Search Results - "CULLEN, David A"

Thermally Driven Structure and Performance Evolution of Atomically Dispersed FeN4 Sites for Oxygen Reduction by Li, Jiazhan, Zhang, Hanguang, Samarakoon, Widitha, Shan, Weitao, Cullen, David A., Karakalos, Stavros, Chen, Mengjie, Gu, Daming, More, Karren L., Wang, Guofeng, Feng, Zhenxing, Wang, Zhenbo, Wu, Gang

“…FeN4 moieties embedded in partially graphitized carbon are the most efficient platinum group metal free active sites for the oxygen reduction reaction in…”
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Electrochemical ammonia synthesis via nitrate reduction on Fe single atom catalyst by Wu, Zhen-Yu, Karamad, Mohammadreza, Yong, Xue, Huang, Qizheng, Cullen, David A., Zhu, Peng, Xia, Chuan, Xiao, Qunfeng, Shakouri, Mohsen, Chen, Feng-Yang, Kim, Jung Yoon (Timothy), Xia, Yang, Heck, Kimberly, Hu, Yongfeng, Wong, Michael S., Li, Qilin, Gates, Ian, Siahrostami, Samira, Wang, Haotian

“…Electrochemically converting nitrate, a widespread water pollutant, back to valuable ammonia is a green and delocalized route for ammonia synthesis, and can be…”
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Nitrogen‐Coordinated Single Cobalt Atom Catalysts for Oxygen Reduction in Proton Exchange Membrane Fuel Cells by Wang, Xiao Xia, Cullen, David A., Pan, Yung‐Tin, Hwang, Sooyeon, Wang, Maoyu, Feng, Zhenxing, Wang, Jingyun, Engelhard, Mark H., Zhang, Hanguang, He, Yanghua, Shao, Yuyan, Su, Dong, More, Karren L., Spendelow, Jacob S., Wu, Gang

“…Due to the Fenton reaction, the presence of Fe and peroxide in electrodes generates free radicals causing serious degradation of the organic ionomer and the…”
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Single Cobalt Sites Dispersed in Hierarchically Porous Nanofiber Networks for Durable and High‐Power PGM‐Free Cathodes in Fuel Cells by He, Yanghua, Guo, Hui, Hwang, Sooyeon, Yang, Xiaoxuan, He, Zizhou, Braaten, Jonathan, Karakalos, Stavros, Shan, Weitao, Wang, Maoyu, Zhou, Hua, Feng, Zhenxing, More, Karren L., Wang, Guofeng, Su, Dong, Cullen, David A., Fei, Ling, Litster, Shawn, Wu, Gang

“…Increasing catalytic activity and durability of atomically dispersed metal–nitrogen–carbon (M–N–C) catalysts for the oxygen reduction reaction (ORR) cathode in…”
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Selective and Stable Non-Noble-Metal Intermetallic Compound Catalyst for the Direct Dehydrogenation of Propane to Propylene by He, Yang, Song, Yuanjun, Cullen, David A, Laursen, Siris

“…A non-noble intermetallic compound catalyst consisting of Ni3Ga nanoparticles supported on Al2O3 that exhibits high selectivity (∼94%), comparable activity…”
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Fabrication of Au25(SG)18–ZIF‐8 Nanocomposites: A Facile Strategy to Position Au25(SG)18 Nanoclusters Inside and Outside ZIF‐8 by Luo, Yucheng, Fan, Shiyan, Yu, Wenqian, Wu, Zili, Cullen, David A., Liang, Chaolun, Shi, Jianying, Su, Chengyong

“…Multifunctional composite materials are currently highly desired for sustainable energy applications. A general strategy to integrate atomically precise…”
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Regulating Catalytic Properties and Thermal Stability of Pt and PtCo Intermetallic Fuel-Cell Catalysts via Strong Coupling Effects between Single-Metal Site-Rich Carbon and Pt by Zeng, Yachao, Liang, Jiashun, Li, Chenzhao, Qiao, Zhi, Li, Boyang, Hwang, Sooyeon, Kariuki, Nancy N., Chang, Chun-Wai, Wang, Maoyu, Lyons, Mason, Lee, Sungsik, Feng, Zhenxing, Wang, Guofeng, Xie, Jian, Cullen, David A., Myers, Deborah J., Wu, Gang

“…Developing low platinum-group-metal (PGM) catalysts for the oxygen reduction reaction (ORR) in proton-exchange membrane fuel cells (PEMFCs) for heavy-duty…”
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Harvesting Sub-Bandgap IR Photons by Photothermionic Hot Electron Transfer in a Plasmonic p–n Junction by Yang, Wenxing, Liu, Yawei, Cullen, David A, McBride, James R, Lian, Tianquan

“…Plasmonic semiconductors are an emerging class of low-cost plasmonic materials, and the presence of a bandgap and band-bending in these materials offer new…”
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Ionomer-free and recyclable porous-transport electrode for high-performing proton-exchange-membrane water electrolysis by Lee, Jason K., Anderson, Grace, Tricker, Andrew W., Babbe, Finn, Madan, Arya, Cullen, David A., Arregui-Mena, José’ D., Danilovic, Nemanja, Mukundan, Rangachary, Weber, Adam Z., Peng, Xiong

“…Clean hydrogen production requires large-scale deployment of water-electrolysis technologies, particularly proton-exchange-membrane water electrolyzers…”
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Ternary Electrocatalysts for Oxidizing Ethanol to Carbon Dioxide: Making Ir Capable of Splitting C–C Bond by Li, Meng, Cullen, David A, Sasaki, Kotaro, Marinkovic, Nebojsa S, More, Karren, Adzic, Radoslav R

“…Splitting the C–C bond is the main obstacle to electrooxidation of ethanol (EOR) to CO2. We recently demonstrated that the ternary PtRhSnO2 electrocatalyst can…”
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Platinum–Ruthenium Nanotubes and Platinum–Ruthenium Coated Copper Nanowires As Efficient Catalysts for Electro-Oxidation of Methanol by Zheng, Jie, Cullen, David A, Forest, Robert V, Wittkopf, Jarrid A, Zhuang, Zhongbin, Sheng, Wenchao, Chen, Jingguang G, Yan, Yushan

“…The sluggish kinetics of methanol oxidation reaction (MOR) is a major barrier to the commercialization of direct methanol fuel cells (DMFCs). In this work, we…”
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20%-efficient polycrystalline Cd(Se,Te) thin-film solar cells with compositional gradient near the front junction by Li, Deng-Bing, Bista, Sandip S., Awni, Rasha A., Neupane, Sabin, Abudulimu, Abasi, Wang, Xiaoming, Subedi, Kamala K., Jamarkattel, Manoj K., Phillips, Adam B., Heben, Michael J., Poplawsky, Jonathan D., Cullen, David A., Ellingson, Randy J., Yan, Yanfa

“…Bandgap gradient is a proven approach for improving the open-circuit voltages (V OC s) in Cu(In,Ga)Se 2 and Cu(Zn,Sn)Se 2 thin-film solar cells, but has not…”
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Ultrasensitive gas detection of large-area boron-doped graphene by Lv, Ruitao, Chen, Gugang, Li, Qing, McCreary, Amber, Botello-Méndez, Andrés, Morozov, S. V., Liang, Liangbo, Declerck, Xavier, Perea-López, Nestor, Cullen, David A., Feng, Simin, Elías, Ana Laura, Cruz-Silva, Rodolfo, Fujisawa, Kazunori, Endo, Morinobu, Kang, Feiyu, Charlier, Jean-Christophe, Meunier, Vincent, Pan, Minghu, Harutyunyan, Avetik R., Novoselov, Konstantin S., Terrones, Mauricio

“…Heteroatom doping is an efficient way to modify the chemical and electronic properties of graphene. In particular, boron doping is expected to induce ap-type…”
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Atomistic-Scale Simulations of Defect Formation in Graphene under Noble Gas Ion Irradiation by Yoon, Kichul, Rahnamoun, Ali, Swett, Jacob L, Iberi, Vighter, Cullen, David A, Vlassiouk, Ivan V, Belianinov, Alex, Jesse, Stephen, Sang, Xiahan, Ovchinnikova, Olga S, Rondinone, Adam J, Unocic, Raymond R, van Duin, Adri C.T

“…Despite the frequent use of noble gas ion irradiation of graphene, the atomistic-scale details, including the effects of dose, energy, and ion bombardment…”
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Ozonated Graphene Oxide Film as a Proton-Exchange Membrane by Gao, Wei, Wu, Gang, Janicke, Michael T., Cullen, David A., Mukundan, Rangachary, Baldwin, Jon K., Brosha, Eric L., Galande, Charudatta, Ajayan, Pulickel M., More, Karren L., Dattelbaum, Andrew M., Zelenay, Piotr

“…Graphene oxide (GO) contains several chemical functional groups that are attached to the graphite basal plane and can be manipulated to tailor GO for specific…”
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Distinct photoluminescence and Raman spectroscopy signatures for identifying highly crystalline WS2 monolayers produced by different growth methods by McCreary, Amber, Berkdemir, Ayse, Wang, Junjie, Nguyen, Minh An, Elías, Ana Laura, Perea-López, Néstor, Fujisawa, Kazunori, Kabius, Bernd, Carozo, Victor, Cullen, David A., Mallouk, Thomas E., Zhu, J., Terrones, Mauricio

“…Transition metal dichalcogenides such as WS2 show exciting promise in electronic and optoelectronic applications. Significant variations in the transport,…”
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Highly Efficient Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol over Gold Supported on Zinc Oxide Materials by Chen, Hangning, Cullen, David A, Larese, J. Z

“…Au/ZnO catalysts have been used for liquid-phase selective hydrogenation of cinnamaldehyde to cinnamyl alcohol and compared with Au/Fe2O3 catalysts. To…”
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Pd-Ru pair on Pt surface for promoting hydrogen oxidation and evolution in alkaline media by Cao, Longsheng, Soto, Fernando A., Li, Dan, Deng, Tao, Hu, Enyuan, Lu, Xiner, Cullen, David A., Eidson, Nico, Yang, Xiao-Qing, He, Kai, Balbuena, Perla B., Wang, Chunsheng

“…Hydrogen oxidation reaction in alkaline media is critical for alkaline fuel cells and electrochemical ammonia compressors. The slow hydrogen oxidation reaction…”
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A physical catalyst for the electrolysis of nitrogen to ammonia by Song, Yang, Johnson, Daniel, Peng, Rui, Hensley, Dale K, Bonnesen, Peter V, Liang, Liangbo, Huang, Jingsong, Yang, Fengchang, Zhang, Fei, Qiao, Rui, Baddorf, Arthur P, Tschaplinski, Timothy J, Engle, Nancy L, Hatzell, Marta C, Wu, Zili, Cullen, David A, Meyer, 3rd, Harry M, Sumpter, Bobby G, Rondinone, Adam J

“…Ammonia synthesis consumes 3 to 5% of the world's natural gas, making it a significant contributor to greenhouse gas emissions. Strategies for synthesizing…”
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Faradaurate-940: Synthesis, Mass Spectrometry, Electron Microscopy, High-Energy X‑ray Diffraction, and X‑ray Scattering Study of Au∼940±20(SR)∼160±4 Nanocrystals by Kumara, Chanaka, Zuo, Xiaobing, Cullen, David A, Dass, Amala

“…Obtaining monodisperse nanocrystals and determining their composition to the atomic level and their atomic structure is highly desirable but is generally…”
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