scholarly journals ZnCr/C Layered double hydroxide: Synthesis, Characterization and photocatalytic application on Methylene blue removal.

2021 ◽  
Author(s):  
Maimuna ZAREWA ◽  
Abdulfatah MUHAMMAD
Keyword(s):  
Methylene Blue ◽  
Layered Double Hydroxide ◽  
Photocatalytic Application ◽  
Methylene Blue Removal ◽  
Double Hydroxide

scholarly journals Tuning the structural properties of cadmium–aluminum layered double hydroxide for enhanced photocatalytic dye degradation

RSC Advances ◽  
2020 ◽  
Vol 10 (70) ◽  
pp. 43066-43074
Author(s):  
Daniel Saliba ◽  
Salah Eddin El Jamal ◽  
Antranik Jonderian ◽  
Manal Ammar ◽  
Mohamad Hmadeh ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Structural Properties ◽  
Layered Double Hydroxide ◽  
Dye Degradation ◽  
Hierarchical Structures ◽  
Reaction Diffusion ◽  
Photocatalytic Dye Degradation ◽  
Double Hydroxide

Hierarchical structures of Cd Al LDH of various cationic ratios of Cd : Al are successfully synthesized via the reaction diffusion framework. The obtained microspheres are investigated for the photocatalytic degradation of methylene blue.

Surface induced growth of ZIF-67 at Co-layered double hydroxide: Removal of methylene blue and methyl orange from water

2020 ◽  
Vol 190 ◽  
pp. 105564 ◽  
Author(s):  
Muhammad Altaf Nazir ◽  
Naseem Ahmad Khan ◽  
Chao Cheng ◽  
Syed Shoaib Ahmad Shah ◽  
Tayyaba Najam ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Methyl Orange ◽  
Layered Double Hydroxide ◽  
Double Hydroxide

Surface Modification of Synthesized Layered Double Hydroxide [LDH] for Methylene Blue Dye Removal in Textile Industry via Photocatalytic Activity under Visible Light

2017 ◽  
Vol 46 ◽  
pp. 135-147 ◽  
Author(s):  
K. Gohatre Omdeo ◽  
Vasudeo Rane Ajay ◽  
Kanny Krishnan ◽  
V.K. Abitha ◽  
Nikesh Samarth ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Layered Double Hydroxide ◽  
Layered Compounds ◽  
Layered Compound ◽  
Ammonium Bromide ◽  
X Ray ◽  
Surface Modified ◽  
Double Hydroxide

Layered double hydroxides (abbreviated as LDHs) are one of the nanoordered layered compounds. The importance of layered compound is based on their ability to retain chemical species with electrical charges compatible to those of the layers. In this study we have reported the synthesis of nanosized layered double hydroxide (LDH) by co-precipitation method using two different surfactants as cetyl trimethyl ammonium bromide (CTAB) and octadecyl trimethyl ammonium bromide (ODTMA) having different critical micelle concentration (CMC) /chain length and its comparative results on calcined surface modified LDH (CS-LDH). The structure of surface modified layered double hydroxide (CS-LDH) synthesized is unique and has important advantages to the photocatalytic activity. LDH has significant number of application due to their structural, chemical properties etc., these compounds can be used as catalyst, adsorbents, anion exchanger. The photocatalytic activity of prepared surface modified CS-LDH was tested on degradation of the methylene blue (MB) dye in an aqueous solution. The surface characteristics of LDH and CS-LDH were examined using Energy Dispersive X-ray (EDX), Scanning Electron Microscopy (SEM), X-ray diffraction (XRD) and UV-Visible spectrophotometer for Photocatalytic activity under visible light using MB dye. It was observed that highly exfoliated and basal spacing in CS-LDH-ODTMA which enhanced photocatalytic activity (Approx. 60% degradation) than that of comparison to CS-LDH-CTAB (Approx. 32% degradation).

scholarly journals Mg-Cr Layered Double Hydroxide Intercalated Oxalic Anion to Remove Cationic Dye Solutions: Rhodamine B and Methylene Blue

2020 ◽  
Vol 9 (2) ◽  
pp. 383-391
Keyword(s):  
Methylene Blue ◽  
Adsorption Capacity ◽  
Layered Double Hydroxide ◽  
Rhodamine B ◽  
Physical Adsorption ◽  
Dye Adsorption ◽  
Kinetic Studies ◽  
Economic Feasibility ◽  
Order Kinetic ◽  
Double Hydroxide

A MgCr-based layered double hydroxide (LDH) was synthesized by a coprecipitation method, followed by an intercalation process using an oxalic anion. The materials were characterized using X-ray diffraction analysis, FT-IR spectroscopy, and pH pzc measurement. The materials were then applied as adsorbents for removal of methylene blue (MB) and rhodamine B (RhB) from aqueous solution. Pristine Mg/Cr LDH exhibited RhB adsorption capacity of 32.154 mg g⁻1, whereas the use of intercalated Mg/Cr LDH caused an increase in the capacity (139.526 mg g⁻1). Kinetic studies indicated that the dye adsorption using both LDHs followed a pseudo-second-order kinetic model; the K2 values of pristine and modified Mg/Cr LDH for RhB and MB were 6.970, 0.001, 0.426, and 2.056 g mg⁻1 min⁻1, respectively. The thermodynamic study identified that the adsorption of both dyes onto the LDHs was a spontaneous process and can be classified as physical adsorption with adsorption energies of <40 kJ/mol. Moreover, the desorption and regeneration experiments indicated the high economic feasibility and reusability of the LDHs. By using HCl as the optimal solvent, the LDHs could desorb as much as 98% of the dye and could be used as adsorbents with high adsorption capacity over three cycles.

Titanium incorporated with UiO-66(Zr)-type Metal–Organic Framework (MOF) for photocatalytic application

RSC Advances ◽  
2016 ◽  
Vol 6 (5) ◽  
pp. 3671-3679 ◽  
Author(s):  
Aoning Wang ◽  
Yingjie Zhou ◽  
Zhoulu Wang ◽  
Miao Chen ◽  
Luyi Sun ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Metal Organic Framework ◽  
Dual Function ◽  
Photocatalytic Application ◽  
Methylene Blue Removal ◽  
Metal Organic ◽  
Organic Framework

Dual function of the adsorption and photodegradation for the methylene blue removal over the UiO-66(Ti) nanocomposites.

Photodegradation Activity of Nitrogen‐rich Graphitic Carbon Nitride Intercalated ZnO\Mg‐Al Layered Double Hydroxide Ternary Nanocomposites on Methylene Blue Dye

2019 ◽  
Vol 4 (11) ◽  
pp. 2982-2990 ◽  
Author(s):  
Kandasamy Bhuvaneswari ◽  
Govindasamy Palanisamy ◽  
Thangavelu Pazhanivel ◽  
Thandavarayan Maiyalagan ◽  
Ganapathi Bharathi
Keyword(s):  
Methylene Blue ◽  
Layered Double Hydroxide ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Double Hydroxide

scholarly journals Mg-Cr Layered Double Hydroxide with Intercalated Oxalic Anion for Removal Cationic Dyes Rhodamine B and Methylene Blue

2020 ◽  
Vol 9 (1) ◽  
pp. 85-94
Keyword(s):  
Methylene Blue ◽  
Adsorption Capacity ◽  
Layered Double Hydroxide ◽  
Rhodamine B ◽  
Physical Adsorption ◽  
Dye Adsorption ◽  
Kinetic Studies ◽  
Economic Feasibility ◽  
Order Kinetic ◽  
Double Hydroxide

A MgCr-based layered double hydroxide (LDH) was synthesized by a coprecipitation method, followed by an intercalation process using an oxalic anion. The materials were characterized using X-ray diffraction analysis, FT-IR spectroscopy, and pH pzc measurement. The materials were then applied as adsorbents for removal of methylene blue (MB) and rhodamine B (RhB) from aqueous solution. Pristine Mg/Cr LDH exhibited RhB adsorption capacity of 32.154 mg g⁻1, whereas the use of intercalated Mg/Cr LDH caused an increase in the capacity (139.526 mg g⁻1). Kinetic studies indicated that the dye adsorption using both LDHs followed a pseudo-second-order kinetic model; the K2 values of pristine and modified Mg/Cr LDH for RhB and MB were 6.970, 0.001, 0.426, and 2.056 g mg⁻1 min⁻1, respectively. The thermodynamic study identified that the adsorption of both dyes onto the LDHs was a spontaneous process and can be classified as physical adsorption with adsorption energies of <40 kJ/mol. Moreover, the desorption and regeneration experiments indicated the high economic feasibility and reusability of the LDHs. By using HCl as the optimal solvent, the LDHs could desorb as much as 98% of the dye and could be used as adsorbents with high adsorption capacity over three cycles.

scholarly journals High Reusability of NiAl LDH/Biochar Composite in the Removal Methylene Blue from Aqueous Solution

2021 ◽  
Vol 21 (2) ◽  
pp. 421
Author(s):  
Aldes Lesbani ◽  
Neza Rahayu Palapa ◽  
Rabelia Juladika Sayeri ◽  
Tarmizi Taher ◽  
Nurlisa Hidayati
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Layered Double Hydroxide ◽  
Physical Adsorption ◽  
Nitrogen Adsorption ◽  
Order Kinetic ◽  
Adsorption Model ◽  
Composite Formation ◽  
Adsorption Processes ◽  
Double Hydroxide

Ni/Al layered double hydroxide was used as a starting material for composite formation with biochar as a matrix. The materials were characterized using X-ray, FTIR, nitrogen adsorption-desorption, thermal, and morphology analyses. The NiAl LDH/Biochar material is then used as an adsorbent of methylene blue from an aqueous solution. The factor that was influencing adsorption such as pH, time, methylene blue concentration, and temperature adsorption was studied systematically. The regeneration of adsorbent was performed to know the stability of NiAl LDH/Biochar under several cycle adsorption processes. The results showed that NiAl LDH/Biochar has a specific diffraction peak at 11.63° and 22.30°. NiAl LDH/Biochar has more than ten-fold surface area properties (438,942 m2/g) than biochar (50.936 m2/g), and Ni/Al layered double hydroxide (92.682 m2/g). The methylene blue adsorption on NiAl LDH/Biochar follows a pseudo-second-order kinetic adsorption model and classify as physical adsorption. The high reusability properties were found for NiAl LDH/Biochar, which was largely different from biochar and Ni/Al layered double hydroxide.

Sign in / Sign up

Export Citation Format

Share Document