THÔng tin về luận văn thạc sĩ Họ và tên học viên: Phùng Thị Thu

2. Giới tính: Nữ

3. Ngày sinh: 10/08/1989

4. Nơi sinh: Khai Thái – Phú Xuyên – Hà Nội

5. Quyết định công nhận học viên số: 4375/QĐ-KHTN-CTSV, ngày 03 tháng 12 năm 2006 của Hiệu trưởng trường đại học Khoa học Tự nhiên, ĐHQG Hà Nội.

6. Các thay đổi trong quá trình đào tạo: không có

7. Tên đề tài luận văn: Nghiên cứu tổng hợp vật liệu quang xúc tác trên cơ sở TiO₂ và vật liệu khung cơ kim (MOF).

8. Chuyên ngành: Vật lý chất rắn

9. Mã số: 60440104

10. Cán bộ hướng dẫn khoa học:

HDC: TS. Nguyễn Thanh Bình, Viện Khoa học Vật liệu, Viện Hàn lâm KH&CN Việt Nam.

HDP: TS. Ngô Thị Hồng Lê, Viện Khoa học Vật liệu, Viện Hàn lâm KH&CN Việt Nam

12. Khả năng ứng dụng trong thực tiễn: Vì vật liệu này có hoạt tính quang xúc tác mạnh, diễn ra trong thời gian ngắn và dễ dàng thu hồi nên nó có khả năng thay thế các vật liệu quang xúc tác truyền thống ứng dụng để xử lý và làm sạch nguồn nước thải trong công nghiệp và đời sống.

13. Những hướng nghiên cứu tiếp theo: Tiếp tục nghiên cứu chế tạo vật liệu quang xúc tác mới này trên các vật liệu khung cơ kim khác như MIL-53, 69, MOF-177, ZIP-78

14. Các công trình đã công bố có liên quan đến luận văn:

1. 
   Nguyen Thanh Binh, Phung Thi Thu, Ngo Thi Hong Le, Dinh Manh Tien, Hoang thi Khuyen, Lam Thi Kieu Giang, nguyen Thanh Huong, Tran Thu Huong and Tran Dai Lam. “Study on preparation and properties of a novel photo-catalytic material based on copper-centered metal-organic frameworks (Cu-MOF) and titanium dioxide”. Tại hội nghị: The 4th International Workshop on Nanotechnology and Application (IWNA 2013), 14th-16th November 2013, Vung Tau, Viet Nam, AMN-042P được giải nhì poster
   
2. 
   Phùng Thị Thu, Đinh Mạnh Tiến, Ngô Thị Hồng Lê, Hoàng Thị Khuyên, Lâm Thị Kiều Giang, Trần Ngọc Linh, Trịnh Thị Mai Linh và Nguyễn Thanh Bình. “Nghiên cứu chế tạo và tính chất của vật liệu quang xúc tác mới trên cơ sở vật liệu khung cơ kim đồng (Cu-MOF) và oxit titan”. Tạp chí Khoa Học Công nghệ, 2014
   

2. Sex: female

3. Date of birth: 10/08/1989

4. Place of birth: Khai Thai – Phú Xuyên – Ha Noi

5. Admission decision number: 4375/QĐ-KHTN-CTSV dated 03/12/2012 of Principal of VNU, University of Science.

6. Changes in academic process: no

7. Official thesis title:

“Research synthesis photocatalytic materials based on TiO2 and metal organic framework (MOF)”.

8. Major: condensed physic s

9. Code: 60440104

10. Supervisors: 1. Dr. Nguyen Thanh Binh, Institute of Materials Science, VAST

2. Dr. Ngo Thi Hong Le, Institute of Materials Science, VAST

11. Summary of the finding of the thesis:

In recent decades, TiO₂ is used so much in photocatalytic reactions for the purpose of cleaning and decomposition of dye in the wasted water from industry and living due to its good characterizes such as: easy to make, non-toxic, cheap ... However, the band gap of TiO₂ is relatively high (3.2 eV for anatase TiO2) so it only uses 3-5% of sunlight, resulting in performance of photocatalytic reactions is not high. To enhance photocatalytic activity, in this thesis, I doped TiO₂ into the metal-organic framework, named CuBTC – formed by the metal ion Cu²⁺ which plays the central role and organic bridging by using BTC ligand (BTC = 1,3,5-tribezene dicarboxylate) in order to obtain the novel photocatalytic materials with name CuBTC@TiO₂. This material was prepared by the hydrothermal method though two stages. The first, the blue CuBTC (like as tenplate) powder were synthesized before being soaked titanium (IV) isopropoxide (a precursor containing Ti), then centrifuged at different rates: 0, 4000, 58000 rpm and different hydrothermal temperatures: 90°C, 110°C, 140°C. The characterizes, structure of this material werre measured by X-ray measurements, SEM, FT-IR, BET specific surface area and the photocatalytic activity was evaluated by measuring the degradation of methylene blue solution in the glass under irradiation of Xe-Hg lamp and using UV-visible adsorption spectrum measurement. It leads to the finding of the thesis, is that: to manufacture successfully the metal-organic framework, named CuBTC with the relatively high specific surface area (approximately 1350 m²/g) and high pure as well as the new photocatalytic materials CuBTC@TiO₂ with the high photocatalytic performance and higher than P25-Degasu. Namely, in the first 1 minute, degraded methylene blue when using CuBTC@TiO₂ reached to 30%, 46.52%, 36.72%, corresponds to hydrothermal temperatures 90°C, 110°C, 140°C, respectively, while there only was 35 % decomposed methylene blue in 10 minutes with P25-Degasu photocatalyst. The effect of centrifugal speed only alter the morphology of the product but little impact on photocatalytic activity of the material. Secondly, different morphology of the CuBTC@TiO₂ from shape like as “carambola” to long bars were fabricated by changing temperature, centrifugal speed while CuBTC had octahedral shape . The research results on materials with strong photocatalytic effect through the combination of the metal-organic framework material and TiO₂ showed the important role of the framework in the formation of nano-crystalline TiO₂ as well as affect to kinetic of photochemical reaction and effects increase sensitivity the absorption spectrum of the optical excitation. Finally, giving technology process to produce new photocatalytic material.

12. Practical applicability: Due to this material have strong photocatalytic activity, takes place in a short time and easily recovered so it have the ability to replace the traditionally photocatalytic materials in order to apply to processing and cleaning of waste water in the industry and the life.

13. Further research directions: To continue studying on manufacturing the novel photocatalytic materials on the the different metal-organic frameworks, such as: MIL-53, 69, MOF-177, ZIP-78.

14. Thesis-related publications:

1. Nguyen Thanh Binh, Phung Thi Thu, Ngo Thi Hong Le, Dinh Manh Tien, Hoang thi Khuyen, Lam Thi Kieu Giang, nguyen Thanh Huong, Tran Thu Huong and Tran Dai Lam. “Study on preparation and properties of a novel photo-catalytic material based on copper-centered metal-organic frameworks (Cu-MOF) and titanium dioxide”. In the Conference: The 4th International Workshop on Nanotechnology and Application (IWNA 2013), 14th-16th November 2013, Vung Tau, Viet Nam, AMN-042P được giải nhì poster