Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 20
·9723-9732
·
IF 8.867
Jiaguang Zheng,Xuezhang Xiao,Liuting Zhang,Shouquan Li,Hongwei Ge,Lixin Chen
A remarkable improvement in the hydrogen desorption performance of Mg(BH4)2–NaBH4 eutectic composite is achieved by simply ball-milling with fluorographene (FG). It is found that the desorption temperature of Mg(BH4)2–NaBH4 (∼200 °C) is still too high and liquid phase appears during dehydrogenation. Particularly, the novel bowl-like 3D Mg(BH4)2–NaBH4–FG composite can be formed after ball-milling. The novel Mg(BH4)2–NaBH4–FG exhibits a low dehydrogenation temperature of 114.9 °C with 6.9 wt% of pure hydrogen in seconds. In-depth investigations show that such greatly improved hydrogen desorption properties of the Mg(BH4)2–NaBH4–FG composite could be ascribed to both the “novel bowl-like 3D structure” with large specific surface area and the “reactant destabilized modification” owing to the decrease of the reaction enthalpy caused by the formation of NaMgF3. This finding provides a facile preparation of complex borohydride composites with low dehydrogenation temperature and fast rate, which accelerates its practical application in fuel cells.
研究领域:
材料科学
·
氢能存储
·
纳米技术
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Yehu Han,Youzhang Guo,Jianbin Zhou,Xu Ding,Yuchen Zhang,Wanxia Li,Yang Liu,Yawei Chen,Yulin Jie,Zhanwu Lei,Yue Liu,Yong Guan,Yangchao Tian,Tao Cheng,Muqing Chen,Shuhong Jiao,Ruiguo Cao
Calcium metal batteries with high capacity and low cost are promising alternatives to Li-ion batteries for large-scale energy storage. However, its development is crucially impeded by the irreversible Ca metal anode, which is highly associated with uncontrollable Ca plating/stripping. Here, we report a new riveting strategy to regulate the nucleation and growth of a Ca metal anode in the 3D structure of a carbon nanotube film (CNF) by introducing in situ-formed Na metal mediators. Na metal mediators are found to first deposit in the CNF substrate prior to Ca nucleation and subsequently induce dense and uniform Ca plating due to their thermodynamically favorable kinetics. Therefore, even at a high current density of 10 mA cm −2 and a high capacity of 5 mAh cm −2 , it realizes the uniform nucleation and growth of dendrite-free Ca metal. Moreover, an unprecedented cycling life of over 800 cycles is also achieved for Ca metal batteries with a high coulombic efficiency above 98.4%. This work demonstrates the significance of a riveting strategy to enable the superior performance of Ca metal batteries by regulating the plating/stripping behaviors of Ca metal anodes and paves a new way for the development of Ca metal batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NANOTECHNOLOGY
·
2020
·Vol. 31
·期 14
·145717
·
IF 3.551
Wei Yue,Meifeng Hao,Bin Yu,Ruizhuo Ouyang,Yuqing Miao
The synthesis of inorganic micro-/nano-materials by dry combustion is somewhat dangerous since it is performed under high temperature. The ultrathin Bi nanofilms with 3D structures were synthesized using a safe approach of non-combustion explosion in H2O/DMF solution at room temperature and atmospheric pressure. The violent reaction between H2O2 and NH3 · H2O resulted in a non-combustion explosion due to the fast evolution of gases. Then under high temperature and high pressure during solvothermal process, the further slight explosion occurred where the oxygen-containing molecules of H2O2 and NO3− acted as oxidants, while the hydrogen-containing molecules of NaBH4, NH3 · H2O and DMF acted as reductants. The release of gases was accompanied with BiIII reduction by NaBH4. The 3D structure of ultrathin Bi nanofilms with many void spaces formed due to the explosive force and foams from the sharp liberation of gases. Such ultrathin Bi nanofilms with 3D structure exhibited outstanding catalytic activity for p-nitrophenol hydrogenation which is important to treat the environmental pollution from p-nitrophenol discharge. Within only several seconds p-nitrophenol hydrogenation was completed without delay. The non-combustion explosion exhibits potential applications for the synthesis of 3D ultrathin film materials as high efficient catalysts.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Bingzhe Jia,Yujun Liu,Xinrui Qiang,Lei Wang,Gang Zhao,Shanshan Bai,Huanchi Chen,Xinming Wu
Nickel-aluminium layered double hydroxides (NiAl-LDHs) have emerged as promising electrode materials for supercapacitors (SCs) due to their inherently high specific surface area and theoretical specific capacitance, which are primarily attributed to the rapid pseudocapacitive response at the surface. However, NiAl-LDHs typically form agglomerated nanosheets, leading to a significant reduction in specific surface area, which is crucial for enhancing the number of active sites and improving the capacitive properties of the materials. To overcome this limitation, 2D nanostructures were assembled into 3D architectures by synthesizing NiAl-LDHs with distinct morphologies in a one-step hydrothermal process using an alkaline agent (NH 4 F). This approach resulted in the formation of 3D NiAl-LDH/HN 4 F structures, which exhibit a larger contact area and a greater number of redox-active sites. Consequently, the 3D NiAl-LDH/HN 4 F electrodes demonstrated a significantly higher specific surface area, leading to remarkable improvements in specific capacitance (1219 ± 30F g −1 ) and energy density (61 ± 1 Wh kg −1 ) compared to their 2D counterparts. This structural enhancement increases both the surface area and active site density while providing a new framework for designing high-performance LDH-based electrodes.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Baoyi Wu,Yukun Jian,Xiaoxia Le,Han Lin,Shuxin Wei,Wei Lu,Jiawei Zhang,Afang Zhang,Chih-Feng Huang,Tao Chen
Inspired by the high importance of hollow structures in nature such as blood vessels and bamboos in matter transportation, properties enhancement, or even survival of living creatures, the creation of hollow materials remains of considerable interest. However, constructing hollow unique living-like soft and wet polymeric hydrogels with desirable structures and functionalities is still a big challenge. Here, we reported a robust and effective strategy to fabricate complex three-dimensional (3D) hollow polymeric hydrogel with designed shape and function diversity on the basis of supramolecular interactions. By placing a Ca2+ included gelatin core into the solution of alginate, hydrogel shell could be formed along with the shape of the gelatin core via coordination between alginate chains and Ca2+ diffused from gelatin. The hollow hydrogel could finally be obtained by dissolving the gelatin core. Various complex 3D hollow structures could be achieved by designing/constructing assembled gelatin core as a building block with adjustable supramolecular metal coordination position and strength. Moreover, hollow hydrogels with function diversity could be developed by introducing functional polymers or nanoparticles into the hydrogel wall. This work has made important progress in developing hollow polymeric hydrogel with desirable structures, shapes, and various functional applications including soft actuators and chemical reaction containers.
研究领域:
材料科学
·
生物医学工程
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 37
·31565-31573
·
IF 3.289
Junhua Li,Jianbo Jiang,Haibo Feng,Zhifeng Xu,Siping Tang,Peihong Deng,Dong Qian
In this work, a simple, low-cost and eco-friendly strategy for fabricating the three-dimensional porous nitrogen-doped graphene (3D-N-GN) is demonstrated by combining the hydrothermal assembly and freeze-drying process without using any framework support. The desired features for 3D-N-GN, such as rich macroporosity, nitrogen-doping structure and high active surface area have been confirmed by scanning electron microscopy, X-ray photoelectron spectroscopy and electrochemical techniques, respectively. In comparison with two-dimensional graphene (2D-GN) and nitrogen-doped graphene (2D-N-GN), 3D-N-GN makes a more negative shift in the oxidation peak potential of adenine together with a remarkable increase in the oxidation peak current, highlighting the importance of the nitrogen-doping and 3D construction of the graphene-based support for improving the electrocatalytic performance. It also indicates that 3D-N-GN can be used as an efficient electrocatalyst for adenine sensing. Furthermore, the sensing conditions are optimized and the resulting sensor displays excellent analytical performance in the detection of adenine at low concentrations ranging from 0.02 to 1.20 μM, with a detection limit of 8 nM. Finally, this proposed method not only exhibits preferable reproducibility, stability and adequate sensitivity, but also demonstrates good efficiency in the detection of adenine in biological fluids.
研究领域:
材料科学
·
分析化学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
·
2018
·Vol. 10
·期 4
·1-11
·
IF 7.381
Wu Yage,Yang Yunlong,Zhao Xiaoning,Tan Yongtao,Liu Ying,Wang Zhen,Ran Fen
Transition-metal nitrides exhibit wide potential windows and good electrochemical performance, but usually experience imbalanced practical applications in the energy storage field due to aggregation, poor circulation stability, and complicated syntheses. In this study, a novel and simple multi-phase polymeric strategy was developed to fabricate hybrid vanadium nitride/carbon (VN/C) membranes for supercapacitor negative electrodes, in which VN nanoparticles were uniformly distributed in the hierarchical porous carbon 3D networks. The supercapacitor negative electrode based on VN/C membranes exhibited a high specific capacitance of 392.0 F g −1 at 0.5 A g −1 and an excellent rate capability with capacitance retention of 50.5% at 30 A g −1 . For the asymmetric device fabricated using Ni(OH) 2 //VN/C membranes, a high energy density of 43.0 Wh kg −1 at a power density of 800 W kg −1 was observed. Moreover, the device also showed good cycling stability of 82.9% at a current density of 1.0 A g −1 after 8000 cycles. This work may throw a light on simply the fabrication of other high-performance transition-metal nitride-based supercapacitor or other energy storage devices.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MICROELECTROMECHANICAL SYSTEMS
·
2018
·Vol. 27
·期 2
·164-170
·
IF 2.475
Xiaofeng Gong,Rui Zhao,Xiaomei Yu
Single-silicon nanowire field-effect transistor (SiNW-FET) devices are powerful tools for the detection and quantification of biochemical molecules. However, traditional SiNW-FET-based biosensors demonstrate low output signals and high fluctuation noises, which results from the tiny scale of a single channel and electrical property deterioration caused by the dry etching process. To improve the performance of the SiNW-FET biosensors, here we developed a 3-D-SiNW-FET by using a hybrid process of deep reactive ion etching and isotropic wet etching with HF, HNO3 and HAc (HNA) mixed solution. The 3-D-SiNW-FET that included 5 × 7 nanowire channels with a wire diameter of approximately 300 nm was successfully fabricated with the novel hybrid process. Compared with the performance of single-and 2-D-SiNW-FETs, the 3-D-SiNW-FET showed a fairly good ability to stabilize and enhance the source-drain current by parallelizing the signals of the multiple channels. With the fabricated 3-D-SiNW-FET, immunoglobulin G was detected at a concentration as low as 5 fM.
研究领域:
生物医学工程
·
纳米技术
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2017
·
IF 4.162
Quanqing Zhang,Yuanyu Huang,Haofan Sun,Yangyang Gan,Huali Shen,Bin Jia,Pengyuan Yang
Novel 3-D floor-like ordered mesoporous carbon functionalized graphene composites, FLOMC-GO, with high graphitized carbon contents were successfully synthesized using a soft template method. The one-pot sol-gel method was employed to prepare the silica soft template. Then, the sandwich-like composites were further combined together to form a 3-D structure through pre-carbonization and carbonization . During these procedures, the sulphonyl and sulfide bridges were formed by cross-linking processes to connect the phenyl rings. The prepared FLOMC-GO was confirmed to have a large pore volume (1.03 cm 3 g −1 ), high BET surface area (544.99 m 2 g −1 ) and well-ordered mesoporous structure with a narrow pore-size concentrated at 3.74 nm. The content of carbon reached 80% and was highly graphitized. By taking advantage of the interactions between carbon and glycans, FLOMC-GO was utilized to enrich N-linked glycans from OVA and human serum. As expected, excellent size-exclusion was found during the enrichment of N-glycans released from OVA, and 25 N-linked glycans were identified. The intensity of glycans enriched by FLOMC-GO was 7 times to the result of active carbon, while the ratio of OVA digestion to BSA interfering proteins increased to 1:50. Additionally, 31 N-linked glycans in total were enriched from human serum. The relatively easy synthesis as well as ability to enrich N-linked glycans with high selectivity and efficiency makes FLOMC-GO a promising adsorbent material for the discovery of human serum biomarkers for disease diagnosis.
研究领域:
生物材料学
·
糖组学
·
分子诊断
·
纳米医学
·
生物分离技术
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Chengyan Wang,Yangsai Lyu,Jia Li,Li Li,Tingting Li,Jie Yang,Ningning Xing,Xiaolei Zhang
Excessive fluorine can cause a serious threat to human health. It is significant but challenging to develop a straightforward and rapid way to simultaneously detect and remove excess F– from water. Herein, we presented a three-dimensional (3D) hierarchical UiO-66-NH2 nanoparticle/γ-AlO(OH) nanowire hybrid synthesized by a facile biotemplate route for simultaneous detection and removal of F– from water. We elaborately assembled two kinds of materials in a bioinspired 3D hierarchical structure as a functional unit to achieve detection and removal of dual functions. The outer UiO-66-NH2 nanoparticles served as a fluorescent sensor to detect and capture F– via a strong fluorescence enhancement effect caused by the electron transfer from F– and γ-AlO(OH) and acted as the capture unit of F–. The inner γ-AlO(OH) nanowire layer served as a F– absorbent through ion exchange between F– and γ-AlO(OH). The resulting UiO-66-NH2 nanoparticle/γ-AlO(OH) nanowire hybrid displayed excellent selectivity and sensitivity for F– detection (the detection range was 0–5 mM and the limit of detection was as low as 0.77 μM) and high capacity for F– removal (the maximum equilibrium adsorption capacity qmax was as high as 87.0 mg g–1). This dual-function material provided a strategy for simultaneously selective sensing and efficient removal of anionic pollutants from water.
研究领域:
环境科学
·
材料科学
·
化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 16
·9736-9747
·
IF 10.733
Zhenjie Ding,Li Yuan,Guozheng Liang,Aijuan Gu
Thermadapt shape memory polymers with high glass transition temperature and high tensile strength are greatly important for developing high performance self-folding and self-deployable smart 3D structures. Herein, starting from an epoxy resin, ethanolamine, 4,4′-diaminodiphenylmethane and 3-isocyanatopropyltrimethoxysilane, new thermadapt shape memory polymers (EPSis) with highly tunable crosslinked networks and silyl ether dynamic covalent linkages were synthesized. The crosslinked structures and comprehensive performances of EPSis were investigated systematically. The results show that EPSis not only exhibit high glass transition temperatures, which can be adjusted from 118.1 to 156.4 °C, about 38.1–76.4 °C higher than those reported in the literature, but also have high tensile strengths. In addition, EPSis show good thermadapt shape memory behaviours (the shape retention ratio is 80.5–86.3%, the shape fixity ratio is 97.1–98.9%, and the shape recovery ratio is 95.6–99.8%), and they can convert from planar films into various shapes such as a “six-claw stool”, “wave-like rocking chair”, “windmill” and “paper airplane” under heating stimulation, proving that EPSis have great potential for developing high performance self-folding and self-deployable 3D structures. The mechanism study proves that these excellent properties originate from the crosslinked networks based on dynamic silyl ether bonds with both robust toughness and thermal stability, and the topological rearrangement of the network induced by dynamic exchange of silyl ether bonds is responsible for the outstanding thermadapt behaviour. This study provides a unique strategy for developing high performance smart 3D structures.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2021
·
IF 5.302
Lianzhong Zhao,Xiaofeng Wang,Huiwen Xiong,Kechao Zhou,Dou Zhang
3D structured ceramics stemmed from preceramic polymers via additive manufacturing have attracted much attention recently. However, these polymers with high ceramic yield are so brittle that extrusion-based additive manufacturing techniques are hardly able to be utilized for assembling 3D structures. Herein, we developed a strategy to prepare feedstocks for these manufacturing techniques, i.e., utilizing a small amount of thermal-plastic polymer to optimize the preceramic polymer while good compatibility is required between the two polymers to ensure a homogeneous mixture. Polycarbosilane and polypropylene were selected as the representative materials. Polypropylene occupied a small proportion (≤5wt.%) and significantly improved the formability of the precursor. Three-dimensional SiC were obtained via fused deposition modeling combined with crosslinking and pyrolysis. The SiC ceramic filaments showed a mean tensile strength of 471 MPa. The strategy is also applicable to a large field of ceramic systems with corresponding precursor, such as sialon ceramic and multicomponent Si-based ceramics.
研究领域:
材料科学
·
增材制造
·
陶瓷
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）