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24 results on '"Dieu, Nguyen Thi"'

2. A Facile Synthesis of MoS2/g-C3N4 Composite as an Anode Material with Improved Lithium Storage Capacity

Author

Ha Tran Huu, Xuan Dieu Nguyen Thi, Kim Nguyen Van, Sung Jin Kim, and Vien Vo

Subjects
MoS2, g-C3N4, MoS2/g-C3N4 composite, anode materials, lithium-ion battery, Technology, Electrical engineering. Electronics. Nuclear engineering, TK1-9971, Engineering (General). Civil engineering (General), TA1-2040, Microscopy, QH201-278.5, Descriptive and experimental mechanics, QC120-168.85
Abstract

The demand for well-designed nanostructured composites with enhanced electrochemical performance for lithium-ion batteries electrode materials has been emerging. In order to improve the electrochemical performance of MoS2-based anode materials, MoS2 nanosheets integrated with g-C3N4 (MoS2/g-C3N4 composite) was synthesized by a facile heating treatment from the precursors of thiourea and sodium molybdate at 550 °C under N2 gas flow. The structure and composition of MoS2/g-C3N4 were confirmed by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, infrared spectroscopy, X-ray photoelectron spectroscopy, thermogravimetric analysis and elemental analysis. The lithium storage capability of the MoS2/g-C3N4 composite was evaluated, indicating high capacity and stable cycling performance at 1 C (A·g−1) with a reversible capacity of 1204 mA·h·g−1 for 200 cycles. This result is believed the role of g-C3N4 as a supporting material to accommodate the volume change and improve charge transport for nanostructured MoS2. Additionally, the contribution of the pseudocapacitive effect was also calculated to further clarify the enhancement in Li-ion storage performance of the composite.

Published
2019
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6. A Facile Synthesis of MoS2/g-C3N4 Composite as an Anode Material with Improved Lithium Storage Capacity

Author

Vien Vo, Ha Tran Huu, Sung Jin Kim, Kim Nguyen Van, and Xuan Dieu Nguyen Thi

Subjects
Thermogravimetric analysis, Materials science, Scanning electron microscope, Sodium molybdate, Composite number, chemistry.chemical_element, 02 engineering and technology, lithium-ion battery, 010402 general chemistry, lcsh:Technology, 01 natural sciences, Article, Lithium-ion battery, anode materials, chemistry.chemical_compound, MoS2/g-C3N4 composite, X-ray photoelectron spectroscopy, g-C3N4, General Materials Science, lcsh:Microscopy, lcsh:QC120-168.85, lcsh:QH201-278.5, lcsh:T, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Anode, Chemical engineering, chemistry, lcsh:TA1-2040, MoS2, lcsh:Descriptive and experimental mechanics, Lithium, lcsh:Electrical engineering. Electronics. Nuclear engineering, lcsh:Engineering (General). Civil engineering (General), 0210 nano-technology, lcsh:TK1-9971
Abstract

The demand for well-designed nanostructured composites with enhanced electrochemical performance for lithium-ion batteries electrode materials has been emerging. In order to improve the electrochemical performance of MoS2-based anode materials, MoS2 nanosheets integrated with g-C3N4 (MoS2/g-C3N4 composite) was synthesized by a facile heating treatment from the precursors of thiourea and sodium molybdate at 550 &deg, C under N2 gas flow. The structure and composition of MoS2/g-C3N4 were confirmed by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, infrared spectroscopy, X-ray photoelectron spectroscopy, thermogravimetric analysis and elemental analysis. The lithium storage capability of the MoS2/g-C3N4 composite was evaluated, indicating high capacity and stable cycling performance at 1 C (A&middot, g&minus, 1) with a reversible capacity of 1204 mA&middot, h&middot, 1 for 200 cycles. This result is believed the role of g-C3N4 as a supporting material to accommodate the volume change and improve charge transport for nanostructured MoS2. Additionally, the contribution of the pseudocapacitive effect was also calculated to further clarify the enhancement in Li-ion storage performance of the composite.

Published
2019
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8. Artificial intelligence trends for data analytics using machine learning and deep learning approaches.

Author

Dieu, Nguyen Thi, Gayathri Devi, K. G., and Rath, Mamata

Subjects
Artificial intelligence -- Industrial applications, Diagnosis -- Data processing, Machine learning -- Industrial applications
Abstract

Summary: "This book focuses on the implementation of various elementary and advanced approaches in AI that can be used in various domains to solve real-time decision-making problems"-- Provided by publisher.

Published
2021

9. Graphitic g-C3N4-WO3Composite: Synthesis and Photocatalytic Properties

Author

Viet Nga Nguyen Thi, Phi Hung Nguyen, An Tran Doan, Vien Vo, Sung Jin Kim, and Xuan Dieu Nguyen Thi

Subjects
Materials science, Composite number, General Chemistry, law.invention, chemistry.chemical_compound, chemistry, Chemical engineering, X-ray photoelectron spectroscopy, law, Photocatalysis, Calcination, Orthorhombic crystal system, Photodegradation, Melamine, Visible spectrum
Abstract

Graphitic g-C3N4-WO3 composite was synthesized simply by decomposing melamine in the presence of WO3 at 500 o C. The obtained material was characterized by XRD, SEM, IR and XPS. The results showed that the as-prepared composite exhibits orthorhombic WO3 phase coated by g-C3N4 and the g-C3N4 decomposed completely with N-doped WO3 remaining at elevated calcination temperatures. The photocatalytic activity of the composite was evaluated by the photodegradation of methylene blue under visible light. An enhancement in photocatalytic activity for the graphitic g-C3N4-WO3 composite compared to the conventional nitrogendoped WO3 was observed, which can be attributed to the presence of g-C3N4 in the material.

Published
2014

10. Tonkin Gulf and the Escalation of the Vietnam War

Author

Dieu, Nguyen Thi

Subjects
Tonkin Gulf and the Escalation of the Vietnam War (Book) -- Book reviews, Books -- Book reviews, International relations, Regional focus/area studies
Published
1997

16. Influence of ammonia on properties of TiO2‐MgFe2O4as high visible‐light active photocatalysts for the degradation of Rhodamine B

Author

Nha Khanh, Dang Nguyen, Lin, Hoang Ngoc, Mai Tho, Nguyen Thi, Nhat Ha, Ho Nguyen, Huy, Vu Quang, Phuong Dieu, Nguyen Thi, Huy, Do Manh, Dat, Duong Phuoc, and Kim Phuong, Nguyen Thi

Abstract

The influence of ammonia on TiO2‐MgFe2O4catalysts synthesized via a hydrolysis and co‐precipitation, followed by calcination at 500°C, was studied. Two different catalysts, TiO2‐MgFe2O4(Am) and TiO2‐MgFe2O4(W), were prepared using Ti‐precursors, which were synthesized by the hydrolysis of Ti‐butoxide with and without ammonia. The resulting TiO2‐MgFe2O4catalysts were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), specific surface area measurements, X‐ray diffraction, and UV‐vis diffuse reflectance techniques. It was revealed that strong electronic coupling exists between the TiO2and MgFe2O4components within the TiO2‐MgFe2O4catalysts. Photocatalytic activity toward Rhodamine B (RhB) was investigated in aqueous solution under visible light irradiation. TiO2‐MgFe2O4(W) was found to be an effective catalyst and had several advantages over TiO2‐MgFe2O4(Am). These results clearly highlight that ammonia had a significant influence on the photocatalytic activity of the TiO2‐MgFe2O4catalysts. Therefore, the results reported herein indicate that TiO2‐MgFe2O4is a green, low‐cost, and highly efficient photocatalyst for environmental remediation.

Published
2018
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19. Graphitic g-C3N4-WO3 Composite: Synthesis and Photocatalytic Properties.

Author

An Tran Doan, Xuan Dieu Nguyen Thi, Phi Hung Nguyen, Viet Nga Nguyen Thi, Sung Jin Kim, and Vien Vo

Subjects
*TUNGSTEN oxides, *MELAMINE, *PHOTOCATALYSIS, *METHYLENE blue, *CHEMICAL decomposition
Abstract

Graphitic g-C3N4-WO3 composite was synthesized simply by decomposing melamine in the presence of WO3 at 500°C. The obtained material was characterized by XRD, SEM, IR and XPS. The results showed that the as-prepared composite exhibits orthorhombic WO3 phase coated by g-C3N4 and the g-C3N4 decomposed completely with N-doped WO3 remaining at elevated calcination temperatures. The photocatalytic activity of the composite was evaluated by the photodegradation of methylene blue under visible light. An enhancement in photocatalytic activity for the graphitic g-C3N4-WO3 composite compared to the conventional nitrogendoped WO3 was observed, which can be attributed to the presence of g-C3N4 in the material. [ABSTRACT FROM AUTHOR]

Published
2014
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20. Vietnam - Vietnam's Economic Policy since 1975. By Vo Nhan Tri. Singapore: Institute of Southeast Asian Studies, 1990. Pp. xii, 253. Tables, Notes. - Doi Moi: Economic Reforms and Development Policies in Vietnam. Edited by Per Ronnas and Örjan Sjöberg. Stockholm: Swedish International Development Authority, 1991. Tables, Notes. - Socio-Economic Development in Vietnam: The Agenda for the 1990s. Edited by Per Ronnas and Örjan SjÖberg. Stockholm: Swedish International Development Authority, 1991. Tables.

Author

Dieu, Nguyen Thi, primary

Published
1993
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22. Book reviews.

Author

Dieu, Nguyen Thi

Subjects
VIETNAM'S Economic Policy Since 1975 (Book), DOI Moi (Book), SOCIO-Economic Development in Vietnam: The Agenda for the 1990s (Book)
Abstract

Reviews the books `Vietnam's Economic Policy since 1975,' by Vo Nhan Tri, `Doi Moi: Economic Reforms and Development Policies in Vietnam,' edited by Per Ronnas and Orjan Sjoberg, and `Socio-Economic Development in Vietnam: The Agenda for 1990s,' edited by Per Ronnas and Orjan Sjoberg.

Published
1993

23. Book reviews.

Author

Dieu, Nguyen Thi

Subjects
TONKIN Gulf & the Escalation of the Vietnam War (Book)
Abstract

Reviews the book entitled `Tonkin Gulf and the Escalation of the Vietnam War,' by Edwin E. Moise.

Published
1997

24. Ānanda.

Author

Dieu, Nguyen Thi

Subjects
Ānanda, fl. 6th century B.C.
Abstract

Indian disciple and personal attendant of the Buddha. There is very little personal information concerning the early life of Ānanda (AH-nuhn-duh). According to Buddhist tradition, since he was born on the day when Siddhārtha Gautama reached enlightenment and became the Buddha, Ānanda, which means “Rejoicing,” was thus named by his elated father. Ānanda belonged to the warrior caste, within the same Śākya tribal confederation as the Buddha, of the Gautama clan in the kingdom of Kapilavastu, now in southern Nepal. He was the Buddha’s first cousin, as his father, King Suklodana, was the younger brother of the Buddha’s father, King Śuddhodana. It is said that Ānanda’s father initially did not want him to become the Buddha’s disciple, and that he thus sought to keep his son from knowing about the Buddha’s presence. Eventually, on encountering the Buddha on the occasion of the Buddha’s return to his father’s kingdom, young Ānanda decided to follow the Buddha, thus growing up within the Saṅgha (the Buddhist community) and later becoming a bhikkhu (monk).

Published
2023

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