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Cai W, Cui J, Li K, Zhang Z, Xie H, Zhong Q, Qu H. Insight into the surface property modification-enhanced C 3N 4 performance of photocatalytic nitrogen fixation. Chem Commun (Camb) 2022; 58:6502-6505. [PMID: 35575204 DOI: 10.1039/d2cc01602h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The surface properties of the catalyst have an important influence on the process of heterogeneous reactions. We modified g-C3N4 with dicarboxylic acids with different hydrophobicity. Through experiments, we found that the NH3 yields of modified carbon nitrides can reach 267.89 μmol h-1 g-1 when only dissolved nitrogen is involved. But if both dissolved nitrogen and gaseous nitrogen are present in the reaction, the NH3 yield can reach as high as 751.83 μmol h-1 g-1, demonstrating that the participation of dissolved nitrogen alone is not enough and gaseous nitrogen indeed promotes the reaction of photocatalytic nitrogen fixation. Meanwhile, the nitrogen fixation performance of the catalyst is positively correlated with its hydrophobicity, indicating that a reasonable adjustment of the catalysts' hydrophobicity can give them a certain wettability to activate water, while also providing a hydrophobic surface for insoluble gas-phase nitrogen adsorption. This provides new ideas and directions for the design of future heterogeneous reaction catalysts.
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Affiliation(s)
- Wei Cai
- Department of Chemical Engineering and Technology, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P. R. China.
| | - Jian Cui
- Department of Chemical Engineering and Technology, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P. R. China.
| | - Kang Li
- Department of Chemical Engineering and Technology, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P. R. China.
| | - Zhicheng Zhang
- Department of Chemical Engineering and Technology, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P. R. China.
| | - Huifang Xie
- Department of Environmental Science and Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P. R. China
| | - Qin Zhong
- Department of Chemical Engineering and Technology, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P. R. China.
| | - Hongxia Qu
- Department of Chemical Engineering and Technology, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P. R. China.
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Park J, Jin K, Sahasrabudhe A, Chiang PH, Maalouf JH, Koehler F, Rosenfeld D, Rao S, Tanaka T, Khudiyev T, Schiffer ZJ, Fink Y, Yizhar O, Manthiram K, Anikeeva P. In situ electrochemical generation of nitric oxide for neuronal modulation. NATURE NANOTECHNOLOGY 2020; 15:690-697. [PMID: 32601446 PMCID: PMC7415650 DOI: 10.1038/s41565-020-0701-x] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 04/27/2020] [Indexed: 05/07/2023]
Abstract
Understanding the function of nitric oxide, a lipophilic messenger in physiological processes across nervous, cardiovascular and immune systems, is currently impeded by the dearth of tools to deliver this gaseous molecule in situ to specific cells. To address this need, we have developed iron sulfide nanoclusters that catalyse nitric oxide generation from benign sodium nitrite in the presence of modest electric fields. Locally generated nitric oxide activates the nitric oxide-sensitive cation channel, transient receptor potential vanilloid family member 1 (TRPV1), and the latency of TRPV1-mediated Ca2+ responses can be controlled by varying the applied voltage. Integrating these electrocatalytic nanoclusters with multimaterial fibres allows nitric oxide-mediated neuronal interrogation in vivo. The in situ generation of nitric oxide in the ventral tegmental area with the electrocatalytic fibres evoked neuronal excitation in the targeted brain region and its excitatory projections. This nitric oxide generation platform may advance mechanistic studies of the role of nitric oxide in the nervous system and other organs.
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Affiliation(s)
- Jimin Park
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, USA
- McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Kyoungsuk Jin
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Atharva Sahasrabudhe
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, USA
- McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Po-Han Chiang
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, USA
- McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Institute of Biomedical Engineering, National Chiao Tung University, Taiwan, Taiwan
| | - Joseph H Maalouf
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Florian Koehler
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, USA
- McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Dekel Rosenfeld
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, USA
- McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Siyuan Rao
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, USA
- McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Simons Center for Social Brain, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Tomo Tanaka
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, USA
- System Platform Research Laboratories, NEC Corporation, Tsukuba, Japan
| | - Tural Khudiyev
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, USA
- Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Zachary J Schiffer
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Yoel Fink
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, USA
- Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Ofer Yizhar
- Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel
| | - Karthish Manthiram
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
| | - Polina Anikeeva
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, USA.
- McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA.
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