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4. Contributors

Author

Abdelkareem, Mohamed A.A., primary, Ahmadi, Younes, additional, Akhil, M.G., additional, Akitsu, Takashiro, additional, Alarcón, Edwin A., additional, Alex, Kevin V., additional, Alexis, S. John, additional, Ali, Mohamed Kamal Ahmed, additional, Aliyeva, Nargiz, additional, Amiri, Sahar, additional, AngelinThangakani, J., additional, de Araújo Almeida, Adriana, additional, Arlindo, Mauricio Zimmer Ferreira, additional, Arnce, Mark, additional, Arsha, A.G., additional, Azizi, Nangialai, additional, Bahrani, Sonia, additional, Barbosa, Ana Paula Michels, additional, Bastian, Martin, additional, Baudrit, Benjamin, additional, Behbudi, Gity, additional, Behera, Ajit, additional, Behera, Asit, additional, Biswakarma, Nishant, additional, Camargo, Emerson Rodrigues, additional, Chandar Shekar, B., additional, Choi, Jonghyun, additional, da Silva, Elisangela Pacheco, additional, da Silva Ribeiro, Lucas, additional, Deka, Ajanta, additional, Deka, Ramesh Ch., additional, Dericiler, Kuray, additional, Dorothy, R., additional, Dubal, Sumit, additional, Elagouz, Ahmed, additional, Ereath Beeran, Ansar, additional, Eskandari, Mostafa, additional, Felipe, Carlos Alberto Severo, additional, Ferrer, Matheus, additional, Fındık, Fehim, additional, Fragal, Vanessa Hafemann, additional, Furmuly, Mubasher, additional, Gajević, Sandra, additional, Gallego-Villada, Luis A., additional, Gasso, Sahil, additional, Gorup, Luiz Fernando, additional, Gour, Nand Kishor, additional, Gupta, Ram K., additional, Hammer, Peter, additional, Hochrein, Thomas, additional, Ibraheem, Shumaila, additional, Imran, Abu Bin, additional, Ingsel, Tenzin, additional, Jaiswal, Ritesh, additional, Jeyasundari, J., additional, Jouyandeh, Maryam, additional, Kamakshi, K., additional, Karun, Akhil S., additional, Katla, Ramesh, additional, Kaur, Navdeep, additional, Kraus, Eduard, additional, Kumar, Amit, additional, Kumar, Anil, additional, Kumar, Anuj, additional, Kumar, Ashish, additional, Kumar, P.S. Samuel Ratna, additional, Lakal, Narendra, additional, Lakshmi, V., additional, Langer, Maurice, additional, Leicht, Heinrich, additional, Lokhande, P.E., additional, Madadi, Mina, additional, Mahajan, Aman, additional, Manoj, Visakh, additional, Mashinini, P.M., additional, Menceloglu, Yusuf Ziya, additional, Miladinović, Slavica, additional, Moreira, Mario Lucio, additional, Mousavi, Seyyed Mojtaba, additional, Nguyen, Tuan Anh, additional, Ogrodowski, Christiane Saraiva, additional, Okan, Burcu Saner, additional, de Oliveira Lima, Antônia Millena, additional, Özacar, Mahmut, additional, Özsoy, Mehmet İskender, additional, Pinto, Alexandre Henrique, additional, Poornima Vijayan, P., additional, Popalzai, Nasrin Raji, additional, de Queiroz, Maria Nayane, additional, Raag, L. Ajay, additional, Rajan, T.P.D., additional, Rajendran, Susai, additional, Rathish Kumar, S., additional, Rathore, Deepshikha, additional, Renugadevi, N., additional, Reza Saeb, Mohammad, additional, Romanelli, Gustavo P., additional, Rubira, Adley Forti, additional, Sadeghi, Hadi Mohammadjafari, additional, Said, Zafar, additional, Saikia, Sudakhina, additional, Sas, Hatice S., additional, Sathish, S., additional, Sekhar, K.C., additional, Sequinel, Thiago, additional, Sheela, C. Dorothy, additional, Silva, J.P.B., additional, Silva, Rafael, additional, Sohail, Maham, additional, Sohal, Manreet Kaur, additional, Somadas Radhamany, Archana, additional, de Souza, Felipe M., additional, de Souza, Thiago Augusto Carneiro, additional, de Souza Neto, Francisco Nunes, additional, Stojanović, Blaža, additional, Susan, Md. Abu Bin Hasan, additional, Thakur, Abhinay, additional, Tiwari, Arun Kumar, additional, Trentin, Andressa, additional, Türk, Serbülent, additional, Uvida, Mayara Carla, additional, Winkler, Manuel Edgardo Gomez, additional, Xianjun, Hou, additional, Yadav, Anshul, additional, Yasin, Ghulam, additional, and Yeganeh, Mahdi, additional

Published
2022
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5. Self-healing nanocoatings

Author

Trentin, Andressa, primary, Uvida, Mayara Carla, additional, de Araújo Almeida, Adriana, additional, de Souza, Thiago Augusto Carneiro, additional, and Hammer, Peter, additional

Published
2022
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17. Contributors

Author

Ahmad, Sharif, primary, Ahmadi, Younes, additional, Ajekwene, Kingsley Kema, additional, Al-Hashem, Abdulhameed, additional, Alexis, S. John, additional, Ali, Hamid, additional, Alipour, Katayoon, additional, Allahkaram, S.R., additional, Amiri, Sahar, additional, Amiri, Sanam, additional, Anjum, Muhammad Junaid, additional, Arif, Muhammad, additional, Asadi, Najmeh, additional, Assad, Mohammad Ali, additional, Behera, Ajit, additional, Daneshvar, Farhad, additional, Etemad, A., additional, Gavrilović-Wohlmuther, Aleksandra, additional, Ge, Changchun, additional, Govindaraju, M., additional, Hammer, Peter, additional, Harb, Samarah Vargas, additional, Hussain, M. Irfan, additional, Irum, Ayesha, additional, Ismail, Mohammad, additional, Javed, Yasir, additional, Jazaeri Moghadas, Seyed Mohammadali, additional, Jyothi, S., additional, Kakooei, Saeid, additional, Kamalan Kirubaharan, A.M., additional, Kazemi, Fatemeh, additional, Khan, Waheed Qamar, additional, Khan, Muhammad Abubaker, additional, Khosravi, Iman, additional, Kny, Erich, additional, Kumar, Ashish, additional, Kumar, Subhalakshmi Suresh, additional, Kumaran, S. Senthil, additional, Kuppusami, P., additional, Laskos, Andreas, additional, Li, Yongxin, additional, Mallick, P., additional, Marashi, S.M., additional, Mathew, Gincy Marina, additional, Mehtab, Tahira, additional, Mohapatra, S.S., additional, Mortazavi, S.H.H., additional, Naderi, Reza, additional, Naghib, Seyed Morteza, additional, Nasirpouri, Farzad, additional, Nawaz, Somia, additional, Nawaz, Ahmed, additional, Nazari, M.H., additional, Nguyen, Tuan Anh, additional, Omidi, M., additional, Padmanaban, R., additional, Pancrecious, Jerin K., additional, Praveena, J. Maria, additional, Priyadharshini, G. Suganya, additional, Raja, Pandian Bothi, additional, Rajan, T.P.D., additional, Rajendran, Susai, additional, Rathish, R. Joseph, additional, Ratna Kumar, P.S. Samuel, additional, Sajid, Muhammad Munir, additional, Sanaeian, Mohammad-Reza, additional, Sarraf, Hamidreza Torbati, additional, Shahryari, Zahra, additional, Shakeel, Muhammad, additional, Shokouhfar, M., additional, Singh, Gurmeet, additional, Thakur, Abhinay, additional, Trentin, Andressa, additional, Ulaeto, Sarah B., additional, Uvida, Mayara Carla, additional, Vignesh, R. Vaira, additional, Yasin, Ghulam, additional, Yeganeh, Mahdi, additional, and Zhao, Jingmao, additional

Published
2020
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28. Efeitos da presença de óxido de cério em suportes para eletrocatalisadores de paládio

Author

Trentin, Andressa [UNESP], Universidade Estadual Paulista (Unesp), and Batista, Elisete Aparecida [UNESP]

Subjects
Etanol, Eletrocatálise, Metanol, Oxidation, Oxidação, Óxidos de cério
Abstract

Made available in DSpace on 2016-08-12T18:48:45Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-06-23. Added 1 bitstream(s) on 2016-08-12T18:50:59Z : No. of bitstreams: 1 000849805_20170623.pdf: 911886 bytes, checksum: 242c48add348f7334fada8447b99c56f (MD5) Bitstreams deleted on 2017-06-23T13:11:18Z: 000849805_20170623.pdf,. Added 1 bitstream(s) on 2017-06-23T13:12:03Z : No. of bitstreams: 1 000849805.pdf: 2881473 bytes, checksum: 5e5a159f727a1e8c94ecabaefa1314c0 (MD5) Células a combustível são dispositivos eletroquímicos que convertem a energia química em energia elétrica e calor. As DAFCs (Direct alcohol fuel cells) têm sido objeto de muitos estudos alternativos à célula de hidrogênio. Para que as DAFCs operem em grande escala, é de grande importância o desenvolvimento de eletrocatalisadores para as reações de oxidação de álcoois como metanol e etanol, que ocorrem no ânodo da célula a combustível. Neste contexto, este trabalho relata a síntese de nanocatalisadores de paládio suportados em carbono e óxido de cério, a caracterização física dos materiais preparados e a avaliação da atividade catalítica para a oxidação de metanol e etanol. A caracterização física foi realizada utilizando-se as técnicas de difratometria de raios X, microscopia eletrônica de transmissão, espectroscopia de fotoelétrons excitados por raios X e, espectroscopia de absorção de raios X. Os materiais também foram caracterizados eletroquimicamente por voltametria cíclica. A atividade catalítica dos materiais preparados foi estudada através de técnicas eletroquímicas, como voltametria cíclica e cronoamperometria, e também pela técnica espectro-eletroquímica de FTIR in situ, que permite a identificação de produtos e intermediários das reações. Os difratogramas de raios X mostraram que a adição de óxido de cério não modifica a estrutura cristalina do Pd. As imagens de microscopia eletrônica de transmissão permitem afirmar que o método de síntese utilizado gerou nanopartículas de paládio bem dispersas sobre o suporte e com estreita distribuição de tamanhos. Os espectros de absorção de raios X indicaram um preenchimento da banda 4d do paládio com a adição de óxido de cério. Medidas de oxidação de monocamada de CO mostraram que a presença de óxido de cério no suporte não promoveu alteração nos potenciais de picos de... Fuel cells are electrochemical devices that convert chemical energy into electrical energy. The DAFCs (Direct alcohol fuel cells) present as an alternative for hydrogen fuel cells. For the DAFCs operate on a large scale, is of great importance the development of electrocatalysts for oxidation reactions of alcohols as methanol and ethanol, which occur at the anode of the fuel cell. In this context, this work reports the synthesis of nanocatalysts of palladium supported on carbon and cerium oxide, physical characterization of the prepared materials and the evaluation of the catalytic activity for the oxidation of methanol and ethanol. The physical characterization was performed using X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy and X ray absorption spectroscopy techniques. Materials were also electrochemically characterized by cyclic voltammetry. The catalytic activity of the prepared materials was studied using electrochemical techniques such as chronoamperometry and cyclic voltammetry and also the spectroelectrochemical technique of in situ FTIR, which allows the identification of reaction products and intermediates. The X-ray diffraction showed that the addition of cerium oxide does not modify the crystalline structure of the Pd. The transmission electron microscopy images allow us to state that the method of synthesis used produced well dispersed palladium nanoparticles onto the support and narrow size distribution. The X-ray absorption spectra showed a higher fill on the 4d band of the palladium with the addition of cerium oxide. Experiments of CO monolayer oxidation showed that the presence of cerium oxide in the support did not cause change in the potential of CO oxidation peak. Regarding the catalytic activity for the electro-oxidation of methanol, palladium showed very low activity. For the electro-oxidation of ethanol, the materials synthesized at 25...

Published
2015

29. Organic-Inorganic Hybrid Coatings for Active and Passive Corrosion Protection

Author

Hammer, Peter, C. Uvida, Mayara, A. C. De Sousa, Thiago, Harb, Samarah Vargas, and Trentin, Andressa

Subjects
Technology & Engineering / Materials Science
Abstract

Organic-inorganic coatings based on poly(methyl methacrylate) (PMMA)-silica and PMMA-cerium oxide hybrids provide effective and active corrosion protection of metallic surfaces. For both hybrid materials, the covalent conjugation of inorganic silica or ceria nanodomains with the PMMA matrix, provided by molecular coupling agents, leads to homogenous and highly cross-linked nanocomposites, which act in the form of coatings as an efficient diffusion barrier. The addition of lithium salts (500–2000 ppm) into PMMA-silica hybrid and optimized ceria fraction in PMMA-cerium oxide coatings results in active corrosion inhibition by the self-healing effect. Results of electrochemical assays of aluminum- and steel-coated samples, performed in a 3.5% NaCl solution, show an excellent corrosion resistance (impedance modulus up to 100 GΩ cm2) and durability (up to 350 days) of the 10-μm-thick passive barrier layer. Time-of-flight secondary ion mass and X-ray photoelectron spectroscopies evidenced the self-healing ability of coatings induced by lithium/cerium ion leaching toward corrosion spots or artificial scratches, which are restored by a protective layer of precipitated phases. Results presented in this book chapter evidence the active role of lithium and cerium species in improving the hybrid structure and providing through self-healing a significantly extended service life of metallic components.

Published
2019

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