ChemistrySelect
·
2024
·Vol. 9
·期 28
·e202304818
·
IF 1.9
Lihong Gao,Xinpeng Zhao,Qingbo Zhou,Huaying Li,Haibin Yu
Graphical This paper prepares expanded rice straw through a single-screw steam explosion method, and then uses the expanded rice straw to prepare corrugated base paper, and explores the effects of carboxymethyl cellulose, hydroxypropyl methylcellulose, and cellulose nanofibers on the mechanical properties of corrugated base paper. Corrugated base paper under optimal conditions is selected for SEM, DSC, TG, FTIR, and other characterizations. This study aims to comprehensively examine the influence of three distinct additives, namely carboxymethyl cellulose (CMC), hydroxypropyl methylcellulose (HPMC), and cellulose nanofibers (CNF), on the performance enhancement of corrugated base paper. For this purpose, steam-exploded rice straw was treated with varying concentrations (2, 4, 6, 8, and 10 wt%) of CMC, HPMC and CNF. Analysis of the rice straw pre and post expansion, as well as the modified corrugated base paper, was conducted using Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TG), tensile performance testing, and scanning electron microscopy (SEM). Results indicated that adding CMC, CNF, and HPMC to corrugated base paper significantly improved bonding between paper layers, particularly at 2 %, 6 %, and 8 % concentrations, respectively. This enhancement notably increased tensile strength and elastic modulus of the corrugated base paper. Tensile performance saw increases of 57.76 %, 59.01 %, and 60.25 %, while elastic modulus showed increments of 52.7 %, 9.4 %, and 136.69 %, respectively. These findings provide valuable insights for the preparation of corrugated base paper and highlight the potential of CMC, HPMC, and CNF in enhancing paper mechanical properties.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Haoming Sun,Zhaorui Zhang,Xiaojing Tian,Manli Lu,Bo Wang,Pinhua Zhang,Guangliang Cui,Lulu Du,Kaifeng Xue
Developing a gas sensor for the expedient, rapid, and accurate detection of hydrogen sulfide (H 2 S) in human exhaled breath at room temperature would offer an opportunity for home-style self-monitoring of some chronic diseases. In this work, Cu 2 O-carbon nanofiber (CNF) heterojunctions were prepared by a two-dimensional (2D) electrodeposition in-situ assembly method to detect low-concentration H 2 S gas at room temperature. The heterojunction had a distinct interface, which was confirmed by scanning electron microscopy, transmission electron microscopy and voltammetry tests. The detection limit of the sensor was as low as 5 ppb, and the sensors could directly distinguish the exhaled breath of healthy individuals and simulated patients. We attributed the excellent performances to synergistic effects of the modulation of the heterointerface barrier and the sulfide reaction of Cu 2 O. Furthermore, the adsorption behaviors of H 2 S on the surfaces of pure Cu 2 O and the Cu 2 O-CNF heterojunction were evaluated using the density functional theory (DFT) based on first principles. The results further confirmed that the formation of the heterostructure enhances the H 2 S adsorption capacity and electron transfer of the sensitive material. This study is of great significance for the diagnosis and monitoring of diseases with the exhaled H 2 S biomarker.
研究领域:
材料科学
·
医学诊断
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2019
·Vol. 9
·期 7
·1051
·
IF 4.034
Xiu Wang,Zhihuai Yu,Liang Jiao,Huiyang Bian,Weisheng Yang,Weibing Wu,Huining Xiao,Hongqi Dai
Hexagonal boron nitride (h-BN)-based heat-spreading materials have drawn considerable attention in electronic diaphragm and packaging fields because of their high thermal conductivity and desired electrical insulation properties. However, the traditional approach to fabricate thermally conductive composites usually suffers from low thermal conductivity, and cannot meet the requirement of thermal management. In this work, novel h-BN/cellulose-nano fiber (CNF) composite films with excellent thermal conductivity in through plane and electrical insulation properties are fabricated via an innovative process, i.e., the perfusion of h-BN into porous three dimensional (3D) CNF aerogel skeleton to form the h-BN thermally conductive pathways by filling the CNF aerogel voids. When at an h-BN loading of 9.51 vol %, the thermal conductivity of h-BN/CNF aerogel perfusion composite film is 1.488 W·m−1·K−1at through plane, an increase by 260.3%. The volume resistivity is 3.83 × 1014Ω·cm, superior to that of synthetic polymer materials (about 109~1013Ω·cm). Therefore, the resulting h-BN/CNF film is very promising to replace the traditional synthetic polymer materials for a broad spectrum of applications, including the field of electronics.Keywords:CNF aerogel;perfusion;h-BN;thermal conductivity;electrical insulation
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Sustainable Energy & Fuels
·
2021
·Vol. 6
·期 2
·299-308
·
IF 6.367
Zhe Sun,Mehraj Ahmad,Zongxia Gao,Zhu Shan,Liangmao Xu,Sha Wang,Yongcan Jin
Controllable ion transport in nanofluidic membranes is highly desirable for industrial applications, including energy harvesting, molecular separation, and nanofiltration. However, the nanofluidic materials synthesized using the traditional approach still suffer from complex preparation, insufficient charge density, and poor aqueous stability. Herein, we describe a mechanically robust nanofluidic membrane coupled with highly charged lamellar nanochannels, which is formed through the sequential bridging and alignment of MXene nanosheets and TEMPO-oxidized cellulose nanofibers (MXene/CNF). The ion conductivity of the MXene/CNF membrane reached up to 4 × 10−3 S cm−1 at a low KCl concentration, while its tensile strength was as high as 171.2 MPa. The MXene/CNF membrane also showed prominent aqueous stability and maintained its high ion conductivity over a period of 10 days. Moreover, an osmotic energy generator based on the MXene/CNF membrane yielded the maximum output power density of 0.15 W m−2 at 1000-fold concentration gradient. The results demonstrated that the MXene/CNF-based nanofluidic membrane can be effectively utilized in the development of high-performance osmotic energy conversion devices.
研究领域:
材料科学
·
能源技术
·
纳米科技
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2025
·Vol. 21
·期 40
·e07925
·
IF 12.1
Jiao Liu,Shuhan Xu,Xukang Han,Mingliang Ma,Xiyao Wang,Wenjuan Ren,Jinhu Hu,Haoyan Duan,Ye-Tang Pan
Effective mitigation of electromagnetic microwave (EMW) pollution requires the development of lightweight, broadband, and high-performance microwave absorbing materials. In this work, a novel Fe 3 SnC/Sn/CNF composite is synthesized via a combination of hydrothermal synthesis, electrospinning, and high-temperature carbonization. The optimal sample (FSC3) achieved a minimum reflection loss ( RL min ) of −28.33 dB and an effective absorption bandwidth ( EAB ) of 6.40 GHz at a thickness of 2.50 mm. To enhance environmental durability and broaden application potential, FSC3 is incorporated into a polyurea (PUA) matrix to fabricate a composite coating. The resulting material exhibited significantly improved microwave absorption, with an RL min of −65.78 dB and an EAB of 6.68 GHz at only 2.17 mm thickness. This enhancement is attributed to increased interfacial and dipolar polarization, as well as improved impedance matching due to the synergy between the filler and the elastomer matrix. Computer Simulation Technology (CST) simulations confirmed excellent Radar Cross Section (RCS) reduction performance, validating its stealth potential. Furthermore, the composite coating displayed enhanced mechanical strength and a hydrophilic surface, broadening its application prospects in harsh environments. This work presents a scalable and versatile strategy for designing multifunctional microwave absorbing coatings with outstanding performance.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2020
·Vol. 22
·期 9
·1-11
·
IF 2.132
Lin Jiaxin,Mei Qianwen,Duan Yingchun,Yu Chenhong,Ding Yaping,Li Li
The sensitive determination of VB 2 has broad analytical applications. In this work, a novel VB 2 electrochemical sensor based on the hydrothermal method was constructed to uniformly grow molybdenum disulfide and silver nanoparticles on the surface of electrospun carbon fiber. MoS 2 -Ag-CNF was characterized by scanning electron microscope, EDS spectrum, TEM analysis, cyclic voltammetry, differential pulse voltammetry, and electrochemical impedance spectroscopy. The sensor exhibited a high sensitivity of 0.05 to 40 μΜ with a fast response time and a low detection limit of 0.02 μM. The electrode also showed outstanding selectivity toward various interferences. These results indicate that the MoS 2 -Ag-CNF nanocomposites may be promising electrode materials for electrochemical biosensing.
Graphical abstract
研究领域:
分析化学
·
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
Lizhen Guo,Yuqi Wang,Meng Wang,Hiba Shaghaleh,Yousef Alhaj Hamoud,Xu Xu,He Liu
With the severe shortage of water resources and the low utilization efficiency of fertilizer, slow-release fertilizer equipped with water-absorbing and water-retaining capacity has captured much attention. Herein, by integrating metal-organic frameworks (MOFs) with cellulose nanofibres (CNFs) and sodium alginate (SA), a novel cellulose-based hydrogel (MIL-100(Fe)@CNF-SA) was fabricated that acted as a carrier for urea. The resultant hydrogel was not only qualified with a high surface area of 129.17 m 2 /g but also affluent in the hydrophilic groups . In parallel with the good water-holding capacity of 55% when the loading of the resultant hydrogel was only 0.5 g, the complete loss of the water in the treated soil was successfully slowed down by nearly 20 d compared with the soil without treatment. Urea (1.47 g/g) could be captured in the composite hydrogel , wherein the slow release of urea was achieved due to the synergism of the highly porous structure of the hydrogel and the crystals with a high specific surface area. Moreover, the positive effect of the resultant hydrogel on the growth of wheat was indexed to the germination rate, number of tillers, photosynthetic rate and chlorophyll content of the crop, which verified their further application in irrigating farming.
研究领域:
材料科学
·
农业科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Jinyao Yu,Mengtao Hu,Yuxi Wang,Hongxia Wang,Hai Chen,Yuhao Zhang,Hongjie Dai
Pickering stabilizers are usually used in high concentration, especially for polysaccharide particles with relatively poor surface activity, such as nanocellulose. This study investigated the preparation and properties of Pickering emulsions co-stabilized by a low concentration complex system based on the carboxylated cellulose nanofibril (CNF, 0.2 %) and gelatin (G, 0.02 %–0.10 %). As gelatin concentration gradually increased, the turbidity of CNF/G complex increased while the zeta potential slightly decreased due to electrostatic interaction. Especially, introducing gelatin facilitated the formation of a flocculation network structure of the CNF/G complex due to hydrogen bonding and electrostatic adsorption. Introducing low-concentration gelatin solved the issue that low-concentration CNF could not stabilize the emulsion. At low gelatin concentration ranges (0.06 %–0.10 %), CNF/G stabilized emulsions displayed good stability (i.e., storage, pH, ionic strength and centrifugation stabilities), and the rheological properties of emulsions improved as well. The interface adsorption and network structure of CNF/G stabilized Pickering emulsions can be effectively regulated by low-concentration gelatin as assisted role. The present study develops a stable emulsion stabilized by low-concentration polysaccharide/protein complex system.
研究领域:
胶体与界面科学
·
食品科学
·
材料科学
·
高分子科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2023
·
IF 5
Boyuan Chen,Hui Zhang,Lijuan Li,Yingcheng Hu
Nano-cellulose aerogels have low densities, high porosities, and strong absorption capacities, making them suitable for cleaning up oil and chemical spills in oceans. However, their weak lipophilicity and poor mechanical properties often limit their applications. We attempted to introduce long-chain polymers on the nanocellulose/polyvinyl alcohol (CNF/PVA) surface for the hydrophobic modification of aerogels. In this paper, PVA/CNF was silylated by introducing hydrolyzed ethyltrimethoxysilane to increase its hydrophobicity. Aerogels with interpenetrating pore structures were prepared by a directional freezing method. The aerogels had a high strength in the freezing direction and high compressive elasticity in the direction perpendicular to the freezing direction. Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, thermogravimetric analysis, and water contact angle (148°) tests demonstrated the successful silylation of the aerogel surface. The aerogel absorbed oil and some organic solvents 50–110 times higher than its own weight. It showed good reusability, with an absorption loss rate of 20% after 40 squeezing cycles. This green and sustainable method is inexpensive and has a short production cycle. In addition, the absorption of alcohols and lipids by aerogels can be used as a carrier for surgical drugs.
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
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Yongxin Qian,Yang Tao,Wang Li,You Li,Tian Xu,Jinian Hao,Qinghui Jiang,Yubo Luo,Junyou Yang
Electronic packaging materials with efficient heat dissipation and anti-electromagnetic-interference performance are highly desirable to realize the long-term stable operation of highly integrated electronic devices. Such combined functions of heat dissipation and anti-electromagnetic-interference are achieved here by filling 3D CNF@C-Ni network skeleton in epoxy resins (EP). The CNF@C-Ni is a carbon nanofibers network skeleton embedded with micron flower-like C-Ni particles and has been obtained by carbonizing nickel metal–organic frameworks (Ni-MOF) embellished bacterial cellulose. The 3D CNF@C-Ni network skeleton provides a highly efficient heat transfer channel for EP, rendering a high thermal conductivity of 0.5 W·m −1 K −1 at room temperature for the 5 wt% CNF@C-Ni filled EP, ~2.8 times higher than that of pristine EP. In addition, the flower-like C-Ni particles realize an optimization in the impedance matching of CNF@C-Ni/EP, enabling a high electromagnetic wave absorption performance in the wave-transparent epoxy resins. In particular, a lowest reflection loss value of −49.77 dB at 13.44 GHz with a maximum effective bandwidth of 5.44 GHz (from 12.08 to 17.52 GHz) has been achieved in the 5 wt% CNF@C-Ni filled epoxy resins with a thickness of 2.2 mm. Such a new dual-functionated epoxy resin with combined high electromagnetic wave absorption and thermal management performance shows great potential in manufacturing of highly integrated electronic devices.
研究领域:
材料科学
·
电子工程
·
复合材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Lian Yin,Jiale Zhang,Jianjian Luo,Yongqian Shi,Bin Yu,Sheng Zhang,Keqing Zhou
With the continuous advancement of electronic devices, flexible thin films with both thermal management functions and excellent electromagnetic interference (EMI) shielding properties have received much attention. Hence, inspired by Janus, a CNF/MXene/ZnFe 2 O 4 @PANI composite film with an asymmetric gradient alternating structure was successfully prepared by adjusting the filler content of the conductive and magnetic layers using a vacuum-assisted filtration method. Benefiting from the magnetic resonance and hysteresis loss of ZnFe 2 O 4 @PANI, conductive loss and dipole polarization of MXene, as well as the exclusive “absorption-reflection-reabsorption” shielding feature in the alternating multilayered films, CM&CZFP-4G film has superior EMI shielding performance, with an EMI SE of up to 45.75 dB and shielding effectiveness of 99.99%. Surprisingly, the composite film maintains reliable EMI shielding properties even after prolonged erosion in harsh environments such as high/low temperatures, high humidity, acids and alkalis. Furthermore, the CM&CZFP-4G responded quickly within about 50 s and reached a maximum steady-state temperature of 235.8 °C at an applied voltage of 9.0 V, indicating the obtained film acquired outstanding and controllable Joule heating performance. This result was attributed to the homogeneous dispersion of MXene to build up a conductive network and endow the CNF/MXene with high conductivity. Meanwhile, the fire resistance of CM&CZFP-4G was significantly improved compared to pure CNF, which guaranteed fire safety during its application. Additionally, contributed by long fiber entanglement of CNF, extensive hydrogen-bonding interactions and multilayer structural design, the CM&CZFP-4G film exhibits excellent mechanical characteristics, with the tensile strength and fracture strain of 27.74 MPa and 6.21%, separately. This work offers a creative avenue to prepare multifunctional composite films with electromagnetic shielding and Joule heating for various application environments.
研究领域:
材料科学
·
电子工程
·
热管理技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Junyu Lu,Mushan Yuan,Xiaochuang Di,Quan Yuan,Long Ni,Yinfu Luo,Yang Chen,Huawei Zou
Lightweight structural/microwave absorption (MA) integrated materials with broadband MA are urgently needed in the aerospace field. In this study, crosslinked PVA/CNF backbone-supported RGO foams were successfully filled into aramid honeycomb structures with significant broadband MA performance and structural enhancement properties through a synergistic strategy of chemical crosslinking, environmental drying and chemical vapor reduction. Flexible tuning of the electromagnetic parameters of the PVA/CNF@GO foam can be achieved by adjusting the number of GO parts. The 30 mm thickness of the PVA/CNF@14GO foam achieves a broadband effective absorption of 13.25 GHz, covering almost all C, X and Ku bands. Microstructural characterization and electromagnetic parameter tests proved that the uniform distribution of RGO was achieved with crosslinked PVA/CNF as the backbone, which resulted in less Debye relaxation and the construction of uniform conductive pathways. Therefore, the PVA/CNF@14GO-filled honeycomb not only enables the composite honeycomb to achieve broadband MA performance, but also achieves a compressive strength of 5.52 MPa, which is an improvement of 262.86 % with respect to that of the pure honeycomb. The obvious overlap of the CST power loss distribution and the electric field distribution region shows that the conductive loss and the 1/4 wavelength interference are the main paths for energy dissipation in the composite of the PVA/CNF@GO-filled honeycomb. The honeycomb-filled PVA/CNF@GO lightweight foams obtained in this chapter have good broadband microwave absorption properties and higher structural strength, which provide important design strategies and practical references for the development of high-performance MA-filled honeycomb structures.
研究领域:
材料科学
·
航空航天工程
✓ 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）