Rapid microwave-assisted synthesis of ball-in-ball CuO microspheres and its application as a H2O2 sensor

Wang, Fengxian; Kalam, Abul; Chang, Ling; Xie, Dong; Al-Shihri, Ayed S.; Du, Gaohui

doi:10.1016/j.matlet.2012.10.058

Cited by 16 publications

(4 citation statements)

References 18 publications

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“…Owing to their unique physical/chemical properties, HoMSs have been widely functionalized and applied to broad applications, such as lithium ion batteries, solar cells, photocatalysis, sensors, supercapacitors, and drug delivery . Well understanding of geometric effects on properties may promote the rapid development of HoMSs in practical applications.…”

Section: Geometric Effect On Application Performance Of Homssmentioning

confidence: 99%

Sequential Templating Approach: A Groundbreaking Strategy to Create Hollow Multishelled Structures

et al. 2018

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Thanks to their distinguished properties such as optimized specific surface area, low density, high loading capacity, and sequential matter transfer and storage, hollow multishelled structures (HoMSs) have attracted great interest from scientists in broad fields, including catalysis, drug delivery, solar cells, supercapacitors, lithium‐ion batteries, electromagnetic wave absorption, and sensors. However, traditional synthesis methods such as soft‐templating and hierarchical self‐assembly methods can hardly realize the controllable synthesis of HoMSs, thus limiting their development and application. Here, the development process of HoMSs is first succinctly reviewed and the shortcomings of the traditional synthesis method are concluded. Subsequently, the sequential templating approach, which shows great generality for the synthesis of HoMSs with controllable composition and geometry configuration and exhibits remarkable effect on the scientific research field, is introduced. The basic material science and chemical reaction mechanism involved in the synthesis and manipulation of HoMSs using the sequential templating approach are then explained in detail. In addition, the effect of the geometric characteristics of HoMSs on their application properties is highlighted. Finally, the current challenges and future research directions of HoMSs are also suggested.

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Section: Geometric Effect On Application Performance Of Homssmentioning

confidence: 99%

Sequential Templating Approach: A Groundbreaking Strategy to Create Hollow Multishelled Structures

et al. 2018

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“…As the irradiation temperature increases above 250 °C, additional peaks corresponding to CuO appear, whereas the Cu 2 (OH) 3 NO 3 peaks disappear, which can be attributed to the thermal decomposition of Cu 2 (OH) 3 NO 3 to CuO, HNO 3 , and H 2 O, and then, HNO 3 resolves into NO 2 , O 2 , and H 2 O . This means solid and amorphous spheres are obtained in the initial stage ,. The observed main diffraction peaks at 43.3°, 50.5°, and 74.2°, which corresponded to the characteristic facets of (1 1 1), (2 0 0), and (2 2 0) of active crystalline Cu (JCPDS 65‐9026), and the additional diffraction peaks of Cu 2 O (JCPDS 05‐0667) at 36.4°, 52.5°, and 61.3° are prominent when the temperature is elevated to 300 °C.…”

Section: Resultsmentioning

confidence: 94%

Influence of Microwave Irradiation on the Structural Properties of Carbon‐Supported Hollow Copper Nanoparticles and Their Effect on the Synthesis of Dimethyl Carbonate

Ren

Hao

et al. 2016

ChemCatChem

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Novel activated carbon (AC)‐supported highly dispersed hollow Cu nanoparticles (NPs) (Cu/AC) with exposed {1 1 1} facets have been prepared by microwave irradiation for the synthesis of dimethyl carbonate (DMC). In particular, Cu NPs with a large cavity diameter of 35 nm are formed after irradiation from room temperature to 360 °C within a mere 8 min without additional irradiation, thus benefiting from the rapid heating of the microwave procedure. In this study, an Ostwald ripening mechanism is proposed. DFT calculations are consistent with the analysis of CO temperature‐programmed desorption, which found that Cu(1 1 1) facets are more favorable for the weak adsorption of CO, which supports the formation of DMC. The as‐prepared catalysts exhibit the highest DMC formation rate in terms of turnover frequency and 100 % selectivity for DMC can be achieved. The large surface area of the hollow Cu NPs and the exposed {1 1 1} crystal planes are highlighted as being responsible for the excellent catalytic rate and superior selectivity, respectively.

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“…These analytical parameters for the proposed modified electrode are comparable or better than the results recently reported for H 2 O 2 determination at the surface of fabricated modified electrodes. [34][35][36][37][38][39][40][41]…”

Section: Amperometric Detection Of H 2 O 2 At the Modified Electrodementioning

confidence: 99%

Acriflavine immobilized onto polyethyleneimine-wrapped carbon nanotubes/gold nanoparticles as an eletrochemical sensing platform

Azadbakht

Abbasi

2016

J Chem Sci

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Multi-walled carbon nanotubes wrapped by polyethyleneimine (PEI) and functionalized with a carboxylic acid group (CNT-COOH) were deposited with gold nanoparticles (AuNPs) which has been utilized as a platform to immobilize poly(acriflavine)(PAF) and used as modified electrode (AuNPs/PEI/CNT-COOH/PAF). Electrocatalytic reduction of hydrogen peroxide(H 2 O 2) on the surface of the modified electrode was investigated by cyclic voltammetry and electrochemical impedance spectroscopy (EIS) methods. The cyclic voltammetric results indicated the ability of modified Au electrode to catalyze the reduction of H 2 O 2. AuNPs/PEI/CNT-COOH nanocomposite combined the advantages of PEI, well dispersed CNT-COOH and in situ formed AuNPs, endowed with high stability to the enzyme-free sensor.

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Rapid microwave-assisted synthesis of ball-in-ball CuO microspheres and its application as a H2O2 sensor

Cited by 16 publications

References 18 publications

Sequential Templating Approach: A Groundbreaking Strategy to Create Hollow Multishelled Structures

Sequential Templating Approach: A Groundbreaking Strategy to Create Hollow Multishelled Structures

Influence of Microwave Irradiation on the Structural Properties of Carbon‐Supported Hollow Copper Nanoparticles and Their Effect on the Synthesis of Dimethyl Carbonate

Acriflavine immobilized onto polyethyleneimine-wrapped carbon nanotubes/gold nanoparticles as an eletrochemical sensing platform

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