Materials
·
2020
·Vol. 13
·期 7
·1719
·
IF 3.057
Qinghui Li,Chang Xu,Bing Huang,Xin Yin
NASICON-type solid electrolytes with excellent stability in moisture are promising in all-solid-state batteries and redox flow batteries. However, NASIOCN LiZr2(PO4)3(LZP), which is more stable with lithium metal than the commercial Li1.3Al0.3Ti1.7(PO4)3, exhibits a low Li-ion conductivity of 10−6S cm−1because the fast conducting rhombohedral phase only exists above 50 °C. In this paper, the high-ionic conductive rhombohedral phase is stabilized by Y3+doping at room temperature, and the hot-pressing technique is employed to further improve the density of the pellet. The dense Li1.1Y0.1Zr1.9(PO4)3pellet prepared by hot-pressing shows a high Li-ion conductivity of 9 × 10−5S cm−1, which is two orders of magnitude higher than that of LiZr2(PO4)3. The in-situ formed Li3P layer on the surface of Li1.1Y0.1Zr1.9(PO4)3after contact with the lithium metal increases the wettability of the pellet by the metallic lithium anode. Moreover, the Li1.1Y0.1Zr1.9(PO4)3pellet shows a relatively small interfacial resistance in symmetric Li/Li and all-solid-state Li-metal cells, providing these cells a small overpotential and a long cycling life.Keywords:NASICON;hot pressing;interfacial resistance;Li-ion conductivity;all-solid-state batteries
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DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Qian Zhang,Xiang-Dong Wang,Ting Tian,Li-Qiang Chu
Surface-enhanced Raman scattering (SERS) sensors have been extensively studied for ultrasensitive detection of diverse chemical or biological analytes. Facile fabrication of highly sensitive SERS substrates is believed to be of crucial importance in these analytical applications. In this regard, the preparation of 3-dimensional (3D) SERS substrates are explored via the incorporation of multilayered silver nanoparticles (AgNPs) into poly (oligo(ethylene glycol) methacrylate) (POEGMA) brushes by repeating the immersion-rinsing-drying steps for different lengths of time (i.e., the so-called in-stacking method). The POEGMA brushes of different chain lengths are synthesized by surface-initiated atom transfer radical polymerization (ATRP) with various reaction time. The resulting POEGMA/AgNP nanocomposites are characterized by FE-SEM, UV–vis and Raman spectroscopy. FE-SEM and UV–vis results indicate that the AgNPs are successfully incorporated into the POEGMA brushes with a 3D configuration. The nanocomposite films are employed as SERS substrates for the detection of a Raman reporter molecule (i.e., 4-aminothiophenol), giving rise to an enhancement factor of up to 1.29 × 10 7 and also having relatively good uniformity and reproducibility. The obtained 3D SERS substrates are also used for the detection of a typical gram-positive bacterium, Staphylococcus aureus . The limit of detection is found to be as low as ca. 8 CFU/mL.
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DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 15
·9581-9585
·
IF 12.732
Yuemin Du,Yijie Liu,Sixie Yang,Chao Li,Zhu Cheng,Feilong Qiu,Ping He,Haoshen Zhou
The fossil fuel crisis and global warming are becoming more and more severe in this century, while the exploration of human survival on Mars is being pushed forward steadily. Hence, it is meaningful to effectively utilize CO2, the main greenhouse gas and a major component of the Martian atmosphere. Due to their high capacity and ability to capture CO2, Li–CO2 batteries have received much attention. However, there are problems that still need to be solved relating to Li–CO2 batteries, including the instability of the electrolyte and the non-negligible polarization caused by the formation and decomposition of Li2CO3. To address these issues, an all-solid-state Li–CO2 battery, which uses RuO2 nanoparticles combined with single-walled carbon nanotubes (SWCNTs) as the cathode material and a sodium super ionic conductor (NASICON)-type ceramic solid electrolyte, Li1.5Al0.5Ge1.5(PO4)3 (LAGP), has been developed and it operates over a broad temperature range. Under a pure CO2 atmosphere, this well-designed battery shows a discharge capacity of 2499 mA h g−1 and a charge capacity of 2137 mA h g−1 in the first cycle at 60 °C, and stable cycling performance over 30 cycles under a capacity limitation of 500 mA h g−1 at a current density of 50 mA g−1. This result enhances the possibility of the utilization of the Li–CO2 battery in the future.
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高影响因子
Nanomaterials
·
2021
·Vol. 11
·期 11
·3122
·
IF 5.076
Rao Fu,Yinyan Gong,Can Li,Lengyuan Niu,Xinjuan Liu
The development of highly active and stable photocatalysts, an effective way to remediate environment pollution and alleviate energy shortages, remains a challenging issue. In this work, a CdIn2S4/In(OH)3nanocomposite was deposited in-situ on NiCr-LDH nanosheets by a simple hydrothermal method, and the obtained CdIn2S4/In(OH)3/NiCr-LDH heterostructure photocatalysts with multiple intimate-contact interfaces exhibited better photocatalytic activity. The photocatalytic H2evolution rate of CdIn2S4/In(OH)3/NiCr-LDH increased to 10.9 and 58.7 times that of the counterparts CdIn2S4and NiCr-LDH, respectively. Moreover, the photocatalytic removal efficiency of Cr(VI) increased from 6% for NiCr-LDH and 75% for CdIn2S4to 97% for CdIn2S4/In(OH)3/NiCr-LDH. The enhanced photocatalytic performance was attributed to the formation of multi-interfaces with strong interfacial interactions and staggered band alignments, which offered multiple pathways for carrier migration, thus promoting the separation efficiency of photo-excited electrons and holes. This study demonstrates a facile method to fabricate inexpensive and efficient heterostructure photocatalysts for solving environmental problems.
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DOI
高影响因子
NANOTECHNOLOGY
·
2021
·Vol. 32
·期 30
·305501
·
IF 3.874
Guifang Luo,Lili Xie,Meng He,Rawat Jaisutti,Zhigang Zhu
A flexible fabric gas sensor for the detection of sub-ppm-level NH3 is reported in this paper. The reduced graphene oxide (rGO)-polyaniline (PANI) nanocomposite was successfully coated on cotton thread via an in situ polymerization technique. The morphology, microstructure and composition were analyzed by field-emission scanning electron microscope, x-ray diffraction, Fourier transform infrared spectroscopy and Raman spectroscopy. Furthermore, we have studied the responses of the rGO-PANI nanocomposite-based flexible sensors for the detection of NH3 varying from 1–100 ppm, operated at 22 °C. At the optimized concentration of rGO, the response of these sensors increased by 4–5 times in comparison with the pristine rGO and PANI. These flexible sensors exhibited fast response, remarkable long-term stability, good selectivity and a low detection limit. The sensing mechanism for the high sensing performance has been thoroughly discussed and it is mainly due to the distinctive 1D fiber structure, the formation of a p-p heterojunction between the rGO nanosheets and PANI. The rGO-PANI composite-based fabric sensor with low power consumption is a potential flexible electronic device for the detection of NH3.
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DOI
高影响因子
AIP Advances
·
2017
·Vol. 7
·期 10
·
IF 1.568
Luo Jiangqi,Fu Qiong,Wang Haiyun,Zhao Dongmei,Luo Laihui,Li Weiping
In order to seek for the single-phase multiferroic metal-organic frameworks (MOFs) materials, we prepared a multiferroic material [NH 2 -CH + -NH 2 ]Co(HCOO) 3 (FMDCo) by solvothermal method. We found that it had weak ferromagnetism below 12.5 K with the coercive fields ( H c ) of 560 Oe, remnant magnetization ( M r ) of 7.67 emu/g and saturation magnetization ( M s ) of 10.3 emu/g and exhibited obvious dielectric relaxation. The octahedral metal ions (Co 2+ ) were linked by formate (HCOO - ) ligands. The AmineH + cation (NH 2 -CH + -NH 2 ) were located within the cube-like cavities of the framework and formed extensive hydrogen bonds with the framework. This improved the phase transition temperature and thermal stability. This finding helps to understand the nature of magnetic and electric ordering in the MOFs.
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高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 12
·7817-7825
·
IF 12.732
Shanshan Duan,Can Huang,Min Liu,Zhiwen Cao,Xiaocong Tian,Shuen Hou,Jiangyu Li,Boyuan Huang,Hongyun Jin
NASICON-type solid state electrolytes have attracted great interest in all-solid-state batteries, and many attempts have been applied to enhance the ionic conductivity. It is generally believed that low activation energy governs the high ionic conductivity while the prefactor, particularly migration entropy, is often overlooked. Here, employing a combination of electrochemical strain microscopy, speed of sound measurements, and electrochemical impedance spectra, we investigate the structure–property relationships governing ionic conduction behavior in the Li1−3xGaxZr2(PO4)3 system. A sharp increase in the prefactor upon Ga substitution is attributed to the increased migration entropy while the increase in activation energy can be rationalized in terms of the inductive effect. These two competitive factors determine the final ionic conductivity.
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Kelin Li,She Chen,Mengbo Li,Linlin Liu,Yunjie Li,Feng Wang
Ammonia is a promising carrier for energy storage due to its high hydrogen content, low storage and transportation costs, and zero carbon emissions. Plasma catalysis shows excellent potential for sustainable ammonia synthesis; however, searching for suitable catalysts is ongoing. La(OH) 3 was studied due to its rich basic sites and oxygen vacancies, which are beneficial for plasma-catalyzed ammonia synthesis. The optimal reaction conditions were investigated, and a maximum ammonia synthesis rate of 37.13 μmol/(min•g -cat ) was achieved. H 2 plasma treatment enhanced the catalytic activity of La(OH) 3 , and ammonia synthesis rate of 40.00 μmol/(min•g -cat ) were achieved. This study contributes to the development of efficient catalysts for plasma-catalyzed ammonia synthesis and highlights the potential of La(OH) 3 as a promising catalyst.
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2020
·
IF 3.807
Zhaohong Su,Daili Tang,Junjie Liu,Xiaolan Yang,Siyu Xu,Wenjing Xu,Yuqing Zhou,Mingyang Xu,Jianlong Yi,Hongmei Jiang,Yuanhua Shao,Xiaoli Qin
A simple and rapid electrochemical synthesis strategy for in-situ fabrication of toluidine blue (TB)-functionalized metal organic framework (TB@MOFs) thin films via one-step reduction approach was reported. The TB@MOFs thin layer has been synthesized on the working electrode surface in different times at room temperature , and its morphology and thickness was characterized by varied instruments, including scanning electron microscope, transmission electron microscope, and scanning ion conductance microscope. The prepared TB@MOFs shows exceptional electrochemical activity and stability under mild conditions, and its electrochemical response is dependent on the amount of TB molecules which are encapsulated in the MOFs. Based on the TB@MOFs sensing platform, a sensitive label-free electrochemical immunosensor for the detection of Indole-3-acetic acid (IAA, a plant hormone) was developed with a wide linear range (2.5 pg mL −1 - 5 ng mL −1 ) and a low detection limit (1.4 pg mL −1 ). Moreover, this immune sensor shows good sensitivity and selectivity in real samples for IAA detection.
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高影响因子
NANOTECHNOLOGY
·
2022
·Vol. 33
·期 13
·135503
·
IF 3.953
Shuyang Hu,Qiuyan Shuai,Yulong Lin,Yan Fu,Meng Li
L-3,4-dihydroxy-phenylalanine (L-dopa) is the most widely used drug in Parkinson's disease treatment. However, development of cost-effective and high-throughput sensors to accurate enantioselective discrimination of L-dopa and D-dopa remains challenging to date. Herein, on the basis of the peroxidase-mimic activity of chiral FexCuySe nanoparticles, we demonstrated a novel colorimetric sensor for determination of chiral dopa. The surface chiral ligand, L/D-histidine (L/D-His), endowed the nanozymes with enantioselectivity in catalyzing the oxidation of dopa enantiomers. According to the values of kcat/Km, the efficiency of L-His modified nanoparticles (L-FexCuySe NPs) towards L-dopa was 1.56 times higher than that of D-dopa. While, D-His can facilely reverse the preference of the nanozyme to D-dopa. On the basis of high catalytic activity and enantioselectivity of L-FexCuySe NPs in oxidation of L-dopa, the L-FexCuySe NPs-based system can be utilized for detection of L-dopa. The linear ranges for L-dopa determination were 5 μM–0.125 mM and 0.125 mM–1 mM with a detection limit of 1.02 μM. Critically, the developed sensor has been successfully applied in the quality control of clinical used L-dopa tablets. Our work sheds light on developing simple and sensitive chiral nanomaterials-based sensors for drug analysis.
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高影响因子
Results in Chemistry
·
2025
·
IF 4.2
Worku Lakew Kebede,Molla Tefera,Amogne Wondu,Melesse Ababay,Abrha Berhe,Mengistu Mulu,Atnafu Guadie
Water contamination caused by textile and industrial dyes is currently among the most important issues facing humanity that require urgent attention. Organic pollutants are harmful and can cause cancer in both humans and aquatic life. Even small amounts of these pollutants in water can lead to grave health problems. One promising way to clean up these pollutants is through degradation, using oxysulfide-based photocatalysts. These materials are effective because of their advanced optical and structural properties. The Sn-Mo(O,S) 3 catalysts were prepared through an easy precipitation process conducted at low temperatures. Different techniques were used to examine the catalyst's shape, structure, electrical properties, chemical makeup, and how it interacts with light. The Sn-Mo(O,S) 3 oxy-sulfide nanoparticle was successfully used to break down organic pollutants through photocatalytic processes. Among the samples made, the SMOS-25 catalyst showed the best performance in breaking down methylene blue dye. The effectiveness of the SMOS-25 catalyst was tested by seeing how well they could break down organic dye pollutant when exposed to visible light. The SMOS-25 nanoparticle was able to remove 98.9 % MB dye from water within 105 min under visible light. In this system, the main substance responsible for breaking down the dye is hydroxyl radical ( • OH).
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产品关联
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2025
·
IF 7.4
Shuangshuang Tian,Chi Yao,Zuolin Huang,Nnditshedzeni Eric Maluta,Ming Yang,Xiaoxing Zhang
Microencapsulated flame retardants with high thermal stability and efficacy are critical for polymer safety. Conventional systems often face issues like poor shell stability and low char residue, leading to early core release and reduced flame-retardant performance. This study presents a novel approach using a silane coupling agent (KH-550) to integrate surface-hydroxylated nano boron carbide (B 4 C) into a melamine-urea-formaldehyde (MUF) shell. Using perfluoro(2-methyl-3-pentanone) (PMP, C 6 F 12 O) as the core material, we developed BMP (B 4 C&MUF@PMP) composite microcapsules through in situ polymerization. These microcapsules, with 6 wt% B 4 C, showed a smooth spherical morphology, sealed micropores, and enhanced thermal stability, with a 5% weight loss temperature rising from 78.3°C to 123°C and char residue increasing from 0.88% to 6.91%. When incorporated into epoxy resin, the EP/BMP composite achieved a limiting oxygen index of 31.2%, passed the UL-94 V-0 rating, and reduced peak heat release rate and total heat release by 48.7% and 48.8%, respectively, while suppressing CO generation. This approach strengthens the MUF shell via B 4 C integration, enabling controlled PMP release and synergistic flame retardancy through a dense char layer, offering a new pathway for high-performance flame-retardant microcapsules.
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）