Results 21 to 30 of about 85,244 (133)

An Asymmetric Sandwich‐Structured Hydrogel Enables High‐Output Stable Moist–Electric Generation and Self‐Powered Sensing

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Moisture‐enabled electricity generation technology offers a new paradigm for sustainable energy harvesting, but its practical applications are still limited by issues such as low output power and insufficient long‐term stability. In this paper, an asymmetric sandwich‐structured hydrogel moist–electric generator (SSHMEG) with an ion ...
Peng Chen   +7 more
wiley   +1 more source

Hybrid Probiotic Hydrogel With Curcumin‐Loaded MnO2 Nanoparticles Enhances Diabetic Wound Healing Through Multimodal Microenvironmental Regulation

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Skin wound injuries are often accompanied by bacterial infections and severe inflammation. Especially, M1‐type macrophages at the wound site can trigger a cascade of inflammatory responses, mediating a vicious cycle of inflammation. Meanwhile, hypoxia further exacerbates vascular damage and constriction in the wound microenvironment, thereby ...
Xianfeng Wang   +6 more
wiley   +1 more source

常压干燥制备二氧化硅气凝胶 [PDF]

open access: yes, 2010
二氧化硅气凝胶是典型的纳米多孔轻质材料,由于具有独特的性能并在许多领域存在潜在的应用价值而受到广泛关注。二氧化硅气凝胶的制备传统上采用超临界干燥工艺,但此工艺成本高、工艺复杂而且具有一定的危险性。为了实现二氧化硅气凝胶的大批量生产和商品化应用,研究低成本常压干燥制备技术非常必要。目前常压干燥制备工艺已取得了较大进展,本文主要介绍了二氧化硅气凝胶的常压干燥制备方法及其特点,并概述了二氧化硅气凝胶复合材料制备的最新研究进展。以纤维和聚合物为增强体的二氧化硅气凝胶复合材料改善了气凝胶的力学性能 ...
程璇, 吴国友, 张颖, 余煜玺
core  

煤气化灰水除硅方式对比与机理探讨

open access: yesGongye shui chuli, 2023
根据硅的存在形式,水溶液中存在的硅主要分为可溶硅和胶体硅。本研究对比分析了药剂法和电絮凝法对某煤化工公司煤气化灰水中2种形式硅的脱除效果。结果表明,对于不同形态的硅酸,NaAlO2适合脱除可溶性硅,而聚合氯化铝对胶体硅的脱除效果比较理想;NaAlO2和聚合氯化铝的复配药剂在投加比n(Al)/n(Si)=4时可以显著增强对可溶硅和胶体硅的去除效果,经120 min反应后,可溶硅去除率为56.1%,胶体硅去除率为66.9%,显著高于单一NaAlO2对可溶硅(49.7%)和单一聚合氯化铝对胶体硅(58.8 ...
周超   +4 more
doaj   +2 more sources

Boosting Piezoelectric Voltage Constant in 3D‐Interconnected PZNNT Porous Piezoceramics via Pore Architecture Engineering

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT In conventional piezoceramics, the coordinated change between the dielectric constant (εr) and the piezoelectric charge constant (d33) usually limits the piezoelectric voltage constant g33 (g33 = d33/εr), a critical figure of merit for piezoelectric sensors.
Xiaoying Feng   +7 more
wiley   +1 more source

独立式金属有机骨架气凝胶及其制备

open access: yes, 2023
本申请涉及一种形成气凝胶的方法,包括通过以下方法制备金属有机骨架(MOF)气凝胶:制备包含用于金属有机骨架气凝胶的金属前体的多孔固体,然后通过使多孔固体与混合有溶剂的有机配体反应,从而将金属前体转化为金属有机骨架 ...
柳章, 杨经伦
core  

Scalable Synthesis of Ultrathin Silica Nanosheets for Applications in Thermal‐Management Aerogels and Flexible Composite Films

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Silica nanosheets (SiO2 NSs) hold great promise for advanced thermal protection applications because of their exceptional thermal and chemical stability. However, their development has been hindered by challenges in scalable synthesis and structural integration for specialized applications.
Qun‐Yao Yuan   +3 more
wiley   +1 more source

植物油凝胶的制备机制及在食品中 应用的研究进展Research progress on the preparation mechanism of vegetable oleogels and its application in food

open access: yesZhongguo youzhi
植物油凝胶通常是通过在液态植物油相中添加凝胶剂并经特定加工工艺制成,其兼具植物油的健康属性和传统固体脂肪的理化特性,可以部分或完全替代传统固体脂肪。旨在为进一步深入研究和应用植物油凝胶提供参考,综述了植物油凝胶的凝胶机制、凝胶剂种类及其在食品工业中的主要用途,对几种常见的植物油凝胶进行了介绍,并对今后植物油凝胶的研究方向进行了展望。植物油凝胶的制备方法分为直接分散法和间接法,直接分散法中凝胶机制包括粒子结晶凝胶化、自组装纤维网络凝胶化和聚合物网络凝胶化,间接法中有乳液模板法、泡沫模板法和气凝胶模板法 ...
申晓龙1,薛雯雯1,陈强2,吴隆坤1 SHEN Xiaolong1, XUE Wenwen1, CHEN Qiang2, WU Longkun1
doaj   +1 more source

废石墨制备石墨烯气凝胶对亚甲基蓝的吸附

open access: yesGongye shui chuli, 2020
以废旧钴酸锂电池负极石墨为原料制备石墨烯气凝胶,研究了其对亚甲基蓝的吸附效果和吸附机理。结果表明,制备的石墨烯气凝胶具有大量的孔隙和柔软片层结构。当吸附剂投加量为2.5 g/L,亚甲基蓝初始质量浓度为50 mg/L,pH为8,温度为30℃时,20 min即达到吸附平衡,吸附率为98.6%。该吸附剂对亚甲基蓝的吸附符合Langmiur模型,最大吸附量为41.39 mg/g;吸附反应动力学符合准二级动力学方程。吸附过程包含化学吸附和物理吸附。
郑莹   +6 more
doaj   +2 more sources

MOFs@气凝胶吸附去除水中污染物的研究进展

open access: yesGongye shui chuli
MOFs@气凝胶相较于单一的MOFs具有超高的比表面积、较高的孔隙率、较好的聚合物相容性以及出色的结构孔隙等特性,可高效吸附去除水中污染物。介绍了MOFs@气凝胶的结构和理化性质以及MOFs@气凝胶的常用合成策略,并重点分析了合成策略的优缺点以及所面临的挑战;详述了MOFs@气凝胶对污水中重金属离子和有机化合物的吸附条件和吸附性能,对相关吸附机理做了系统总结和对比;阐述了MOFs@气凝胶在吸附水中污染物方面的可重复利用性。最后针对MOFs@气凝胶中MOFs的稳定性、气凝胶的基质材料 ...
唐朝春   +6 more
doaj   +2 more sources

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