Materials Chemistry Frontiers
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2021
·Vol. 5
·期 14
·5336-5343
·
IF 6.482
Shuyuan Li,Zhongyuan Huang,Yinguo Xiao,Chunwen Sun
Solid-state electrolytes (SSEs) are expected to replace liquid electrolytes in lithium metal batteries (LMBs) with good safety and mechanical strength. However, the existing problems of the Li1.3Al0.3Ti1.7(PO4)3 (LATP) electrolyte, like its poor contact with electrodes, serious side reactions and low ionic conductivity, limit its practical application. In this work, a chlorine (Cl)-doped LATP electrolyte showing a high ionic conductivity of 0.423 mS cm−1 was successfully synthesized. Neutron powder diffraction (NPD) results reveal that the change of the Li+ coordination environment after Cl doping has an effect on the ion diffusion path in the bulk LATP. The fabricated Li symmetric battery with the Cl-doped LATP exhibits long-term compatibility and electrochemical stability against the lithium metal anode. The enhanced performance may be attributed to the in situ formed stable solid electrolyte interphase (SEI) layer. Meanwhile, compared to the LATP electrolyte, the Li|LiFePO4 (LFP) full battery with Cl-doped LATP as an electrolyte has an improved rate performance and cycling performance. This work demonstrates that Cl doping may be an effective approach for improving the performance of the LATP electrolyte.
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JOURNAL OF ASIA-PACIFIC ENTOMOLOGY
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2020
·
IF 1.101
Yunhao Gao,Donglin Li,Dongyang Li,Pengfei Xu,Kaikai Mao,Yunhua Zhang,Xueying Qin,Tao Tang,Hu Wan,Jianhong Li,Mingcheng Guo,Shun He
Nanopesticides with antiwashing capacity on leaves are the most promising new approaches for sustainable pest management and have been fully evaluated in the laboratory. However, few studies have tested these nanopesticides on pests, and their efficacy under field conditions has not been investigated. In this study, an adhesive hollow mesoporous silica hybrid with well-defined spherical shape and good monodispersity was used as a nanocarrier of cyantraniliprole (CNAP) to fabricate an adhesive nanopesticide (CNAP-HMS-PDAAM). The control efficacy of CNAP-HMS-PDAAM was tested under field conditions. The results indicated that the efficacy of four doses of CNAP-HMS-PDAAM (30.0–69.0 g a.i./ha) against Cnaphalocrocis medinalis (Guénee) 3, 7, and 14 days after spraying did not significantly differ from that of Benevia (34.5 g a.i./ha). Twenty-eight days after spraying, the efficacy of all four doses of CNAP-HMS-PDAAM was significantly better than that of Benevia. Additionally, the efficacy of CNAP-HMS-PDAAM at doses of 34.5, 39.0 and 69.0 g a.i./ha against Chilo suppressalis (Walker) were significantly higher than that of Benevia (34.5 g a.i./ha). Thus, CNAP-HMS-PDAAM showed long-term control efficacies against C. medinalis (Guénee) and C. suppressalis (Walker), mainly due to its strong adhesive property on rice leaves and its sustained release properties. In addition, the nanocarriers showed good biocompatibility and had no obvious influence on the growth of rice.
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ACS Applied Polymer Materials
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2022
·
IF 4.855
Min Liu,Zhuoer Cai,Yang Xu,Jinzhong Hu,Baiwang Sun
Rare earth-based polystyrene (PS) fluorescent microspheres, which vigorously combine the merits of rare earth elements and polystyrene microspheres, hold great potential for applications in the state-of-the-art technology and tremendous efforts have been devoted to the photoluminescence field. Herein, a 5-acrylamido-1,10-phenanthroline (Aphen) and Eu(III)-based polystyrene fluorescent microsphere was developed via a facial copolymerization strategy. The optimal complexes of Eu(β-NTA)3(Aphen) and Eu(BFA)3(TPPO)2 were fabricated as the luminescent materials. Specifically, Eu(β-NTA)3(Aphen)-PS was modified for the first time to enhance the photoluminescence property, which effectively integrated the Aphen with styrene monomer. Meanwhile, Eu(BFA)3(TPPO)2 was encapsulated into PS microspheres for the realization of Eu(BFA)3(TPPO)2-PS via an ubiquitous embedding process. The fluorescent intensity of Eu(β-NTA)3(Aphen)-PS was notably reinforced along with an increasing concentration of the rare earth complexes. However, the fluorescence intensity of Eu(BFA)3(TPPO)2-PS was decreased when the concentration was 50 mg due to the saturated solubility of the complexes. The obtained copolymerization fluorescent microspheres could prevent the premature leakage of the fluorescent complexes in a natural environment and showed an outstanding photoluminescence efficiency.
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INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
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2013
·
IF 1.24
Meiling Wang,Jing Zhang,Nini Ding,Zhidong Chen
In this work, a sensitive and simple method was first developed for electrochemical determination of Ponceau 4R (E 124) based on an expanded graphite paste electrode (EGPE) by the square-wave stripping voltammetry (SWSV) method. The EGPE displayed good analytical performance for the measurement of Ponceau 4R. Under the optimum experimental conditions, Ponceau 4R could be linearly detected in the wide concentration range of 1.0 × 10−8 to 3.0 × 10−6 M, with a detection limit down to around 6.3 × 10−9 M at signal to noise ratio of 3:1. The developed method was successfully applied to the determination of Ponceau 4R in food samples with satisfying results and the results agreed with those from the high performance liquid chromatography (HPLC).
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Journal of Renewable Materials
·
2020
·Vol. 8
·期 3
·289-300
·
IF 1.341
Li Qiaoguang,Gong Sheng,Yan Jie,Hu Hongchao,Shu Xugang,Tong Hanqing,Cai Zhiye
The plasticizer is an important polymer material additive. Non-toxic and environmentally friendly plasticizers are developed recently in order to decrease fossil fuel reserves, serious environmental pollution and the toxicity of phthalate esters. In this study, a new, efficient and
environmentally friendly plasticizer of hydrogenated rosin dodecyl ester was prepared by an esterification reaction of hydrogenated rosin and dodecanol. The influences of different reaction conditions (including different catalysts, the catalyst concentration, the ratio of the reactants, reaction
temperature, and reaction time) on the esterification yield are examined and discussed. Hydrogenated rosin dodecyl ester with 71.8% yield was synthesized under the optimized reaction conditions (1:0.8 molar ratio of rosin to dodecanol, 1 mol% tetrabutyl titanate concentration, and 210°C
for 6 h). The esterification reaction is a second-order reaction, and kinetic calculations showed that the activation energy is 39.77 KJ·mol–1. The structure of the hydrogenated rosin dodecyl ester was confirmed by FT-IR spectroscopy and 13C NMR spectrum.
Besides, the thermal stability of target product (hydrogenated rosin dodecyl ester) was also tested by thermal gravimetric analysis (TGA), which showed a good thermal stability.
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Sustainable Materials and Technologies
·
2021
·
IF 7.053
Zhengwei Wan,Yingchong Huang,Xiaomin Zeng,Xinzhu Guo,Zhuoying Wu,Miaomiao Tian,Gu Wu,Min Ling,Zeheng Li,Xuehui Gao,Chengdu Liang
The binder plays a crucial role in maintaining electrode structure and improving the cycling performance in Li S batteries , especially for high–energy–density batteries. Here, a natural biopolymer peach gum (PG) was developed as sulfur cathode binder for the first time. PG binder owns abundant carboxyls and hydroxyls, which can form strong interaction between Li O and further effectively constrain polysulfides from shuttling. Besides, strong adhesion force and superior mechanical behavior of PG help to keep the electrode integrity and good electrical contact. Therefore, PG@S electrode achieves an impressively high discharge areal capacity of 27.10 mAh cm −2 with sulfur loading of 26.3 mg cm −2 .
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Cell Reports Physical Science
·
2023
·
IF 8.9
Chunyan Zuo,Feng Zhou,Gaowei Zhang,Liubiao Zhong,Jianjun Ling,Jun Yang,Yejun Qiu,Guohua Tao
Minimizing the potential drop due to serial resistances in electrocatalytic systems and the corresponding energy overhead is required to achieve better overall catalytic performance. However, the role of the support is normally overlooked through iR compensation. Here, a silver nanowire (AgNW) aerogel-based support is developed to generate highly energy-efficient catalytic systems upon catalyst loading. In a case study of two Ni-based catalytic systems for the hydrogen evolution reaction (HER), outstanding performance is achieved with ultralow solution resistance (R s ∼ 0.3 Ω) and overpotential without iR compensation (87 and 77 mV at 100 mA cm −2 in 1 M KOH, respectively). Density functional calculations support the theoretical hypothesis that the support-induced hierarchical nanostructures of the loaded catalyst could result in favorable hydrogen adsorption sites and enhanced conductivity and HER activity. This work thus opens up the possibility of developing highly efficient catalytic systems using NW-based supports.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
·
IF 5.518
Zuozhu Yin,Dongpeng Zhou,Kaiyuan Liu,Min Li,Xiaoxiang Chen,Mingshan Xue,Sheng Lei,Junfei Ou,Yidan Luo,Zeming Ren
Artificial superhydrophobic coatings with mechanical stability , chemical stability, and physical stability have been achieved separately. However, achieving these properties at the same time is still a challenge. In this paper, a novel combination of sintering and spraying strategy was proposed to design a 509 reagent (1, 1, 2, 3, 3, 3-hexafluoro-2-(trifluoromethyl)propane-1-sulfonate)@Cu nanoparticles/Cu mesh/Cu organic-inorganic multilayer superhydrophobic coating. Surprisingly, the superweting coatings exhibit strong mechanical robustness undergoing cyclic tape peeling, sand/sandpaper abrasion and ultrasonic treatment. At the same time, the superhydrophobic coatings are also exposed to high temperature, UV irradiation and boiling water treatment to test its chemical stability. Moreover, the superhydrophobic coatings demonstrate outstanding physical robustness undergoing tensile force due to the combination of 509 reagent, Cu nanoparticles and Cu mesh. With multifaceted robustness, this superhydrophobic multilayer coating could be used in high-tech equipment area (such as: wear-resistance moving machine components, microfluidic devices , fluid microchips, microreactors , and so on) with strong alternating or impact loads , high friction service, and chemical corrosion.
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Cell Reports Physical Science
·
2022
·
IF 7.832
Lei Lu,Mengyao Yang,Youngseo Kim,Tingting Zhang,Nahyun Kwon,Haidong Li,Sungnam Park,Juyoung Yoon
Biocompatible aggregation-induced emission (AIE) materials from natural resources are of great interest for a variety of potential applications. Here, we report the unconventional AIE nature of the green tea polyphenol epigallocatechin gallate (EGCG), which is investigated by observing the disappearance and reoccurrence of fluorescence when EGCG is dissolved and recrystallized in aqueous solutions. The intermolecular through-space conjugation and structural rigidification induced by multiple intermolecular H-bonds play critical roles in the AIE phenomenon. This inspires the development of a multicolored, monodisperse, photostable, and non-toxic nano-AIE luminogen (nano-AIEgen), which is simply prepared by polyphenol-amine-based crosslinking in aqueous solutions, demonstrating great potential for living cell bioimaging. Our strategy to develop nano-AIEgens using AIE-active hydrophilic natural products—e.g., plant polyphenols, such as tannic acid, that exhibit similar AIE characteristics—can help push the boundary of the exploration of various novel, large-scale, biocompatible, water-soluble, and degradable AIE materials from natural resources.
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APPLIED ENERGY
·
2021
·
IF 9.746
Z.H. Zhang,L. Wei,M.C. Wu,B.F. Bai,T.S. Zhao
Employing chloride ions as additive in electrolytes is proposed for all vanadium redox flow batteries. The influences of different concentrations of chloride ions in the electrolyte on the battery performance are investigated. It is found that the chloride ions improve the reaction activity of VO 2+ /VO 2 + redox couples. At a current density of 200 mA cm −2 , the battery with an optimum chloride ion concentration of 0.04 M attains an energy efficiency and vanadium utilization ratio of 82.5% and 86.3%, which are 2% and 4.1% higher than those without the additives. Further, at 400 mA cm −2 , the battery with 0.04 M chloride ions shows a high rate capability by delivering the specific discharge capacity of 5.95 Ah L −1 . Moreover, the battery with 0.04 M chloride ions exhibits the capacity retention rate of 83.1% after one hundred cycle test, which is nearly 12% higher than that of pristine battery. The results suggest that chloride ions, as low-cost additives in electrolytes, offer great promise for high-performance vanadium redox flow battery application.
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Journal of Coatings Technology and Research
·
2021
·Vol. 18
·期 4
·1065-1073
·
IF 2.382
Liu Haitao,Cao Hailin,Huang Yudong,Shao Pengcong,Yan Yiwu
An ambient-curable hybrid resin (ACHR) terminated with trimethoxysilane functional groups, synthesized through a simple ring-opening reaction between 3-glycidyloxypropyltrimethoxysilane (KH560) and 4,4′-methylenebis (cyclohexylamine) (PACM), was applied to the surface of a transparent organic polymer to produce a robust, flexible, and transparent protective hybrid film, moisture cured at room temperature. The structure, morphology, and optical, mechanical, and thermal properties of the obtained hybrid film were evaluated. The hybrid film allowed the transmittance of more than 87% of visible light (at 600 nm), maintaining almost the same high transparency as bare PET film. The unique flexible segments and rigid segments in the inorganic–organic hybrid structure of the film realized superior resistance to bending and scratching. The hybrid film-coated PET demonstrated excellent flexibility, with an extremely low bending radius, illustrated by wrapping around a 1-mm mandrel bar without cracking. In addition, the hybrid film exhibited superior pencil hardness (of 2H) and excellent wear durability, i.e., no scratching after being subjected to 200 abrasion cycles using #0000 steel wool under a 19.6 kPa load. The robust, flexible, and transparent protective film developed here, and its simple and efficient preparation method, should have extensive application prospects.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-10
·
IF 14.7
Lv Jiabao,Cao Ang,Zhong Yunhao,Lin Qingyang,Li Xiaodong,Wu Hao Bin,Yan Jianhua,Wu Angjian
Renewable-driven electrocatalytic nitrate conversion offers a promising alternative to alleviate nitrate pollution and simultaneously harvest green ammonia. However, due to the complex proton-electron transfer processes, the reaction mechanism remains elusive, thereby limiting energy efficiency. Here, we adopt Ni(OH)₂ as a model catalyst to investigate the dynamic evolution of the reaction interface. A proposed OH cycle mechanism involves the formation of a locally OH-enriched microenvironment to promote the hydrogenation process, which is identified through in-situ spectroscopy and isotopic labelling. By further activating the dynamic state through the implementation of surface vacancies via plasma, we achieve a high Faradaic efficiency of almost 100%. The activated interface accelerates the OH cycle by enhancing dehydroxylation, water dissociation, and OH adsorption, thereby promoting nitrate electroreduction and inhibiting hydrogen evolution. We anticipate that rational activation of the dynamic interfacial state can facilitate electrocatalytic interface activity and improve reaction efficiency.
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