ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 31
·期 24
·2010987
·
IF 18.808
Di Yang,Chunyu Zhao,Ruqian Lian,Lin Yang,Yizhan Wang,Yu Gao,Xu Xiao,Yury Gogotsi,Xudong Wang,Gang Chen,Yingjin Wei
The propensity of Li to form irregular and nonplanar electrodeposits has become a fundamental barrier for fabricating Li metal batteries. Here, a planar, dendrite-free Li metal growth on 2D Ti 3 C 2 T x MXene is reported. Ab initio calculations suggest that Li forms a hexagonal close-packed ( hcp ) layer on the surface of Ti 3 C 2 T x via ionic bonding and the lattice confinement. The ionic bonding weakens gradually after a few monolayers, resulting in a nanometers-thin transition region of hcp -Li. Above this transition region, the deposition is dominated by plating of body-centered cubic ( bcc ) Li via metallic bonding. Formation of a dense and planar Li metal anode with preferential growth along the (110) facet is explained by the lattice matching between Ti 3 C 2 T x and hcp -Li and then with bcc -Li, as well as preferred thermodynamic factors including the large dendrite formation energy and small migration barrier for Li. The prepared Li metal anode shows stable cycling in a wide current density range from 0.5 to 10.0 mA cm –2 . The LiFePO 4 ‖Li full cell fabricated with this Li metal anode exhibits only 9.5% capacity fading after 500 charge–discharge cycles at 1 C rate.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Changchang Li,Xinyang Zhao,Chao Li,Junhua Hu,Jinyang Zhu,Qing Lou,Niu Chen,Zhijiang Song,Xu Chen,Gencai Pan
Room temperature phosphorescence (RTP) materials are highly attractive in many fields, but it is still a great challenge to obtain RTP materials with color tunability. Herein, we report a new type of multicolor phosphorescence carbon dots (CDs) through confining CDs into rigid crystal network through the introduction of ionic bonds . The RTP color can rationally vary from green (553 nm) to orange-red (640 nm) under different excitation wavelengths. More importantly, the obtained CDs can also maintain their RTP emission in ethanol solution. The excitation-dependent property was owing to the existence of polychromatic emission centers on the surface of CDs, and the generation of RTP can be attributed to the ionic bond in CDs system to suppress non-radiative transition of triplet states. Based on this unique multicolor RTP phenomenon, the CDs were successfully applied in anticounterfeiting and light-emitting diodes. This finding not only provides a new strategy for the preparation of multicolor RTP materials but also reveals a great potential of CDs in developing novel optical materials.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2022
·
IF 9.463
Li Yang,Mingliang Wu,Xueli Yang,Baofeng Lin,Lihua Fu,Chuanhui Xu
This study reports healable, recyclable, and adhesive rubber composites equipped with ester linkages, Zn 2+ ionic bonds , and H-bonds based on carboxylic styrene butadiene rubber (XSBR), nano-ZnO, and diglycidyl ether of bisphenol A (DGEBA). Zn 2+ ionic cross-links are introduced into XSBR networks through the acid-base reaction between nano-ZnO and carboxyl groups of XSBR. The in-situ generated Zn 2+ is thus evenly dispersed in the rubber matrix to serve as transesterification catalyst, which promotes the healing and reprocessing of the rubber composites at a higher temperature. The healing efficiency of the rubber composites can realize 75% and further improved to 90% after introducing additional hydroxyl groups. The rubber composites can reprocess at least 5 times. Moreover, the rubber composites are easily disintegrated to recycle neat XSBR due to the dissociation of ester linkages in the alkaline solution. Interestingly, the rubber composites show a surprising reversible adhesion property under water stimulation.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2021
·
IF 6.953
Shuangzhu Jia,Changan Li,Hongyan Pan,Meng Wang,Xianshu Wang,Qian Lin
Using chitosan as the carbon source, F127 as the template, and sodium tripolyphosphate as cross-linking agent, a hydrogen bond and ionic bond double-driven mesoporous carbon material was prepared via the sol-hydrothermal method and its formation mechanism was discussed. According to the results from FTIR , Raman, XPS , physical adsorption analyzer, SEM, TEM , and TG-IR, the mesoporous carbon material was formed under the synergistic effect of hydrogen bond and ionic bond has a mesoporous volume of 0.44 cm 3 /g, a BET surface area of 262 m 2 /g, and possesses the ideal unimodal distribution around 2.20 nm. The mesopores are originated from the degradation of hydrophobic segment PPO of F127, and the micropores come from the gases CO 2 , CO, NH 3 , CH 4 , tetraethylene glycol dimethyl ether, and 2,6-diisopropylphenyl isocyanate produced during the degradation of prepolymers. The maximum adsorption capacity of this mesoporous carbon for tannic acid (Sips model) at 30 °C is 70.4 mg/g.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
POLYMER
·
2024
·
IF 4.1
Anqi Cai,Yalan Chen,Xinxin Zhang,Jinli Zou,Jinbei Yang,Ajoy Kanti Mondal,Yang Wu,Zuwu Tang
There is a great deal of scientific interest in developing simple, adaptable, and affordable strategies for adhesive preparation. In this study, we present that naturally generated, inexpensive tannic acid (TA) can function as an effective gelation binder for the adhesive formulation with a series of commercially available water-soluble polymers. Due to the presence of a five-polyphenol-arm structure of TA, it can grip the polymer chain by hydrogen bonds or ionic bonds . These effective interactions can be properly balanced by adjusting the weight ratios of polymer to TA, which is the fundamental indication for the preparation of supramolecular adhesives. The prepared supramolecular adhesives demonstrate the variety of functionalities such as good adhesion performance, excellent biocompatibility, and free radical scavenging capabilities. TA as a dynamic and adaptable catechol group modifier renders a facile route for the preparation of multifunctional adhesives, which depicts evident advantages including easy and eco-friendly, inexpensive, and large-scale preparation. These supramolecular adhesives have great potential in the biomedicines, bioelectronics, and building industries.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2021
·
IF 9.297
Xinhua Liu,Wanni Wang,Xuechuan Wang,Siwei Sun,Chao Wei
Comprehensive promotion of chrome-free organic tanning system has become an inevitable trend for cleaner production in leather manufacturing industry. However, the imbalance of interface charge between conventional anionic wet finishing material and organic tanned leather leads to poor quality of finished leather. Herein, a novel amphoteric polymer P (AA-AM-C 12 DM) as retanning and fatliquoring dual-functional wet finishing material was prepared by free radical polymerization using acrylic acid (AA), acrylamide (AM), and (2-methacryloyloxyethyl) dodecyl ammonium bromide (C 12 DM) as raw materials in an aqueous system and further applied in TWS organic tanned leather. Comprehensive structural and performance characterization of P (AA-AM-C 12 DM) confirmed the presence of amphoteric groups and hydrophobic long chains in its structure. Number average molecular weight and isoelectric point were determined to be 6396 g mol −1 and 5.16, respectively. The physical and mechanical properties, morphology of the P (AA-AM-C 12 DM)-treated leather, and their reactivities to anionic dye were investigated. The effect of hydrogen bond and ionic bond , which resulted from reactions between the carboxyl groups , amide groups, cation N + in P (AA-AM-C 12 DM), and the pendant amino groups, hydroxyl groups, carboxyl groups from collagen fibers, benefitted in enhancing the physical and mechanical properties of crust leather and their reactivity to anionic dye. Moreover, P (AA-AM-C 12 DM) showed remarkable environmental benefits compared to the commercial fatliquor, by significantly promoting dye absorption as high as 96.57%. These findings provide a potential application of P (AA-AM-C 12 DM) to coordinate well with an ecological chrome-free organic tanning system, significantly promoting the cleaner production in the leather industry.
研究领域:
材料科学
·
环境科学
·
皮革化学与工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2021
·
IF 4.089
Shui Yu,Hongli Zuo,Xiaowei Xu,Nanying Ning,Bing Yu,Liqun Zhang,Ming Tian
The construction of silicone elastomers with mechanical strength and a self-healing property can be verified as an effective method by multiple dynamic bond strategies. However, it means that some complex synthesis strategies or small molecules with specific chemical structures are required. So, it is more challenging to construct a kind of polymer matrix with two kinds of interactions by matured methods directly. Herein, we report a dynamic silicone elastomer with two kinds of interactions that was prepared by incorporating a “carboxyl-amino ionic bond” and “carboxyl-Al3+ coordinated ionic bond”. The carboxyl groups are bonded with amino groups and Al3+ ions to form common ionic bonds and coordinated ionic bonds, respectively. The coexistence of these strong and weak ionic synergistic interactions was verified by setting several experiments in spectroscopic analysis and mechanical tests. It was indicated that the carboxyl-Al3+ interactions can improve the mechanical property of this material effectively, while the dense common ionic network between carboxyl and amino groups can maintain the integrity of the dynamic cross-linking network, which may ensure the good recoverability and self-healable ability of the silicone elastomer. Compared with the control samples based on single ionic bonds, the hybrid network exhibited the better mechanical property with an optimistic tensile strength of ∼0.73 MPa and elongation at breaking of ∼548%, and the network also exhibited a good autonomous self-healing ability at a higher temperature (8 h, 80–136% at 60 °C) and a considerable recoverability at a large scale of stretching (∼70% of elongation at break) with a moderate low hysteresis ratio of only 28.7%. We expect this strategy would be beneficial for the expansion of a convenient way of mixing to prepare elastomers with a synchronous mechanical property and self-healing performance by multiple dynamic bond strategies.
研究领域:
材料科学
·
高分子化学
✓ 已验证
DOI
高影响因子
POLYMER
·
2018
·
IF 3.483
Xinxin Xia,Zijin Wu,Wanjie Wang,Yonggang Shangguan,Qiang Zheng
It is a challenge to develop advanced elastomers with a combination of high strength , stiffness and toughness by a relatively convenient and environmentally friendly approach. Herein, we reported a facile and environmentally friendly method to prepare hybrid crosslinked nitrile butadiene rubber (NBR) comprised of covalent and ionic bonds , and this hybrid crosslinked rubber possesses comprehensively improved mechanical properties , higher crosslinking density, deformation recovery and shape memory ability. The hybrid crosslinked NBR was prepared by incorporating 2-acrylamido-2-methyl propane sulfonic acid (AMPS) and zinc oxide (ZnO) into NBR via internal milling together with dicumyl peroxide (DCP), and then vulcanization , which is a very simple and environmentally friendly method without extra procedure or treatment. The hybrid crosslinked network in NBR has randomly distributed covalent and ionic bond crosslinks, the strong covalent bonds serve as permanent crosslinks, imparting the elasticity, whereas the weak ionic bonds reversibly rupture and reform, dissipating the energy. Because of the restricting effect of ionic bonds on segmental movement, the hybrid crosslinked NBR shows higher glass transition temperature , lower loss factor peak value and longer relaxation time. By tuning the ionic bond strength via temperature, a much smaller range of linear viscoelastic region is observed for hybrid crosslinked NBR with high content of AMPS and ZnO at a relatively higher temperature, which endows the sample with shape memory ability. This design principle of incorporating ionic bonds to strengthen vulcanized NBR should be applicable to other diene rubber materials.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2022
·
IF 10.319
Huimeng Feng,Wei Wang,Tong Wang,Lei Zhang,Wen Li,Jue Hou,Shougang Chen
Photo-induced self-healing composites have attracted more and more attention as a kind of materials that can be controlled remotely and accurately in real time. Here, we report a strategy of a photo-responsive system based on hydrogen and ion bonds capable of performing self-healing process by ultraviolet wavelengths, which is covalently cross-linked zinc-dimethylglyoxime-polyurethane coordination network with triple dynamic bonds. The recombination of hydrogen bond and metal coordination bond produces effective healing performance. The self-healing behavior and temperature dependence of 3D micro-crack is investigated by molecular dynamics simulations to reveal the mechanism of self-healing at molecular level. Moreover, the hybrid of copper-doped zinc oxide not only provides metal coordination bonds to enhance the self-healing rate, but also enhances the photothermal effect and anti-bacterial properties of polyurethane. Importantly, doping of copper generates more defects and forms a space charge layer on the surface of zinc oxide. The defects could trap surface electrons and holes, preventing the recombination of photo-induced electron-hole pairs, generating more heat through lattice vibration. Therefore, under ultraviolet light irradiation, the polyurethane can reach 62.7 °C for 60 s, and the scratches of the polyurethane can be healed within 30 min and fully healed within 1 h.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
AIP Advances
·
2023
·Vol. 13
·期 9
·
IF 1.6
Yang Zhi,Xiao Ya
Conductive hydrogel, as a promising candidate material, is ideal for multifunctional strain sensors due to its similarity to biological tissues. It offers good wearability and high-precision information acquisition. However, fabricating conductive hydrogel-based strain sensors with both superior mechanical and conductive properties remains challenging. In this study, a compressive and conductive strain sensor based on multi-dynamic interactions is fabricated through a simple strategy. The strategy exploits hydrogen bonding and ionic ligand bonding by using nanocellulose reinforced poly(acrylic acid) hydrogels impregnated with the Fe 3+ solution to prepare a double-network hydrogel. The prepared PAA/CNF–Fe 3+ double-network hydrogel exhibited excellent properties, including extraordinary performance compressive stress (2.96 MPa) and remarkable electrical conductivity (6.34 S/m). With these advantages, the PAA/CNF–Fe 3+ double network hydrogel was developed to be an attractive strain flexible sensor with cyclic stability (150 cycles) and good strain sensitivity (GF = 2.87). In addition, the PAA/CNF–Fe 3+ hydrogel flexible sensor can be used as an electronic skin to accurately discriminate subtle and large body movements. Given the simple strategy, double network structure, and satisfactory functionality, the PAA/CNF–Fe 3+ hydrogel provides a new sustainable and multifunctional development strategy that can be applied in the field of strain sensors and medical detection.
研究领域:
材料科学
·
生物医学工程
·
传感技术
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 115
·114532-114540
·
IF 3.289
Ling Wang,Haihuan Wang,Haichao Yu,Feng Luo,Jiehua Li,Hong Tan
Two types of polyampholyte (PA) hydrogels are successfully synthesized by a facile one-step random copolymerization method using an ammonium peroxydisulfate (APS)/aliphatic amine [N,N,N′,N′-tetramethylenediamine (TEMED)] redox system. Two cationic monomers, differing only slightly by the presence of a methyl group, [2-(methacryloyloxy)ethyl]trimethylammonium chloride (MATAC) and acryloyloxethyltrimethylammonium chloride (DMAEA-Q), are used to fabricate two hydrogels with the same anionic monomer. The obtained hydrogels show large differences in their mechanical properties. The G-M hydrogels containing MATAC are much stiffer and stronger than the G-D hydrogels containing DMAEA-Q. Particularly, the G-D gels are super stretchable, with a fracture strain of 12 600%, a work of extension at fracture of 27.8 MJ m−3, and a stress of 0.5 MPa. The mechanical properties of these hydrogels are comparable to, or even better than, those of the hydrogels prepared under stricter conditions via UV polymerization. The very slight steric bulk of the methyl group exhibits significant effects not only on the strength and distribution of the ionic bonds, but also on the microstructures of the G-M and G-D hydrogels. Although G-M contains more hydrophobic methyl groups, its water content and surficial hydrophilicity are higher than those of G-D. Moreover, the polymer network of G-M stacks more homogenously and stereoscopically with stronger interactions. The results obtained in this study will increase the understanding of structures and properties of tough hydrogels.
研究领域:
材料科学
·
高分子化学
✓ 已验证
DOI
高影响因子
Advanced Healthcare Materials
·
2025
·
IF 9.6
Pengcheng Zhang,Chuan Yu,Zhuofan Hu,Yijin Li,Guangming Wan,Keyong Tang,Xialian Fan
Self-expanding hemostatic sponge plays an important role in the control of non-compressible hemorrhage in deep wound. After hemostasis is accomplished, the sponge adheres to the wound via blood clots, posing a considerable challenge in wound debridement. A kind of protocatechualdehyde modified chitosan/sodium alginate composite hemostatic sponge with on-demand removal performance is designed in this study. After absorbing blood, the compression sponge rapidly expands and compresses the damaged blood vessels. The physical compression of the hemostatic sponge and the chemical adhesion of catechol is used to promote rapid hemostasis of the wound. The composite hemostatic sponge demonstrated outstanding hemostasis performance in both mouse liver and rat femoral artery bleeding model. Notably, after complete hemostasis of the rat femoral artery, the composite sponge is rapidly removed from the wound by rinsing it with a suitable concentration of Sodium carbonate (Na 2 CO 3 ) solution. This composite hemostatic sponge featuring the on-demand removal capability demonstrates outstanding application potential for non-compressible hemorrhage in deep wounds and provides a novel way for constructing removable hemostatic sponges.
研究领域:
生物医学工程
·
材料科学
·
创伤急救
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）