In situ synthesis of ZnO nanostructures on a zinc substrate assisted with mixed cationic/anionic surfactants

Lv, Sa; Wang, Chunxu; Zhou, Tong; Jing, Shengyu; Wu, Yan; Zhao, Chun

doi:10.1016/j.jallcom.2008.09.142

Cited by 11 publications

(8 citation statements)

References 27 publications

(32 reference statements)

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“…There are few studies in which mixture of CTAB and SDS has been applied [ 17 – 20 ]. ZnO nanostructures with the morphology of crooked anomalous nanosheets and very unique aggregated nanosheets have been obtained in the presence of SDS/CTAB surfactants via a mild hydrothermal process and precipitate method, respectively.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Sodium Dodecyl Sulfate (SDS) and Cetyltrimethylammonium Bromide (CTAB) on the Properties of ZnO Synthesized by Hydrothermal Method

Ramimoghadam

Hussein

Taufiq‐Yap

2012

IJMS

223

104

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ZnO nanostructures were synthesized by hydrothermal method using different molar ratios of cetyltrimethylammonium bromide (CTAB) and Sodium dodecyl sulfate (SDS) as structure directing agents. The effect of surfactants on the morphology of the ZnO crystals was investigated by field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) techniques. The results indicate that the mixture of cationic-anionic surfactants can significantly modify the shape and size of ZnO particles. Various structures such as flakes, sheets, rods, spheres, flowers and triangular-like particles sized from micro to nano were obtained. In order to examine the possible changes in other properties of ZnO, characterizations like powder X-ray diffraction (PXRD), thermogravimetric and differential thermogravimetric analysis (TGA-DTG), FTIR, surface area and porosity and UV-visible spectroscopy analysis were also studied and discussed.

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Section: Introductionmentioning

confidence: 99%

The Effect of Sodium Dodecyl Sulfate (SDS) and Cetyltrimethylammonium Bromide (CTAB) on the Properties of ZnO Synthesized by Hydrothermal Method

Ramimoghadam

Hussein

Taufiq‐Yap

2012

IJMS

223

104

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“…Chen et al used hexadecyl (trimethyl)azanium bromide and sodium laurate (SL) as cationic and anionic surfactants to control the pore sizes of mesopores precisely [28]. Lv et al reported a one-step hydrothermal process to prepare different morphologies of ZnO nanostructures directed by mixed cationic/anionic surfactants [29]. However, to the best of our knowledge, the synthesis of calcium carbonate with the help of mixed cationic/anionic surfactants has not been reported.…”

Section: Introductionmentioning

confidence: 99%

Controlling the polymorph and morphology of CaCO3 crystals using surfactant mixtures

Chen

Nan

2011

Journal of Colloid and Interface Science

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“…To pursue superior gas-sensitive properties, researchers are keen on realizing a controllable synthesis of materials with oriented or tailored structures. Taking hydrothermal reaction, which is an eco-friendly and time- and cost-effective method suitable for mass production, for example, a surfactant additive is regarded to be more efficient to intensify the crystal anisotropy and facilitate its directional growth compared with hydrothermal temperature and time. , In this process, surfactants commonly serve as capping agents. , Anionic sodium dodecyl sulfate (SDS), sodium dodecyl benzene sulfonate (SDBS), cationic cetyltrimethyl ammonium bromide (CTAB), nonionic PEG, polyvinylpyrrolidone (PVP), or their complexes are most frequently used.…”

Section: Introductionmentioning

confidence: 99%

ZnO Nanowires with Increasing Aspect Ratios for Room-Temperature NO₂ Gas Sensing

Zhang

Xia

Zhang

et al. 2022

ACS Appl. Nano Mater.

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The oriented design and controllable preparation of sensing materials are extremely important and meaningful attributes that not only contribute to the realization of desirable gas-sensing properties but also facilitate the validation of the sensing mechanism. Because of the spatial effect derived from micelle assemblies formed by surfactant molecules under certain circumstances, radial growth of ZnO crystals is successfully suppressed in this work, which leads to the formation of ZnO nanowires with a larger aspect ratio. Furthermore, anionic surfactants of the same series but with longer carbon chains were utilized to create a greater spatial effect, which leads to more serious radial inhibition and, eventually, ever-increasing aspect ratios for the products. Except for a change in morphology, multiple characterization methods, such as XRD, FT-IR, and XPS, confirm the in situ doping/functionalization of surfactant molecules into ZnO crystals during the preparation process, which, on one hand, provide important evidence for the analysis of the product formation mechanism, and, on the other hand, serve as active sites for light-enhanced sensing. In subsequent gas-sensing tests, all surfactant−induced ZnO samples were applied as sensing materials to detect NO 2 at room temperature (RT, 25 °C) in the dark, which show an increased response with increasing aspect ratio. In particular, at RT, the response toward 10 ppm NO 2 of C16−ZnO with the highest aspect ratio reaches 271% in the dark, which is 24.64 times higher than that of pure ZnO without surfactant-assisted synthesis. Under UV irradiation, the response of C16−ZnO toward 10 ppm NO 2 is further enhanced to 602% at RT, and this magnitude (2.22 times) of response improvement compared with that in the dark is maximal among all surfactant−induced ZnO samples. Moreover, the response/recovery time of C16−ZnO toward 10 ppm NO 2 at RT is found to be drastically decreased from 393/953 s in the dark to 58/91 s under UV irradiation.

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In situ synthesis of ZnO nanostructures on a zinc substrate assisted with mixed cationic/anionic surfactants

Cited by 11 publications

References 27 publications

The Effect of Sodium Dodecyl Sulfate (SDS) and Cetyltrimethylammonium Bromide (CTAB) on the Properties of ZnO Synthesized by Hydrothermal Method

The Effect of Sodium Dodecyl Sulfate (SDS) and Cetyltrimethylammonium Bromide (CTAB) on the Properties of ZnO Synthesized by Hydrothermal Method

Controlling the polymorph and morphology of CaCO3 crystals using surfactant mixtures

ZnO Nanowires with Increasing Aspect Ratios for Room-Temperature NO₂ Gas Sensing

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In situ synthesis of ZnO nanostructures on a zinc substrate assisted with mixed cationic/anionic surfactants

Cited by 11 publications

References 27 publications

The Effect of Sodium Dodecyl Sulfate (SDS) and Cetyltrimethylammonium Bromide (CTAB) on the Properties of ZnO Synthesized by Hydrothermal Method

The Effect of Sodium Dodecyl Sulfate (SDS) and Cetyltrimethylammonium Bromide (CTAB) on the Properties of ZnO Synthesized by Hydrothermal Method

Controlling the polymorph and morphology of CaCO3 crystals using surfactant mixtures

ZnO Nanowires with Increasing Aspect Ratios for Room-Temperature NO2 Gas Sensing

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Product

Resources

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ZnO Nanowires with Increasing Aspect Ratios for Room-Temperature NO₂ Gas Sensing