Results 41 to 50 of about 1,565,918 (133)

Oxygen‐Vacancy‐Enriched Ho/Yb/Sm‐Doped In2O3 With Reconfigured Electronic Structure for Highly Selective Ethylene Glycol Sensing

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT In this work, In2O3 and three rare earth (RE)‐doped In2O3 composites (Ho, Yb, and Sm‐doped) were prepared via the hydrothermal method. Compared with In2O3 sensors, those fabricated from the three composite materials (RE–In2O3) exhibit varying degrees of enhanced response toward ethylene glycol (EG) gas. At 35% relative humidity (RH) and 250°C,
Chang Liu   +9 more
wiley   +1 more source

一种高吸附性能有机膨润土的制备方法

open access: yes, 2013
本发明公开了一种增强有机膨润土吸附性能的新方法,将膨润土原土研磨粉碎后进行锂离子交换,然后用一定量的有机阳离子交换部分锂离子,最后进行加热处理,将层间域锂离子迁移到膨润土片层内,即得具有良好吸附性能的有机膨润土吸附材料。本发明的特点是将有机阳离子预先交换到膨润土层间域,利用有机阳离子的柱撑效应来防止膨润土层结构塌陷,然后进行加热减电荷处理,可最大限度保留层间域吸附空间,提高有机膨润土的比表面积和吸附位点,进而可增强有机膨润土对毒性有机污染物的吸附性能。本发明可降低有机膨润土的污水处理成本 ...
陈情泽   +5 more
core   +1 more source

金属有机骨架材料ZIF‒67对四环素选择性吸附研究

open access: yesGongye shui chuli, 2022
为从有机废水中选择性吸附四环素(TC),在水系条件下采取简便快速的方法制备了金属有机骨架材料ZIF‒67。采用多种手段对合成得到的ZIF‒67进行了表征,研究了制备材料在TC与亚甲基蓝(MB)混合体系中的选择吸附性能,并考察了混合体系pH、污染底物配比、吸附体系中共存离子等因素对吸附过程的影响。结果表明,在温度为298 K,pH=6.5,MB和TC初始质量浓度分别为30、40 mg/L的条件下,ZIF‒67对TC的吸附选择性能够达到93.5%。ZIF ...
陈慕华   +6 more
doaj   +2 more sources

Synergistic Enhancement of Toluene Catalytic Oxidation via Pt‐Induced Oxygen Vacancies and Heterojunction Built‐In Electric Field

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Improving catalytic activity for volatile organic compounds (VOCs) oxidation and enhancing water‐tolerance stability remain challenging in practical applications. Herein, a composite catalyst integrating Pt/CoOx‐NiOx mesoporous nanorods (MNRs) with a phenyltriethoxysilane (PhTES)‐modified surface was fabricated via a facile route for toluene ...
Jiaqin He   +13 more
wiley   +1 more source

基于微孔矿物吸附耦合微波降解的有机污染物去除方法

open access: yes, 2012
本发明公开了一种微孔矿物吸附耦合微波降解的有机污染物去除方法。其主要步骤是在吸附柱中填充疏水性多孔矿物吸附剂,用于吸附有机废水中的有机污染物,待吸附剂达到饱和后,启动微波发生器,使吸附在吸附柱内的有机污染物在微波诱导下发生降解。通过两根吸附柱的交替运行和再生,实现对有机废水的连续处理。本发明通过疏水性微孔矿物吸附耦合微波诱导降解技术,实现有机污染物从水体中的高效去除、降解和载体的循环利用,并将污染物彻底矿化为无毒无害的小分子物质,可用于地下水、地表水和饮用水的污染治理中 ...
胡二丹, 程和发
core   +1 more source

吸附法去除水中典型有机络合态重金属的研究进展

open access: yesGongye shui chuli
工业废水中低浓度、难降解、高毒性有机络合态重金属的有效去除是当前重金属污染治理领域的热点问题。吸附法因成本低、效率高、操作简便等优点在有机络合态重金属污染治理领域备受关注。首先详细阐述了近年来主流吸附剂的发展现状及其在去除水体中典型EDTA络合态重金属方面的研究进展,评述了不同类别吸附剂的优缺点及相应的性能优化方法,并归纳了相关吸附剂的反应机理。之后将传统有机络合态重金属污染治理技术与当下新型吸附技术各自的优点和局限性进行了对比,为在复杂环境中合理选择最佳类型吸附剂提供了有益参考 ...
张伟   +4 more
doaj   +2 more sources

Atomically Dispersed Platinum Sites Immobilized on NiFe LDH by Controlling Localized Amorphization for Efficient Alkaline Electrocatalytic Hydrogen Evolution

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Platinum (Pt) single‐atom catalyst (SAC) shows great promise for hydrogen evolution reaction (HER), but faces a huge challenge in activity enhancement due to the isolated single‐atom sites. Fabricating support with partially amorphous (pa) structures to realize the synergetic interaction in neighboring single atoms could facilitate H2O ...
Yanhui Song   +9 more
wiley   +1 more source

改性/新型氟吸附材料的研究进展

open access: yesGongye shui chuli, 2018
按照金属基吸附剂、炭基吸附剂、黏土矿物类吸附剂、高分子生物类吸附剂、工业副产物或废弃物、纳米材料、陶粒等吸附剂类型,全面综述了近些年来国内外在含氟水吸附处理中吸附材料的研究开发与应用现状。着重介绍了传统吸附材料的改性和一些新型吸附材料的合成、吸附性能和机理,并对今后氟吸附材料的发展方向进行了展望。
赵迎新   +4 more
doaj   +2 more sources

Zn-MOF-74对Cd(Ⅱ)的吸附性能及机理研究

open access: yesGongye shui chuli, 2020
研究了新型吸附材料Zn-MOF-74对水体中重金属Cd(Ⅱ)的吸附性能和吸附机理。结果表明,吸附过程较好地符合Langmuir模型、Temkin模型、D-R模型和准二级动力学模型,最大吸附量为16.77 mg/g;吸附过程为物理吸附和化学吸附共同作用,且为自发的放热反应。采用Zn-MOF-74处理0.5 mg/L的含镉废水,有效时长可达36.25 h,Cd(Ⅱ)去除率>90%;NaCl溶液的解吸率可达到85%。吸附位点主要集中在孔道中,有静电作用、化学作用和氢键作用。
吴成晨   +5 more
doaj  

Upcycling of Waste Polyethylene Terephthalate Plastics to Fabricate Cobalt–Nickel Metal–Organic Frameworks and Their Phosphides for Efficient Oxygen Evolution Reaction

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT The urgent environmental crisis caused by polyethylene terephthalate (PET) waste necessitates efficient upcycling strategies. Herein, we establish a novel pathway to transform waste PET plastic into a high‐performance catalytic material for mediating the oxygen evolution reaction (OER). Through a one‐step hydrothermal process, waste PET serves
Xin Wang   +5 more
wiley   +1 more source

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