Results 1 to 10 of about 53 (53)

Comparative Study of Different Materials Immobilized Naringinase(不同材料固定化柚苷酶的比较) [PDF]

open access: yesShipin kexue jishu xuebao, 2015
Chitosan, sodium alginate, activated carbon,and graphene oxide were selected to immobilizenaringinase. By comparing the activities of immobilized naringinase and the enzyme-carrying rates of the enzyme carriers, it was found that graphene oxide was the ...
DUAN Zhitao(段志涛)   +2 more
doaj   +1 more source

非均相光-Fenton技术在水处理领域的研究进展

open access: yesGongye shui chuli, 2021
非均相光-Fenton技术是基于传统Fenton试剂法,通过引入光照和新型催化剂实现光催化氧化和Fenton反应的协同作用,促进活性自由基(如·OH)的生成和有机物高效降解的新型高级氧化技术。综述了非均相光-Fenton体系的技术特征、关键影响因素和氧化原理,详细阐述了铁物种与二氧化钛、石墨相氮化碳、氧化石墨烯/还原氧化石墨烯、钒酸铋以及三氧化钨不同类型半导体结合的非均相光-Fenton材料的光催化氧化原理和有机物降解机制。
刘晨   +5 more
doaj  

氧化石墨烯材料在污水处理中的应用研究进展

open access: yesGongye shui chuli, 2020
氧化石墨烯材料具有巨大的比表面积、良好的亲水性和优异的吸附性能,在污水处理方面具有广阔的应用前景。综述了氧化石墨烯在污水处理方面的研究进展,重点分析了氧化石墨烯材料对污水中有机物、重金属和染料的吸附机理和吸附效果;氧化石墨烯作为吸附材料时其效果和成本都优于普通吸附材料;着重阐述了氧化石墨烯对水体污染物吸附性能的影响因素,如初始pH、氧化石墨烯投加量、污染物初始浓度、溶液温度等。总结了氧化石墨烯应用于污水处理时的适宜环境和条件,为未来氧化石墨烯在污水处理方面的应用提供一些思路。
张洁   +4 more
doaj  

改进TiO2光催化降解水体中萘普生的研究

open access: yesGongye shui chuli, 2023
为解决TiO2光催化降解水体中萘普生时易团聚、低活性的问题,对P25 TiO2和石墨烯进行表面修饰,直接混合制得改进TiO2催化剂,随后将其用于光催化降解水体中的萘普生,并研究降解动力学、作用机制以及生物毒性。XRD、FTIR、SEM表征结果表明,TiO2经过修饰后引入了氨基,与改性石墨烯引入的含氧基团之间存在静电引力和化学键力,在这些力的作用下,TiO2较好地接枝在石墨烯的表面。暗吸附、生物毒性、催化和猝灭实验结果表明,在500 W氙灯光照条件下,依靠石墨烯的协助,TiO2在50 min内能将10 ...
林龙利   +4 more
doaj  

氧化石墨烯-核酸传感器用于银离子的高效分析

open access: yesGongye shui chuli, 2021
银作为一种常见的重金属及贵金属,广泛应用于冶金、化工及生物医药等行业。实现对工业废水中银离子的高效分析,对银离子的定量回收及环境监测具有重要的指导意义。设计了一种氧化石墨烯-核酸传感器,基于氧化石墨烯吸附单链核酸分子探针以及猝灭荧光的性质而降低背景信号;在银离子的存在下,单链核酸探针因形成C-Ag+-C复合结构而解离氧化石墨烯表面并恢复荧光信号;进一步,在核酸酶(DNase Ⅰ)的作用下,完成银离子的循环反应,通过荧光信号的累积实现银离子的高灵敏度、高特异性检测。实验结果表明 ...
欧小文, 张凯, 刘俊逸, 曾国平
doaj  

Synergistic Engineering of Amorphous Cathode and Hybrid Electrolyte Toward Stable High‐Voltage Aqueous Zn‐Ion Batteries

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT The development of high‐voltage aqueous zinc‐ion batteries (AZIBs) is primarily hindered by the lack of suitable cathode materials and electrolytes that can work in broad voltage windows. Herein, we propose a synergistic strategy that concurrently addresses these challenges through the integration of an amorphous vanadium oxyphosphate/graphene
Xianyu Liu   +7 more
wiley   +1 more source

Bidentate Coordination by Graphene Oxide‐Enhanced γ‐Cyclodextrin for Synergistic Solvation and Stabilization of the Zn Anode

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT With the rapid development of the energy storage industry, aqueous zinc‐ion batteries (AZIBs) have attracted considerable attention in the field of energy storage because of their inherent advantages, thereby emerging as a promising research direction with significant potential.
Lingjiao Fu   +8 more
wiley   +1 more source

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

RGO-ZnO光催化降解抗生素及还原Cr(Ⅵ)的研究

open access: yesGongye shui chuli, 2021
采用一步水热法制备还原氧化石墨烯-氧化锌(RGO-ZnO)复合材料,并将其用于光催化降解抗生素环丙沙星和还原Cr(Ⅵ)。研究发现,在光催化降解和还原体系中,光催化活性明显高于单独的氧化或还原体系,并有利于延长光生载流子寿命。此外,RGO-ZnO的光催化活性明显高于ZnO。通过电镜表征,发现RGO-ZnO为二维结构与二维结构复合(2D-2D),固体荧光光谱表明RGO-ZnO更有利于电子-空穴对的分离。
马瑞霄, 周浩, 张燕辉
doaj  

改性氧化石墨烯对废水中重金属的吸附

open access: yesGongye shui chuli, 2017
简述了石墨烯的基本结构以及氧化石墨烯在结构上的优越性。概述了氧化石墨烯的主要改性方法。针对不同的影响因素,总结了改性氧化石墨烯对废水中重金属的吸附效果。对去除水体中重金属的反应机理进行了归纳,指出了改性氧化石墨烯目前应用在污水处理中存在的问题及应用前景。
李仕友   +4 more
doaj  

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