• 2002-2006: Ph.D. in Physics, University of Cambridge, U.K.
• 2001-2002: M.Sc. in Physics, University of Cambridge, U.K.
• 1998-2001: B.A. in Physics, University of Cambridge, U.K.

• Development and Promotion of Science and Technology Talents Project (DPST) Scholarship, 1996-2006.

Nanomaterials, Photo-Active Materials, Sensors, Environmental Technology, Optical and Time-Resolved Instrumentation.

Nanomaterials for environmental/sensing applications

One crucial property of nanomaterials is its large active surface area compared to that of conventional size materials. Several phenomena in nature such as adsorption and catalysis rely on interaction at the material interfaces and the use of nanomaterials can help to amplify or to better utilize these interface effects. The focus here has been on utilization of magnetic nanoparticles in separation of contaminants/ active components in several systems such as in environmental remediation, biomedical system and in heterogeneous catalysis. Ability of these nanoparticles to bind specifically to the interested target and to be separated or concentrated magnetically can also be exploited in sensing applications. Optical detection based mainly in infrared and UV-Visible regions are also being developed.

• 2008 - present: SIIT.
• 2006 - 2008 : Research Associate, Chemistry Department, Brookhaven National Laboratory.
• 2003 - 2005 : Teaching Supervisor, Part IB and Part II classes, University of Cambridge.
• 2001: Summer Internship, Biophysics Group, Syracuse University, USA.

• G. T. T. Le; J. Manyam; P. Opaprakasit; N. Chanlek; N. Grisdanurak; P. Sreearunothai. Divergent mechanisms for thermal reduction of graphene oxide and their highly different ion affinities, Diamond and Related Materials, 89 (2018).
• N. Naksin; K. Sombatmankhong; P. Opaprakasit; W. Chooaksom; N. Pathumrangsan; and P. Sreearunothai. Development of low-cost hydrophobic sachet for storage of ethylene scavenger for use in extending fruit shelf life, Proceedings of the 8th International Polymer Conference of Thailand 2018 (PCT-8), 14-15 June 2018, Bangkok, Thailand, 63-68 (2018).
• K. Lam; J. Manyam; C. Tansarawiput; P. Opaprakasit; and P. Sreearunothai. Development of infrared-reducing coating from poly(3 *4-ethylenedioxythiophene) polystyrene sulfonate, Proceedings of the 8th International Polymer Conference of Thailand 2018 (PCT-8), 14-15 June 2018, Bangkok, Thailand, 21-25 (2018).
• G. T. T. Le; N. Grisdanurak; and P. Sreearunothai. Seawater ions effect on the adsorption of cesium by reduced graphene oxide using fractional factorial design, Proceedings of the 7th International Conference on Informatics, Environment, Energy and Applications (IEEA 2018), 28-31 March 2018, Beijing, China, 77-81 (2018).
• T. Tubthong; A. Wisitsoraat; C. Tansarawiput; P. Opaprakasit; and P. Sreearunothai. Development of ammonia gas sensor based on Ni-doped reduce graphene oxide, Proceedings of the 4th International Conference on Engineering, Applied Sciences and Technology (ICEAST 2018), 4-7 July 2018, Phuket, Thailand, 760-763 (2018).
• P. Winaikij; P. Sreearunothai; and K. Sombatmankhong. Probing mechanisms for microbial extracellular electron transfer (EET) using electrochemical and microscopic characterisations, Solid State Ionics, 320 (2018).
• B. Nim; P. Sreearunothai; A. Petchsuk; and P. Opaprakasit. Preparation of TiO₂-loaded electrospun fibers of polylactide/poly(vinylpyrrolidone) blends for use as catalysts in epoxidation of unsaturated oils, Journal of Nanoparticle Research, 20, 4 (2018).
• S. Phonsa; P. Sreearunothai; S. Charojrochkul; and K. Sombatmankhong. Electrodeposition of MnO2 on polypyrrole-coated stainless steel to enhance electrochemical activities in microbial fuel cells, Solid State Ionics, 316 (2018).
• B. Suwanphithak; K. Kasemwong; P. Opaprakasit; and P. Sreearunothai. Synthesis and characterization of magnetic nanoparticlegraphene oxide composites using coprecipitation and solvothermal processes for cation removal, Proceedings of the 13th Asian Congress on Biotechnology 2017 (ACB 2017), 23-27 July 2017, Khon Kaen, Thailand, 187-1 - 187-13 (2017).
• M. Rahman; P. Sreearunothai; and P. Opaprakasit. Development and characterization of photoinduced acrylamide-grafted polylactide films for biomedical applications, International Journal of Polymer Science, 2017 (2017).
• H. C. Chen; P. Sreearunothai; A. R. Cook; S. Asaoka; Q. Wu; and J. R. Miller. Chain length dependence of energies of electron and triplet polarons in oligofluorenes, Journal of Physical Chemistry C, 121, 11 (2017).
• P. Kaewmee; J. Manyam; P. Opaprakasit; G. Truc Thi Le; N. Chanlekc; and P. Sreearunothai. Effective removal of cesium by pristine graphene oxide: performance, characterizations and mechanisms, RSC Advances, 7, 61 (2017).
• N. Tippo; J. Manyam; B. Yoosuk; P. Opaprakasit; and P. Sreearunothai. Slow release of menthol using sorbents developed from microwave graphene oxide, King Mongkuts University of Technology North Bangkok International Journal of Applied Science and Technology, 10, 1 (2017).
• S. Sriwongsa; J. Manyam; P. Opaprakasit; and P. Sreearunothai. Electrospun nanofiber of poly-L-lactic acid (PLLA)/graphene oxide (GO) blends, Proceedings of the 7th International Polymer Conference of Thailand 2017 (PCT-7), 1-2 June 2017, Bangkok Thailand, 146-151 (2017).
• B. Nim; P. Sreearunothai; T. Onjun; and P. Opaprakasit. Property modifications of polylactide/polyvinylpyrrolidone blends loaded with TiO2 by dielectric barrier discharge (DBD) plasma treatment, Proceedings of the Pure and Applied Chemistry International Conference 2017 (PACCON2017), 2-3 February 2017, Bangkok, Thailand, 934-939 (2017).
• K. R. Tolod; C. J. E. Bajamundi; R. de Leon; P. Sreearunothai; R. Khunphonoi; and N. Grisdanurak. Visible light-driven photocatalytic hydrogen production using Cu-doped SrTiO₃, Energy Sources, Part A: Recovery, Utilization and Environmental Effects 38, 2 (2016).
• P. Winaikij; P. Sreearunothai; C. Sinprasertchok; and K. Sombatmankhong. The optimal conditions for microbial cultivation to enhance electrochemical activities in microbial fuel cells, Proceedings of the 2nd International Conference on Engineering Science and Innovative Technology (ESIT2016), 21-23 April 2016, Phuket, Thailand, 325-330 (2016).
• P. Kaewmee; J. Manyam; H.A.H.M. Munasinghe; P. Opaprakasit; and P. Sreearunothai. Synthesis of graphene oxides and its cesium sorption performance, Proceedings of the 2nd International Conference on Engineering Science and Innovative Technology (ESIT2016), 21-23 April 2016, Phuket, Thailand, 331-336 (2016).
• S. Phonsa; P. Sreearunothai; C. Sinprasertchok; and K. Sombatmankhong. Polypyrrole-coated stainless steel for enhancing electrochemical active surface area in microbial fuel cell applications, Proceedings of the 2nd International Conference on Engineering Science and Innovative Technology (ESIT2016), 21-23 April 2016, Phuket, Thailand, 319-324 (2016).
• S. Tripan; R.  Maolanon; and P. Seearunothai. Silver nanostructure for detection of hydrogen sulfide gas, Proceedings of the 4th International Symposium on Engineering, Energy and Environment (4th ISEEE 2015), 8-10 November 2015, Pattay City, Chonburi, Thailand, 295-300 (2015).
• P. Deesaen, P. Opaprakasit, J. Manyam, R. Egashira, and P. Sreearunothai. Effect of synthesis time and crystallinity on the Ni(II) sorption performance of zeolite-like titanosilicate compounds, Proceedings of the IRES 7th International Conference, 2015: The 4th International Academic Conference on Engineering, Technology and Innovations (IACETI-2015), Kuala Lumpur, Malaysia, 16 August 2015, 7-11 (2015)
• W. Moonkambil, P. Opaprakasit, J. Sumranjit, and P. Sreearunothai. Synthesis and characterization of titanosilicate compounds for Pb (II) removal, Proceedings of the IRES 7th International Conference: The 4th International Academic Conference on Engineering, Technology and Innovations (IACETI-2015), 16 August 2015, Kuala Lumpur, Malaysia, 1-6, (2015)
• T. Boonsod, P. Sreearunothai, and P. Opaprakasit. Analysis of free fatty acids contents in palm oil samples employing 1,1-carbonyldiimidazole reagent and a portable infrared spectrometer. Proceedings of Burapha University International Conference 2015 (BUU 2015), 10-12 July 2015, Chonburi, Thailand, 676 (2015).
• G. Truc Le Thi and P. Sreearunothai. Magnetic particles for phosphorus adsorption in simulated phosphate solution. International Proceedings of Chemical, Biological and Environmental Engineering: Proceedings of the 2015 4th International Conference on Informatics, Environment, Energy and Applications (IEEA 2015), 28-29 March 2015, Chonburi, Thailand, Vol. 82, 144-148. (2015)
• G. Truc Le Thi and P. Sreearunothai. Application of magnetic particles for phosphorus removal from domestic wastewater. Proceedings of the 9th GMSARN International Conference 2014 on Connectivity and Sustainability in GMS: Energy, Environmental and Social Issues [CD-ROM], 12-14 November 2014, Ho Chi Minh City, Vietnam, 6 p. (2014)
• R. Masae, P. Opaprakasit, A. Petchsuk, D. Polpanich, and P. Sreearunothai. Removal of free-fatty acid from waste cooking oils using iron oxide magnetic nanoparticles for use in biodiesel production. Proceedings of the Pure and Applied Chemistry International Conference 2014 (PACCON2014), 8-10 January 2014, Khon Kaen, Thailand, 596 (2014).
• P. Nalakarn, R. Masae, P. Opaprakasit, and P. Sreearunothai. Synthesis and characterization of sodium-titanosilicate coated magnetic particles for removal of cesium from contaminated water. Proceedings of the Pure and Applied Chemistry International Conference 2014 (PACCON2014), 8-10 January 2014, Khon Kaen, Thailand, 611 (2014).
• C. Thammawong, S. Buchatip, A. Petchsuk, P. Tangboribbonrat, N. Chanunpanich, M. Opaprakasit, P. Sreearunothai, P. Opaprakasit. Electrospinning of Poly(L-lactide-co-DL-lactide) copolymers: effect of chemical structures and spinning conditions. Polymer Engineering and Science, 54, 472 (2014).
• C. Thammawong, P. Opaprakasit, P. Tangboriboonrat, and P. Sreearunothai. Prussian blue-coated magnetic nanoparticles for removal of cesium from contaminated environment. Journal of Nanoparticle Research, 15, Article No. 1691, 10 p. (2013).
• C. Thammawong, P. Sriarunothai, A. Petchsuk, P. Tangboriboonrat, N. Pimpha, and P. Opaprakasit. Preparation and characterizations of naproxen-loaded magnetic nanoparticles coated with PLA-g-chitosan. Journal of Nanoparticle Research 14 Article No. 1046, 12 p. (2012).
• Laksana Laokiat, Pongtanawat Khemthong, Nurak Grisdanurak, Paiboon Sreearunothai, Wanwisa Pattanasiriwisawa, and Wantana Klysubun. Photocatalytic degradation of benzene, toluene, ethylbenzene, and xylene (BTEX) using transition metal-doped titanium dioxide immobilized on fiberglass cloth. Korean Journal of Chemical Engineering 29, 377 (2012).
• Netchanok Tanyawiwat, Surapa Thiemjarus, Paiboon Sreearunothai, Prakasith Kayasith, and Itsuo Kumazawa. ASL fingerspelling gesture segmentation with and without resting gestures. Proceedings of the Third International Conference on Information and Communication Technology for Embedded Systems (ICICTES2012) [CD-ROM], 22-24 March 2012, Bangkok, Thailand, 6 p. (2012).
• Andrew R. Cook, Paiboon Sreearunothai, Asanoka, Sadayuki, and John R. Miller. Sudden, “Step” electron capture by conjugated polymers, The Journal of Physical Chemistry A 115, 11615 (2011).
• Paiboon Sreearunothai, Alexis Estrada, Sadayuki Asaoka, Marta Kowalczyk, Seogjoo Jang, Andrew R. Cook, Jack M.Preses, and John R. Miller. The Journal of Physical Chemistry C 115, 19569 (2011).
• Julia M. Keller, Ksenija D. Glusac, Evgeny O. Danilov, Sean Mcllroy, Paiboon Sreearunothai, Andrew R. Cook, Hui Jian, John R. Miller, and Kirk S. Schanze. Negative Polaron and Triplet Exciton Diffusion in Organometallic “Molecular Wires”. Journal of the American Chemical Society 133, 11289 (2011).
• Prasong Permsuwan, Pakawat Sancharoen, Somnuk Tangtermsirikul, Paiboon Sreearunothai, Ekkarut Viyanit, and Wanida Pongsaksawad. Effects of environmental condition on corrosion of structural steel in marine environment of Thailand. Proceedings of the 10th International Symposium on New Technologies for Urban Safety of Mega Cities in Asia (USMCA 2011) [CD-ROM], 12-14 October 2011, Chiang Mai, Thailand, 12 p. (2011).
• Prasong Permsuwan, Pakawat Sancharoen, Somnuk Tangtermsirikul, Paiboon Sreearunothai, and Ekkarut Viyanit. Corrosion of Different Types of Steel in Atmospheric and Tidal Marine Environment of Thailand. Research and Development Journal of the Engineering Institute of Thailand 22, 17 (2011),
• Y. Shibano, H. Imahori, P. Sreearunothai, A. R. Cook and J. R. Miller. Conjugated “Molecular Wire” for Excitons. J.Phy. Chem. Lett. 1492-1496 (2010).
• P. Sreearunothai, S. Asaoka, A. R. Cook and J. R. Miller. Length and Time Dependent Rates in Diffusion-Controlled Reactions with Conjugated Polymers. J. Phys. Chem. A. 113, 2786 (2009).
• J. S. Kim, L. Lu, P. Sreearunothai, A. Seeley, K. H. Yim, A. Petrozza, C. E. Murphy, D. Beljonne, J. Cornil, and R. H. Friend. Optoelectronic and Charge Transport Properties at Organic-Organic Semiconductor Interfaces. J. Am. Chem. Soc. 130, 13120 (2008).
• Y. S. Huang, S. Westenhoff, I. Ivalov, P. Sreearunothai, J. M. Hodgkiss, C. Deleener, R. H. Friend and D. Beljonne. Electronic Structures of Interfacial States formed at Polymeric Semiconductor Heterojunctions. Nature Materials. 7, 483 (2008).
• P. Sreearunothai, A. C. Morteani, I. Avilov, J. Cornil, D. Beljonne, R. H. Friend, R. T. Phillips, C. Silva, and L. M. Herz. Influence of Copolymer Interface Orientation on the Optical Emission of Polymeric Semiconductor Heterojunctions.Phys. Rev. Lett. 96, 117403 (2006).
• A. C. Morteani, P. Sreearunothai, L. M. Herz, R. H. Friend, and C. Silva. Exciton Regeneration at Polymeric Semiconductor Heterojunctions. Phys. Rev. Lett. 92, 247402 (2004).
• A. L. T. Khan, P. Sreearunothai, L. M. Herz, M. J. Banach, and A. Kohler. Morphology-dependent Energy Transfer within Polyfluorene Thin Films. Phys. Rev. B 69, 085201 (2004).