DUONG THI THUY The aims of this project were to synthesis nanoparticles and test the ability of algal inhibition of synthesized nanoparticles. Approaches are needed to apply synthesized nanoparticles in bloom-forming control in freshwaters.

Theoretical results
- 5 nanoparticles were successfully synthesized (nano silvers synthesized using chemical reduction and electrochemical methods; nano coppers synthesized using chemical reduction and polyol methods and nano TiO2 synthesized using sol-gel method). We investigated the inhibition potential of synthesized nanoparticles on the growth of cyanobacteria.
- Effects of silver and copper nanopartiles on growth of strains M.aeruginosa and C.vulgaris were investigated using optical density measurement, chlorophyll a, cell density and EC50 analysis).
- From 5 synthesized nanoparticles, we have indentified 3 nanoparticles (nano silvers synthesized using chemical reduction and electrochemical methods and nano coppers synthesized using chemical reduction) that are able to inhibit the growth of cyanobacteria strain M.aeruginosa.
- We demonstrate an effective, selective algicidal effect of copper nanoparticles on Cyanobactrial strain M. aeruginosa, compared to green algae strain C. vulgaris.
- Establishment of a laboratory-scale for nanoparticles synthesis and their application in bloom-forming cyanobacteria control.
Applied results
- The present study also suggests that copper nanoparticles were selective and effective for the control cyanobacteria bloom. Thus, copper nanoparticles have great promise as an anti-algal agent and it has a great potential for use in controlling bloom-forming cyanobacteria in freshwaters.

- Study on synthesis of nanoparticles and its application in bloom-forming control in freshwater.

Scientific papers in referred journals (list):
01 international articles (SCIE)
Duong TT., Le TS., Tran TTH., Nguyen TK., Ho TC., Dao TH., Le TPQ., Nguyen HC., Dang DK., Le TTH., Ha PT. 2016. Inhibition effect of engineered silver nanoparticles to bloom forming cyanobacteria. Adv. Nat. Sci.: Nanosci. Nanotechnol. 7 (3). doi:10.1088/2043-6262/7/3/035018.
01 International article (ISSN)
Tran TTH., Nguyen TK., Nguyen TTT., Ha PT., Do VB., Dinh THV, Trinh QH, Duong TT (2006). Nanoparticles as a control for cyanobacterial bloom. J. Viet. Env. 8(3): 161-166.
01 International article in international conference
Tran THH., Duong TT., Ha PT., Nguyen TK., Dang DK., Dao TH (2016). The initial results for investigating effects of nanomaterials on growth and development of cyanobacterial population on Microcystis aeruginosa. The 4th Academic Conference on Natural Science for Young Scientists, Thailand: 65-73.
03 national articles
Trần Thị Thu Hương, Dương Thị Thủy, Nguyễn Trung Kiên, Hồ Tú Cường, Đặng Đình Kim, Hà Phương Thư, Đào Trọng Hiền, Nguyễn Hoài Châu, Lê Thị Phương Quỳnh, Đinh Thị Hải Vân, Trịnh Quang Huy (2016). Ảnh hưởng của một số vật liệu Nano kim loại đến sinh trưởng của chủng vi khuẩn lam Microcystis aeruginosa KG, Tạp chí Khoa học và Công nghệ, 53(6A) 2015: 50-57.
Trần Thị Thu Hương, Dương Thị Thủy, Đặng Đình Kim, Hà Phương Thư, Hồ Tú Cường, Nguyễn Trung Kiên, Nguyễn Thị Thúy, Trần Thị Kim Hà, Trần Hồng Hà (2016). Ảnh hưởng của các vật liệu Nano Bạc lên sinh trưởng của Bèo Lemna sp, Tạp chí Công nghệ sinh học, 14(2): 1-8. 2016.
Nguyễn Trung Kiên, Trần Thị Thu Hương, Dương Thị Thuỷ (2017). Ảnh hưởng độc tính của vật liệu Nano Đồng (Cu) đến sự sinh trưởng của Daphnia magna Strauss. Tạp chí Sinh học (chấp nhận đăng).