Synthesis and properties of GaO2H nanorods

Xiao, Hongdi; Ma, Hongjuan; Xue, Chengshan; Hu, Wenrong; Ma, Jin; Zong, Fujian; Zhang, Xijian; Jin, Feng

doi:10.1016/j.matlet.2004.08.020

Cited by 14 publications

(8 citation statements)

References 12 publications

(11 reference statements)

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“…Metal oxyhydroxides are useful in the fields of catalysis, adsorption, electrochemistry and fluorescence materials [2][3][4][5]. A pioneering work made by Tas et al [6] on the synthesis of zeppelin and rod like GaOOH nano crystals was followed by several publications introducing different synthetic procedures [7][8][9][10][11][12][13][14][15][16][17]. However, reports on simple phase selective synthesis of GaOOH without using any templates or surfactants are scarce.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of self-assembled α-GaOOH microrods and 3D hierarchical architectures with flower like morphology and their conversion to α-Ga2O3

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Synthesis of self-assembled α-GaOOH microrods and 3D hierarchical architectures with flower like morphology and their conversion to α-Ga2O3

et al. 2015

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“…Huang et al 5 synthesized well-defined spindle-like GaOOH nanoparticles by laser ablation of Ga metal in aqueous solutions in the presence of cationic cetyltrimethylammonium bromide (CTAB) surfactant. Ma et al 6 synthesized GaOOH nanorods from mechanically ball-milled GaN powders which took a high state of activation and reacted with water. Zhang's group 7 reported that GaOOH nanorods were prepared through a facile large-scale hydrothermal process from GaCl 3 -H 2 O-NaOH solutions under suitable pH conditions.…”

Section: Introductionmentioning

confidence: 99%

Well Crystallized α‐GaOOH Nanocrystals Synthesized through Hydrothermal Routes and Their Properties

et al. 2009

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A facile hydrothermal process involving Ga(NO 3 ) 3 •H 2 O•NaN 3 solutions led to the formation of α-GaOOH nano-platelets. X-ray diffraction (XRD) pattern revealed that the synthesized samples belonged to an orthorhombic crystal structure with lattice constants a＝0.4510 nm, b＝0.9750 nm and c＝0.2965 nm. Transmission electron microscopy (TEM) studies showed that α-GaOOH displayed the morphologies of an eccentric platelet-like structure with 60-120 and 200-300 nm in the short and long axes, respectively. The average thickness of products was about 70 nm through scanning electron microscopy (SEM) images. The ultraviolet absorption of the samples was at 214 nm. The prepared α-GaOOH nano-platelets exhibited a broad emission band from 220 to 400 nm with a maximum at 343 nm under short UV excitation of 200 nm. Fourier transform infrared (FTIR) spectrum confirmed the existence of Ga 2 O and Ga -OH bending modes. A possible mechanism for the formation of α-GaOOH nano-platelets was discussed briefly.

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“…With the increase of the hydrothermal temperature and pressure, GaCl 3 molecules in the hydrothermal solution gradually react with H 2 O forming hydroxylate to GaOOH nuclei (GaCl 3 +2H 2 O=GaOOH+3HCl). As the concentration of GaOOH increases to supersaturation state, the oxyhydroxide recrystallizes into quasi-one-dimensional nanocrystals probably under an inducement effect from the inherent crystal structure of orthorhombic GaOOH structure [4,8,13]. According to the solution crystalline growth theory, the diameter of the GaOOH rods increases with the increase of the hydrothermal temperature and growth time.…”

Section: Methodsmentioning

confidence: 99%

“…GaOOH nanoplatelets were synthesized by a hydrothermal process involving Ga(NO 3 ) 3 ·H 2 O·NaN 3 solutions [7]. Nanoscale or submicron GaOOH rods have been synthesized by different methods, such as ball-milled GaN powders [8], hydrothermal treatment of containing Ga starting materials by the addition of different surfactants [9][10][11][12]. However, surfactants are often required in order to generate GaOOH structures with submicron or nanoscale size which will cause higher cost and a more complicated purification procedure.…”

Section: Introductionmentioning

confidence: 99%

Large‐scale synthesis of submicron gallium oxide hydrate rods and their optical and electrochemical properties

Li¹,

Yang

Dong

et al. 2010

Cryst. Res. Technol.

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Key words submicron gallium oxide hydrate rods, large-scale synthesis, optical and electrochemical properties, structure.Large-scale submicron gallium oxide hydrate (GaOOH) rods have been synthesized by a simple hydrothermal process and their optical, electrochemical properties have been analyzed. The diameter of the GaOOH nanorods with good single crystalline structure is 80-800 nm and length of less than 4 μm. The tips of the GaOOH structures are composed of nanorods with the diameter of less than 10 nm and length of more than 100 nm. Hydrothermal temperature, time and the Ga-contained starting materials have important roles on the formation and growth of submicron GaOOH rods. The submicron GaOOH rods exhibit good UV-vis absorption ability. The electrochemical analysis shows that the submicron GaOOH rods have good detecting ability for ascorbic acid and cysteine in PBS and NaCl solution exhibiting promising potential for electrochemical sensing application.

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Synthesis and properties of GaO2H nanorods

Cited by 14 publications

References 12 publications

Synthesis of self-assembled α-GaOOH microrods and 3D hierarchical architectures with flower like morphology and their conversion to α-Ga2O3

Synthesis of self-assembled α-GaOOH microrods and 3D hierarchical architectures with flower like morphology and their conversion to α-Ga2O3

Well Crystallized α‐GaOOH Nanocrystals Synthesized through Hydrothermal Routes and Their Properties

Large‐scale synthesis of submicron gallium oxide hydrate rods and their optical and electrochemical properties

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