Effect of hexamethylene tetramine (HMTA) surfactant on the structural characteristics and photocatalytic activity of Cu-ZnO nanoparticle materials fabricated by the hydrothermal method Tập 10 Số 3 - Trang 34-39 - 2021
Nguyen Thi Tuyet Mai, Dang Thi Minh Hue, Tran Thi Thu Huyen, Nguyen Thi Lan, Nguyen Kim Nga, Trinh Xuan Anh, Ta Ngoc Dung, Huynh Dang Chinh, Nguyen Cong Tu, Luu Thi Lan Anh
The experiment had fabricated and studied the properties of ZnO and Cu doped ZnO nanoparticles with the change of the hexamethylene tetramine surfactant content (HMTA) with molar ratio Zn2 +: HMTA = 1: x; x = 1, 2 and 4. The methods were used to study the characteristics of materials such as: XRD, raman shift, SEM, reflection spectrum. The results show that, when the content of surfactant HMTA inc...... hiện toàn bộ
#ZnO nanomaterials #Cu doped ZnO #photocatalysts #HMTA #ultraviolet irradiation
Synthesis of Cu2O and Cu2O-C3N4 nanomaterials for the photodegradation of organic dyes under visible light irradiation Tập 10 Số 3 - Trang 65-70 - 2021
Nguyen Thi Lan, Nguyen Thi Tuyet Mai, Dang Thi Minh Hue, Tran Thi Thu Huyen, Nguyen Kim Nga, Trinh Xuan Anh, Ta Ngoc Dung, Huynh Dang Chinh, Nguyen Cong Tu, Luu Thi Lan Anh
These experiment fabricated C3N4 powdermaterials by the calcinational method and fabricated Cu2O, Cu2O-3%C3N4, Cu2O-5%C3N4 nanomaterials by the hydrothermal method. The powdermaterials characteristics were studied by methods such as: X-ray diffraction (XRD); raman shift; scanning electron microscope (SEM); UV-vis solid absorption spectra. The photocatalytic activity of samples was studied by decom...... hiện toàn bộ
#Cu2O #C3N4 #octahedral Cu2O-C3N4 crystals #photocatalysts #visible light irradiation
Effect of iron doping concentration on the structure and photocatalytic activity of ZnO nanosheets under visible light irradiation Tập 11 Số 2 - Trang 8-15 - 2022
Nguyen Van Hung, Bui Thi Minh Nguyet
Undoped and Fe-doped ZnO nanosheets have been successfully synthesized by hydrothermal method using zinc acetate as the source of Zn2+, iron(III) nitrate as the doping source, urea as media to control the solution pH and polyethylene glycol as structure-directing agents. The obtained materials were characterized by means of XRD, TEM, BET, FT-IR and UV-Vis-DRS. The results show that ZnO has a...... hiện toàn bộ
#Fe-doped ZnO #nanosheets #hydrothermal synthesis #methylene blue #photodegradation
Study on the synthesis of heterostructure MoS2/TiO2 material for photocatalytic degradation of 2,4-dichlorophenoxyacetic acid Tập 10 Số 3 - Trang 113-120 - 2021
Nguyen Hoang Hao, Dao Thi Tuan, Phung Thi Lan, Nguyen Thi Mo, Nguyen Ngoc Ha, Nguyen Thi Thu Ha, Le Minh Cam
Nanoflower MoS2, nanowire TiO2(NNW) and 3D MoS2/TiO2 nano-heterostructure have been synthesized successfully by simple typical hydrothermal reaction method followed by 200oC calcination under an argon atmosphere. The prepared samples are characterized in detail by XRD, FESEM, UV-vis DRS, EDX and BET. The results suggest that the TiO2 NNW is successfully coupled with MoS2 to form the heterojunction...... hiện toàn bộ
#2 #4-D #heterostructure #nanoflower MoS2 #nanowire TiO2
Synthesis of Mo-Modified TiO2 Material with Enhanced Photocatalytic activity Tập 10 Số 1S - Trang 56-62 - 2021
Tran Huu Ha, Ngo Van Ngoc, Vo Vien, Nguyen Thi Lan
The Mo-modified TiO2 was synthesized via facile impregnation combined with pyrolysis of mixtures in several different initial mass ratios of precursors as mTi(OH)4/m(NH4)6Mo7O24.4H2O equaling 5, 10 and 15 in 500 oC for an hour. The as-prepared samples, denoted as n-MT-500 within n for the initial mass ratio of precursors, were characterized by X-ray diffraction, scanning electron microscopy, ultra...... hiện toàn bộ
#TiO2 #MoO3 #photocatalyst #Ilmenite #modified-TiO2
Effect of hexamethylene tetramine (HMTA) surfactant on the structural characteristics and photocatalytic activity of Cu-ZnO nanoparticle materials fabricated by the hydrothermal method
- 2021
Mai Nguyen Thi Tuyet, Hue Dang Thi Minh, Huyen Tran Thi Thu, Lan Nguyen Thi, Nga Nguyen Kim, Anh Trinh Xuan, Dung Ta Ngoc, Chinh Huynh Dang, Tu Nguyen Cong, Anh Luu Thi Lan
The experiment had fabricated and studied the properties of ZnO and Cu doped ZnO nanoparticles with the change of the hexamethylene tetramine surfactant content (HMTA) with molar ratio Zn 2 + : HMTA = 1: x; x = 1, 2 and 4. The methods were used to study the characteristics of materials such as: XRD, raman shift, SEM, reflection spectrum. The results show that, when the content of surfactant HMTA i...... hiện toàn bộ
#ZnO nanomaterials #Cu doped ZnO #photocatalysts #HMTA #ultraviolet irradiation
Nickel nanoparticles supported on titanium oxides nanotubes as an efficient catalyst for hydrodechlorination of 3-chlorophenol Tập 10 Số 4 - Trang 120-124 - 2021
Thanh Thien Co, Thanh Hai Do, Thanh My Nguyen, Dinh Tuan Anh Lu, Thi Duyen Diep, Duong Viet Tan Vo, Thi Yen Nhi Nguyen, Thuan Khiet Trinh Nguyen, Ngoc Thao Nguyen Du, Thien An Nguyen, Pham Anh Vu Ho, Thi Diem Huong Nguyen, Hue Ngan Dai, Tan Phat Vu
Titanium oxides nanotubes (TNTs) were prepared by hydrothermal method and used as nano-support for nickel nanoparticles. Indeed, nickel nanoparticles supported TNTs (Ni-TNTs) were in situ synthesized from nickel salt and TNTs by chemical reduction method using sodium borohydride (NaBH4) as reducing agent. The physio-chemical properties of Ni-TNTs nano-catalysts were fully characterized such as Tra...... hiện toàn bộ
#Hydrodechlorination #nanocatalyst #nickel nanoparticles #titanium oxides nanotubes
In-vitro antifungal activities of silver-copper complex/chitosan (Ag-Cu@CS) nanoparticles synthesized by in-situ encapsulation Tập 10 Số 1S - Trang 24-30 - 2021
Le The Tam, Nguyen Hoa Du, Le Dang Quang, Ho Dinh Quang, Phan Thi Hong Tuyet, Chu Thi Thuy Dung, Tran Thi Ngan, Le Thi Thu Hiep, Tran Quang De
In this study, silver-copper complex/chitosan (Ag-Cu@CS) nanoparticles were successfully synthesized by in-situ encapsulation reduction method. The results show that as-synthesized nanoparticles were quasi spherical in shape with the average diameter of 7.97 nm, well-dispersed particles in water and stable. The test phytopathogenic fungi Sclerotium rolfsii, Magnaporthe oryzae K, Botrytis cinerea, ...... hiện toàn bộ
#silver-copper complex/chitosan #in-situ encapsulation #plant protection
Practical Copper-catalyzed Synthesis of Pyrroles under Solvent Free Condition Tập 11 Số 3 - Trang 54-58 - 2022
Tuan Thanh Dang, Nguyen Thi Son, Hien Nguyen, Cu Hong Hanh, Nguyen Thi Thanh Chi, Tran Quang Hung, Nguyen Thi Thanh Huyen, Ngo Thi Thuan, Dang Van Do
An efficient and practical method for the synthesis of pyrroles by Cu-catalyzed multicomponent reaction has been described. A range of highly functionalized pyrroles was prepared in good yields under solvent free condition.
#Cu catalysis #Pyrrole synthesis #N-heterocyclic carbene #Multicomponent reaction #Sustainable process
Photocatalytic degradation of Rhodamine-B under visible light region by ZnO nanoparticles loaded on activated carbon made from longan seed biomass Tập 9 Số 3 - Trang 1-8 - 2021
Hung Nguyen Van, Nguyet Bui Thi Minh, Linh Bui Thi Thuy, Nghi Nguyen Huu, Tuoi Nguyen Thanh, Tien Nguyen Anh, Son Le Lam
In the present study, the synthesis of ZnO /LSAC through pyrolysis of the carbonized material prepared from longan seed, zinc acetate in alkaline medium. The obtained materials was characterized by means of XRD, SEM, TEM, BET and UV-Vis-DRS. The XRD patterns of ZnO /LSAC nanocomposites were assigned to wurtzite structure of ZnO with crystallite size about 15 to 30 nm. SEM and TEM ...... hiện toàn bộ
#Zinc oxide #Photodegradation #Longan seed #Biomass carbon #Rhodamine-B