Results 31 to 40 of about 1,565,918 (133)
ABSTRACT The escalating severity of global environmental pollution necessitates the development of sustainable and efficient adsorption materials. Nanocellulose (NC), sourced from the most abundant natural polymer on earth, has shown great potential in this field due to its renewability, biodegradability, and exceptional nanoscale properties.
Yaqian Yu +5 more
wiley +1 more source
微塑料在水环境中能够吸附重金属污染物并作为重金属污染物的载体,在全球淡水系统和海洋系统中广泛传播,对全球水环境造成严重影响。因此,了解微塑料对重金属的吸附行为、机理以及吸附后对环境中生物的毒性影响十分必要。微塑料对重金属的吸附性能取决于微塑料本身的物理化学性质,如塑料类型、比表面积和结晶度等。此外,环境因素如pH、离子强度、溶解性有机质浓度和老化作用也会显著影响微塑料吸附重金属的能力,使得微塑料对重金属的吸附过程十分复杂。基于此,详细综述了微塑料对水环境中重金属吸附行为的最新研究进展 ...
张皓 +5 more
doaj +2 more sources
ABSTRACT Platinum‐based electrocatalysts are fundamentally constrained by strong oxygen binding, which restricts the oxygen reduction reaction (ORR) kinetics, and by severe CO poisoning, which hinders the methanol oxidation reaction (MOR). To address these limitations, we synthesized PdPtRuIrRhNi high‐entropy alloy (HEA) mesoporous nanotubes that ...
Hong Pan +6 more
wiley +1 more source
固体吸附制冷是利用低温热源的一种新型制冷方式。本文对多种固体吸附制冷工质对进行了试验研究,得到不同温度下的吸附曲线和解吸曲线,并根据D-A方程进行了线性拟合得到各工质对的W_0、D值。通过分析和比较,在所选工质对中,活性炭纤维-甲醇的吸附解吸综合性能最好,粉末活性炭的性能也较好,但要求的解吸温度较高。乙醇代替甲醇作制冷剂是可行的,但甲醇-乙醇混合物作制冷剂是不可行的。本研究还设计了一种新型太阳能制冷-热水两用机,采用活性炭粉末-甲醇为工质对,两个吸附器,每个吸附器内装4kg活性炭粉末 ...
毛雪梅
core +1 more source
Insights Into the Temperature‐Dependent Oxidation Mechanism of Metallic Cerium in H2O‐N2 Atmospheres
ABSTRACT Metallic cerium (Ce), a widely used surrogate for actinide metals, enables mechanistic studies of reactions in complex gas environments under controlled and safer laboratory conditions. Here, the oxidation behavior of Ce in H2O‐N2 mixed atmospheres was investigated from 200°C to 350°C using in situ thermogravimetry–mass spectrometry, in situ X‐
Kun Huang +10 more
wiley +1 more source
应用平衡法研究了红壤对草酸、柠檬酸、酒石酸和苹果酸的吸附行为。结果表明:红壤对有机酸的吸附量随着有机酸平衡溶液浓度的增加而增加,有机酸种类不同,吸附量也不同。有机酸在红壤中的吸附行为均可以很好地用Langmuir、Freundlich和Temkim方程描述,其中以Langmuir方程的拟合效果最好。红壤对有机酸均具有较高的吸附率,在0.5~20mmolL-1初始浓度范围内,草酸、柠檬酸、酒石酸和苹果酸的吸附率最大分别可达89.2%、77.5%、67.4%和47.1%。红壤对柠檬酸 ...
王兴祥 +3 more
core +1 more source
ABSTRACT Although alloy‐based materials present potential for peroxymonosulfate (PMS) activation, metal ion leaching remains severely restricted during the pollution degradation process. Herein, the porous carbon‐supported Fe–Cu alloy derived from industrial copper slag was prepared to remove the organic pollutants from wastewater while inhibiting the ...
Xuanren Chen +10 more
wiley +1 more source
ABSTRACT Heteroatom coordination regulation is an effective strategy to enhance Fenton‐like catalysis of single atom catalysts, yet its impact on the local microenvironment of active sites still requires in‐depth investigation. Herein, Cl2–Fe–NC catalysts with axial Cl coordination are prepared.
Jing‐Hao Yan +6 more
wiley +1 more source
ABSTRACT Germanium is a critical dispersed metal, yet sustainable recovery from dilute solutions is limited by sorbents that are difficult to regenerate and operate in continuous mode. Here, we fabricate a regenerable 3D‐printed hydrogel monolith (3D‐ATO‐GS) by integrating hydroxyl‐rich amorphous TiO2 nanoparticles into an alginate/gelatin scaffold ...
Wenhuan Guo +6 more
wiley +1 more source

