Microwave synthesis and characterization of Pt nanoparticles supported on undoped nanodiamond for methanol electrooxidation

Bian, Linyan; Wang, Y.H.; Zang, Jianbing; Meng, Fanwei; Zhang, Xiaochen

doi:10.1016/j.ijhydene.2011.09.118

Cited by 29 publications

(14 citation statements)

References 42 publications

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“…A previous study reported that the surface of diamond behaves as an organic substance in certain chemical reactions. 36 The diamond surface is expected to have possibility of chemical reactivates as an organic substance.37 These findings led us to develop a novel utilization of diamond as a material of a catalyst or as a catalyst support for chemical reactions.To date, several scholars have focused on the diamond series, such as diamond electrodes, 38,39 and modified electrodes that use various types of diamonds, 40,41 but only a few studies on electrochemical sensors for diamond powder (DMP) detection of BPA and BPS have been reported. DMP is a pure carbon material with abundant negative charge.…”

mentioning

confidence: 99%

Selective Sensing of Bisphenol A and Bisphenol S on Platinum/Poly(diallyl dimethyl ammonium chloride)-diamond Powder Hybrid Modified Glassy Carbon Electrode

Zhang

Liu

Wang

et al. 2016

J. Electrochem. Soc.

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In this work, a new platinum (Pt) nanoparticles-functionalized poly(diallyl dimethyl ammonium chloride) (PDDA)-diamond powder (DMP) composite-modified glassy carbon electrode (GCE) was fabricated for electrochemical sensing of the selective or simultaneous determination of bisphenol A (BPA) and bisphenol S (BPS). The Pt/PDDA-DMP hybrid was characterized by Scanning electron microscopy, Transmission electron microscope, Fourier transform infrared, X-ray diffraction analyzer. This hybrid exhibited remarkable electrocatalytic activity towards the oxidation of BPA and BPS. The simultaneous determination of BPA and BPS by cyclic voltammetry yielded a difference of 0.316 V, which was sufficiently large for their potential recognition and simultaneous detection in mixtures. Differential pulse voltammetry was successfully used to simultaneously quantify BPA and BPS within the concentration range of 5-30 and 10-60 μM under optimal conditions, respectively. The detection limits (S/N = 3) of Pt/PDDA-DMP/GCE for BPA and BPS were 0.6 and 2.0 μM, respectively. The fabricated electrode showed good sensitivity, stability, and selectivity. The proposed method was successfully applied to determine BPA and BPS in biological samples. Bisphenol A (BPA) [2,2-bis (4-hydroxyphenyl) propane (C 15 H 16 O 2 )] is an important chemical raw material that is widely used in industrial production and daily life.1-3 It is extensively used in food cans, packing materials, water bottles, and baby bottles. As an environmental hormone material that causes abnormal hormone activity, BPA causes irreversible damage to organisms and the environment, and low doses can even result in human endocrine disorders. 5,6 In addition, BPA negatively affects female hormones, which can lead to a series of female diseases, such as induced precocious puberty, reproductive dysfunction, endometrial hyperplasia, and recurrent miscarriage. 7,8 Canada and China banned the use of BPA in baby bottles in 2010 and 2011, respectively, because of its negative effects on humans, particularly to children and infants. 9 In recent years, numerous companies and factories are currently using bisphenol S (BPS) [4,4 sulfomyldiphenol (C 12 H 10 O 4 S)] instead of BPA.10 BPS is widely used in polyethersulfone. The production and use of BPS as a chemical additive in pesticides, dyestuffs, colorfast agents, dye dispersants, and monomer in cyclic carbonates are increasing and will exceed those of BPA. 11,12 Although BPS has high thermal stability and low biodegradability, 13 it also has biological toxicity 14,15 and negative hormone effects.16,17 BPS and BPA disrupt the human endocrine system by interfering with several functional nuclear receptors.18 Thus, BPS is not a safe and reliable replacement for BPA. Several methods are available for state of the art tools for detecting BPS and BPA, such as automated on-line column-switching high performance liquid chromatography isotope dilution tandem mass spectrometry, 19 analytical paralysis gas chromatography mass spectrometry, 20 synchronous...

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mentioning

confidence: 99%

Selective Sensing of Bisphenol A and Bisphenol S on Platinum/Poly(diallyl dimethyl ammonium chloride)-diamond Powder Hybrid Modified Glassy Carbon Electrode

Zhang

Liu

Wang

et al. 2016

J. Electrochem. Soc.

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“…非掺杂的 ND 实际上也具有一定的导电性, 不过其导电机理与 BDD 不同。Zang 等 [44][45] 很早就开始研究非掺杂 ND 的电化学性能, 并发现 ND 表面缺陷和吸附的官能团使其具有一定导电性, 因此高稳定性的 ND 也可以做铂基催化剂的载体。他们利用微波乙二醇还原法制备了 Pt/ND, 并发现其对 MOR 具有较高催化活性, 且稳定性高于 Pt/C。ND 的粒径尺寸影响催化剂的催化活性, Lu 等 [46] 研究认为粒径为 5 nm 的 ND 负载的 PtRu 合金催化剂的活性最高。同时对 ND 进行表面改性处理, 在保持其出色稳定性的前提下 , 提高它的导电性及其与 Pt-NPs 之间的结合力, 或者降低阳极反应副产物的毒化作用, 可使 ND 更适合做催化剂的载体材料。具体的改性方法包括: (1)对 ND 进行真空热处理使其表面形成几纳米厚的石墨烯层, 获得核壳结构的石墨化金刚石(ND@G) [47] ; (2)在 ND 表面进行负载或者镀覆处理, 使其表面形成过渡族金属化合物(TMC) 纳米层, TMC 主要包括 TiO 2 、TiN、TiC 等 [48][49][50] 。与 Pt/ND 相比, Pt/ND@G 对 MOR 的催化活性显著提高, 氧化峰电流增大近一倍。通过计时电流测试, Zang 等 [47] 发现 Pt/ND@G 的催化电流比 Pt/ND 衰减的缓慢, 展现出更好的稳定性。Pt/ND@G 也可用于催化 ORR, 其稳定性也十分出色。Dong 等 [51] 发现真空热处理温度在一定程度上影响 Pt/ND@G 的 ORR 催化活性的稳定性, 通过加速老化试验(ADT), Pt/ND@G-1600(1600 ℃ 热处理 ) 和 Pt/ND@G-1300 (1300℃热处理)的 ESA 还剩下初始值的 67%和 35%, 而 Pt/C 仅剩下初始值的 5%, 如图 3(a)所示。ADT 前后催化 ORR 的半波电位的变化情况如图 3(b)所示, 其中 Pt/ND@G-1600 的半波电位左移了 19 mV, 而 Pt/ND@G-1300 和 Pt/C 则左移了 53 和 116 mV。这充分说明 Pt/ND@G-1600 的 ORR 催化活性下降最为缓慢, 稳定性最好。与此类似, Pt/TiO 2 /ND、 Pt/TiN/ND 和 Pt/TiC/ND 都表现出远优于 Pt/C 的稳定性, 这主要归功于高稳定性的 ND 为内核, 石墨烯层和表面的 TMC 层也都起到了提高导电性和锚定 Pt-NPs 的作用。图 3 (a)Pt/C、Pt/ND@G-1300 和 Pt/ND@G-1600 在 ADT 过程中 ESA 变化情况对比图, (b)ADT 完成前后三种催化剂的半波电位变化情况 [51] Fig. 3 (a) Changes of Pt/C, Pt/ND@G-1300 and Pt/ND@G-1600 ESA related (vs. initial) with cycle number, (b) half-wave potentials of Pt/GND1300, Pt/GND1600 and Pt/C before and after ADT [51] 此外, Pt/TiO 2 /ND、Pt/TiN/ND 和 Pt/TiC/ND 也展现了比 Pt/ND, 甚至 Pt/C 更高的 MOR 催化活性 [48][49][50] 。这主要是因为 Ti 可以形成 Ti-OH 基团, Ti-OH 可以有助于移除甲醇氧化过程中产生的中间产物, 提高 Pt-NPs 的抗 CO 中毒能力。…”

Section: 非掺杂的纳米金刚石为载体unclassified

Recent Progress in Diamond-based Electrocatalysts for Fuel Cells

Dong¹,

Wang²,

Zang³

2017

Journal of Inorganic Materials

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Attributed to highly stable structure of sp 3 hybridized carbon atoms, diamond has excellent physical and chemical stabilities. As new conductive diamond materials, boron-doped diamond (BDD) films and particles, as well as undoped nanodiamond (ND) has become the ideal support of the high stability electrocatalysts for fuel cells. Futher investigation showed that the activity and stability of electrocatalysts could be futher improved if the new diamond materials were properly processed. The doping treatment, including doping into diamond and the graphite structure from conversion of diamond, was used to produce diamond-based non-Pt electrocatalysts for fuel cells. It was considered that the sp 3 structure of diamond played a unique role in enhancing the stability of diamond-based non-Pt electrocatalysts. In this paper, related studies of diamond-based electrocatalysts were summarized for the references of future study.

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“…For example, electrodeposition of Pt nanoparticles on un-doped diamond nanoparticles (5-100 nm in diameter) were conducted in 1.1 mM chloroplatinic acid solution. The electrodeposited Pt nanoparticles were well-dispersed on the facet surfaces of diamond nanoparticles [88,107]. Pt and Ru nanoparticles were chemically deposited on un-doped and boron-doped diamond nanoparticles through the use of NaBH 4 as reducing agent and sodium dodecyl benzene sulfonate as a surfactant [93].…”

Section: Electrocatalystsmentioning

confidence: 99%

“…Diamond nanoparticles with different surface terminations were used for these electrocatalytic oxidation reactions, leading to different oxidation mechanisms [89]. Towards the ability of the electrocatalytic oxidation of methanol, diamond nanoparticles with smaller diameters (e.g., 5 nm) exhibited better electrocatalytic activity than bigger ones (e.g., 100 nm) after the surface of diamond nanoparticles were coated with electrodeposited Pt nanoparticles [88,107]. The application of these Pt modified diamond electrodes in the electrochemical oxidation of hydrogen peroxide was demonstrated [92].…”

Section: Electrocatalystsmentioning

confidence: 99%

Diamond Nanostructures and Nanoparticles: Electrochemical Properties and Applications

Yang

Jiang

2016

Carbon Nanoparticles and Nanostructures

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Macro-sized diamond films have been widely applied as the electrode for electrochemical and electroanalytical applications. Due to the non-uniform doping in diamond, boundary effects, and the varied ratios of graphite to diamond, only averaged electrochemical signals are detected over the full electrode. The studies of diamond electrochemistry at the nanoscale are thus highly required. In this chapter we overview recent progress and achievements about electrochemical properties and applications of diamond nanostructures and nanoparticles. After a brief introduction of the formation of these nanostructures and nanoparticles, electrochemical behavior of diamond nanostructures (e.g., diamond nanotexures, nanowires, networks, etc.) and nanoparticles (undoped, doped nanoparticles) in the presence/ absence of redox probes is summarized. Their electroanalytical (e.g., electrochemical, biochemical sensing, etc.) and electrochemical (e.g., energy storage using capacitors and batteries, electrocatalysis, etc.) applications are shown. Diamond nanoelectrode array is introduced and highlighted as a promising tool to investigate diamond electrochemistry at the nanoscale as well.

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Microwave synthesis and characterization of Pt nanoparticles supported on undoped nanodiamond for methanol electrooxidation

Cited by 29 publications

References 42 publications

Selective Sensing of Bisphenol A and Bisphenol S on Platinum/Poly(diallyl dimethyl ammonium chloride)-diamond Powder Hybrid Modified Glassy Carbon Electrode

Selective Sensing of Bisphenol A and Bisphenol S on Platinum/Poly(diallyl dimethyl ammonium chloride)-diamond Powder Hybrid Modified Glassy Carbon Electrode

Recent Progress in Diamond-based Electrocatalysts for Fuel Cells

Diamond Nanostructures and Nanoparticles: Electrochemical Properties and Applications

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