⊙ Coordination Chemistry of precious metals complexes with Thiazolyazo dye.
⊙ Photocatalytic degradation of pollutants based on the doped TiO₂ catalysts.
⊙ Environmental monitoring and modeling of pollutants in aquatic environments.
⊙ Utilization of bamboo charcoal.

⊙ Photocatalysis Photodegradation of organic pollutants by doped semiconductor

Nanoparticles of TiO₂ and ZnO were doped with metals (Sm, Gd, Co, Mn, etc. and some nonmetals (N, S etc) and used as photocatalysts for degradation of pollutants. The main pollutants that we are interest are dyes and some carcinogenic compounds such as PAHs, chlorophenol etc.

Our work shows that some of the photocatalyst such as Sm- doped ZnO and N-doped TiO₂ has high efficiency toward the degradation of Azo dyes and PAHs.

The main goal of this project is to prepare new photocatalysts which have higher efficiency in the photodegradation of pollutants. The work also extend to the search in photocatalysts for the photocatalytic reduction of CO₂ to fuel.

⊙ Bioinorganic Study on the biological properties, such as HIV-1 Protease Inhibitor property and DNA-binding property, of metal complexes

The aim of this project is to prepare and determine the structure of some metal complexes especially the noble metals group with organic ligand such as derivative of thiazolyazo compounds, derivative of porphyrin compounds. Then we will study on the binding of these metal complexes with some enzymes and DNA.

1. Songsasen, A. and Timms, P.L., Microfibrous Solids Derived from SiO and Form Other main Group Oxide Vapours,J.Mater. Chem, 2000, 10, 347-351.

2. Songsasen, A., Bangkedphol, S. and Pornsilapatip, P., Synchronous Fluorescence Spectroscopic Technique: The Tool for Rapid Identification of Polycyclic Aromatic Hydrocarbons (PAHs) At Sub-ppm Level in Liquid samples, Kasetsart J. (Nat. Sci.), 2002, 36 (3) : 267-277.

3. Bangkedphol, S. Sakultantimetha, A., Keenan, H.E. and Songsasen, A., Comparison of the Closed System, Microwave-Assisted Extraction of Polycyclic Aromatic Hydrocarbons from sediments. J. Environ. Sci. Health, Part A, A41(6) : 1105-1116 2006.

4. Keenan, H.E., Dyer, M., Songsasen, A., Bangkedphol, S. and Homchan, U., Environmental Monitoring of the Sediment Pollution Along the Thal : laos Mekong. J. ASTM, Vol.3, No.7: 3-8. 2006.

5. Satapanajaru, T., Anurakpongsatorn, P., Songsasen, A., Boparai, H. and Park, J., Using Low-Cost Iron Byproducts From Automotive Manufacturing To Remediate DDT, Water, Air, and Soil Pollution, 175: 361-374. 2006

6. Veerachalee, N., Taweema, P. and Songsasen, A., Complexation and Spectrophotometric Determination of Cobalt(II) Ion with 3-(2’-thiazolylazo)-2,6-diaminopyridine, Kasetsart J. (Nat. Sci.), 41(4) : 675-680. 2007

7. Bangkedphol, S.,Keenan, H.E., Davidson, C., Sakultantimetha, A., and Songsasen, A., Development of a Low Cost method of Analysis for the Qualitative and Quantitative Analysis of Butyltins in Environmental Samples, J. Environ. Sci. Health, Part A, A43(14):1744-1751. 2008.

8. Sirisaksoontorn, W., Thachepan, S., Suwanatus, S., and Songsasen, A., Photocatalytic Degradation of Benz[a]anthracene by Using N-Doped TiO₂, 34th Congress on Science and Technology of Thailand, 31^st October - 2^nd November, 2008, Bangkok, Thailand.

9. Hirunpinyopas, W., S.A. Davis, W. Sirisaksoontorn, A. Songsasen. 2015. “Sm/N-codoped TiO₂ Preparation, Characterization, and Photocatalytic Decolourization of Acid Orange 7 and Basic Blue 41 in Sunlight” ScienceAsia 41: 42-48.

10. Piyasaengthong, A., N. Boonyalai, S. Suramitr, A. Songsasen. 2015. “Synthesis, Characterization, and Pepsin Inhibition study of Au(III)-3(2’-Thiazolyazo)-2,6-Diaminopyridine Complex” Inorg. Chem. Commun. 59: 88-90.

ผลงานแต่งหรือเรียบเรียง ตำรา หนังสือหรือบทความทางวิชาการ

1. อภิสิฏฐ์ ศงสะเสน 2558.  “ผลของความเข้มข้นและอุณหภูมิต่ออัตราการเกิดปฏิกิริยา”, บทที่ 13, หน้า 124-136.  ใน ปฏิบัติการเคมีทั่วไป I. พิมพ์ครั้งที่ 11  กรุงเทพมหานคร: โรงพิมพ์ โอ. เอส. พริ้นติ้ง เฮ้าส์. 190 หน้า.