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Can I read Crystallization Pathways and Evolution of Morphologies and Structural Defects of α-MnO~2~ under Air Annealing on EtoBox?
Crystallization Pathways and Evolution of Morphologies and Structural Defects of α-MnO~2~ under Air Annealing by Van-Phuc Dinh; Tuyen Anh Luu; Krzysztof Siemek; Denis P. Kozlenko; Khiem Hong Le; Ngoc Toan Dang; Tiep Van Nguyen; Nguyen Le Phuc; Tap Duy Tran; Phuc T. Phan; Son T. Lo; Kiet Anh Tuan Hoang; Thanh Khan Dinh; Ngoc Thuy Luong; Ngoc Chung Le; Ngoc-Tuan Nguyen; Thien-Hoang Ho; Xuan Dong Tran; Phong D. Tran; Hung Q. Nguyen is a Materials Science article available to read on EtoBox.
What is Crystallization Pathways and Evolution of Morphologies and Structural Defects of α-MnO~2~ under Air Annealing about?
Manganese dioxide nanomaterials have wide applications in many areas from catalysis and Li-ion batteries to gas sensing. Understanding the crystallization pathways, morphologies, and formation of defects in their structure is particularly important but still a challenging issue. Herein, we employed an arsenal of X-ray diffraction (XRD), scanning electron microscopy (SEM), neutron diffraction, positron annihilation spectroscopies, and ab initio calculations to investigate the evolution of the morphology and structure of α-MnO 2 nanomaterials prepared via reduction of KMnO 4 solution with C 2 H 5 OH prior to being annealed in air at 200-600 °C. We explored a novel evolution that α-MnO 2 nucleation can be formed even at room temperature and gradually developed to α-MnO 2 nanorods at above 500 °C. We also found the existence of H + or K + ions in the [1 × 1] tunnels of α-MnO 2 and observed the simultaneous presence of Mn and O vacancies in α-MnO 2 crystals at low temperatures. Increasing the temperature removed these O vacancies, leaving only the Mn vacancies in the samples.
Who reads Crystallization Pathways and Evolution of Morphologies and Structural Defects of α-MnO~2~ under Air Annealing?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Van-Phuc Dinh; Tuyen Anh Luu; Krzysztof Siemek; Denis P. Kozlenko; Khiem Hong Le; Ngoc Toan Dang; Tiep Van Nguyen; Nguyen Le Phuc; Tap Duy Tran; Phuc T. Phan; Son T. Lo; Kiet Anh Tuan Hoang; Thanh Khan Dinh; Ngoc Thuy Luong; Ngoc Chung Le; Ngoc-Tuan Nguyen; Thien-Hoang Ho; Xuan Dong Tran; Phong D. Tran; Hung Q. Nguyen
- Publisher
- American Chemical Society (ACS)
- Published
- 2022
- Language
- EN
- Field
- Materials Science (Physical Sciences)