Effects of the Citric Acid Addition on the Morphology, Surface Area, and Photocatalytic Activity of LaFeO3 Nanoparticles Prepared by Glucose-Based Gel Combustion Methods

The influence of glycine, glycerine, ethylene glycol and citric acid fuel and their ratio to NO3- on formation and dispersity of Bi2WO6 nanoparticles prepared by combustion synthesis has been studied. The pure crystalline Bi2WO6 with specific surface area 24,8 m2/g and crystallite size of 28 nm was obtained by using glycerine as fuel at its ratio to NO3- of 0,67. The photocatalytic activity of the prepared Bi2WO6 in degradation of methylene blue depended on its specific surface area of samples and solution pH.

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The effect of different graphene surface area on photocatalytic activity of LaFeO3 nanoparticles

10.1063/1.4968333 ◽

2017 ◽

Cited By ~ 3

Author(s):

Nur Afifah ◽

Rosari Saleh

Keyword(s):

Photocatalytic Activity ◽

Surface Area ◽

Graphene Surface ◽

Lafeo3 Nanoparticles

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Remarkably efficient and stable Ni/Y2O3 catalysts for CO2 methanation: Effect citric acid addition

Applied Catalysis B Environmental ◽

10.1016/j.apcatb.2021.120206 ◽

2021 ◽

pp. 120206

Author(s):

Yingying Li ◽

Yong Men ◽

Shuang Liu ◽

Jinguo Wang ◽

Kang Wang ◽

...

Keyword(s):

Citric Acid ◽

Co2 Methanation ◽

Acid Addition

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Impact of Al doping on a hydrothermally synthesized β-Ga2O3 nanostructure for photocatalysis applications

RSC Advances ◽

10.1039/d1ra00021g ◽

2021 ◽

Vol 11 (13) ◽

pp. 7338-7346

Author(s):

Sunjae Kim ◽

Heejoong Ryou ◽

In Gyu Lee ◽

Myunghun Shin ◽

Byung Jin Cho ◽

...

Keyword(s):

Photocatalytic Activity ◽

Grain Boundary ◽

Redox Potential ◽

Surface Area ◽

Crystal Defect ◽

Oxygen Defect ◽

Al Doping ◽

Photocatalytic Reactions

The photocatalytic activity is correlated with different parameters affecting the photocatalytic reactions; redox potential (RP), surface area (SA), crystal defect (CD), oxygen defect (OD), and grain-boundary induced defect (GD).

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Hydrothermal Synthesis of Nanorods/Nanoparticles TiO2 for Photocatalytic Activity and Dye-sensitized Solar Cell Applications

MRS Proceedings ◽

10.1557/proc-0951-e09-04 ◽

2006 ◽

Vol 951 ◽

Cited By ~ 5

Author(s):

Sorapong Pavasupree ◽

Supachai Ngamsinlapasathian ◽

Yoshikazu Suzuki ◽

Susumu Yoshikawa

Keyword(s):

Photocatalytic Activity ◽

Surface Area ◽

Pore Diameter ◽

Mesoporous Structure ◽

Energy Conversion Efficiency ◽

Bet Surface Area ◽

Average Pore ◽

Dye Sensitized ◽

Prepared Material ◽

20 Nm

ABSTRACTNanorods/nanoparticles TiO2 with mesoporous structure were synthesized by hydrothermal method at 150 °C for 20 h. The samples characterized by XRD, SEM, TEM, SAED, HRTEM, and BET surface area. The nanorods had diameter about 10-20 nm and the lengths of 100-200 nm, the nanoparticles had diameter about 5-10 nm. The prepared material had average pore diameter about 7-12 nm. The BET surface area and pore volume of the sample are about 203 m2/g and 0.655 cm3/g, respectively. The nanorods/nanoparticles TiO2 with mesoporous structure showed higher photocatalytic activity (I3− concentration) than the nanorods TiO2, nanofibers TiO2, mesoporous TiO2, and commercial TiO2 (ST-01, P-25, JRC-01, and JRC-03). The solar energy conversion efficiency (η) of the cell using nanorods/nanoparticles TiO2 with mesoporous structure was about 7.12 % with Jsc of 13.97 mA/cm2, Voc of 0.73 V and ff of 0.70; while η of the cell using P-25 reached 5.82 % with Jsc of 12.74 mA/cm2, Voc of 0.704 V and ff of 0.649.

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The effects of solvent viscosity on the morphology and photocatalytic activity of BiOBr catalysts

Functional Materials Letters ◽

10.1142/s1793604721430062 ◽

2021 ◽

Author(s):

Fengjuan Ge ◽

Jie Zhu ◽

Yan Xu ◽

Jing Li ◽

Xueyang Zhang

Keyword(s):

Photocatalytic Activity ◽

Surface Area ◽

Rhodamine B ◽

Synthesis Method ◽

Degradation Process ◽

High Viscosity ◽

Precipitation Method ◽

Glycerol Solution ◽

Solvent Viscosity ◽

Degradation Tests

BiOBr photocatalysts were prepared by changing the solvent and synthesis method. SEM, XRD and BET characterization shows that the sample prepared in high-viscosity solution by precipitation method has tremella-like microstructure, with smaller size and higher surface area. Among them, the BiOBr prepared in glycerol solution (GR-P) has the highest surface area of 113.8 m2⋅[Formula: see text]. XRD also indicates that the GR-P has much more exposed (110) facets than other samples. The Rhodamine B degradation tests show that the GR-P has the best activity on both deethylation and aromatic ring destruction steps, indicating that the exposed (110) facets promote the degradation process.

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Fabrication of S, N co-doped α-Fe2O3 nanostructures: effect of doping, OH radical formation, surface area, [110] plane and particle size on the photocatalytic activity

RSC Advances ◽

10.1039/c3ra23088k ◽

2013 ◽

Vol 3 (21) ◽

pp. 7912 ◽

Cited By ~ 43

Author(s):

Gajendra Kumar Pradhan ◽

Nruparaj Sahu ◽

K. M. Parida

Keyword(s):

Particle Size ◽

Photocatalytic Activity ◽

Surface Area ◽

Radical Formation ◽

Oh Radical ◽

Co Doped ◽

Effect Of Doping

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Facile synthesis of porous graphene-like carbon nitride nanosheets with high surface area and enhanced photocatalytic activity via one-step catalyst-free solution self-polymerization

Applied Surface Science ◽

10.1016/j.apsusc.2017.11.254 ◽

2018 ◽

Vol 436 ◽

pp. 424-432 ◽

Cited By ~ 9

Author(s):

Shikai Wu ◽

Shengwu Wen ◽

Xinmei Xu ◽

Guozhi Huang ◽

Yifan Cui ◽

...

Keyword(s):

Photocatalytic Activity ◽

Surface Area ◽

Carbon Nitride ◽

High Surface ◽

High Surface Area ◽

Free Solution ◽

Facile Synthesis ◽

Porous Graphene ◽

One Step ◽

Carbon Nitride Nanosheets

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Optimized Synthesis Temperature and Time to Obtain Crystalline Carbon Nitride with Enhanced Photocatalytic Activity for Phenol Degradation

Indonesian Journal of Chemistry ◽

10.22146/ijc.52345 ◽

2020 ◽

Vol 20 (6) ◽

pp. 1392

Author(s):

Leny Yuliati ◽

Mohd Hayrie Mohd Hatta ◽

Siew Ling Lee ◽

Hendrik Oktendy Lintang

Keyword(s):

Photocatalytic Activity ◽

Specific Surface ◽

Band Gap ◽

Surface Area ◽

Carbon Nitride ◽

Phenol Degradation ◽

Synthesis Temperature ◽

Band Gap Energy ◽

Synthesis Time ◽

Gap Energy

In this work, the crystalline carbon nitride photocatalysts were synthesized by an ionothermal technique with varied synthesis temperature of 500, 550, and 600 °C, and synthesis time of 2, 4, and 6 h. Fourier transform infrared spectra showed the successful formation of the prepared carbon nitrides from their characteristic vibration peaks. X-ray diffraction patterns suggested that the same phase of poly(triazine imide) and heptazine could be observed, but with different crystallinity. The optical properties showed that different temperatures and synthesis time resulted in the different band gap energy (2.72–3.02 eV) as well as the specific surface area (24–73 m2 g–1). The transmission electron microscopy image revealed that the crystalline carbon nitride has a near-hexagonal prismatic crystallite size of about 50 nm. Analysis by high-performance liquid chromatography showed that the best photocatalytic activity for phenol degradation under solar light simulator was obtained on the crystalline carbon nitride prepared at the 550 °C for 4 h, which would be due to the high crystallinity, suitable low band gap energy (2.82 eV), and large specific surface area (73 m2 g–1). Controlling both the temperature and synthesis time is shown to be important to obtain the best physicochemical properties leading to high activity.

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