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Meenu PC, Samanta PK, Datta SP, Singh SA, Dinda S, Chakraborty C, Roy S. Electro-Oxidation Reaction of Methanol over La 2-xSr xNi 1-y(Mn/Fe/Co) yO 4+δ Ruddlesden-Popper Oxides. Inorg Chem 2024; 63:526-536. [PMID: 38109558 DOI: 10.1021/acs.inorgchem.3c03429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
Solution combustion-synthesized Ruddlesden-Popper oxides La1.4Sr0.6Ni0.9(Mn/Fe/Co)0.1O4+δ were explored for the methanol electro-oxidation reaction. With optimal doping of Sr2+ in the A site and Co2+ in the B site, Ni3+ with t2g6 d x 2 - y 2 1 configuration in La1.4Sr0.6Ni0.9Co0.1O4+δ exhibited a tetragonal distortion with compression in axial bonds and elongation in equatorial bonds. This structural modification fostered an augmented overlap of d z 2 orbitals with axial O 2p orbitals, leading to a heightened density of states at the Fermi level. Consequently, this facilitated not only elevated electrical conductivity but also a noteworthy reduction in the charge transfer resistance. These effects collectively contributed to the exceptional methanol oxidation activity of La1.4Sr0.6Ni0.9Co0.1O4+δ, as evidenced by an impressive current density of 21.4 mA cm-2 and retention of 95% of initial current density even after 10 h of prolonged reaction. The presence of Ni3+ further played a pivotal role in the creation of NiOOH, a crucial intermediate species, facilitated by the presence of surface oxygen vacancies. These factors synergistically enabled efficient methanol oxidation. In summary, our present study not only yields substantial insights but also paves the way for a novel avenue to fine-tune the activity of Ruddlesden-Popper oxides for the successful electro-oxidation of methanol.
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Affiliation(s)
- Preetha Chandrasekharan Meenu
- Department of Chemistry, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Pralok K Samanta
- Department of Chemistry, School of Science, GITAM University, Hyderabad 502329, India
| | - Santanu Prasad Datta
- Department of Mechanical Engineering, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Satyapaul A Singh
- Department of Chemical Engineering, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Srikanta Dinda
- Department of Chemical Engineering, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Chanchal Chakraborty
- Department of Chemistry, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Sounak Roy
- Department of Chemistry, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad 500078, India
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Chandrasekharan Meenu P, Roy S. Electro-oxidation Reaction of Methanol over Reducible Ce 1-x-yNi xSr yO 2-δ: A Mechanistic Probe of Participation of Lattice Oxygen. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37471142 DOI: 10.1021/acsami.3c05262] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/22/2023]
Abstract
Methanol oxidation reaction crucially depends on the formation of -OOH species over the catalyst's surface. Ni-based catalysts are by far the choice of materials, where the redox couple of Ni2+/Ni3+ facilitates the formation of -OOH species by surface reconstructions. However, it is challenging to oxidize Ni2+ as it generates charge-transfer orbitals near the Fermi energy level. One possible solution is to substitute Ni2+ with a reducible oxide support, which will not only facilitate the Ni2+ → Ni3+ oxidation but also adsorb oxygenated species like -OOH at a lower potential owing to its oxophilicity. This work shows with the help of structural and surface studies that the reducible CeO2 support in Ni and Sr co-doped Ce1-x-yNixSryO2-δ solid solution can easily facilitate Ni2+ → Ni3+ oxidation as well as evolution of lattice oxygen during the methanol oxidation reaction. While the Ni3+ species helped in formation of -OOH surface intermediates, the evolved lattice oxygen eased the CO oxidation process in order to bring out the better CO-tolerant methanol oxidation activity over Ce1-x-yNixSryO2-δ. The study shows the unique importance of the electronic interactions between the active site and support and involvement of lattice oxygen in the methanol oxidation reaction.
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Affiliation(s)
- Preetha Chandrasekharan Meenu
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Sounak Roy
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad 500078, India
- Materials Center for Sustainable Energy & Environment, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad 500078, India
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Khan M, Abdullah MI, Samad A, Shao Z, Mushiana T, Akhtar A, Hameed A, Zhang N, Schwingenschlögl U, Ma M. Inhibitor and Activator: Dual Role of Subsurface Sulfide Enables Selective and Efficient Electro-Oxidation of Methanol to Formate on CuS@CuO Core-Shell Nanosheet Arrays. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2205499. [PMID: 37009999 DOI: 10.1002/smll.202205499] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 02/21/2023] [Indexed: 06/19/2023]
Abstract
Selective electro-oxidation of aliphatic alcohols into value-added carboxylates at lower potentials than that of the oxygen evolution reaction (OER) is an environmentally and economically desirable anode reaction for clean energy storage and conversion technologies. However, it is challenging to achieve both high selectivity and high activity of the catalysts for the electro-oxidation of alcohols, such as the methanol oxidation reaction (MOR). Herein, a monolithic CuS@CuO/copper-foam electrode for the MOR with superior catalytic activity and almost 100% selectivity for formate is reported. In the core-shell CuS@CuO nanosheet arrays, the surface CuO directly catalyzes MOR, while the subsurface sulfide not only serves as an inhibitor to attenuate the oxidative power of the surface CuO to achieve selective oxidation of methanol to formate and prevent over-oxidation of formate to CO2 but also serves as an activator to form more surface O defects as active sites and enhances the methanol adsorption and charge transfer to achieve superior catalytic activity. CuS@CuO/copper-foam electrodes can be prepared on a large scale by electro-oxidation of copper-foam at ambient conditions and can be readily utilized in clean energy technologies.
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Affiliation(s)
- Mustafa Khan
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Muhammad Imran Abdullah
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
- Department of Chemistry, Government College University, Lahore, 54000, Pakistan
| | - Abdus Samad
- Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Zhiang Shao
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Talifhani Mushiana
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Asma Akhtar
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Asima Hameed
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
- University of Central Punjab, Lahore, 54000, Pakistan
| | - Ning Zhang
- School of Biology, Food and Environment, Hefei University, Hefei, Anhui, 230022, China
| | - Udo Schwingenschlögl
- Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Mingming Ma
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
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Buledi JA, Solangi AR, Mallah A, Hassan SS, Ameen S, Karaman C, Karimi-Maleh H. A Reusable Nickel Oxide Reduced Graphene Oxide Modified Platinum Electrode for the Detection of Linezolid Drug. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c03334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Jamil A. Buledi
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro76080, Pakistan
| | - Amber R. Solangi
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro76080, Pakistan
| | - Arfana Mallah
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), 7491Trondheim, Norway
- M. A. Kazi Institute of Chemistry, University of Sindh, Jamshoro76080, Pakistan
| | - Syeda Sara Hassan
- U. S. Pakistan Centre for Advanced Studies in Water, Mehran University of Engineering and Technology, Jamshoro76080, Pakistan
| | - Sidra Ameen
- Department of Chemistry, Shaheed Benazir Bhutto University, Shaheed Benazirabad, Sindh67450, Pakistan
| | - Ceren Karaman
- Department of Electricity and Energy, Akdeniz University, Antalya07070, Turkey
- School of Engineering, Lebanese American University, Byblos1102 2801, Lebanon
| | - Hassan Karimi-Maleh
- School of Resources and Environment, University of Electronic Science and Technology of China, Xiyuan Ave, Chengdu611731, People’s Republic of China
- Department of Chemical Engineering, Quchan University of Technology, Quchan, 9477177870, Iran
- Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai, India602105
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Khatoon A, Khand NH, Mallah A, Solangi AR, Memon SQ, Memon AF, Karaman C, Karimi F, Karaman O. A Fast and Reliable Electrophoretic Method for Size-Based Characterization of Silver Nanoparticles. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c03317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Amna Khatoon
- National Centre of Excellence in Analytical Chemistry, University of Sindh, 76080Jamshoro, Pakistan
| | - Nadir H. Khand
- National Centre of Excellence in Analytical Chemistry, University of Sindh, 76080Jamshoro, Pakistan
| | - Arfana Mallah
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), 7491Trondheim, Norway
- M.A. Kazi Institute of Chemistry, University of Sindh, Jamshoro76080, Sindh, Pakistan
| | - Amber R. Solangi
- National Centre of Excellence in Analytical Chemistry, University of Sindh, 76080Jamshoro, Pakistan
| | - Saima Q. Memon
- M.A. Kazi Institute of Chemistry, University of Sindh, Jamshoro76080, Sindh, Pakistan
| | - Almas F. Memon
- Department of Chemistry, Government College University, Hyderabad, Sindh71000, Pakistan
| | - Ceren Karaman
- Department of Electricity and Energy, Akdeniz University, Antalya07070, Turkey
- School of Engineering, Lebanese American University, Byblos1102 2801, Lebanon
| | - Fatemeh Karimi
- Department of Chemical Engineering, Quchan University of Technology, Quchan9477177870, Iran
| | - Onur Karaman
- Department of Medical Imaging Techniques, Akdeniz University, Antalya07070, Turkey
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Foam Synthesis of Nickel/Nickel (II) Hydroxide Nanoflakes Using Double Templates of Surfactant Liquid Crystal and Hydrogen Bubbles: A High-Performance Catalyst for Methanol Electrooxidation in Alkaline Solution. NANOMATERIALS 2022; 12:nano12050879. [PMID: 35269368 PMCID: PMC8912855 DOI: 10.3390/nano12050879] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 02/28/2022] [Accepted: 03/03/2022] [Indexed: 12/04/2022]
Abstract
This work demonstrates the chemical synthesis of two-dimensional nanoflakes of mesoporous nickel/nickel (II) hydroxide (Ni/Ni(OH)2-NFs) using double templates of surfactant self-assembled thin-film and foam of hydrogen bubbles produced by sodium borohydride reducing agent. Physicochemical characterizations show the formation of amorphous mesoporous 2D nanoflakes with a Ni/Ni(OH)2 structure and a high specific surface area (165 m2/g). Electrochemical studies show that the electrocatalytic activity of Ni/Ni(OH)2 nanoflakes towards methanol oxidation in alkaline solution is significantly enhanced in comparison with that of parent bare-Ni(OH)2 deposited from surfactant-free solution. Cyclic voltammetry shows that the methanol oxidation mass activity of Ni/Ni(OH)2-NFs reaches 545 A/cm2 gcat at 0.6 V vs. Ag/AgCl, which is more than five times higher than that of bare-Ni(OH)2. Moreover, Ni/Ni(OH)2-NFs reveal less charge transfer resistance (10.4 Ω), stable oxidation current density (625 A/cm2 gcat at 0.7 V vs. Ag/AgCl), and resistance to the adsorption of reaction intermediates and products during three hours of constant-potential methanol oxidation electrolysis in alkaline solution. The high-performance electrocatalytic activity of Ni/Ni(OH)2 nanoflakes is mainly derived from efficient charge transfer due to the high specific surface area of the 2D mesoporous architecture of the nanoflakes, as well as the mass transport of methanol to Ni2+/Ni3+ active sites throughout the catalyst layer.
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