Fabrication of TiO2@ZnAl-layered double hydroxide based anode material for dye-sensitized solar cell

RSC Advances ◽  
2016 ◽  
Vol 6 (13) ◽  
pp. 10912-10918 ◽  
Author(s):  
Leila Jafari Foruzin ◽  
Zolfaghar Rezvani ◽  
Kamellia Nejati
Keyword(s):  
Solar Cell ◽  
Anode Material ◽  
Layered Double Hydroxide ◽  
Dye Sensitized Solar Cell ◽  
Precipitation Method ◽  
Dye Sensitized ◽  
Co Precipitation ◽  
Double Hydroxide

A TiO2@ZnAl-layered double hydroxide nanocomposite was prepared by the co-precipitation method; then, the product was calcined in order to obtain the TiO2@MMO nanocomposite, and use as anode material in dye-sensitized solar cell (DSSC).

scholarly journals The Effect of Gel-Electrolyte on Dye Sensitized Solar Cell (DSSC) Prototype based on Nanosized-TiO2 Using Mangosteen Pericarp as Absorber

2017 ◽  
Vol 3 (1) ◽  
pp. 186
Author(s):  
Biaunik Niski Kumila ◽  
Gontjang Prajitno
Keyword(s):  
Solar Cell ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Gel Electrolyte ◽  
Dye Sensitized Solar Cell ◽  
Precipitation Method ◽  
Dye Sensitized ◽  
Near Ultraviolet ◽  
Co Precipitation

<p style="text-align: justify;">Dye Sensitized Solar Cell (DSSC) with Fluorine deped Tin Oxide (FTO) substrat and nanosize-TiO2 layer sensitized by “dye” ,mangosteen pericarp extract, was succesfully fabricated. Gel-Electrolyte as electron regenerator was synthesized by adding Polyethylene Glycol (PEG) 1000 to electrolyte solution while nanosize-TiO2 was synthesized by co-precipitation method from TiCl3 solution. The crystal size of TiO2 characterized by X-Ray Diffraction is 10.5 nm in size. The solar absorbance of “dye” mangosteen pericarp was measured using UV-Vis Spectrophotometer and it showed that the dye can absorb photon at Near Ultraviolet (NUV) to yellow visible light. Nanosize-TiO2 based DSSC with gel-electrolyte successfully reached short circuit current up to 30.9 μA, open circuit voltage 398.3 mV and performed the long term stability. ©2017 JNSMR UIN Walisongo. All rights reserved</p>

An elegant synthesis of chitosan grafted hydrotalcite nano-bio composite material and its effective catalysis for solvent-free synthesis of jasminaldehyde

RSC Advances ◽  
2015 ◽  
Vol 5 (115) ◽  
pp. 94562-94570 ◽  
Author(s):  
Jacky H. Adwani ◽  
Noor-ul H. Khan ◽  
Ram S. Shukla
Keyword(s):  
Composite Material ◽  
Layered Double Hydroxide ◽  
Solvent Free ◽  
Precipitation Method ◽  
Co Precipitation ◽  
Double Hydroxide ◽  
Solvent Free Synthesis

A novel nano-bio composite of chitosan and a layered double hydroxide elegantly synthesized by a co-precipitation method had effectively and selectively catalysed the jasminaldehyde synthesis.

scholarly journals Structural Stability of Ni/Al Layered Double Hydroxide Supported on Graphite and Biochar Toward Adorption of Congo Red

2021 ◽  
Vol 6 (2) ◽  
pp. 85-95
Author(s):  
Patimah Mega Syah Bahar Nur Siregar ◽  
Neza Rahayu Palapa ◽  
Alfan Wijaya ◽  
Erni Salasia Fitri ◽  
Aldes Lesbani
Keyword(s):  
Aqueous Solution ◽  
Adsorption Capacity ◽  
Layered Double Hydroxide ◽  
Congo Red ◽  
High Performance ◽  
Precipitation Method ◽  
First Order ◽  
Xrd Diffraction ◽  
Co Precipitation ◽  
Double Hydroxide

In this research, Ni/Al layered double hydroxide (LDH) was modified by using co-precipitation method to generate Ni/Al-graphite (Ni/Al-GF) and Ni/Al-biochar (Ni/Al-BC). The adsorbents were applied to remove Congo Red from aqueous solution. The obtained samples were characterized by using XRD, FTIR, BET and TG-DTA. The XRD diffraction pattern of Ni/Al LDH, Ni/Al-GF, and Ni/Al-BC presented the formation of composite with decreasing crystallinity. The surface area modified LDHs was higher than the pristine materials, which was obtained 15.106 m2/g, 21.595 m2/g and 438.942 m2/g for Ni/Al-LDH, Ni/Al-GF, Ni/Al-BC respectively. The adsorption of Congo Red on the materials was tested at diferent parameters and the results exhibited that Congo Red adsorption on LDHs were pseudo-first-order (PFO) kinetic, spontaneous, endothermic and followed Langmuir model. The adsorbents removed Congo Red by high performance stability with adsorption capacity was 116.297 mg/g for Ni/Al-GF and 312.500 mg/g for Ni/Al-BC. These adsorption capacity was higher than the pristine LDH (61.728 mg/g). The regeneration process which carried out for five cycles showed that Ni/Al-GF and Ni/Al-BC have stable structures as reuse adsorbents for Congo Red from aqueous solution.

scholarly journals Oxidation of Cysteinate Anions Immobilized in the Interlamellar Space of CaAl-Layered Double Hydroxide

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1202
Author(s):  
Zita Timár ◽  
Truong Ngoc Hung ◽  
Cora Pravda ◽  
Zoltán Kónya ◽  
Ákos Kukovecz ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
Room Temperature ◽  
Precipitation Method ◽  
Confined Space ◽  
Oxidation Reactions ◽  
Sulfenic Acid ◽  
X Ray ◽  
Mild Conditions ◽  
Co Precipitation ◽  
Double Hydroxide

L-Cysteinate-intercalated CaAl-layered double hydroxide (LDH) was prepared by the co-precipitation method producing highly crystalline hydrocalumite phase with a well-pillared interlayer gallery. The obtained materials were characterized by X-ray diffractometry, IR as well as Raman spectroscopies. By performing interlamellar oxidation reactions with peracetic acid as oxidant, oxidation of cysteinate to cystinate in aqueous and cysteinate sulfenic acid in acetonic suspensions occurred. The oxidations could be performed under mild conditions, at room temperature, under neutral pH and in air. It has been shown that the transformation pathways are due to the presence of the layered structure, that is, the confined space of the LDH behaved as molecular reactor.

scholarly journals Structural, Thermal and Surface Properties of a Formulated Sunscreen: Zn/Al-nitrate Layered Double Hydroxide Intercalated with 4-aminobenzoic Acid

2021 ◽  
Vol 18 (13) ◽  
Author(s):  
Fadhlin Sakina MOHD RAJIDI ◽  
Iman Nur Fathihah Abdul AZIZ ◽  
Mazlina MUSA ◽  
Rozita YAHAYA
Keyword(s):  
Benzoic Acid ◽  
Layered Double Hydroxide ◽  
Harmful Effect ◽  
Precipitation Method ◽  
Basal Spacing ◽  
Pxrd Pattern ◽  
Type Iv ◽  
Co Precipitation ◽  
Double Hydroxide ◽  
Amino Benzoic Acid

Intercalation of 4-amino benzoic acid (4-AB) into Zn/Al-nitrate layered double hydroxide (ZAL2) to form Zn/Al-4AB (ZALAB) compound was successfully synthesized from nitrate salt by using direct co-precipitation method. ZALAB compound was confirmed by Powder X-ray diffraction (PXRD) pattern with a basal spacing of 15.3 Å. The presence of COO- and C6H5NH2 functional groups of 4-AB at 1,517 and 1,178 cm–1 in Fourier transform infrared (FTIR) spectrum reinforced 4-AB intercalated into the resulting compound. Based on the thermal analysis, 4-AB in ZALAB compound was more stable compared to pure 4-AB. Breuneur, Emmet and Teller/Barret-Joyner-Halenda (BET/BJH) analyses demonstrated that ZALAB compound is a mesopores-type IV compound with 4.25 m2/g surface area. This material is an irregular shape with different sizes of particles. ZALAB is a potential sunscreen formulation that minimizes the harmful effect on the skin, improving pharmaceutical technology in the skincare treatment. HIGHLIGHTS 4-amino benzoic acid (4-AB) is a sunscreen composed of carboxylic and aromatic groups that potentially filter UV-B radiation Layered double hydroxide (LDH) is known as an ionic clay that is based on the brucite (Mg (OH)2) -like cations layers containing intercalated charge-balancing anions and water Intercalation of 4-amino benzoic acid (4-AB) into Zn/Al-nitrate layered double hydroxide (ZAL2) to form Zn/Al-4AB (ZALAB) was synthesized using direct co-precipitation method ZALAB material has a higher thermal stability compared to 4-AB in pure form GRAPHICAL ABSTRACT

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