ACCOMPLISHMENTS

SCIENTIFIC FINDINGS

Heteropolyacid
Heteropolyacid is embedded covalently in the structure of silica gel

Trimethylstearylammonium
Trimethylstearylammonium chloride prevents agglomeration of particles during sol-gel synthesis

HPA
HPA particles in the silica structure have size 5-20 nm

Silica
Silica gel containing phosphotungstic acid has excellent adsorption capacity on cesium

Adsorption
Adsorption of cesium significantly affects porosity and results in increasing amount of micropores and acidic sites

PUBLICATIONS

  1. 1. O. Adetola, L. Golovko, A. Vasiliev. Modification of silica gel by heteropolyacids. Key Engineering Materials, 2016, v. 689, p. 126-132 (Link)
  2. 2. O. Adetola, I. Little, R. Mohseni, D. Molodyi, S. Bohvan, L. Golovko, A. Vasiliev. Synthesis of mesoporous silica gels with embedded heteropolyacids. Journal of Sol-Gel Science and Technology, 2017, 81,205-213 (Link)
  3. 3. K. Seaton, I. Little, C. Tate, R. Mohseni, M. Roginskaya, V. Povazhniy, A. Vasiliev. Adsorption of cesium on silica gel containing embedded phosphotungstic acid. Microporous and Mesoporous Materials, 2017, 244, p. 55-66 (Link)
  4. Little I., Seaton K., Alorkpa E., Vasiliev A. Adsorption of cesium on bound porous materials containing embedded phosphotungstic acid. Adsorption 2017, 23, 809-819 (Link) 

CONFERENCE PRESENTATIONS

1. A. Vasiliev, O. Adetola, Superacidic mesoporous materials, 250th National ACS Meeting, Boston, MS, August 16-20, 2015. INOR-501 (Link)

2. O. Adetola, L. Golovko, A. Vasiliev. Sol-gel synthesis of modified silica gels containing incorporated heteropolyacids. 251th National ACS Meeting, San Diego, CA, March 13-17, 2016. COLL-171. (Link)

3. O. Adetola, L. Golovko, A. Vasiliev. Modification of silica gel by heteropolyacids. 6th International Conference on Advanced Materials Research, Turin, Italy, January 22-24, 2016 (Link)

4. K. Seaton, I. Little, A. Vasiliev. Efficient adsorbent for immobilization of caesium on contaminated areas. 5th World Congress on Materials Science & Engineering, Alicante, Spain, June 13-15, 2016. Abstr. publ. in: Journal of Material Science and Engineering 2016, v.5, p. 85 (suppl.) (Link)

5. K. Seaton, I. Little, C. Tate, A. Vasiliev. Adsorption of caesium on porous silica gel modified by phosphotungstic acid. 5th Int. Conf. on Multifunctional, Hybrid and Nanomaterials, Lisbon, Portugal, March 6-10, 2017. P1.185 (Link)

6. O. Adetola, A. Vasiliev. Mesoporous materials containing heteropolyacids. 2015 Joint Southeastern/Southwest Regional Meeting, Memphis, TN, November 4-7, 2015, abstr. 86 (Link)

7. K. Seaton, I. Little, C. Tate, A. Vasiliev. Adsorption of caesium from contaminated waters on phosphotungstic acid embedded in silica matrix. 68th Southeastern Regional Meeting. Columbia, SC, October 23-26, 2016. Poster 821 (Link)

8. O. Adetola, I. Little, A. Vasiliev. Sol-gel synthesis of modified silica gels containing incorporated heteropolyacids. 2016 Appalachian Students Forum, Johnson City, TN, April 6-7, 2016, abstr. 78, p. 89 (Link)

9. I. Little, O. Adetola, A. Vasiliev. Modified silica gels as potential adsorbents for radioactive cesium-137. 30th National Conference on Undergraduate Research, Asheville, NC, April 7-9, 2016 (Link)

10. K. Seaton, I. Little, C. Tate, A. Vasiliev. Efficient adsorbent for clean-up of water after a nuclear accident. 2017 Appalachian Student Research Forum, April 11-12, 2017, Johnson City, TN. P. 45-46 (Link)

11. C. Tate, K. Seaton, I. Little, A. Vasiliev. Superacidic porous materials containing embedded heteropolyacid. 2017 Appalachian Student Research Forum, April 11-12, 2017, Johnson City, TN. P. 183, p. 218-219 (Link)

12. I. Little, A. Vasiliev. Functionalized material for selective adsorption of cesium. 2017 Boland Undergraduate Research Symposium. March 28, 2017. Johnson City, TN. (Link)

13. D. V. Molodii, L.V. Golovko. Formation of acidic/basic nanocatalysts with heteropolyacids and lysin. 31st Conference on Bioorganic Chemistry and Petrochemistry, Kiev, Ukraine, March 31-April 1, 2016 (Link)

14. Vasiliev A., Little I., Seaton K. Effect of binder on adsorption of cesium on silica gel containing embedded phosphotungstic acid. 9th World Congr. Materials Sci. Eng., Rome, 2017. Publ. in J. Material. Sci. Eng. 2017, 6, 243. (Link)

15. Khan V., Povazhnyi V., Seaton K., Little I., Vasiliev A. Efficient adsorbent for removal of radioactive cesium from water. 5th Int. Conf. Chem. Radiat. Safety, Kiev, 2017. P. 77. (Link)

16. Little I., Alorkpa E., Vasiliev A. Adsorbent for cleanup of contaminated water after a nuclear accident. SoCon Undergraduate Research Forum, Spartanburg, SC 2017.

17. Little I., Seaton K., Vasiliev A. Bound mesoporous adsorbents for removal of cesium from contaminated water. 69th Southeast. Reg. Meet. ACS, Charlotte, NC 2017.

FINAL REPORT (Link)

MS THESIS

1. O. Adetola. Immobilization of heteropolyacids in silica gel. MS thesis. ETSU, 2016, paper 3050 (Link)

2. K. Seaton. Functionalized silica gel for adsorption of cesium from solution. MS thesis. ETSU, 2017,paper 3215(Link)

ABOUT PROJECT

1. S. Howard. Cesium adsorption in the environment. Illuminated. Graduate student research magazine. Fall 2016, p. 8-9. (Link).

2. Наука заради миру і безпеки. Інформаційний день наукової програми НАТО. Visn. Nac. Acad. Nauk Ukr., 2016 (6), 12-18 (Link)

3. Development of a superselective adsorbent against CBRN agents. NATO SPS Science Day in Kyiv, Ukraine, 27 May 2016. NATO, 2016 (Link)