CELLULOSE
·
2022
·Vol. 29
·期 8
·4439-4453
·
IF 6.123
Li Yinan,Li Huixin,Huang Jin,Huang Liulian,Chen Lihui,Ni Yonghao,Zheng Qinghong
A highly transparent ZnO/cellulose composite membrane with UV sensing and shielding abilities was prepared via a facile blending method. ZnO nanoparticles (ZnO NPs) without additional surface modification are uniformly dispersed in the regenerated cellulose (RGC) matrix through the N-methyl-morpholine-N-oxide (NMMO) dissolution of cellulose. Agglomeration of the ZnO NPs is effectively minimized, thanks to the strong hydrogen bonds between ZnO NP and cellulose. The optimized ZnO/RGC membrane exhibits not only high a shielding ratio of 97.67 ± 0.11% for UV lights (< 360 nm) but also high transparency of 87.12±1.55% in the visible light region, which is comparable to traditional plastic products. Benefiting from the high photoelectric performance of ZnO NPs, a UV sensor and a UV blocker were integrated into the same device. The as-fabricated ZnO/RGC membrane, with sensitive UV detecting and effective blocking, as well as the rich availability of cellulose as raw material and its biodegradable nature, is an ideal candidate for high-performance UV detection and protection applications. Graphical abstract
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2018
·
IF 4.514
Fang Wang,Yadong Wu,Yudong Huang
Hybrid organic/inorganic nanocomposites based on aramid nanofibers (ANFs) and different amounts of polyhedral oligomeric silsesquioxane (POSS) nanostructured chemicals were prepared via solution blending and vacuum-assisted flocculation, compared with traditional film fabrication methods, this process is time-saving by adopting ethanol as agglomerator. The mechanical properties of ANFPs membranes could be altered by changing the POSS content, in which the POSS served as a cross-linking agent between nanofibers, and ANFPs composite membrane presented the optimal tensile strength with 6 wt.% POSS NPs embedding in the nanocomposite. In addition to the satisfactory mechanical performance and vitreousness, the unique thermal assets of ANFs and POSS further enabled the membranes with high thermal stability. Based on these results, it could be concluded that the ANFPs membranes developed here might provide the alternative materials for the practical application of strong, transparent and heat-resistant membrane.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2024
·
IF 10.7
Wei Guo,Zheng Zhang,Nian Li,Min Xi,Cui Liu,Shudong Zhang,Zhenyang Wang
Transparent materials accompanying ultraviolet and near-infrared (UV/NIR) shielding play a crucial role in sunlight management and are desirable for reducing energy consumption in buildings. Herein, a hollow flower-like core–shell hybrid, in which hollow TiO2 spherical cores are bonded with a CsxWO3 hierarchical nanosheet shell (h-TiO2@CsxWO3 hybrid), is prepared for high-efficiency absorption of UV/NIR light and corresponding transparent membrane-based UV/NIR light shielding for thermal management. Impressively, while maintaining high visible light transmission, the h-TiO2@CsxWO3 flower-like hybrids display the almost complete absorption of UV and NIR light caused by the multilevel synergistic scattering and absorption of incident light between the components. Next, to expand the application of building energy conservation engineering, the h-TiO2@CsxWO3 flower-like hybrids are spray-coated onto the surface of a PET film to serve as the membrane material, showing nearly 80% visible light transmission and complete shielding from UV and NIR light. As a proof of concept, based on the UV/NIR light absorbing shield strategy for thermal management, by transferring the as-prepared h-TiO2@CsxWO3/PET functional membrane as “window glass” on a home-made house model, a temperature reduction of ∼16.4 °C could be achieved relative to a blank house under 1 sun irradiation. Further, outdoor testing (Hefei, China) with simulated room temperatures below ∼25 °C throughout a full day's test cycle achieved a sub-ambient cooling temperature of ∼11.5 °C. Thus, both the solar radiation shielding capability and the combined outdoor service performance significantly advance the UV/NIR shielding strategy for real-world solar/thermal-management applications.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2017
·Vol. 5
·期 25
·6251-6258
·
IF 5.256
Yijie Zhou,Ning Li,Yunchuan Xin,Xun Cao,Shidong Ji,Ping Jin
Well-dispersed cesium-doped WO3 (CWO) nanocrystals are an attractive candidate as hosts that exhibit excellent near infrared-shielding ability owing to two kinds of absorptions: localized surface plasmon resonance absorption around 900 nm and small polaron absorption near 1800 nm. In this work, a simple thermal reduction method was introduced to synthesize a CWO powder, which was further dispersed by bead milling to obtain a CWO nanodispersion liquid. The CWO nanodispersion liquid can be employed to make a unique nonlinear optical foil with 70% visible transmittance and a near infrared transmittance less than 10%, while maintaining a high transparency with less than 1.0% haze. However, the main issue concerning CWO nanoparticle-based polymer foils is the detrimental photochromic effect under strong ultraviolet (UV) irradiation, which hampers their extensive application in energy-saving windows, such as in automobiles and architecture. Herein, the photochromic effect is largely relieved by embedding CWO nanoparticles into inert polyethylene terephthalate (PET) instead of mixing with resins like polyurethane or acrylic resin, and the final organic–inorganic nonlinear optical foils exhibit almost no coloration under strong UV illumination. Therefore, this study provides a new insight into making hybrid foils with high stability, transparency and multifunctionality in the optical and magnetic fields.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
·
2017
·
IF 4.164
Hao Zhang,Xiaogang Luo,Hu Tang,Mingming Zheng,Fenghong Huang
The aim of this study is to develop transparent maghemite/cellulose nanocomposite membranes with high porosity, high adsorption capacity and controlled release of doxorubicin to be used as a candidate for wound dressing. The membranes were fabricated by a tape casting method through blending a homogeneous dispersion of citrate coated maghemite nanoparticles and cellulose in the NaOH/urea aqueous solution system. The prepared membranes were characterized by Light transmittance measurements, Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), X-ray Diffractometry (XRD), Differential scanning calorimetry (DSC), Tensile tests and Vibrating sample magnetometer (VSM). Furthermore, porosity, swelling behavior, water loss ratio and Bovine serum albumin adsorption capacity were evaluated. Drug loading and release was investigated using doxorubicin hydrochloride as a model drug. In vitro cytotoxicity and cells morphology assays of cells growth and proliferation were also studied. This study served as a demonstration of the feasibility of maghemite/cellulose nanocomposite membranes for loading and release of bioactive compounds as a candidate for wound dressing.
研究领域:
生物医学工程
·
材料科学
·
药剂学
✓ 已验证
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2019
·
IF 4.784
Shaojie Zhang,Chao Yu,Na Liu,Yun Teng,Cuiyu Yin
In this study, cellulose pulp and urea were used to synthesize cellulose carbamate (nitrogen content reaches 4.5%) by low-cost and environmentally friendly solid-liquid phase method. Cellulose carbamate fluid was prepared by using sodium hydroxide aqueous solution as solvent. The fluid was regenerated and formed in a coagulation bath , and finally a regenerated cellulose membrane with high transparency and separation ability was obtained. The simple chemical treatment of cellulose not only greatly increased the mass fraction of cellulose dissolution (It has reached 15%) and retains the original crystal form and thermal stability of cellulose. The surface of the membrane was relatively dense, and the inside has regular microchannel . The factors affect the transparency and water flux of regenerated cellulose membranes were discussed by orthogonal experimental range analysis. The ability of the regenerated cellulose membrane to reject dyes was tested. The results showed that the rejection of methyl blue and congo red reached 100%, and the rejection rate of methyl orange reached 60%. The oil/water separation ability and the anti-pollution ability of the regenerated cellulose membrane were tested. The oil/water separation effect reached 100%. This membrane may have application prospect in water treatment, biotechnology.
研究领域:
材料科学
·
环境工程
·
膜技术
·
高分子化学
·
水处理
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）