|
1
|
Lins A, Jerônimo AG, Barbosa R, Neves L, Trigueiro P, Almeida LC, Osajima JA, Pereira FA, Peña-Garcia RR. Facile Synthesis of Ni-Doped ZnO Nanoparticles Using Cashew Gum: Investigation of the Structural, Optical, and Photocatalytic Properties. Molecules 2023; 28:7772. [PMID: 38067502 PMCID: PMC10708073 DOI: 10.3390/molecules28237772] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 11/17/2023] [Accepted: 11/21/2023] [Indexed: 04/13/2024] Open
Abstract
This work adopted a green synthesis route using cashew tree gum as a mediating agent to obtain Ni-doped ZnO nanoparticles through the sol-gel method. Structural analysis confirmed the formation of the hexagonal wurtzite phase and distortions in the crystal lattice due to the inclusion of Ni cations, which increased the average crystallite size from 61.9 nm to 81.6 nm. These distortions resulted in the growth of point defects in the structure, which influenced the samples' optical properties, causing slight reductions in the band gaps and significant increases in the Urbach energy. The fitting of the photoluminescence spectra confirmed an increase in the concentration of zinc vacancy defects (VZn) and monovacancies (Vo) as Zn cations were replaced by Ni cations in the ZnO structure. The percentage of VZn defects for the pure compound was 11%, increasing to 40% and 47% for the samples doped with 1% and 3% of Ni cations, respectively. In contrast, the highest percentage of VO defects is recorded for the material with the lowest Ni ions concentration, comprising about 60%. The influence of dopant concentration was also reflected in the photocatalytic performance. Among the samples tested, the Zn0.99Ni0.01O compound presented the best result in MB degradation, reaching an efficiency of 98.4%. Thus, the recovered material underwent reuse tests, revealing an efficiency of 98.2% in dye degradation, confirming the stability of the photocatalyst. Furthermore, the use of different inhibitors indicated that •OH radicals are the main ones involved in removing the pollutant. This work is valuable because it presents an ecological synthesis using cashew gum, a natural polysaccharide that has been little explored in the literature.
Collapse
Affiliation(s)
- Alexsandro Lins
- Unidade Acadêmica do Cabo de Santo Agostinho, Programa de Pós-Graduação em Engenharia Física, Universidade Federal Rural de Pernambuco, Cabo de Santo Agostinho 52171-900, PE, Brazil; (A.L.); (A.G.J.); (R.B.); (L.N.); (P.T.); (F.A.P.)
| | - Aimee G. Jerônimo
- Unidade Acadêmica do Cabo de Santo Agostinho, Programa de Pós-Graduação em Engenharia Física, Universidade Federal Rural de Pernambuco, Cabo de Santo Agostinho 52171-900, PE, Brazil; (A.L.); (A.G.J.); (R.B.); (L.N.); (P.T.); (F.A.P.)
| | - Ricardo Barbosa
- Unidade Acadêmica do Cabo de Santo Agostinho, Programa de Pós-Graduação em Engenharia Física, Universidade Federal Rural de Pernambuco, Cabo de Santo Agostinho 52171-900, PE, Brazil; (A.L.); (A.G.J.); (R.B.); (L.N.); (P.T.); (F.A.P.)
| | - Luan Neves
- Unidade Acadêmica do Cabo de Santo Agostinho, Programa de Pós-Graduação em Engenharia Física, Universidade Federal Rural de Pernambuco, Cabo de Santo Agostinho 52171-900, PE, Brazil; (A.L.); (A.G.J.); (R.B.); (L.N.); (P.T.); (F.A.P.)
| | - Pollyana Trigueiro
- Unidade Acadêmica do Cabo de Santo Agostinho, Programa de Pós-Graduação em Engenharia Física, Universidade Federal Rural de Pernambuco, Cabo de Santo Agostinho 52171-900, PE, Brazil; (A.L.); (A.G.J.); (R.B.); (L.N.); (P.T.); (F.A.P.)
| | - Luciano C. Almeida
- Departamento de Engenharia Química, Universidade Federal de Pernambuco, Recife 50670-901, PE, Brazil;
| | - Josy A. Osajima
- Universidade Federal de Piauí, Teresina 64049-550, PI, Brazil;
| | - Francisca A. Pereira
- Unidade Acadêmica do Cabo de Santo Agostinho, Programa de Pós-Graduação em Engenharia Física, Universidade Federal Rural de Pernambuco, Cabo de Santo Agostinho 52171-900, PE, Brazil; (A.L.); (A.G.J.); (R.B.); (L.N.); (P.T.); (F.A.P.)
- Universidade Federal de Piauí, Teresina 64049-550, PI, Brazil;
| | - Ramón R. Peña-Garcia
- Unidade Acadêmica do Cabo de Santo Agostinho, Programa de Pós-Graduação em Engenharia Física, Universidade Federal Rural de Pernambuco, Cabo de Santo Agostinho 52171-900, PE, Brazil; (A.L.); (A.G.J.); (R.B.); (L.N.); (P.T.); (F.A.P.)
- Universidade Federal de Piauí, Teresina 64049-550, PI, Brazil;
| |
Collapse
|
|
2
|
Luu TVH, Nguyen QB, Nguyen THC, Pham NC, Duong TL, Le BH, Nguyen VNM, Vu MC, Pham NN, Dao NN, Nguyen TK. One-pot hydrothermal preparation of capsule-like nanocomposites of C/Ce-co-doped ZnO supported on graphene to enhance photodegradation. NEW J CHEM 2023. [DOI: 10.1039/d2nj04937f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Nanocapsule composites of C/Ce-co-doped ZnO supported on graphene synthesized by a one-pot hydrothermal method with a band gap of 2.72 eV were used to enhance the photodegradation of methylene blue under various conditions.
Collapse
Affiliation(s)
- Thi Viet Ha Luu
- Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, 700000, Vietnam
| | - Quang Bac Nguyen
- Institute of Material Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
| | - Thi Ha Chi Nguyen
- Institute of Material Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
| | - Ngoc Chuc Pham
- Institute of Material Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
| | - Thi Lim Duong
- Institute of Geography, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
| | - Bao Hung Le
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
- Vietnam – Russian Tropical Centre, 63 Nguyen Van Huyen, Cau Giay, Hanoi 100000, Vietnam
| | - Vu Ngoc Mai Nguyen
- Faculty of Natural Sciences, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, Binh Dinh 590000, Vietnam
| | - Minh Chau Vu
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
- Vietnam – Russian Tropical Centre, 63 Nguyen Van Huyen, Cau Giay, Hanoi 100000, Vietnam
| | - Ngo Nghia Pham
- Institute of Environmental Engineering and Management, University of Witten/Herdecke, Alfred-Herrhausen-Str. 44, 58455 Witten, Germany
- Faculty of Chemistry, VNU University of Science, 19 Le Thanh Tong, Hoan Kiem, Hanoi 100000, Vietnam
| | - Ngoc Nhiem Dao
- Institute of Material Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
| | - Trung Kien Nguyen
- Institute of Material Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
| |
Collapse
|
|
3
|
Aquí-Romero F, Santos-Sauceda I, Ramírez-Bon R. Electrospun ZnO nanofibers thin films for the methylene blue degradation driven by natural sunlight. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|