CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Binglin Zhou,Jie Zou,Zewan Lin,Zhanhong Yuan,Xingzhen Qin,Pan Chen,Dongdong Ye
The growing interest in biomass-based nanofluids has revealed flaws in large-scale manufacturing, customizable aligned nanostructures, and the weak interaction of structural components, resulting in low ionic conductivity, unsatisfactory long-term reliability underwater, and insufficient energy conversion efficiency. Herein, we present a bottom-up strategy integrating cellulose dissolution, orientation, regeneration, and densification to construct regenerated cellulose-based nanofluidic fibers (RCNFs) comprising a high weight content of acidified carbon nanotubes (40 %), aligned nanochannels (3–4 nm), and negatively charged surfaces (–3.05 mC m −2 ). Benefited from the synergistic alignment and spatial confinement of CNTs by the cross-linked cellulose network, the RCNFs realized a high underwater strength (29 MPa), unprecedentedly high ionic conductivity (0.07 S cm −1 ) at low salt concentrations (<0.001 M), and high long-term output power density (2.57 W m −2 over 43 days) in an artificial river water–seawater system. In a proof-of-concept experiment, customizable RCNF-based devices connected in series powered a calculator and LED lights at a 50-fold concentration gradient. This work can promote the application of regenerated cellulose in high-performance osmotic energy conversion systems.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Tianxiang Jin,Qingyun Luo,Hongchao Yu,Bin Huang,Zhirong Liu,Yong Qian
A novel porous xerogel of phytic acid (PA)-modified polyvinyl alcohol (PVA) was fabricated via a straightforward condensation reaction between PVA, urea, and PA. Besides serving as crosslinking agents, urea and PA also act as the pore forming agents and adsorptive functional groups of this xerogel , respectively. The decomposition and gasification of urea during synthesis formed an interconnected porous structure, dramatically raising the content of PA groups in the material as well as expose more adsorptive groups on its surface. This resultant structural characteristic allows the material to display outstanding adsorption capacity and rapid adsorption rate. Furthermore, the utilization of a compound crosslinker (urea/PA) can provide PVA with a sturdier crosslinking structure compared to the use of the two agents separately. As a result, the material shows excellent reusability, and its adsorption capacity can reach up to 89% of its initial adsorption capacity after five adsorption–desorption cycles. Density function theory (DFT) calculations demonstrated that there is a strong interaction between PA and uranium ions, conferring the material an impressive selectivity for uranium. This work could broaden insights into the tailored design and synthesis of polymer materials for the extraction of uranium.
✓ 已验证
产品关联
DOI
高影响因子
BIOCHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 3.9
Qianjun Long,Yunxia Zhang,Qiang Zhang,Kaibo Xu,Liqin Cao,Li Zhang
The design of multifunctional hydrogel sensor materials with comprehensive properties such as frost resistance, good reusability, adhesion, and flexibility needs to be developed to meet the demands of complex environments. Herein, a conductive, semi-interpenetrating network hydrogel was constructed from poly (vinyl alcohol), polyaniline (PANI), and poly (dimethyl diallyl ammonium chloride) (PDDA), and the process assisted by the Hofmeister effect. A double conductive pathway hydrogel with types of PDDA and PANI polymers was formed simultaneously to provide excellent conductivity (1.217 S/m −1 ) for the hydrogel. With the increase in the concentration of PDDA from 0 to 16 wt%, the mechanical strength increased from 0.066 MPa to 0.34 MPa, and the modulus of elasticity and toughness increased by 684.9% and 748.8%, respectively. The hydrogel can be efficiently generated as a strain sensor material with excellent sensitivities of GF = 2.337 and S = 3.229%/KPa under tension and compression, respectively. The hydrogel could be used as an electronic skin and be used for the monitoring of even small strains in the skin caused by pulse beats. In addition, the hydrogel has excellent temperature sensitivity (1.575%/℃), frost resistance (−53.45 ℃), self-healing capability, and reusability. Data Availability Data will be made available on request.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Han Wang,Lu Chen,Shuang Wu,Weiping Jin,Wangyang Shen,Zhongze Hu,Wenjing Huang,Gang Liu
Rice bran oil bodies (RBOBs) are one of the most exploited functional components from rice bran by-products and are predominantly based on oleosin stabilization. In this study, we explored the effects of different concentrations of added (-)-epicatechin, ferulic acid, and phytic acid on the RBOBs stability. The results revealed that the incorporation of all three natural phytoconstituents could reduce the RBOBs particle size and increase emulsifying properties, demonstrating increasing surface hydrophobicity (p < 0.05), and a good antioxidant effect, which was especially obvious with (-)-epicatechin incorporation. Fourier transform infrared (FT-IR) spectroscopy data demonstrated that these three small molecule substance classes can modify with oleosin on RBOBs surface by covalent and noncovalent effects. Raman spectroscopic analysis illustrated that the vibrational modes of disulphide bonds in oleosin were modified by these three plant natural ingredients. The interactions between the three phytoconstituents and the model protein were investigated by molecular docking experiments.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2022
·
IF 4.331
Yuntong Ge,Wei Wang,Kai Li,Fan Xiao,Zhipeng Yu,Jing Gong,Hang Jin,Ang Li
Crude oil adhesion issues are widespread in the petroleum industry, leading to inefficient production and high maintenance costs. Developing efficient antifouling materials and investigating the microscopic adhesion mechanism are of substantial significance. In the present work, a superhydrophilic/underwater superoleophobic PAFC coating with excellent antifouling properties was constructed by the coordination-driven self-assembly of phytic acid (PA) and FeCl3 (FC). The atomic force microscope (AFM) droplet probe technique was employed to elucidate the underlying mechanism of the anti-oil-adhesion property of the PAFC coating. Results showed that the PAFC modification achieved the optimum effect at a molar ratio of 1:3 between PA and FeIII. Applying a (3-aminopropyl)triethoxysilane (APTES) interlayer can effectively improve the performance of the PAFC coating on silica substrates. AFM droplet probe experiments indicated that the adhesion force between submerged micrometer-sized oil droplets and PAFC-modified substrates was significantly weaker than that with the untreated substrate. Meanwhile, the adhesion forces between oil droplets and surfaces were inversely proportional to the contact angle of the oil in water and were enhanced by higher salinity, lower collision velocity, and stronger loading force. The oil injection and wall sticking tests also confirmed the effectiveness of the PAFC modification in resisting the adhesion of crude oil.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2022
·
IF 4.855
Wanglong Zhang,Yu Dai,Fan Xia,Xiaojin Zhang
Hydrogel adhesion is fundamental to a large number of established and emerging fields. The existing adhesion methods have some problems, such as the limited penetration ability of polymers in hydrogels, the interface hardening caused by in situ monomer polymerization, the secondary damage caused by covalent strong bonding during detachment, the need for complementary techniques to induce adhesion, and the complex and impractical operation. Inspired by the adhesion mechanism of mussels, we propose a universal strategy of interfacial molecular lock (IML) for hydrogel adhesion, which is simple to operate. IML is composed of organic (low-molecular-weight) molecules containing catechol groups, which are easy to penetrate into hydrogels. The principle of IML relies on the combination of a dynamic covalent bond, coordination bond, hydrogen bond, π–π interaction, and cation-π interaction. IML can adapt to interfacial chemistry of hydrogels on different substrates and achieve reversible adhesion without external regulation. The molecular micro-polymerization further enhances the stability and strength of hydrogel adhesion. IML is expected to expand hydrogel adhesion in various applications, especially tissue adhesives, wound sealants, wearable devices, and hydrogel-on-metal protection.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF DAIRY SCIENCE
·
2023
·
IF 3.5
Pin Chen,Ru-Meng Wang,Bao-Cai Xu,Fei-Ran Xu,Ying-Wang Ye,Bao Zhang
ABSTRACT Green hydrophobically modified butyrylated dextrin (BD) was used to modulate casein (CN). The CN/BD complex nanoparticles were formed at different CN-to-BD mass ratios based on a pH-driven technology. The interaction force, stability, and emulsifying properties of complex nanoparticles were investigated. The nanoparticles had a negative charge and a small particle size (160.03, 152.6, 155.9, 206.13, and 231.67 nm) as well as excellent thermal stability and environmental stability (pH 4.5, 5.5, 6.6, 7.5, 8.5, and 9.5; ionic strength, 50, 100, 200, and 500 m M ). Transmission electron microscopy demonstrated the successful preparation of complex nanoparticles and their spherical shape. Fourier transform infrared spectroscopy, fluorescence spectroscopy, and dissociation analysis results showed that the main driving forces of formed CN/BD nanoparticles were hydrogen bonding and hydrophobic interaction. Furthermore, the CN/BD nanoparticles (CN/BD mass ratio, 1:1; weight/weight) exhibited the lowest creaming index, and optical microscopy showed that it has the most evenly dispersed droplets after 7 d of storage, which indicates that the CN/BD nanoparticles had excellent emulsifying properties. Butyrylated dextrin forms complex nanoparticles with CN through hydrogen bonding and hydrophobic interaction to endow CN with superior properties. The results showed that it is possible to use pH-driven technology to form protein–polysaccharide complex nanoparticles, which provides some information on the development of novel food emulsifiers based on protein–polysaccharide nanoparticles. The study provided significant information on the improvement of CN properties and the development of emulsions based on CN.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Hui Peng,Xin Wang,Zhiyuan Liu,Haikuo Lei,Shuzhen Cui,Xuan Xie,Yangfei Hu,Guofu Ma
Zn ion capacitors (ZICs) composed of a carbon-based cathode and a Zn anode are one of the most promising energy storage devices due to their inherent safety and high-power output. However, their poor cycling stability originating from the Zn dendrites’ formation and low energy density limited by insufficient activated carbon properties remain major challenges for development of high-performance ZICs. Hence, we constructed a facile and effective strategy to alleviate “edge effects” and suppress Zn dendrites by growing ZnO nanowire arrays on Zn foil (ZnO@Zn) using a horizontally potentiostatic anodizing technique. The electrochemical characterizations and in situ optical microscopy observation revealed that the introduction of ZnO nanowire arrays can significantly suppress the growth of Zn dendrites and enhance the cycling stability of the Zn anode. The superfine and interlaced ZnO nanowire arrays provide uniform nucleation sites and high electrical conductivity for the Zn metal anode, reducing the local current density and promoting the rapid diffusion and migration of Zn ions on the Zn anode surface. As a result, the ZnO@Zn electrode has a very low nucleation overpotential and excellent cycle stability, far superior to the bare Zn anode. Furthermore, a ZnO@Zn//NPHC ZIC assembled with an N, P-codoped hard carbon (NPHC) cathode delivers a high specific capacity of 110.3 mAh g–1 at 0.1 A g–1 and achieves outstanding cycling stability with 90% capacity retention together with ∼100% Coulombic efficiency after 20000 cycles.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Gang Qin,Yongcun Liu,Wenye Zhang,Wenjie He,Xiaoxiang Su,Qianqian Lv,Xiang Yu,Qiang Chen,Jia Yang
Flexible supercapacitors have attracted more and more attention because of their promising applications in wearable electronics, however, it is still important to harmonize their mechanical and electrochemical properties for practical applications. In the present work, a seamless transition between polyaniline (PANI) electrode and NH 4 VO 3 _FeSO 4 dual redox-mediated gel polymer electrolyte (GPE) is presented through in situ formation of gradient interface structure. Multiple physical interactions make the GPE excellent mechanical and self-healing properties. Meanwhile, double role functions of Fe 2+ ions greatly relieve the traditional contradiction between mechanical and electrochemical properties of GPE . Moreover, benefiting from the structure and reversible redox reactions of VO 3- and Fe 2+ , the integrated supercapacitor delivers an exceptional specific capacitance of 441.8 mF/cm 2 , a high energy density of 63.1 μWh/cm 2 , remarkable cyclic stability. Simultaneously, the gradient structure from PANI electrode to GPE greatly improves the electrode/electrolyte interface compatibility and ion transport, which endows the supercapacitor with stable electrochemical performance. Furthermore, the supercapacitor well-maintains the specific capacitance even at −20 °C with over 89.19 % retention after 6 cutting/healing cycles. The gradient interface structure design will promote the development of high-performance supercapacitor.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENERGY
·
2022
·
IF 8.857
Hanbing Duan,Wenye Zhang,Zhongyuan Guo,Xiaoxiang Su,Yongcun Liu,Hao Meng,Xiang Yu,Gang Qin,Qiang Chen,Jia Yang
Flexible supercapacitor has been proved a promising candidate for wearable electronics due to its high power density, fast charge/discharge rates and long life cycle. Gel polymer electrolyte (GPE), an important component of supercapacitor, combines high ionic conductivity of liquid electrolyte and great safety of solid electrolyte. To satisfy the practical application of wearable flexible devices, the GPE should possess outstanding mechanical properties. Herein, a fully physical cross-linked polyacrylamide/κ-carrageenan double network GPE is prepared, in which κ-carrageenan with double-helix structure is used as the first network and polyacrylamide acts as the second network. The double network GPE shows outstanding mechanical properties, including high tensile strength (0.33 MPa), elongation (1143%) and preeminent self-recovery performance. Moreover, owing to thermoreversible characteristic of κ-carrageenan and reversible hydrogen bonds, the GPE exhibits excellent self-healing performance. Furtherly, an integrated supercapacitor is fabricated by in-situ growing polyaniline on the GPE surface. Different from conventional sandwich-like structure of supercapacitor, this seamless connection between electrode and electrolyte layers can significantly lower interfacial resistance , and avoid displacement and separation under deformations. Meanwhile, this supercapacitor also demonstrates splendid self-healing performance and high adaptability during harsh conditions. This flexible self-healing supercapacitor with superior security has broad application prospects in portable and wearable electronics.
✓ 已验证
产品关联
DOI
高影响因子
Energy Technology
·
2023
·Vol. 11
·期 6
·2201358
·
IF 3.8
Ganghong Zhang,Xiaotian Wu,Tianlong Du,Yu Wang,Zhengying Liu,Wei Yang,Mingbo Yang
The challenge to prepare conductive hydrogel electrodes for stretchable supercapacitors with high areal capacitance and excellent stability during stretching has attracted tremendous attention from researchers. Herein, a method to enhance the performance of a conductive hydrogel electrode is reported. The in situ oxidative polymerization of aniline monomer is performed in the prestretched polyacrylamide (PAAm) hydrogel. After releasing the hydrogel, the polyaniline (PANI) nanoparticles can shrink with the PAAm substrate to form a dense and continuous conductive network. Due to the enhanced conductive networks, the prestretched PAAm-PANI conductive hydrogel with prestrain of 500% (PPCH 5 ) electrode shows high areal capacitance of 509.9 mF cm −2 at 0.5 mA cm −2 . The symmetrical stretchable supercapacitor based on PPCH 5 electrodes exhibits a high areal capacitance of 219.7 mF cm −2 . The device shows high capacitance retention of 68.5% even when stretched to 200% strain and noncapacitance decays after 2000 stretching cycles at 100% strain. This strategy can be expanded to the carbon nanotubes (CNT)-filled hydrogel systems. The PAAm-PANI-CNT conductive hydrogel with prestrain of 500%-based supercapacitor shows specific capacitance of 1429.87 mF cm −2 . The results demonstrate that prestretching is a highly effective method to enhance capacitance and stretching stability of PANI hydrogel electrode for stretchable supercapacitors.
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
·
2022
·Vol. 30
·期 2
·1087-1102
·
IF 6.123
Li Chunyu,Hou Zehua,Li Pan,Zhang Guomin,Bai Liangjiu,Wang Wenxiang,Chen Hou,Yang Huawei,Yang Lixia
Cellulose nanocrystals (CNCs) have been widely used in the surface modification and construction of nanocomposites due to their excellent surface activity and high tensile strength. In this manuscript, nanocomposite hydrogels were prepared by implanting poly(glycidyl methacrylate)-modified CNCs (CNCs@PGMA) and biomass phytic acid (PA). After extracting CNCs from microcrystalline cellulose, PGMA was successfully grafted on the surface of CNCs by surface-initiated Activator Generated by Electron Transfer Atom Transfer Radical Polymerization (SI-AGET ATRP). With the assistance of PA, the reversible hydrogen bonding interaction between the internal structures of the matrix was promoted to construct the CNCs@PGMA/PA self-healing nanocomposite hydrogels. The obtained hydrogels by using CNCs@PGMA and PA as additives have excellent mechanical properties (tensile strength of 1.39 MPa) and self-healing ability (91.4% after 6 h). This study develops a facile method for the preparation of nanocomposite hydrogels with excellent self-healing properties. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）