A5036678099- Layered Double Hydroxides Synthesis and Applications
- Lanthanide and Transition Metal Complexes
- Crystallization and Solubility Studies
- Organic Light-Emitting Diodes Research
- X-ray Diffraction in Crystallography
- Magnetism in coordination complexes
- Magnesium Oxide Properties and Applications
- Metal complexes synthesis and properties
- Electrochemical sensors and biosensors
- Analytical Chemistry and Sensors
- Catalytic Cross-Coupling Reactions
- Mesoporous Materials and Catalysis
- Electrochemical Analysis and Applications
- Molecular Sensors and Ion Detection
- Advanced Photocatalysis Techniques
- Organometallic Complex Synthesis and Catalysis
- Conducting polymers and applications
- Essential Oils and Antimicrobial Activity
- Nanomaterials for catalytic reactions
- Supercapacitor Materials and Fabrication
- Synthesis and Biological Evaluation
- Polyoxometalates: Synthesis and Applications
- Crystallography and molecular interactions
- Metal-Organic Frameworks: Synthesis and Applications
- Inorganic Chemistry and Materials
Sultan Idris Education University
2014-2024
Sindh Agriculture University
2018
University of Sheffield
2012-2014
Kagawa University
2005
National University of Malaysia
2003
Rubiaceae adalah famili terbesar dalam kumpulan dikotiledon di Semenanjung Malaysia. Suatu kajian awal berkaitan struktur dirian dan komposisi pokok daripada telah dijalankan hutan dipterokarpa tanah rendah Hutan Simpan Behrang, Perak. Tiga plot berukuran 25 m x 20 (0.05 hektar) ditubuhkan secara rawak denai terpilih. Keluasan keseluruhan 0.15 ha. Bancian melibatkan semua yang diameter pada paras dada 1.0 cm ada ke atas. Pokok ditanda manakala sampel daun dikutip, diawet sebelum dicamkan...
Kertas kajian ini menyenaraikan spesies-spesies dipterokarpa yang terdapat di Pulau Pangkor, Perak. Terdapat tiga hutan simpan pulau iaitu Hutan Simpan Sungai Pinang (HSSP), Pangkor Utara (HSPU) dan Selatan (HSPS). Tinjauan pengutipan sampel steril fertil telah dibuat semua denai ketiga-tiga simpan. Sampel diawet, dikeringkan dicamkan sehingga peringkat spesies. Data tambahan juga diperolehi dari spesimen-spesimen tersimpan Herbarium Institut Penyelidikan Perhutanan Malaysia (KEP). Hasil...
Kajian berkaitan struktur komuniti pokok telah dijalankan di Hutan Simpan Kemasul, Temerloh, Pahang. ini merupakan hutan dipterokarpa tanah rendah yang dibalak dan dikelilingi oleh ladang kelapa sawit sekitarnya. Dua buah plot, setiap satu berukuran 25 m x 20 dibina secara rawak. Keluasan plot kajian adalah 0.1 hektar. Semua berdiameter pada paras dada (DBH) 10.0 cm ke atas ditanda diukur. Sebanyak 77 dirian daripada 47 spesies, 36 genus 19 famili dibanci. Euphorbiaceae s.l. terbesar yag...
Kajian ini melaporkan spesies-spesies daripada genus Castanopsis yang ditemui di Taman Negara Pahang. Sejumlah lima spesies telah direkodkan iaitu C. curtisii, inermis, foxworthyi, megacarpa dan nephelioides. Hanya satu endemik Semenanjung Malaysia curtisii tertabur enam negeri Perlis, Kedah, Kelantan, Pulau Pinang, Pahang Selangor. This study reports the species from found in A total of five were recorded, namely megacarpa, and Only one species, is endemic to Peninsular Malaysia, it...
[Ir(ppy)(2)(CN)(2)](-) (ppy = anion of 2-phenylpyridine) and some substituted derivatives have been investigated for their ability to interact with additional metal cations, both in solution the solid state, via externally-directed cyanide lone pairs, act as energy-donors resulting assemblies. is slightly solvatochromic, showing a blue-shift lowest energy absorption manifold water compared organic solvents, solubilised (t)Bu-substituted analogue [Ir((t)Buppy)(2)(CN)(2)](-) [(t)Buppy...
In Ir(<sc>iii</sc>)/Eu(<sc>iii</sc>) and Ir(<sc>iii</sc>)/Tb(<sc>iii</sc>) dyads, sensitization of lanthanide luminescence occurs <italic>via</italic> both energy-transfer electron-transfer pathways on similar timescales.
Ferulic acid (FA) was intercalated into zinc layered hydroxide (ZLH) to form a new nanocomposite, namely hydroxide-ferulate (ZLH-FA) and further coated by surfactants sodium dodecyl sulfate (SDS) polysorbate 80 (Tween-80). XRD patterns of the ZLH-FA nanocomposite obtained reveals crystalline structure with basal spacing 26·9 Å. The pattern showed similar peaks nanocomposite. loading FA in estimated be 56·82% (w/w), its thermal stability markedly enhanced compare free counterpart. A...
The ion exchange method was used to intercalate a poor water-soluble insecticide, isoprocarb into zinc layered hydroxide (ZLH). PXRD analysis indicated the successful intercalation with good crystallinity for resulting nanocomposite, basal spacing of 33.1 Å. FTIR analyses showing resemblance an absorption peak nanocomposite host and guest anion. thermal confirmed that had better stability compared pristine isoprocarb. also characterized by elemental surface morphology analysis. showed...
Ferulic acid is (FA) a phenolic compound found in vegetables, fruits, cereals and coffee. It exists both free form covalently conjugated to polysaccharides the plant cell wall, polyamines, hydroxyl fatty acids, lignin, glycoproteins. has exhibited many vital biological properties, such as growth enhancing, antioxidant, antibacterial immunomodulatory effects. can be used food preservative wide range of applications. FA been reported potent antioxidant anti-inflammatory agent considered part...
The ionic liquid 1-ethyl-3-methylimidazolium bromide (EMIMBr) based graphene composite paste electrode (GrPE) was fabricated and applied for the determination of hydroquinone. By using square wave voltammetry, electrochemical response hydroquinone on EMIMBr-GrPE greatly enhanced in 0.7 M phosphate buffer solution (pH 7.0). Under optimized conditions, proposed showed a linear relationship with concentration range 1.0×10-6 to 1.0×10-2 m limit detection 2.77x10’7 M. interferences Ba2+, Cu2+,...
Zn/Al-layered double hydroxide-quinclorac (Zn/Al-LDH-QC) nanocomposite has been synthesised via co-precipitation method. The versatility of the Zn/Al-LDH enables this host material to be intercalated with quinclorac (QC), a type auxin agonist herbicide that was widely used in paddy cultivation. PXRD analysis shows basal spacing Zn/Al-LDH-QC expanded range 15.8–16.7 Å (from 8.8 Zn/Al-LDH), therefore indicating successful intercalation QC into interlayer gallery Zn/Al-LDH. also proven from...
A novel potentiometric membrane sensor has been developed and optimized based on [4](1)(2,3-Diazabuta-1,3-diene)ferrocenophane as an ionophore in poly(vinyl chloride) matrix (PVC) plasticized with tris(2-ethylhexyl) phosphate (TEHP) for high selective determination of glutamate. The works well a linear range 1.0x10-5 to 1.0x10-1 M glutamate Nernstian slope 57.6±1.0 mV/decade its detection limit is 7.95x10-6 M. shows working over the pH 6-10 at temperature 25±1 °C stable period 3 months...
A novel electrochemical sensor for sensitive and selective detection of hydroquinone (HQ) was developed using graphene/iridium(III) dimer complex composite modified glassy carbon electrode (graphene/Ir(III) complex/GCE). The characterised by field emission scanning electron microscopy, energy dispersive X-ray microanalysis, Fourier transform infrared spectroscopy photoelectron spectroscopy. graphene/Ir(III) complex/GCE has provided higher surface area which good catalytic activity enhanced...
Zn/Al layered double hydroxide (LDH) intercalated by an anionic phenoxyherbicide guest, 3-(4-methoxypheny) propionate (MPP) were prepared ion-exchange method. Power XRD and FTIR shows that the MPP successfully into LDH interlayer. The basal spacing for hydroxide-3-(4-methoxyphenyl) nanocomposite (LDH-MPP) was 18.7 Å - 20.5 0.015 M, 0.025 0.050 M of MPP, respectively. Thermal analysis thermal stability improved intercalation results also supported elemental surface morphology this nanocomposite.
Our research group is focusing on luminescence of coordination compounds which based cyanide bridging interactions. Recently, four cyanometallate complexes Ir(III) complex [Ir(ppy)2(CN)2]-, one an extensive family cyclometallating phenylpyridine ligands that have achieved prominence for their desirable photophysical properties, were successfully synthesised. The present study showed that, the introduction fluorine atoms to phenyl rings could enhance triplet excited state energy and thus...
The intercalation of chloroacetic acid (CAA) into the interlayer gallery zinc layered hydroxide has been achieved via a facile direct reaction method. nanohybrid synthesised, hydroxide-chloroacetate was characterised using Powder X-ray diffraction patterns (PXRD), which demonstrated progressive evolution structure, as CAA molarity were increased from 0.05 to 0.3 M. Sharp and symmetrical peaks M observed in PXRD pattern. emergence peak, with basal spacing 14.3 Å signifying success...
A novel organic-inorganic nanocomposite based on carbamate insecticide-zinc layered hydroxide modified with sodium dodecyl sulphate (ZLH-SDS-PRO) was synthesized through ion exchange method of propoxur commercially available zinc nitrate at various concentrations. The intercalation into the interlayer (ZLH-SDS) confirmed by PXRD analysis basal spacing pure phase 33.1 Å. anions suggested to be arranged in a bilayer form between galleries hydroxide. also supported Fourier transforms infrared...
This study reports on the preparation of novel zinc/aluminium layered double hydroxide intercalated clopyralid (Zn/Al-LDH-CP) nanocomposites fabricated via co-precipitation.An expansion interlayer gallery Zn/Al-LDH for accommodation was observed from powder X-ray diffraction (PXRD) pattern, confirming occurrence intercalation.The results Fourier transform infrared and elemental analysis were consistent with those PXRD, thus supporting intercalation clopyralid.The thermal studies showed that...
This study was conducted to synthesise Zn/Al-layered double hydroxide-ʟ-phenylalanate (Zn/Al-LDH-LP) nanocomposite via ion exchange method. The synthesised characterised using PXRD, FTIR, CHNS, ICP-OES, TGA/DTG and FESEM. PXRD patterns of the Zn/Al-LDH-LP demonstrate an expansion interlayer spacing, with a value 15.8 Å, hence, indicates successful intercalation drug ʟ-phenylalanate into gallery hydroxide. also confirmed by FTIR which show appearance peaks in spectra that represents alkyl C‒H...