Vietnam Journal of Science, Technology and Engineering's Vol. 59 Number 3 is now available to all readers. 

The cover illustrates the schematic illustration of the synthesis of alpha-NaYF4:Yb3+/Er3+/PVP/MOF multilayer nanocrystals. The precursor PVP-capped alpha-NaYF4:Yb3+/Er3+ nanospheres were used as the templates for preparing the alpha- NaYF4:Yb3+/Er3+/PVP/MOFs multilayer nanocrystals with a self-template method. The UCL spectra studies demonstrated that the integrated intensity ratio of green to red emissions increased from 0.13 to 1.01 when adding the layers of PVP, PVP/ZIF-8 or PVP/MIL-100 on the surface of the alpha- NaYF4:Yb3+/Er3+ nanoparticles.

Please see the article "Synthesis, characterization and up-conversion luminescence properties of alpha-NaYF4:Yb3+/Er3+/PVP/MOF multilayer nanocrystals" in pages 79-84 of this issue for more details.

Published: 2017-09-27

Optimization of congo red removal by adsorption onto NiFe2O4/GO nanocomposite

Van Thuan Tran, Van Thinh Pham, Thi Phuong Quynh Bui, Duy Trinh Nguyen, Long Giang Bach (Author)

3-6

Studies on thermo-oxidative degradation of synthetic rubbers 1-4 and 1-2 polybutadienes

Quoc Hung Nguyen, Van Hai Chu, Ngoc Cuong Hoang, Van Huong Pham (Author)

7-13

Comparison of the adsorption of Zn(II) on alpha- and gamma-MnO2 nanostructures

Van Phuc Dinh, Ngoc Chung Le, Ngoc Tuan Nguyen, Thien Hoang Ho, Van Dong Nguyen (Author)

14-19

Immobilization of ZnO nanoparticles on fluorinated perlite granules for the photocatalytic degradation of methylene blue

Nguyet Anh Pham, Thi Huynh Nhu Nguyen, Tuan Ngoc Tran, Quy Tu Nguyen, Tien Khoa Le (Author)

25-31

Promising rice mutants with high yields, good grain quality, and disease resistance due to irradiation technology

Duy Duong Tran, Manh Ha Nguyen, Duy Quy Tran, Thi Dung Quan, Hoang Dung Tran (Author)

48-52

Establishment of ultrasensitive PCR assay targeting cell-free EBV DNA for early detection of nasopharyngeal carcinoma

Huu Tho Ho, Nguyen Quynh Anh Vu, Tram Anh Do, Dinh Ung Nguyen, Thi Thu Hang Dinh, Tien Sy Bui, Dao Chinh Hoang, Minh Ky Le, Truong Phong Vu, Thanh Tung Ngo, Kim Luu Nguyen, Truong Sinh Luu, Van Ba Nguyen, Anh Son Ho, Van Luong Hoang, Duc Thuan Nghiem (Author)

53-59

Synthesis, characterization and up-conversion luminescence properties of α-NaYF4:Yb3+/Er3+/PVP/MOFs multilayer nanocrystals

Thi Kieu Giang Lam, Lukasz Marciniak, Quang Huy Tran, Manh Tien Dinh, Duc Chinh Vu, Vu Nguyen, Thu Huong Tran, Thi Khuyen Hoang, Thanh Huong Nguyen, Duc Roan Pham, Thanh Binh Nguyen, Quoc Minh Le (Author)

79-84