功能化MWCNTs和生物血液相容性PMMA-MWCNT纳米复合材料作为非酶H2O2传感器和潜在超级电容器应用的电极材料

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials Pub Date : 2025-09-23 DOI:10.1016/j.diamond.2025.112876

Sindhuja Pethaperumal , Aghilesh Karunakaran , K. Kavibharathy , Kumaran Vediappan , G.T. Mohanraj

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引用次数: 0

摘要

研究了酸功能化多壁碳纳米管（MWCNT）对过氧化氢（H2O2）的电化学传感性能。硫酸处理的MWCNT （MWCNT- a）和H2SO4/HNO3处理的MWCNT （MWCNT- b）的LOD值较低。mwcnts - a的灵敏度为11,260 mA.mM−1.cm−2。由此推断，碳纳米管的硫酸功能化不会对碳纳米管的结构造成破坏，从而使碳纳米管具有良好的电化学性能。绝缘生物血液相容性聚甲基丙烯酸甲酯(PMMA)-MWCNT复合材料传感器制成1至7 wt%的MWCNT负载。PMMA- 7% MWCNT-A纳米复合材料的LOD最低，为1.968 μM，显示了PMMA基复合材料对H2O2传感的有效性。目前的研究报道了基于单一功能化MWCNT （F-MWCNT）的H2O2传感器，而不是其他混合物，也报道了基于绝缘聚合物基体的H2O2传感器。通过具体的电容计算，分析了F-MWCNT和PMMA-MWCNT材料在超级电容器中的潜在应用。MWCNT-A和pmma - 7% MWCNT-A复合材料的比电容值分别为408.33 F/g和200.4 F/g。该材料有望在医学诊断、超级电容器等领域得到应用。

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Functionalized MWCNTs and bio-hemocompatible PMMA-MWCNT nanocomposites as electrode materials for non-enzymatic H2O2 sensors and potential supercapacitor applications

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Functionalized MWCNTs and bio-hemocompatible PMMA-MWCNT nanocomposites as electrode materials for non-enzymatic H2O2 sensors and potential supercapacitor applications

Acid functionalized multiwalled carbon nanotubes (MWCNT) were tested for electrochemical sensing of hydrogen peroxide (H₂O₂). Sulfuric acid treated MWCNT (MWCNT-A) and H2SO4/HNO3 treated MWCNT (MWCNT-B) exhibited low LOD values. MWCNT-A displayed high sensitivity of 11,260 mA.mM⁻¹.cm⁻². It is inferred that sulfuric acid functionalization of CNT did not cause damage to CNT structure leading to good electrochemical properties. Insulating bio-hemocompatible Polymethyl methacrylate (PMMA)-MWCNT composites sensors were fabricated with 1 to 7 wt% of MWCNT loading. PMMA-7 %MWCNT-A nanocomposites exhibited the lowest LOD of 1.968 μM showing the usefulness of PMMA based composites for H₂O₂ sensing. Current research reports H₂O₂ sensors based on sole functionalized MWCNT (F-MWCNT) free from other hybrids and also reports insulating polymer matrix based H₂O₂ sensors. The F-MWCNT and PMMA-MWCNT materials were analysed for potential supercapacitor applications through specific capacitance calculations. A high specific capacitance value of 408.33 F/g for MWCNT-A and 200.4 F/g was obtained for PMMA-7 %MWCNT-A composites. The developed materials may find possible applications in medical diagnosis, supercapacitors and other fields.

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来源期刊

Diamond and Related Materials 工程技术-材料科学：综合

CiteScore

6.00

自引率

14.60%

发文量

702

审稿时长

2.1 months

期刊介绍： DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices. The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.