The Role of H2C2O4 and Na2CO3 as Precipitating Agents on The Physichochemical Properties and Photocatalytic Activity of Bismuth Oxide

Astuti, Yayuk; Andianingrum, Rizka; Arnelli, A.; Haris, Abdul; Darmawan, Adi

doi:10.1515/chem-2020-0013

Cited by 23 publications

(9 citation statements)

References 23 publications

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“…However, the vibrations of C-O ester (1027 cm -1 ), C=O stretching (1686 cm -1 ), -CH3 bending (1363 cm -1 ), CH2-bending (1419 cm -1 ), and C-H sp 3 stretching (2938 and 2828 cm -1 ) [42] from derivative xanthone were not observed due to releasing the mangosteen peel extract form Ag3PO4 surface due to washing treatment during the synthesis. It indicates the extract might act as a precipitating agent of particle size and crystallinity control, similar to the role of H2C2O4 and Na2CO3 for the preparation of bismuth oxide [43].…”

Section: N2mentioning

confidence: 78%

The Enhanced Photocatalytic Properties of Silver Phosphate Synthesized Under Mangosteen Peel Extract Solution

et al. 2021

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The synthesis of silver phosphate (Ag3PO4) photocatalyst has been widely developed for organic pollutant degradation. However, the large particle of this photocatalyst limits the photocatalytic activity. The smaller particle size of the Ag3PO4 photocatalyst was successfully prepared using the starting material of AgNO3 and Na2HPO4.12H2O under mangosteen peel extract solution. The starting materials were dissolved in mangosteen peel extract solutions prepared at the concentration of 1% (w/v). The reaction of silver nitrate and phosphate solution was conducted at room temperature. The samples of pristine Ag3PO4 and Ag3PO4 prepared under mangosteen peel extract were studied using XRD, DRS, SEM, BET, and FTIR. All photocatalytic activities were evaluated using Rhodamine B photooxidation under blue light irradiation (LED, 3 Watt). The results showed that the mangosteen peel extract significantly decreased the particle size, lowered the bandgap energy from 2.12 to 2.00 eV, and increased the crystallinity of Ag3PO4. The interaction of xanthones from mangosteen peel extract solution with silver ion might affect the growth particle of Ag3PO4, and inhibit the agglomeration leading to small particle size, more uniform distribution, high crystallinity, and low bandgap energy. These properties enhanced the photocatalytic activity up to 2.9 times higher compared to the sample without the treatment of mangosteen peel extract.

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Section: N2mentioning

confidence: 78%

The Enhanced Photocatalytic Properties of Silver Phosphate Synthesized Under Mangosteen Peel Extract Solution

et al. 2021

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“…The photocatalytic activity of synthesized bismuth oxide on MO dyes can be determined using decolorization rate calculations through chemical kinetics studies. Generally, the decolorization activity of dyes follows the kinetics of first-order reactions [8,12,[30][31][32] expressed by the formula:…”

Section: Photocatalytic Testmentioning

confidence: 99%

“…Bismuth oxide (Bi2O3) can be synthesized by several methods, including precipitation [8] or deposition [9], solution combustion [10][11][12], hydrothermal [13], and solgel methods [1]. In this study the sol-gel (SG) method was applied with variations in calcination temperatures of 500, 600, and 700 °C.…”

Section: ■ Introductionmentioning

confidence: 99%

Bismuth Oxide Prepared by Sol-Gel Method: Variation of Physicochemical Characteristics and Photocatalytic Activity Due to Difference in Calcination Temperature

et al. 2020

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Research on synthesis of bismuth oxide (Bi2O3) using sol-gel method with varying calcination temperatures at 500, 600, and 700 °C has been done. This study aims to determine the effect of calcination temperature on the characteristics of the obtained products which encompasses crystal structure, surface morphology, band-gap energy, and photocatalytic activity for the decolorization of methyl orange dyes through its kinetic study. Bismuth oxide prepared by sol-gel method was undertaken by dissolving Bi(NO3)3·5H2O and citric acid in HNO3. The mixture was stirred then heated at 100 °C. The gel formed was dried in the oven and then calcined at 500, 600, and 700 °C for 5 h. The obtained products were a pale yellow powder, indicating the formation of bismuth oxide. This is confirmed by the existence of Bi–O and Bi–O–Bi functional groups through FTIR analysis. All three products possess the same mixed crystal structures of α-Bi2O3 (monoclinic) and γ-Bi2O3 (body center cubic), but their morphologies and band gap values are different. The higher the calcination temperature, the larger the particle size and the smaller the band gap value. The accumulative differences in characteristics appoint SG700 to have the highest photocatalytic activity compared to SG600 and SG500 as indicated by its percent degradation value and decolorization rate constant.

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“…Synthesis of bismuth oxide can be conducted by several methods including precipitation [5,11], sol-gel [6], solution combustion [4,12,13] and hydrothermal [14][15][16][17]. In this study, the hydrothermal method was applied to produce bismuth oxide since it has several advantages, such as: precipitant-free, additive-free, no need sophisticated equipment, and low temperature processing, which lead to energy saving and cost effective [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

French Fries-Like Bismuth Oxide: Physicochemical Properties, Electrical Conductivity and Photocatalytic Activity

Astuti

Musthafa

Arnelli

et al. 2021

Bull. Chem. React. Eng. Catal.

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Bismuth oxide synthesis using hydrothermal method has been conducted. This study aims to examine the effect of the hydrothermal reaction time on product characteristics and photocatalytic activity in degrading methyl orange dye. Bismuth oxide synthesis was initiated by dissolving bismuth nitrate pentahydrate (Bi(NO3)3.5H2O) and Na2SO4 in a distilled water and added NaOH gradually. The solution formed was transferred into a Teflon-lined autoclave and heated at 120 °C with time variations of 8–16 h. The formation of bismuth oxide was indicated by the vibrations of the Bi−O−Bi and Bi−O groups and the crystal structure consisting of a-Bi2O3, β-Bi2O3, and g-Bi2O3. In addition, the highest photocatalytic activity can be examined through several factors, such as: content of Bi−O−Bi and Bi−OH groups, crystal structure, band gap values, morphology, and surface area, acquired as a result of the effect of hydrothermal reaction time. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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The Role of H2C2O4 and Na2CO3 as Precipitating Agents on The Physichochemical Properties and Photocatalytic Activity of Bismuth Oxide

Cited by 23 publications

References 23 publications

The Enhanced Photocatalytic Properties of Silver Phosphate Synthesized Under Mangosteen Peel Extract Solution

The Enhanced Photocatalytic Properties of Silver Phosphate Synthesized Under Mangosteen Peel Extract Solution

Bismuth Oxide Prepared by Sol-Gel Method: Variation of Physicochemical Characteristics and Photocatalytic Activity Due to Difference in Calcination Temperature

French Fries-Like Bismuth Oxide: Physicochemical Properties, Electrical Conductivity and Photocatalytic Activity

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