scholarly journals Zn-Al LAYERED DOUBLE HYDROXIDE AS HOST MATERIAL FOR SUNSCREEN COMPOUND OF p-AMINOBENZOIC ACID

2010 ◽  
Vol 7 (1) ◽  
pp. 1-4 ◽  
Author(s):  
Roto Roto ◽  
Iqmal Tahir ◽  
Mustofa Mustofa
Keyword(s):  
Layered Double Hydroxide ◽  
Room Temperature ◽  
Interlayer Space ◽  
Uv Light ◽  
Structural Formula ◽  
Host Material ◽  
Molar Ratio ◽  
Aminobenzoic Acid ◽  
Protection Factor ◽  
Double Hydroxide

Zn-Al layered double hydroxide can be used as host material for UV active compound p-aminobenzoic acid (PABA), which is having capability to block UV light of sunlight. The formation of Zn-Al-PABA was best developed in which the nucleation process was done at room temperature and followed by hydrothermal treatment at 100 oC.   To make a better product, the molar ratio of Zn to Al to PABA was adjusted to 3:1:1. From the elemental analysis and the content of PABA, it was observed that the product has structural formula of Zn0,745Al0.254(OH)1.650(PABA)0.349. 0.684H2O. The particle size of the powder as estimated using SEM was in the range 100-200 nm. FTIR and XRD proved that the p-amino benzoate ion occupied the interlayer space. This material is expected to have high sun protection factor (SPF).   Keywords: layered double hydroxide, sunscreen, p-amino benzoic acid, nanoparticle

Enhanced Heck reaction on flower-like Co(Mg or Ni)Al layered double hydroxide supported ultrafine PdCo alloy nanocluster catalysts: the promotional effect of Co

2019 ◽  
Vol 48 (48) ◽  
pp. 17741-17751 ◽  
Author(s):  
Jin Li ◽  
Ying Song ◽  
Yajuan Wang ◽  
Hui Zhang
Keyword(s):  
Layered Double Hydroxide ◽  
Heck Reaction ◽  
Molar Ratio ◽  
Promotional Effect ◽  
Double Hydroxide

A series of PdCo alloy nanocluster (NC) catalysts x-PdCor/Co(Mg or Ni)Al-LDH (x: Pd loading, r: Co/Pd molar ratio) were synthesized by immobilizing ultrafine PdCor-PVP NCs on flower-like layered double hydroxide (LDH) supports.

scholarly journals Investigation of the electrochemical and photoelectrochemical properties of Ni–Al LDH photocatalysts

2016 ◽  
Vol 18 (20) ◽  
pp. 13811-13819 ◽  
Author(s):  
Shoji Iguchi ◽  
Soichi Kikkawa ◽  
Kentaro Teramura ◽  
Saburo Hosokawa ◽  
Tsunehiro Tanaka
Keyword(s):  
Layered Double Hydroxide ◽  
Uv Light ◽  
Light Irradiation ◽  
Photoelectrochemical Properties ◽  
Uv Light Irradiation ◽  
Double Hydroxide

Layered double hydroxide (LDH) photocatalysts, including Ni–Al LDH, are active for the photocatalytic conversion of CO2 in water under UV light irradiation.

scholarly journals Self-assembly of Ni–Fe layered double hydroxide at room temperature for oxygen evolution reaction

2020 ◽  
Vol 6 ◽  
pp. 248-254
Author(s):  
Seong Hyun Kim ◽  
Yoo Sei Park ◽  
Chiho Kim ◽  
Il Yeong Kwon ◽  
Jooyoung Lee ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Oxygen Evolution Reaction ◽  
Self Assembly ◽  
Room Temperature ◽  
Double Hydroxide

scholarly journals Boron Removal Using Li-Al-OH Layered Double Hydroxide Prepared by One-Step Mechanochemical Approach

2018 ◽  
Author(s):  
Jingjing Tian ◽  
Jun Qu ◽  
Lei Wan ◽  
Qiwu Zhang ◽  
Huimin Gao
Keyword(s):  
Adsorption Capacity ◽  
Layered Double Hydroxide ◽  
Physical Adsorption ◽  
Molar Ratio ◽  
Mechanochemical Reaction ◽  
Boron Uptake ◽  
Dry Grinding ◽  
One Step ◽  
Double Hydroxide ◽  
Boron Adsorption

In this study, Li-Al-OH layered double hydroxide (LDH), which was prepared by solvent-free one-step mechanochemical reaction of LiOH and Al(OH)3, was applied to remove boron from aqueous solution. Dry-grinding for 3 h at a rotational speed of 500 rpm, Li/Al molar 1/2 was the optimum condition to prepare highly crystalline of Li-Al LDH phase with no evident impure phases. Two milling products with Li/Al molar ratio at 1/2 and 2/2 were evaluated for boron adsorption. The results confirmed that Li/Al molar ratio 2/2 sample showed high boron adsorption capacity due to the physical adsorption of Li-Al-OH LDH and chemical synergism of phase gel Al(OH)3. The adsorption isotherms, described by the Langmuir model, indicated maximum monolayer boron uptake capacity 45.45 mg/g, implying competitive adsorption capacity of the material in our experiment.

scholarly journals Photodecolourization of congo red dye in presence of Ni3+ layered double hydroxide

2021 ◽  
Vol 30 ◽  
pp. 02010
Author(s):  
Irina Ryltsova ◽  
Evgenia Tarasenko ◽  
Olga Lebedeva
Keyword(s):  
Layered Double Hydroxide ◽  
Congo Red ◽  
Uv Light ◽  
Order Kinetic ◽  
X Ray ◽  
Congo Red Dye ◽  
Order Kinetic Model ◽  
Co Precipitation ◽  
Red Dye ◽  
Double Hydroxide

Layered double hydroxide containing Ni3+ (Mg/AlNi-LDH) was successfully synthesized by co-precipitation in an oxidizing media. The resulted product was characterized using X-ray diffraction, wavelength dispersive X-ray fluorescence spectrometry. The activity of Mg/AlNi-LDH in the process of photodegradation of Congo red dye using UV light irradiation was evaluated. The initial rate of photodegradation of the dye in the presence of LDH is 1.6 times higher than that of UV irradiated solution. The kinetic data obtained for photodegradation process can be adequately described by pseudo-first-order kinetic model. The presence of Mg/AlNi – LDH leads to increased photodegradation yield compared to destruction only by UV irradiation.

scholarly journals Expanded graphite/NiAl layered double hydroxide nanowires for ultra-sensitive, ultra-low detection limits and selective NOx gas detection at room temperature

RSC Advances ◽  
2019 ◽  
Vol 9 (16) ◽  
pp. 8768-8777 ◽  
Author(s):  
Xueying Zhang ◽  
Muhammad Ikram ◽  
Zhi Liu ◽  
Lei Teng ◽  
Jialing Xue ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
Room Temperature ◽  
Detection Limits ◽  
Expanded Graphite ◽  
Gas Detection ◽  
Double Hydroxide

Expanded graphite/NiAl-LDH nanowires for ultra-sensitive, ultra-low detection limits and selective NOx gas detection at room temperature.

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