Chi Sy Phung

Trường ĐH Nguyễn Tất Thành

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Ngoc Bich Hoang

Vietnam National University, Hanoi

Thi Tuu Tran

Trường ĐH Nguyễn Tất Thành

Trung Sy

Vietnam Academy of Science and Technology

Hong-Tham Nguyen Thi

Trường ĐH Nguyễn Tất Thành

Kim-Oanh Nguyen Thi

Trường ĐH Nguyễn Tất Thành

Hoa Nguyen Thi Hong

Nong Lam University Ho Chi Minh City

Thi Kim Ngan Tran

Trường ĐH Nguyễn Tất Thành

Hao Le Quoc

Nong Lam University Ho Chi Minh City

Bich Thuy Tran

Industrial University of Ho Chi Minh City

Thi Cam Quyen Ngo

Trường ĐH Nguyễn Tất Thành

Cooperative Institutions

Trường ĐH Nguyễn Tất Thành

Vietnam Academy of Science and Technology

Nong Lam University Ho Chi Minh City

Vietnam National University, Hanoi

Ho Chi Minh City University of Technology

Vietnam National University Ho Chi Minh City

Université de Sherbrooke

Le Hong Phong High School for the Gifted

Van Lang University

Industrial University of Ho Chi Minh City

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Synthesis of activated carbon from cotton plant by-products in Vietnam to remove methylene blue and congo red

Journal of Chemical Research (2024)

Hoa Nguyen Thi Hong Hao Le Quoc Thi Cam Quyen Ngo Thi Tuu Tran Chi Sy Phung

Activated carbon from cottonwood was synthesized by microwave-assisted method with activator NaOH. Activated carbon from cottonwood has a rough surface like coral, an amorphous structure with surface functional groups such as O–H, C–H, C=C, and C–O. The surface area and pore size were recorded at 395.48 m 2 g −1 and 2.35 nm. The adsorption capacity of activated carbon from cottonwood was evaluated on two groups of anion dyes (congo red) and cation dye (methylene blue) to evaluate the influencing factors and predict the adsorption process. The best adsorption conditions were recorded for methylene blue (time: 30 min, temperature: 30 °C, pH: 10, activated carbon from cottonwood of 1 g L −1 , methylene blue of 80 mg L −1 , and adsorption capacity of 30.875 mg g −1 ) and congo red (time: 150 min, temperature: 60 °C, pH: 2, activated carbon from cottonwood of 2 g L −1 , congo red of 100 mg L −1 , and adsorption capacity of 45.97 mg g −1 ), respectively. The adsorption process was consistent with the Bangham kinetic and Dubinin–Radushkevich (D–R) isotherm model. The process of evaluating reusability shows that activated carbon from cottonwood can be reused 4 times.

Congo red

Methylene blue

10.1177/17475198241255288

Cite

Citations (0)

Enhanced Degradation of Rhodamine B by Metallic Organic Frameworks Based on NH2-MIL-125(Ti) under Visible Light

Materials (2021)

Hong-Tham Nguyen Thi Thi Kim Ngan Tran Ngoc Bich Hoang Bich Thuy Tran Trung Sy

Samples of the bimetallic-based NH2-MIL-125(Ti) at a ratio of Mn+/Ti4+ is 0.15 (Mn+: Ni2+, Co2+ and Fe3+) were first synthesized using the solvothermal method. Their fundamental properties were analyzed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectra, scanning electron microscopy (SEM), N2 adsorption-desorption measurements, and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). The as-acquired materials were used as high-efficiency heterogeneous photocatalysts to remove Rhodamine B (RhB) dye under visible light. The results verified that 82.4% of the RhB (3 × 10-5 M) was degraded within 120 min by 15% Fe/Ti-MOFs. Furthermore, in the purpose of degrading Rhodamine B (RhB), the rate constant for the 15% Fe/Ti-MOFs was found to be 2.6 times as fast as that of NH2-MIL-125(Ti). Moreover, the 15% Fe/Ti-MOFs photocatalysts remained stable after three consecutive cycles. The trapping test demonstrated that the major active species in the degradation of the RhB process were hydroxyl radicals (HO∙) and holes (h+).

Rhodamine B

Bimetallic strip

Visible spectrum

Degradation

10.3390/ma14247741

Cite

Citations (31)