Journal of Materials Chemistry C
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2024
·Vol. 12
·期 20
·7162-7168
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IF 5.7
Zhenghao He,Zhiqiang Bao,Xiaoyang Guo,Ying Lv,Tienan Wang,Yuejia Ma,Xingyuan Liu
Transparent displays are one of the development directions of future displays, and have great application potential in smart windows, wearable electronic products, virtual reality technology, touch screens and other fields. Perovskite materials have high fluorescence quantum efficiency and high color purity, which make a thin luminous layer achieve high device performance, making us foresee their potential application in the field of transparent displays in the future. However, due to the limitations of the modulation of the luminescent layer and top transparent electrodes, the performance of transparent perovskite light-emitting diodes (TPeLEDs) still has a certain gap compared to the traditional perovskite light-emitting diodes (PeLEDs). In this work, the first blue emitted TPeLEDs were prepared by using quasi two-dimensional perovskite materials and multilayer transparent top electrodes. By designing and optimizing the performance of the luminescent layer and the structure of the top transparent electrode, the transmittance and device efficiency of TPeLEDs were enhanced. The best TPeLED shows a maximum transmittance of nearly 70%, and displays a maximum brightness of 2294 cd m−2 and a maximum external quantum efficiency (EQE) of 11.73%.
研究领域:
材料科学
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光学工程
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电子工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xueying Liu,Yi Hu,Qingxiang Wang,Jiqing Lu,Tian Bai,Feifei Pei,Yu Chen,Wanli Cheng,Dong Wang,Guangping Han
Ionogels exhibit outstanding ionic conductivity, thermal stability, and non-volatility, positioning them as highly promising for sensor devices rivaling hydrogels. However, the inherent limitation of most existing ionogels is that their strength and toughness are not ideal, which significantly hinders their widespread application. One possible method is using natural wood with anisotropic properties to reinforce ionogels. Herein, we reported a top-down approach to obtain a semi-dissolved wood template, in which the delignified balsa wood was heated and impregnated in an ionic liquid to partially dissolve the cellulose in the wood skeleton. Finally, acrylic acid was infiltrated into the wood template, and the wood-based ionogels with a dual network were successfully synthesized by in-situ polymerization. The prepared wood-based ionogels were significantly anisotropic with longitudinal strength up to 9.0 MPa and radial strength of 0.97 MPa. These wood ionogels also have translucency (53.9 %), anti-drying (remain stable at room temperature for more than 30 days), fatigue resistance (>500 loading cycles), and flexibility. In addition, they have excellent electrical conductivity (3.8 μS cm −1 ) with high sensitivity (GF = 8.6), making them ideal candidates for strain sensors capable of detecting a wide range of human activities. The preparation of gel using semi-dissolved wood as a template provides an advanced strategy for producing biomass-based flexible gel materials.
研究领域:
材料科学
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生物医学工程
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可穿戴设备
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jiaxing Chen,Xiaoxuan Guo,Xinyi Zhou,Yun Lu,Ximing Wang
In this study, a top-down approach was adopted to design and develop a wood-based hydrogel with high driving stress, which is used to achieve heavy object lifting and efficient load-bearing. Using the wood cellulose network as the framework and 3-Sulfopropyl acrylate potassium salt (SPA)as the filler, and leveraging the anisotropic expansion behavior of wood cellulose (tangential > radial), we constructed a confined space via a semipermeable membrane to fabricate the wood-based hydrogel. The assembled wood-based hydrogel can exhibit extraordinary mechanical deformation ability and efficient mechanical output when stimulated by external moisture. The driving force of the wood-based hydrogel can reach 951 N, and the driving stress can reach 1.1 MPa, which is much higher than the polymer hydrogels in current research. In addition, the wood-based hydrogel has excellent swelling properties in different pH environments. Among them, in a NaCl solution with a pH of 7, its compressive strength can reach 1.24 MPa. The wood-based hydrogel we prepared not only has excellent cyclic stability and high driving stress, but also can lift a 100 g heavy object by 12 mm in just 6 min under low-voltage osmotic driving conditions. In the future, our wood-based hydrogel is expected to play an important role in fields such as soft robots, automated handling, and bionic load-bearing materials.
研究领域:
材料科学
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生物工程
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Mingzhe Chen,Sailing Zhu,Shaowei Wang,Weisheng Yang,Mingqiang Ye,Yihui Zhou,Shaohua Jiang,Shuijian He,Jingquan Han
Lignin-removed cellulose skeleton (CS) with porous structure and abundant oxygen-containing groups synergized with functional MXene is a promising strategy for constructing high-performance energy storage electrodes. However, the intrinsic instability of MXene under environmental conditions poses a significant challenge to the advancement of MXene-CS (MCS) electrodes. Herein, Polypyrrole@MXene-CS (PPy@MXene-CS, PMCS) electrodes with excellent antioxidant and electrochemical performances are developed by constructing PPy-encapsulated MXene on CS through impregnation and in-situ loading. The impregnated MXene is tightly bound to CS through hydrogen bonding interactions to form the homogeneous MCS conductive network. The in-situ encapsulated PPy not only strengthens the oxidation resistance of MXene, but also imparts the PMCS additional pseudocapacitance. Benefiting from the natural CS pore structure and the synergistic electrochemical energy storage materials, the PMCS electrode demonstrates an area capacitance of up to 2622 mF cm −2 (at 3 mA cm −2 current density) and without significant degradation after two months storage. The assembled quasi-solid-state symmetric supercapacitor exhibits the satisfactory area capacitance (2144.5 mF cm −2 at 3 mA cm −2 ), energy density (21.6 μWh cm −2 ) and cycling capability (93.2 % capacitance retention after 6000 cycles). This work presents a breakthrough strategy for fabricating high-performance and oxidation-resistant CS electrodes, paving the way for advanced energy storage technologies.
研究领域:
材料科学
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能源存储
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电化学
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产品关联
DOI
高影响因子
CHEMISTRY OF MATERIALS
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2021
·
IF 9.811
Zeyu Jin,Juan Lyu,Yi-Lu Zhao,Huanglong Li,Zuhuang Chen,Xi Lin,Guoqiang Xie,Xingjun Liu,Ji-Jung Kai,Hua-Jun Qiu
Designing and fabricating bifunctional electrocatalysts for both the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is crucial to high-performance rechargeable metal–air batteries. Herein, we introduce a generic dealloying procedure to fabricate nanoporous spinel high-entropy oxides (HEO) (AlCoFeMoCr)3O4 as the OER catalysts, incorporated with highly dispersed Pt or PtPdCuAgAu clusters/nanoparticles of ∼1.5 nm in diameters as the ORR catalysts on the porous HEO. Our combined experimental results and first-principles density functional theory (DFT) calculations clearly indicate that the ORR activity of Pt clusters can be enhanced and stabilized through strong interactions with the HEO substrates, and at the same time, the presence of Pt can boost the OER performance of the HEO. In particular, the nanoporous AlCoFeMoCr/Pt composite exhibits a comparable OER activity as the best reported data, while its ORR activity exceeds the performance of commercial Pt/C in alkaline solutions. We expect such multicomponent HEO/metal composite systems would provide a new combinatorial materials design path to ensure multiple catalytic functionalities.
研究领域:
材料科学
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电化学
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催化
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能量存储与转换
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纳米材料
✓ 已验证
DOI
高影响因子
Solar RRL
·
2022
·Vol. 6
·期 9
·2200352
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IF 9.173
Huan Bi,Gaoyi Han,Mengna Guo,Chao Ding,Shuzi Hayase,Hanjun Zou,Qing Shen,Yao Guo,Wenjing Hou
Though great achievements have been realized in perovskite solar cells (PSCs), there are still some thorny challenges that exist such as: 1) How to minimize the interfacial nonradiative recombination losses; 2) How to balance the power conversion efficiency (PCE) and environmental friendliness of the PSCs. Here, effective top-contacts-interface engineering is developed via using a new multi-active site Lewis base molecule named emtricitabine (FTC). Both, experimental and theoretical results confirm that a strong chemical interaction exists between FTC and Pb 2+ . After FTC treatment, the perovskite thin film has the lower density of defect than the control film, meanwhile, the interfacial hole extraction becomes better due to the more matched energy level. Upon the FTC passivation, the PCE of the PSCs is improved from 20.83% to 22.24%. Simultaneously, the humidity stability of the PSCs is improved after the FTC modification. Last but not least, the unpackaged target film showed less lead leakage than the control film.
研究领域:
材料科学
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可再生能源
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化学工程
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DOI
高影响因子
MATERIALS LETTERS
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2025
·
IF 2.7
Xuan Liu,Feifei Guo,Wei Long,Aiguo He,Zengzhe Xi
This study successfully synthesized high-quality BiFeO 3 single crystals using the TSSG technique, overcoming the limitations of conventional flux methods in crystallographic orientation and size control. X-ray diffraction and back-reflection Laue analysis confirmed the orientation of [100]pc, [110]pc, and [111]pc facets. Magnetic characterization revealed: (1) The [110]pc orientation exhibited superior magnetic properties with S-shaped hysteresis loops indicative of glassy ferrimagnetism; (2) Zero-field-cooled and field-cooled curves revealed superparamagnetic blocking temperatures near 50 K and spin-glass-like freezing temperatures at ∼120 K, with T P > increasing as symmetry decreased. This work provides critical insights for crystallographic engineering of multiferroic materials.
研究领域:
材料科学
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多铁性材料
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晶体生长
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磁学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
·
IF 8.2
Yan Fang,Yukai Lin,Yanjing Ou,Linyu Wang,Jiang Chen,Caixia Sun,Yunxiang Wen,Haiqing Liu
Chitin , the second most abundant polysaccharide on earth, possesses unique characteristics, including biosafety, biodegradability , and procoagulant activity, making it an attractive material for hemostasis . However, the conventional bottom-up construction of chitin-based materials is intricate and time-consuming. In this study, we have developed a top-down strategy to prepare a 3D porous chitin-based hemostatic sponge with exceptional hemostatic properties and antibacterial activity , directly from the spongy Pleurotus eryngii . The top-down method involves deproteinization, in situ quaternization, and tannin acid crosslinking. The obtained sponge has an interconnected microporous structure with high porosity (89.7 ± 3.2 %), endowing it with high water absorption (2047 ± 105 %) and rapid water-triggered shape-memory behavior (< 2 s). The sponge exhibits superior blood coagulant activity and outperforms standard medical gauze, gelatin sponge, and chitosan sponge in both topical artery and non-compressive liver puncture wound. In addition, the sponge exhibited significant antibacterial activity against both gram-positive Staphylococcus aureus and gram-negative Escherichia coli . In summary, this study provides a straightforward and practical approach for constructing an antibacterial and hemostatic chitin sponge that could be a valuable option for treating bleeding wounds.
研究领域:
生物材料学
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医学
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化学工程
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DOI
PubMed
高影响因子
Nanoscale
·
2019
·Vol. 11
·期 12
·5180-5187
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IF 6.97
Xu-Dong Wang,Nai-Hua Miao,Jin-Feng Liao,Wen-Qian Li,Yao Xie,Jian Chen,Zhi-Mei Sun,Hong-Yan Chen,Dai-Bin Kuang
The development of an all-inorganic lead-free perovskite nanocrystal is of crucial importance to solve the instability and lead toxicity of organic–inorganic lead hybrid perovskites. Herein, single-layered Cs4CuSb2Cl12 nanocrystals (NCs) with a narrow band gap of 1.6 eV were prepared for the first time via an ultrasonic exfoliation technique. This powerful top-down method was further generalized to synthesize a class of lead-free perovskite (Cs3Bi2X9 and Cs3Sb2X9) NCs. The experimental and theoretical studies revealed that not only inter-layer van der Waals forces but also in-plane chemical bonds played a critical role in the exfoliation process. Specifically, smaller uniform-sized NCs were observed for Cs4CuSb2Cl12 (∼3 nm) as compared to those for Cs3Sb2Cl9 (∼20 nm) although both Cs4CuSb2Cl12 and Cs3Sb2Cl9 exhibited a similar exfoliation energy (∼0.310 J m−2). This can be ascribed to the weaker in-plane chemical bonds of Cu–Cl (2.808 Å) and Sb–Cl (2.924 Å) in Cs4CuSb2Cl12 than the uniform Cl–Sb bond (2.69 Å) in Cs3Sb2Cl9 that allow for an easier exfoliation process. In addition, exfoliation of the Cs4CuSb2Cl12 microcrystal into NCs results in an indirect-to-direct bandgap transition and a reduced electron effective mass, which provides a rapid and steady photoelectrochemical response, demonstrating that Cs4CuSb2Cl12 NCs are a promising candidate for optoelectronic applications.
研究领域:
材料科学
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化学
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产品关联
DOI
PubMed
高影响因子
Fundamental Research
·
2021
·
IF 0
Yannan Zhou,Pengfei Yan,Suoying Zhang,Yunxiao Zhang,Hongwei Chang,Xiaoli Zheng,Jingyun Jiang,Qun Xu
Combining the physical advantages of two-dimensional (2D) inorganic nanosheets and the modular design and programmed structure of metal-organic frameworks (MOFs), 2D MOFs remain at the forefront of functional material research. Despite tremendous efforts, precise control in the synthesis of 2D nonlayered MOFs with predesigned topology for desired applications remains challenging. Success in the bottom-up synthesis of 2D nonlayered MOFs via ligand exchange motivated us to incorporate partial BTC (BTC = 1,3,5-benzenetricarboxylate) ligand dissociation and CO 2 capped coordination into the top-down treatment of bulk Cu-BTC MOF, leading to successful conversion of a 3D nonlayered network to a 2D Cu-based topological structure. Notably, a supercritical CO 2 -containing solvent mixture is employed to provide the desired defect and coordination engineering. Thus, our work introduces a new top-down concept based on modulated synthesis to fabricate high-quality 2D nonlayered MOFs for the first time.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
CHINESE JOURNAL OF CHEMICAL ENGINEERING
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2022
·
IF 3.898
Shaoxiang Cai,Han Yan,Qiuyi Wang,He Han,Ru Li,Zhichao Lou
Biomass-derived residue carbonization has been an important issue for “carbon fixation” and “zero emission”, and the carbonized products have multiple application potentials. However, there have been no specific research to study the differences in macro- and micro-morphology, electrical properties and many other aspects of the products obtained from carbonization of pure cellulose, pure lignin or their complex, lignocellulose. In this work, lignocellulose with cellulose to lignin mass ratio of 10:1 is obtained using p -toluenesulfonic acid hydrolysis followed by homogenization process at a controlled condition. Then, carbon heterostructure with fibers and sheets (CH-10) are obtained by pyrolysis at 1500 °C. Detailed results imply that the fiber-like carbon structure possesses high crystallinity and low defect density, coming from carbonization of the cellulose content in lignocellulose (LC) nanofibers. Correspondingly, the graphite-like carbon sheet with high defect density and low crystallinity comes from carbonization of the lignin content in LCs. Further investigation indicates CH-10 possesses enhanced polarization and moderate impedance matching which makes it an ideal candidate for electromagnetic wave (EMW) absorption. CH-10 exhibits an excellent EMW absorption performance with a minimum RL value of −50.05 dB and a broadest absorption bandwidth of 4.16 GHz at a coating thickness as thin as 1.3 mm.
研究领域:
材料科学
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能源与环境科学
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产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2016
·Vol. 45
·期 41
·16221-16230
·
IF 4.177
Dong-Dong Qin,Yang Li,Xing-Ming Ning,Qiu-Hong Wang,Cai-Hua He,Jing-Jing Quan,Jing Chen,Ying-Tao Li,Xiao-Quan Lu,Chun-Lan Tao
To overcome tough conditions currently used for the preparation of nanostructured hematite films on a conducting substrate, a rational and easy method of chemical etching involving Fe3+ release and material growth in the presence of OH− has been developed. By carefully tuning the parameters influencing the morphologies of hematite, including the synthetic procedure, the concentration of etching solution, temperature, etching time and the morphology controlling surfactant, hematite films grown on iron foil with various morphologies (e.g. nanorod, nanowire, ultrathin nanoflake and cauliflower-like shape) have been achieved. In particular, it is found that F− is an effective surfactant to control the morphology as well as the crystallization process of hematite. Ultrathin nanoflakes having a minimized feature size exhibit the best photocurrent of 0.5 mA cm−2 (1.23 V vs. RHE, RHE is reversible hydrogen electrode) among the samples tested as a result of facilitated hole diffusion to the electrolyte and thus lowered carrier recombination. Compared with pristine hematite, a nearly tripled photocurrent is observed when H2O2 is added in the electrolyte as a hole scavenger, suggesting the presence of a charge injection barrier in the surface of samples. According to this, the strategy of Co2+ treatment is utilized and the improved photocurrent is seen, likely due to the improved water oxidation kinetics and surface state passivation. We believe that this convenient and economical method can be extended to the synthesis of other alkaline metal oxide nanomaterials as long as the redox potential of S2O82−/SO42− is higher than Mn+/M (M refers to metal).
研究领域:
材料科学
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电化学
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纳米技术
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）