Large scale and uniform La(OH)3 nanorods prepared by template-free pulsed electrodeposition method

Khosrow-pour, Fatemeh; Aghazadeh, Mustafa; Dalvand, Somayeh; Sabour, Behrouz

doi:10.1016/j.matlet.2013.03.144

Cited by 12 publications

(3 citation statements)

References 21 publications

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“…Further, the bands at 1483 cm -1 and 1440 cm -1 are attributed to asymmetric stretching mode of the C-O bond [22]. The absorption bands at 858 and 657 cm -1 are assigned to bending out of plane vibrations and La-O stretching vibration, respectively [27].…”

Section: Identi Cation Of Chemical Bonding By Ftirmentioning

confidence: 97%

Assessment of triboelectricity in colossal-surface-area-lanthanum oxide nanocrystals synthesized via low-temperature hydrothermal process

Meti

Sagar

Rahman

et al. 2021

J Mater Sci: Mater Electron

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Triboelectric nanogenerators (TENGs) have marked their applications in various elds, most importantly, in medical devices. The electrical output of the TENGs mainly concentrated on parameters such as electrode separation distance, applied mechanical pressure, surface charge density, and overlapping surface-area. The surface-area of the active layer in TENGs plays a crucial role. Given this, the present contribution is the rst report on the utilization of lanthanum oxide (La 2 O 3 ) as an active material with a large surface-area (~72.33 m 2 /g) in TENGs. The nanocrystals of La 2 O 3 have been successfully embedded into TENGs architecture through a high-quality screen-printed lm with a Te on-counter surface. The in-house test-rig of TENGs resulted in an output open-circuit voltage of 120 V and a shortcircuit current of 23.7 μA. Further, the maximum power density is 7.125 W/m 2 at an external load resistance of 30 MΩ. These results suggest that La 2 O 3 is a suitable contender in various self-powered devices.

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Section: Identi Cation Of Chemical Bonding By Ftirmentioning

confidence: 97%

Assessment of triboelectricity in colossal-surface-area-lanthanum oxide nanocrystals synthesized via low-temperature hydrothermal process

Meti

Sagar

Rahman

et al. 2021

J Mater Sci: Mater Electron

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“…The band centred on 3606 cm −1 is assigned for stretching mode of OH − in lanthanum hydroxide [32,33]. The bands at 3455 cm −1 and 1640 cm −1 are 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64attributed to the hydroxyl groups in water [32,34] Voltage of 10 V …”

Section: Ftir Spectroscopy Analyses Of the As-deposited Layersmentioning

confidence: 99%

Experimental investigation on the concentration and voltage effects on the characteristics of deposited magnesium–lanthanum powder

et al. 2015

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Phone: +33 248 484 065 HighlightsWe synthetize Mg-La powders by means of an electrodeposition process.We characterize Mg-La powders using EDS, SEM, XRD and FTIR techniques. EDS analyses indicate the presence of three elements (Mg, La and O).The two phases, Mg(OH) 2 and La(OH) 3 are identified in specimens.Concentration and voltage effects are investigated using a design of experiments. AbstractIn this paper, magnesium-lanthanum powders were synthesized by an electrodeposition technique using an aqueous solution, based on magnesium chloride hexahydrate and showed the existence of two distinct phases in the obtained deposits which are magnesium hydroxide (Mg(OH) 2 ) and lanthanum hydroxide (La(OH) 3 ). FTIR analyses confirm the presence of the two phases identified in XRD diffractograms and they can be exhibited by clear peaks. In the studied ranges of voltage and La weight percentage, their peak transmittances have non-monotonic behaviors. A design of experiments was used to determine the influence of these two processing parameters and their interaction on the products formation. The parameters effects were ranked as follow: the first was the voltage then the interaction between the two parameters and finally the La content.

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“…[20][21][22][23][24][25] The growth rate and surface morphology can be well controlled by deposition potentials, current densities, deposited time and salt concentrations. Recently, considerable research has been dedicated to the use of cathodic electrodepostion to form self-organized semiconductor structures of materials such as ZnO, 26,27 BiVO 4 , 28 La(OH) 3 [29][30][31][32] and BiOCl. 33 Up to date, powder photocatalysts have several inevitable weaknesses among the researches of photocatalysis in aqueous solution, including the separation of powder from system after reaction, high electron-hole recombination rate of catalyst which reduces the photocatalystic activity, and the limitation of the photoefficiency due to the slow interfacial electron transfer.…”

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confidence: 99%

Electrochemical Synthesis of Photoelectrocatalytic Thin Films of Hexagonal BiPO₄Nanorods

Qiu

Zeng

et al. 2015

J. Electrochem. Soc.

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Hexagonal BiPO 4 nanorods thin films with remarkable photoelectrocatalytic (PEC) performance were successfully fabricated on FTO substrates via cathodic electrodeposition. Chronoamperometry, linear sweep voltammertry (LSV) and electrochemical impedance spectroscopy (EIS) were used to study the photoelectrochemical properties of these materials. The photoelectrocatalytic capability was evaluated by the degradation of methyl blue (MB). The film deposited in 40 min has the best catalytic activity and good stability with the 30 h degrading experiment. The photocurrent was increasing because the concentration of MB was being degrading. The CV analysis which reveals a potential shift and the increasing anodic and cathodic peak currents with increasing scan rate proves a diffusion-controlled process. The hydroxyl radicals are the main active species that can oxidize the adsorbed organic pollutants. Up to date, powder photocatalysts have several inevitable weaknesses among the researches of photocatalysis in aqueous solution, including the separation of powder from system after reaction, high electron-hole recombination rate of catalyst which reduces the photocatalystic activity, and the limitation of the photoefficiency due to the slow interfacial electron transfer. Since the report of the HondaFujishima effect on TiO 2 electrodes under UV light, 34 photoelectrocatalytic (PEC) oxidation has been regarded as an ideal means of curbing environmental organic dyes pollution in aqueous solution using different semiconductor electrodes. [35][36][37][38][39] Moreover, the applied potential can enhance charge separation and facilitate the transfer of photogenerated electron. In our previous work, the BiPO 4 film prepared by hydrothermal process has performed remarkable photoelectrocatalytic activity. 40 However, a more facile way to synthesize more stable film still needs to be explored.In this paper, the BiPO 4 nanorods were first synthesized by a one-step cathodic electrodepostion approach on FTO substrates from precursor solution. Structure, morphology and the electrochemical performance were characterized as well. The photoelectrocatalytic activity was evaluated by the degradation of MB. ExperimentalElectrochemical deposition.-All chemical reagents were of analytical purity without further purification. All electrochemical dez E-mail: tzhangym@jnu.edu.cn position experiments were performed with a HDV-7C transistor potentiostatic apparatus connected to a three-electrode cell. A graphite rod was used as the auxiliary electrode. Fluorine doped SnO 2 (FTO) coated glass (5.0×4.0 cm 2 ) with a sheet resistance of 10 was used as the working electrode which was connected to the cell with a double salt bridge system. An Hg/Hg 2 Cl 2 electrode was used as the reference electrode. The FTO substrate was cleaned ultrasonically in ethanol, distilled water and 10% HNO 3 , and then rinsed in distilled water again before electrodeposition. Solution for electrodepositing the BiPO 4 nanorods thin films were prepared by dissolving 10 mM Bi(NO ...

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Large scale and uniform La(OH)3 nanorods prepared by template-free pulsed electrodeposition method

Cited by 12 publications

References 21 publications

Assessment of triboelectricity in colossal-surface-area-lanthanum oxide nanocrystals synthesized via low-temperature hydrothermal process

Assessment of triboelectricity in colossal-surface-area-lanthanum oxide nanocrystals synthesized via low-temperature hydrothermal process

Experimental investigation on the concentration and voltage effects on the characteristics of deposited magnesium–lanthanum powder

Electrochemical Synthesis of Photoelectrocatalytic Thin Films of Hexagonal BiPO₄Nanorods

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Large scale and uniform La(OH)3 nanorods prepared by template-free pulsed electrodeposition method

Cited by 12 publications

References 21 publications

Assessment of triboelectricity in colossal-surface-area-lanthanum oxide nanocrystals synthesized via low-temperature hydrothermal process

Assessment of triboelectricity in colossal-surface-area-lanthanum oxide nanocrystals synthesized via low-temperature hydrothermal process

Experimental investigation on the concentration and voltage effects on the characteristics of deposited magnesium–lanthanum powder

Electrochemical Synthesis of Photoelectrocatalytic Thin Films of Hexagonal BiPO4Nanorods

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Electrochemical Synthesis of Photoelectrocatalytic Thin Films of Hexagonal BiPO₄Nanorods