Synthesis of nickel nanosheet/graphene composites for biosensor applications

Synthesis of nickel nanosheet/graphene composites for biosensor applications
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用于生物传感器应用的镍纳米片/石墨烯复合材料的合成

DOI:
10.1016/j.carbon.2014.08.043
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发表时间:
2014-11
期刊:
影响因子:
10.9
通讯作者:
Baohe Yang
Baohe Yang
中科院分区:
材料科学2区
文献类型:
--
作者:
Wenlong Guo;Hongji Li;Mingji Li;Wei Dai;Zhou Shao;Xiaoguo Wu;Baohe Yang

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使用化学气相沉积(CVD)生长石墨烯基纳米结构是一种有前途的新应用方法。CVD工艺通常使用高质量的金属薄膜作为催化剂基底,并且需要对实验条件进行精确控制。本文报道了以Ni(NO3)2为催化剂前驱体,采用直流电弧等离子体喷射CVD法直接合成Ni纳米片/石墨烯复合材料。复合材料由石墨烯纳米片、石墨烯纳米带和核壳Ni/石墨烯纳米片组成。在该方法中,不需要催化剂基底,并且非常高质量的石墨烯在Ni的{111}面生长。结果表明,Ni纳米片/石墨烯复合材料可作为L-丙氨酸传感的敏感膜。这种强的电催化性能是由于石墨烯的协同作用,它促进了电子转移,而Ni的高催化活性。
The growth of graphene-based nanostructures using chemical vapor deposition (CVD) is a promising approach for novel applications. CVD processes typically use high-quality metal films as catalyst substrates, and require accurate control over the experimental conditions. Here, we report the direct synthesis of Ni nanosheet/graphene composites using a DC arc plasma jet CVD method, using Ni(NO3)2as a catalyst precursor. The composites consisted of graphene nanosheets, graphene nanoribbons, and core–shell Ni/graphene nanosheets. In this process, no catalyst substrate was required, and the very high-quality graphene grew at the {1 1 1} plane of the Ni. It was demonstrated that the Ni nanosheet/graphene composites could be used as sensitive films forl-alanine sensing. The strong electrocatalytic properties resulted from the synergetic effects of the graphene, which enhanced the electron transfer, and the high catalytic activity of the Ni.
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