1at the 50th cycle. The recovery rate of the specific capacity (99%) proves the better cycle stability. Fe3O4nanoparticles are uniformly dispersed on the surface of nanofibers with high density, effectively increasing the electrochemical reaction sites, and improving the electrochemical performance of the active material. The rate and cycling performance of the fabricated electrodes were significantly improved because of Sn and Fe3O4loading on CNFs with high electrical conductivity and elasticity.Keywords:Fe3O4;Sn;carbon nanofibers;lithium-ion batteries;anode material
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ELECTROCHIMICA ACTA
·
2019
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IF 5.383
Fajun Li
Metals have proved to be cracking catalysts for electrochemical reduction of CO 2 to formate (ERCO 2 F), but they suffer from a high overpotential caused by weak adsorption of CO 2 . As far as we know, N-containing polymers, with N atoms lowering the activation energy through efficient trapping of CO 2 , can make contributes to ERCO 2 F. Here, a composite electrode of metal and N-containing conjugated polymer at the interface was used for CO 2 reduction. It exhibited superior Faradaic efficiency (94% ± 1%) and space time yield (306 ± 14 μmol h −1 cm −2 ) at the electrolytic potential of −1.70 V for electrochemical reduction of CO 2 to formate. Polyaniline film was obtained by potentiostatic reduction of pre-completed polyaniline nanowires from polymerizing aniline on Ni foam. Then the spontaneous oxidation of base polyaniline was used to promote the reduction of tin deposition on its surface.
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JOURNAL OF CRYSTAL GROWTH
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2015
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IF 1.698
Huacheng Cai,Wendong Wang,Peiwen Liu,Guangming Wang,Ankang Liu,Zhe He,Zhaofang Cheng,Shengli Zhang,Minggang Xia
We demonstrate tin (Sn) nanowires growth enhanced by Selenium (Se) atoms via physical vapor transport (PVT) method. The Raman spectroscopy, X-ray diffraction, scanning electron microscopy and high-resolution transmission electron microscopy show that Sn nanowires are synthesized with a large quantity, good quality and high purity of Sn. The growth of Sn nanowires is attributed to Solid–Vapor–Liquid mechanism. The effects of gold nanoparticles catalyst, Si substrate, and Se atoms on Sn nanowires growth are discussed in detail. We find that Se atom plays a key role in the growth of Sn nanowires. The gaseous Sn atoms are absorbed by the eutectic alloy droplets of Se–Au at first. Then Sn atoms precipitate at the liquid–solid phase interface due to a supersaturated solution and form a one-dimensional nanostructure. In all, this PVT method could provide a simple and quick way to synthesize monocrystalline Sn nanowires with an advantage in both quality and quantity. The optical transmittance of Sn nanowires thin film with 2 μm 2 density approaches 85–90% in visible wavelength. Therefore, the Sn nanowires thin film can be applied to transparent electrode along with their metallic property.
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ACS Applied Materials & Interfaces
·
2025
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IF 8.2
Zhiqiang Dai,Jie Liu,Qizhi Hou,Chengwu Yang,Xueqing Zhang,Manunya Okhawilai,Prasit Pattananuwat,Xinyu Zhang,Jiaqian Qin
The construction of artificial solid electrolyte interfaces on zinc anodes is recognized as an effective strategy to mitigate zinc dendrite formation and side reactions; however, existing methods are often complex and time-consuming. In this study, we successfully fabricated a highly stable Sn–Al sol protective layer on the surface of the zinc anode using a simple spray-coating technique. This protective layer significantly enhances the electrochemical performance of zinc symmetric cells, achieving stable cycling for over 2500 h at 1 mA cm–2. In Zn//Cu half-cells, the Sn–Al sol coating improves charge–discharge efficiency and cycling stability, with over 500 and 950 cycles at 1 and 5 mA cm–2, respectively. The average charge–discharge efficiency during stable cycling reaches 95.7%, in contrast to 85.0% for bare Zn, indicating improved utilization of Zn2+. Additionally, the Sn–Al sol coating offers enhanced corrosion resistance and effectively promotes uniform Zn2+ growth along the (101) crystal plane, reducing dendrite formation. Overall, this simple spray-coating approach presents significant potential for high-stability modifications of zinc anodes, offering a novel strategy for the industrial application of zinc-ion batteries.
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INTERNATIONAL JOURNAL OF PHARMACEUTICS
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2024
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IF 5.3
Danjun Wu,Kaili Fu,Wangyang Zhang,Yazhen Li,Yaning Ji,Yiwei Dai,Gensheng Yang
The clinical application of 7-ethyl hydroxy-camptothecin (SN-38) maintains challenges not only due to its poor solubility and stability but also the lack of effective carriers to actively deliver SN-38 to deep tumor sites. Although SN-38-based nanomedicines could improve the solubility and stability from different aspects, the tumor targeting efficiency remains very low. Leveraging the hypoxic taxis of bifidobacteria bifidum ( B. bifi ) to the deep tumor area, we report SN-38-based nanomedicines-engineered bifidobacterial complexes for effective tumor-targeted delivery. Firstly, SN-38 was covalently coupled with poly-L-glutamic acid (L-PGA) and obtained soluble polymeric prodrug L-PGA-SN38 to improve its solubility and stability. To prolong the drug release, L-PGA-SN38 was mildly complexed with chitosan to form nanomedicines, and nanomedicines engineered B. bifi were further elaborated via electrostatic interaction of the excess of cationic chitosan shell from nanomedicines and anionic teichoic acid from B. bifi . The engineered B. bifi complexes inherited the bioactivity of native B. bifi and exhibited distinctly enhanced accumulation at the tumor site. More importantly, significantly elevated anti-tumor efficacy was achieved after the treatment of CS-L-PGA-SN38 NPs/ B. bifi complexes, with favorable tumor suppression up to 80%. Such a B. bifi -mediated delivery system offers a promising platform for effective drug delivery and enhanced drug accumulation in the hypoxia deep tumor with superior anti-tumor efficacy.
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JOURNAL OF POWER SOURCES
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2024
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IF 8.1
Xiaobo Wang,Kaixuan Huo,Zhengqiu He,Jialiang Liu,Qingshan Zhao,Jinqiang Zhang,Mingbo Wu
Stannic oxide (SnO 2 )-based lithium-ion batteries (LIBs) have garnered tremendous attention due to their high theoretical capacity and suitable lithium ion insertion potential. However, their widespread applications have been hindered by severe electrode degradation caused by substantial volume expansion of SnO 2 . In this study, we embedded amorphous carbon encapsulated ultrafine SnO 2 nanoparticles on hollow macroporous carbon (AC@SnO 2 /HMC) as a superior anode material for LIBs. The unique Sn–C interface and dual carbon protection layers effectively mitigated SnO 2 nanoparticle agglomeration and volume expansion, reinforcing the cycling stability. Additionally, the capacitive contribution from amorphous carbon significantly improved the reversible capacity and rate capability. As such, the resulting AC@SnO 2 /HMC electrode exhibited high capacity (1828 mAh g −1 after 200 cycles at 0.1 A g −1 ), excellent rate capability (1017.6 mAh g −1 at 1 A g −1 ), and outstanding cycling performance (792.1 mAh g −1 after 880 cycles at 2 A g −1 ), surpassing previously reported SnO 2 -based anodes. Furthermore, the AC@SnO 2 /HMC-based Li-ion full cell demonstrated a remarkable capacity of 566.3 mAh g −1 at 0.2 A g −1 after 200 cycles. This study offers valuable insights into the development of advanced SnO 2 -based anodes for LIBs and beyond, highlighting their potential for future advancements in battery technology.
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JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2024
·Vol. 39
·期 4
·805-813
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IF 1.3
Xu Tianxing,Wu Jie,Li Yajuan,Xiao Hong
We synthesized size-controllable nanoparticles with homogeneous distribution of carbon and Sn/SnO 2 by a solvothermal method. The effects of different carbon content and hydrothermal time on the composition, morphology and electrochemical properties of the materials were investigated. Compared with bulk materials, nanoparticles materials not only have high specific surface area, but also can provide abundant reaction sites, thus enhancing the electrochemical activity of electrode materials. More importantly, the optimized microspheres Sn/8C-24 delivers a superior electrochemical performance, achieving a specific discharge capacity of 700.4 mAh·g −1 after 150 cycles at 0.5 A·g −1 , and the Coulomb efficiency reaches 98.65%, which is promising for anode of LIBs.
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