1
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Gao H, Yu H, Yang S, Chai F, Wu H, Tian M. Ultrasensitive detection of H 2O 2 via electrochemical sensor by graphene synergized with MOF-on-MOF nanozymes. Mikrochim Acta 2024; 191:482. [PMID: 39046581 DOI: 10.1007/s00604-024-06541-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Accepted: 07/04/2024] [Indexed: 07/25/2024]
Abstract
An electrochemical sensor was developed for the detection of hydrogen peroxide (H2O2), utilizing the synergistic effects of graphene (Gr) and MOF-on-MOF nanozymes (FeCu-NZs). Initially, Fe-MOF with peroxide-like activity is synthesized using a solvothermal method. Subsequently, the organic ligand on its surface binds Cu2+, enhancing the enzyme-like activity further. The resulting FeCu-NZs exhibit a distinctive electrochemical signal in response to H2O2. Moreover, integrating FeCu-NZs with Gr significantly amplifies the electrochemical signal and effectively reduces the sensor's detection limit. The developed sensor exhibited linear ranges of 0.1-3800 μM, with a limit of detection (LOD) of 0.06 μM. Additionally, FeCu-NZs catalyze H2O2 to generate abundant •OH radicals, and colorimetric detection of H2O2 is facilitated using the color rendering principle of 3,3',5,5'-tetramethylbenzidine (TMB). Notably, this detection method was applied to determine H2O2 concentrations in real samples, achieving a recovery exceeding 95.7%. In summary, this research provides a practical platform for the construction of traditional nanozymes and the integration of electrochemical systems, which have broad applications in food analysis, environmental monitoring, and medical diagnosis.
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Affiliation(s)
- Haifeng Gao
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, Heilongjiang Province, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, 150025, P. R. China
| | - Haiting Yu
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, Heilongjiang Province, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, 150025, P. R. China
| | - Shuang Yang
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, Heilongjiang Province, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, 150025, P. R. China
| | - Fang Chai
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, Heilongjiang Province, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, 150025, P. R. China
| | - Hongbo Wu
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, Heilongjiang Province, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, 150025, P. R. China.
| | - Miaomiao Tian
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, Heilongjiang Province, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, 150025, P. R. China.
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2
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Anastasiou DE. Teaching Green Chemistry and Engineering through the Epoxidation of Poly-β-myrcene. Chempluschem 2024:e202400167. [PMID: 38837684 DOI: 10.1002/cplu.202400167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 04/10/2024] [Indexed: 06/07/2024]
Abstract
This study explores the application of the epoxidation process of poly-β-myrcene, a constituent of the natural resin from Chios Mastic trees (Pistacia Lentiscus L.), as an educational instrument for teaching Green Chemistry and Engineering to students at various academic levels. The study provides a comprehensive presentation of foundational knowledge essential for interpreting the subsequent experimental data. Consequently, the production process that leads to the production of Mastic Epoxide (MASTEP) stands as an invaluable pedagogical resource, enabling educators to impart crucial principles of Green Chemistry and Engineering to both pre-graduate and post-graduate students. By employing MASTEP as a case study, this educational approach actively involves students in a dynamic learning environment. Through this methodology, learners develop a profound comprehension of sustainability, innovation, and good practices. The integration of the MASTEP concept into the curriculum would foster a deeper understanding of responsible methodologies among aspiring chemical engineers and scientists, equipping them to make substantial contributions towards a more sustainable global landscape. This educational model aims to contribute to preparing future generations for a pivotal role in fostering a sustainable world through their professional endeavors.
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Affiliation(s)
- Dimitrios E Anastasiou
- Department of Mechanical and Aeronautical Engineering, University of Patras, Patras, 26504, Greece
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3
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Hashimoto K, Nakazono T, Yamada Y. High Power Density of a Hydrogen Peroxide Fuel Cell Using Cobalt Chlorin Complex Supported on Carbon Nanotubes as a Noncorrosive Anode. Inorg Chem 2024; 63:1347-1355. [PMID: 38178696 DOI: 10.1021/acs.inorgchem.3c03857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Hydrogen peroxide fuel cells (HPFCs) have attracted much attention due to their simple one-compartment structures and high availability under harsh conditions such as an anaerobic environment; however, catalysis improvement is strongly demanded for both anodes and cathodes in terms of activity and durability. Herein, we report the high catalytic activity of CoII chlorin [CoII(Ch)] for hydrogen peroxide (H2O2) oxidation with a low overpotential (0.21 V) compared to that of the CoII phthalocyanine and CoII porphyrin complexes, which have previously been reported as active anode catalysts. Linear sweep voltammograms and differential pulse voltammograms of the CoII complexes (CoIIL) and the corresponding ligands clearly showed that the CoIIIL species are the active species for H2O2 oxidation. Then, one-compartment HPFCs were constructed with CoII(Ch) supported on multiwalled carbon nanotubes (CNTs) as the anode together with FeII3[CoIII(CN)6]2 supported on CNTs as the cathode. The maximum power density of the HPFCs reached 151 μW cm-2 with an open circuit potential of 0.33 V when the coverage of CNT surfaces with CoII(Ch) exceeded ∼60% at the anode.
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Affiliation(s)
- Kazuki Hashimoto
- Department of Chemistry and Bioengineering, Graduate School of Engineering, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
| | - Takashi Nakazono
- Research Center for Artificial Photosynthesis (ReCAP), Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
| | - Yusuke Yamada
- Department of Chemistry and Bioengineering, Graduate School of Engineering, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
- Research Center for Artificial Photosynthesis (ReCAP), Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
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4
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Arismendi-Arrieta DJ, Sen A, Eriksson A, Broqvist P, Kullgren J, Hermansson K. H2O2(s) and H2O2·2H2O(s) crystals compared with ices: DFT functional assessment and D3 analysis. J Chem Phys 2023; 159:194701. [PMID: 37966002 DOI: 10.1063/5.0145203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 07/27/2023] [Indexed: 11/16/2023] Open
Abstract
The H2O and H2O2 molecules resemble each other in a multitude of ways as has been noted in the literature. Here, we present density functional theory (DFT) calculations for the H2O2(s) and H2O2·2H2O(s) crystals and make selected comparisons with ice polymorphs. The performance of a number of dispersion-corrected density functionals-both self-consistent and a posteriori ones-are assessed, and we give special attention to the D3 correction and its effects. The D3 correction to the lattice energies is large: for H2O2(s) the D3 correction constitutes about 25% of the lattice energy using PBE, much more for RPBE, much less for SCAN, and it primarily arises from non-H-bonded interactions out to about 5 Å.The large D3 corrections to the lattice energies are likely a consequence of several effects: correction for missing dispersion interaction, the ability of D3 to capture and correct various other kinds of limitations built into the underlying DFT functionals, and finally some degree of cell-contraction-induced polarization enhancement. We find that the overall best-performing functionals of the twelve examined are optPBEvdW and RPBE-D3. Comparisons with DFT assessments for ices in the literature show that where the same methods have been used, the assessments largely agree.
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Affiliation(s)
| | - Anik Sen
- Department of Chemistry-Ångström, Uppsala University, P.O. Box 530, S-75121 Uppsala, Sweden
| | - Anders Eriksson
- Department of Chemistry-Ångström, Uppsala University, P.O. Box 530, S-75121 Uppsala, Sweden
| | - Peter Broqvist
- Department of Chemistry-Ångström, Uppsala University, P.O. Box 530, S-75121 Uppsala, Sweden
| | - Jolla Kullgren
- Department of Chemistry-Ångström, Uppsala University, P.O. Box 530, S-75121 Uppsala, Sweden
| | - Kersti Hermansson
- Department of Chemistry-Ångström, Uppsala University, P.O. Box 530, S-75121 Uppsala, Sweden
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5
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Jiang M, Liu Y, Xue H, Wang Y, Wang C, Yang F, Li X. Expression and biochemical characterization of a Bacillus subtilis catalase in Pichia pastoris X-33. Protein Expr Purif 2023; 208-209:106277. [PMID: 37100104 DOI: 10.1016/j.pep.2023.106277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 04/20/2023] [Accepted: 04/21/2023] [Indexed: 04/28/2023]
Abstract
Catalase, which catalyzes the decomposition of H2O2 to H2O and O2, is widely used to reduce H2O2 in industrial applications, such as in food processing, textile dyeing and wastewater treatment. In this study, the catalase (KatA) from Bacillus subtilis was cloned and expressed in the yeast Pichia pastoris X-33. The effect of the promoter in the expression plasmid on the activity level of the secreted KatA protein was also studied. First, the gene encoding KatA was cloned and inserted into a plasmid containing an inducible alcohol oxidase 1 promoter (pAOX1) or a constitutive glyceraldehyde-3-phosphate dehydrogenase promoter (pGAP). The recombinant plasmids were validated by colony PCR and sequencing and then linearized and transformed into the yeast P. pastoris X-33 for expression. With the promoter pAOX1, the maximum yield of KatA in the culture medium reached 338.8 ± 9.6 U/mL in 2 days of shake flask cultivation, which was approximately 2.1-fold greater than the maximum yield obtained with the promoter pGAP. The expressed KatA was then purified from the culture medium by anion exchange chromatography, and its specific activity was determined to be 14826.58 U/mg. Finally, the purified KatA exhibited optimum activity at 25 °C and pH 11.0. Its Km for hydrogen peroxide was 10.9 ± 0.5 mM, and its kcat/Km was 5788.1 ± 25.6 s-1 mM-1. Through the work presented in this article, we have therefore demonstrated efficient expression and purification of KatA in P. pastoris, which might be advantageous for scaling up the production of KatA for use in a variety of biotechnological applications.
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Affiliation(s)
- Mengtong Jiang
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, China
| | - Yuxin Liu
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, China
| | - Hongjian Xue
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, China
| | - Yiqi Wang
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, China
| | - Conggang Wang
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, China.
| | - Fan Yang
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, China.
| | - Xianzhen Li
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, China
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6
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Wei W, Zou L, Li J, Hou F, Sheng Z, Li Y, Guo Z, Wei A. Dual molecules engineered carbon nitride for achieving outstanding photocatalytic H 2O 2 production. J Colloid Interface Sci 2023; 636:537-548. [PMID: 36652829 DOI: 10.1016/j.jcis.2023.01.046] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 01/07/2023] [Accepted: 01/09/2023] [Indexed: 01/12/2023]
Abstract
Molecular engineering of carbon nitride (CN) was considered as a suitable and compelling strategy to overcome the intrinsic imperfections and enhance photocatalytic H2O2 production. However, the photocatalytic H2O2 production of conventional single molecular engineering is still unsatisfactory, and the comprehension of photogenerated carrier migration and separation is still indistinct. Herein, dual molecules were engineered on CN molecular skeleton for achieving an outstanding photocatalytic rate of H2O2 production. The photocatalytic H2O2 production rate of the dual molecules engineered CN was up to 3320 μmol g-1 h-1, which was approximately 25 times than that of the pristine CN. After the dual-molecular engineering, pyrimidine and cyano group were co-grafted. Synchronously, K ion and Na ion were co-embedded near the interlamination of CN layers. The synergistic effect of the dual molecules in CN not only restrained photogenerated carrier recombination and broadened visible light response by modulating the intrinsic energy band structure, but also enhanced the capture of the photogenerated electrons and accelerated the migration of proton. Hence, the photocatalytic 2e- oxygen reduction reaction, the rate-determining step, was significantly strengthened. Additionally, caused by the positive valence band potential, the H2O oxidation reaction became an indispensable role in photocatalytic H2O2 production. This work provided a viable route to modulate the molecular skeleton of organic semiconductors and presented a promising strategy to obtain high-efficient photocatalytic H2O2 production.
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Affiliation(s)
- Wei Wei
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu Key Laboratory for Biosensors, Nanjing University of Posts & Telecommunications, Nanjing 210023, China
| | - Leilei Zou
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu Key Laboratory for Biosensors, Nanjing University of Posts & Telecommunications, Nanjing 210023, China
| | - Jin Li
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu Key Laboratory for Biosensors, Nanjing University of Posts & Telecommunications, Nanjing 210023, China; Nantong Institute of Nanjing University of Posts and Telecommunications Co. Ltd., Nantong 226001, China
| | - Fengming Hou
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu Key Laboratory for Biosensors, Nanjing University of Posts & Telecommunications, Nanjing 210023, China; Kunshan Innovation Institute of Xidian University, Suzhou 215316, China
| | - Zekai Sheng
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu Key Laboratory for Biosensors, Nanjing University of Posts & Telecommunications, Nanjing 210023, China
| | - Yihang Li
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu Key Laboratory for Biosensors, Nanjing University of Posts & Telecommunications, Nanjing 210023, China
| | - Zhipeng Guo
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu Key Laboratory for Biosensors, Nanjing University of Posts & Telecommunications, Nanjing 210023, China
| | - Ang Wei
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu Key Laboratory for Biosensors, Nanjing University of Posts & Telecommunications, Nanjing 210023, China.
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7
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Shi J, Wang H, Nie J, Yang T, Ju C, Pu K, Shi J, Zhao T, Li H, Xue J. Alkali-assisted engineering of ultrathin graphite phase carbon nitride nanosheets with carbon vacancy and cyano group for significantly promoting photocatalytic hydrogen peroxide generation under visible light: fast electron transfer channel. J Colloid Interface Sci 2023; 643:47-61. [PMID: 37044013 DOI: 10.1016/j.jcis.2023.03.209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/13/2023] [Accepted: 03/31/2023] [Indexed: 04/08/2023]
Abstract
Exfoliating bulk graphite phase carbon nitride (g-C3N4) into 2D nanosheets is considered to be an effective method to enhance its photocatalytic activity. However, optical absorption capacity of the exfoliated g-C3N4 nanosheets are lower than that of the original bulk g-C3N4 due to the quantum size effect. Here, the ultrathin graphite phase carbon nitride nanosheets containing both carbon vacancy and cyano group (UCNS580) were prepared by two-step calcination in air with the assistance of KOH. The formation and position of carbon vacancy and cyano group were first investigated and determined. The simultaneous introduction of carbon vacancy and cyano group not only improved light absorption range and intensity of g-C3N4 nanosheets, but also more importantly constructed a fast transfer channel for photogenerated electrons, further enhancing the separation efficiency and migration ability of photogenerated carriers. The cyano group as the accumulation center of photogenerated electrons and the oxygen adsorption center increased the proportion of one-step two-electrons reaction path to efficiently generate H2O2. As a result, UCNS580 exhibited highly boosted H2O2 generation activity, its H2O2 production yield for 6 h reached 939 µmol/L and the formation rate was up to 4167 µM h-1 g-1, which was in priority in the reported literature under the same conditions.
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Affiliation(s)
- Jianhui Shi
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, PR China.
| | - Hui Wang
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, PR China
| | - Jianhui Nie
- Department of Mechanical and Electrical Engineering, Jinzhong Vocational and Technical College, Jinzhong, PR China
| | - Tiantian Yang
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, PR China
| | - Chenke Ju
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, PR China
| | - Kaikai Pu
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, PR China
| | - Jiating Shi
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, PR China
| | - Ting Zhao
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, PR China
| | - Houfen Li
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, PR China
| | - Jinbo Xue
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, PR China
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8
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Chang C, Gupta P. Exploring the Oxidative Effects of the Microbial Electro-Fenton Process on the Depolymerization of Lignin Extracted from Rice Straw in a Bio-Electrochemical System Coupled with Wastewater Treatment. Biomacromolecules 2023; 24:1220-1232. [PMID: 36800267 DOI: 10.1021/acs.biomac.2c01281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Lignin is a potential renewable feedstock to produce value-added compounds, but the overwhelming bulk of it is either burned for energy or discarded as waste. This paper addressed two critical issues: waste-to-value generation and management by demonstrating the in situ depolymerization of lignin extracted from waste rice straw utilizing the microbial electro-Fenton process in a microbial peroxide-producing cell (MPPC), a type of bio-electrochemical cell, for value addition while synchronously treating wastewater. The MPPC electrochemical voltage yields of 0.171 ± 0.05-0.497 ± 0.2 V produced 9 ± 0.43-34 ± 0.11 mM of H2O2, which was utilized to depolymerize lignin at various concentrations. Interestingly, a direct correlation was observed between lignin depolymerization and H2O2 concentration, while Fourier-transform infrared spectroscopy data revealed a constant disruption of the lignin structure accurately in the wavenumber region of 1000-1750 cm-1 irrespective of the H2O2 concentration. Carboxylic acid derivatives, benzopyran, hexanoic acid, and other valuable compounds were detected in the LC QTOF MS data from the depolymerized lignin mixture. Remarkably, SEM analysis demonstrated morphological changes in depolymerized lignin induced by the oxidative effects of hydroxyl radicals. Biochemical oxygen demand and chemical oxygen demand removal was 60 ± 3-85 ± 1% in anodic wastewater treatment. This research provides a sustainable and efficient technique for lignin valorization and wastewater treatment.
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Affiliation(s)
- Changsomba Chang
- Department of Biotechnology, National Institute of Technology Raipur, Raipur 492010, Chhattisgarh, India
| | - Pratima Gupta
- Department of Biotechnology, National Institute of Technology Raipur, Raipur 492010, Chhattisgarh, India
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9
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Gao Y, Lei H, Bao Z, Liu X, Qin L, Yin Z, Li H, Huang S, Zhang W, Cao R. Electrocatalytic oxygen reduction with cobalt corroles bearing cationic substituents. Phys Chem Chem Phys 2023; 25:4604-4610. [PMID: 36723094 DOI: 10.1039/d2cp05786g] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Recent decades have seen increasing interest in developing highly active and selective electrocatalysts for the oxygen reduction reaction (ORR). The active site environment of cytochrome c oxidases (CcOs), including electrostatic and hydrogen-bonding interactions, plays an important role in promoting the selective conversion of dioxygen to water. Herein, we report the synthesis of three CoIII corroles, namely 1 (with a 10-phenyl ortho-trimethylammonium cationic group), 2 (with a 10-phenyl ortho-dimethylamine group) and 3 (with a 10-phenyl para-trimethylammonium cationic group) as well as their electrocatalytic ORR activities in both acidic and neutral solutions. We discovered that 1 is much more active and selective than 2 and 3 for the electrocatalytic four-electron ORR. Importantly, 1 showed ORR activities with half-wave potentials at E1/2 = 0.75 V versus RHE in 0.5 M H2SO4 solutions and at E1/2 = 0.70 V versus RHE in neutral 0.1 M phosphate buffer solutions. This work is significant for outlining a strategy to increase both the activity and selectivity of metal corroles for the electrocatalytic ORR by introducing cationic units.
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Affiliation(s)
- Yimei Gao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China.
| | - Haitao Lei
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China.
| | - Zijia Bao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China.
| | - Xinrong Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China.
| | - Lingshuang Qin
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China.
| | - Zhiyuan Yin
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China.
| | - Huiyuan Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China.
| | - Shu Huang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China.
| | - Wei Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China.
| | - Rui Cao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China.
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10
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Wang J, Song J, Sheng L, Deng J, Luo G. Microdispersion of Gas or Water in an Anthraquinone Working Solution for the H 2O 2 Synthesis Process Intensification. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c04503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Junjie Wang
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing100084, China
| | - Jing Song
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing100084, China
| | - Lin Sheng
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing100084, China
| | - Jian Deng
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing100084, China
| | - Guangsheng Luo
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing100084, China
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11
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Wang J, Chen Y, Du W, Chen N, Fu K, He Q, Shao L. Green oxidative rearrangement of indoles using halide catalyst and hydrogen peroxide. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133101] [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]
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12
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Jiang D, Shi Y, Zhou L, Ma J, Pan H, Lin Q. Promotional Effect of Nitrogen-doped and Pore Structure for the direct synthesis of Hydrogen Peroxide from Hydrogen and Oxygen by Pd/C Catalyst at Ambient Pressure. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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13
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Rajendran S, Manoj D, Suresh R, Vasseghian Y, Ghfar AA, Sharma G, Soto-Moscoso M. Electrochemical detection of hydrogen peroxide using micro and nanoporous CeO 2 catalysts. ENVIRONMENTAL RESEARCH 2022; 214:113961. [PMID: 35932831 DOI: 10.1016/j.envres.2022.113961] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/27/2022] [Accepted: 07/20/2022] [Indexed: 06/15/2023]
Abstract
In this research work, focus has been made on a glassy carbon electrode (GCE) modified commercial micro and synthesized nano-CeO2 for the detection of hydrogen peroxide (H2O2). Firstly, CeO2 nanoleaves were prepared by solvothermal route. Both commercially available micro CeO2 and synthesized nano-CeO2 structures were analyzed by different characterization techniques. The Raman spectra of synthesized nano CeO2 has more oxygen vacancies than micro CeO2. SEM images revealed that the synthesized CeO2 acquired leaf-like morphology. The catalyst nano CeO2 offered mesoporosity from nitrogen adsorption-desorption isotherms with massive sites of activation for increasing efficiency. Experiments on determining H2O2 using micro CeO2 or nano-CeO2/GCE was conducted using cyclic voltammetry (CV) and amperometry. Enhanced H2O2 reduction peak current with lower potential was observed in nano-CeO2/GCE. The influence of scan rate and H2O2 concentration on the performance of nano-CeO2/GCE were also studied. The obtained results have indicated that nano-CeO2/GCE showed improved electrochemical sensing behavior towards the reduction of H2O2 than micro-CeO2/GCE and bare GCE. A linear relationship was obtained over 0.001 μM-0.125 μM concentration of H2O2, with good sensitivity 141.96 μA μM-1 and low detection limit of 0.4 nM. Hence, the present nano-CeO2 system will have a great potential with solvothermal synthesis approach in the development of electrochemical sensors.
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Affiliation(s)
- Saravanan Rajendran
- Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Tarapacá, Avda. General Velásquez, 1775, Arica, Chile.
| | - Devaraj Manoj
- Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Tarapacá, Avda. General Velásquez, 1775, Arica, Chile
| | - R Suresh
- Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Tarapacá, Avda. General Velásquez, 1775, Arica, Chile
| | - Yasser Vasseghian
- Department of Chemistry, Soongsil University, Seoul, 06978, South Korea
| | - Ayman A Ghfar
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Gaurav Sharma
- Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones Científicas (IPNA-CSIC), Avda. Astrofísico Fco. Sánchez 3, 38206, La Laguna, Spain
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14
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Rogolino A, Silva IF, Tarakina NV, da Silva MAR, Rocha GFSR, Antonietti M, Teixeira IF. Modified Poly(Heptazine Imides): Minimizing H 2O 2 Decomposition to Maximize Oxygen Reduction. ACS APPLIED MATERIALS & INTERFACES 2022; 14:49820-49829. [PMID: 36315872 PMCID: PMC9650642 DOI: 10.1021/acsami.2c14872] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
Photocatalysis provides a sustainable pathway to produce the consumer chemical H2O2 from atmospheric O2 via an oxygen reduction reaction (ORR). Such an alternative is attractive to replace the cumbersome traditional anthraquinone method for H2O2 synthesis on a large scale. Carbon nitrides have shown very interesting results as heterogeneous photocatalysts in ORR because their covalent two-dimensional (2D) structure is believed to increase selectivity toward the two-electron process. However, an efficient and scalable application of carbon nitrides for this reaction is far from being achieved. Poly(heptazine imides) (PHIs) are a more powerful subgroup of carbon nitrides whose structure provides high crystallinity and a scaffold to host transition-metal single atoms. Herein, we show that PHIs functionalized with sodium and the recently reported fully protonated PHI exhibit high activity in two-electron ORR under visible light. The latter converted O2 to up to 1556 mmol L-1 h-1 g-1 H2O2 under 410 nm irradiation using inexpensive but otherwise chemically demanding glycerin as a sacrificial electron donor. We also prove that functionalization with transition metals is not beneficial for H2O2 synthesis, as the metal also catalyzes its decomposition. Transient photoluminescence spectroscopy suggests that H-PHIs exhibit higher activity due to their longer excited-state lifetime. Overall, this work highlights the high photocatalytic activity of the rarely examined fully protonated PHI and represents a step forward in the application of inexpensive covalent materials for photocatalytic H2O2 synthesis.
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Affiliation(s)
- Andrea Rogolino
- Galilean
School of Higher Education, University of
Padova, Via Venezia 20, Padova35131, Italy
| | - Ingrid F. Silva
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Mühlenberg 1, Potsdam14476, Germany
| | - Nadezda V. Tarakina
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Mühlenberg 1, Potsdam14476, Germany
| | - Marcos A. R. da Silva
- Department
of Chemistry, Federal University of São
Carlos, Washington Luis Highway, s/n Km 235, São
Carlos13565-905, São
Paulo, Brazil
| | - Guilherme F. S. R. Rocha
- Department
of Chemistry, Federal University of São
Carlos, Washington Luis Highway, s/n Km 235, São
Carlos13565-905, São
Paulo, Brazil
| | - Markus Antonietti
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Mühlenberg 1, Potsdam14476, Germany
| | - Ivo F. Teixeira
- Department
of Chemistry, Federal University of São
Carlos, Washington Luis Highway, s/n Km 235, São
Carlos13565-905, São
Paulo, Brazil
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15
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Bai L, Sun H, Wu Q, Yao W. Supported Ru Single Atoms and Clusters on P‐Doped Carbon Nitride as an Efficient Photocatalyst for H
2
O
2
Production. ChemCatChem 2022. [DOI: 10.1002/cctc.202101954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lulu Bai
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power College of Environmental & Chemical Engineering Shanghai University of Electric Power Shanghai 200090 P. R. China
| | - Hao Sun
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power College of Environmental & Chemical Engineering Shanghai University of Electric Power Shanghai 200090 P. R. China
| | - Qiang Wu
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power College of Environmental & Chemical Engineering Shanghai University of Electric Power Shanghai 200090 P. R. China
| | - Weifeng Yao
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power College of Environmental & Chemical Engineering Shanghai University of Electric Power Shanghai 200090 P. R. China
- Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092 P. R. China
- Shanghai Engineering Research Center of Heat-exchange System and Energy Saving Shanghai University of Electric Power Shanghai 200090 P. R. China
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16
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Comparison of InN/InGaN quantum dot and nanowire hydrogen peroxide and glucose photofuel cells: A case study. CHEMICAL ENGINEERING JOURNAL ADVANCES 2022. [DOI: 10.1016/j.ceja.2022.100332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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17
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Wu P, Yan S, Fang W, Wang B. Molecular Mechanism of the Mononuclear Copper Complex-Catalyzed Water Oxidation from Cluster-Continuum Model Calculations. CHEMSUSCHEM 2022; 15:e202102508. [PMID: 35080143 DOI: 10.1002/cssc.202102508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 01/21/2022] [Indexed: 06/14/2023]
Abstract
Cluster-continuum model calculations were conducted to decipher the mechanism of water oxidation catalyzed by a mononuclear copper complex. Among various O-O bond formation mechanisms investigated in this study, the most favorable pathway involved the nucleophilic attack of OH- onto the .+ L-CuII -OH- intermediate. During such process, the initial binding of OH- to the proximity of .+ L-CuII -OH- would result in the spontaneous oxidation of OH- , leading to OH⋅ radical and CuII -OH- species. The further O-O coupling between OH⋅ radical and CuII -OH- was associated with a barrier of 14.8 kcal mol-1 , leading to the formation of H2 O2 intermediate. Notably, the formation of "CuIII -O.- " species, a widely proposed active species for O-O bond formation, was found to be thermodynamically unfavorable and could be bypassed during the catalytic reactions. On the basis the present calculations, a catalytic cycle of the mononuclear copper complex-catalyzed water oxidation was proposed.
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Affiliation(s)
- Peng Wu
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 360015, P. R. China
| | - Shengheng Yan
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 360015, P. R. China
| | - Wenhan Fang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 360015, P. R. China
| | - Binju Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 360015, P. R. China
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18
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The comparative study of structural, electronic, and optical properties of hydrogen peroxide and its dihydrate under pressures: first-principle calculations. J Mol Model 2022; 28:72. [DOI: 10.1007/s00894-022-05061-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 02/17/2022] [Indexed: 10/19/2022]
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19
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Wu H, Li R, Dong J, Sun F, Jiang Y, Shen Q. Synthesis, structure and electrochemical H2O2-sensing of two silver(I) complexes with bisbenzimidazole ligands. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120847] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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20
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Zhang M, Xu H, Luo Y, Zhu J, Cheng D. Enhancing the catalytic performance of PdAu catalysts by W-induced strong interaction for the direct synthesis of H 2O 2. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00112h] [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
W-Induced strong interaction with PdAu is the key to the enhanced catalytic performance for the direct synthesis of H2O2, with WO3 species partially encapsulating the PdAu particles.
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Affiliation(s)
- Meijia Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Haoxiang Xu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Yibin Luo
- State Key Laboratory of Catalytic Materials and Reaction Engineering, RIPP, SINOPEC, Beijing 100083, People's Republic of China
| | - Jiqin Zhu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Daojian Cheng
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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21
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Tian R, Li D, Zhou T, Chu XQ, Ge D, Chen X. A facile construction of Ag/MoSe2 composite based non-enzymatic amperometric sensor for hydrogen peroxide. Dalton Trans 2022; 51:5271-5277. [DOI: 10.1039/d2dt00118g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report an electrochemical non-enzymatic method for hydrogen peroxide (H2O2) detection based on Ag nanoparticle-decorated MoSe2 (Ag/MoSe2-500) hybrid nanostructures. These hybrid nanocomposites are easily prepared by in-situ reduction of Ag+...
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22
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Shi H, Wu Q, Wu Z, Liu Y, Wang X, Huang H, Liu Y, Kang Z. A metal free catalyst for efficient and stable one-step photocatalytic production of pure hydrogen peroxide. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00008c] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogen peroxide (H2O2) is widely used as a green and clean energy. The pure H2O2 solution has attracted much attention for its special applications in many fields. Photocatalytic water splitting...
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23
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You H, Fu C, Wang M, Yang C, Shi Y, Pan H, Lin Q. Pd/CNT with controllable Pd particle size and hydrophilicity for improved direct synthesis efficiency of H 2O 2. NEW J CHEM 2022. [DOI: 10.1039/d2nj01638a] [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
Comparison of Pd catalyst performance before and after N/O doping. Schematic diagram of anchoring Pd nanoparticles on the surface of N and O doped CNT.
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Affiliation(s)
- Huan You
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, and Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang, Guizhou 550025, China
| | - Chengbing Fu
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, and Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang, Guizhou 550025, China
| | - Meng Wang
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, and Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang, Guizhou 550025, China
| | - Chunliang Yang
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, and Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang, Guizhou 550025, China
| | - Yongyong Shi
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, and Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang, Guizhou 550025, China
| | - Hongyan Pan
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, and Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang, Guizhou 550025, China
- Guizhou phosphating group liability co. LTD, Guiyang 550005, China
- State key laboratory of efficient utilization for low grade phosphate rock and its associated resources, Guiyang, Guizhou 550005, China
| | - Qian Lin
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, and Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang, Guizhou 550025, China
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24
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Synthesis of Rod-like NiO–Co3O4 Composites for Sensitive Electrochemical Detection of Hydrogen Peroxide. JOURNAL OF ANALYSIS AND TESTING 2021. [DOI: 10.1007/s41664-021-00202-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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25
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Wang J, Ma Z, Du W, Shao L. Hydrogen peroxide based oxidation of hydrazines using HBr catalyst. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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26
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Energetic complexes as promoters for the green hypergolic bipropellant of EIL-H2O2 combinations. FIREPHYSCHEM 2021. [DOI: 10.1016/j.fpc.2021.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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27
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Triandafillidi I, Kokotou MG, Lotter D, Sparr C, Kokotos CG. Aldehyde-catalyzed epoxidation of unactivated alkenes with aqueous hydrogen peroxide. Chem Sci 2021; 12:10191-10196. [PMID: 34377408 PMCID: PMC8336450 DOI: 10.1039/d1sc02360h] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 06/18/2021] [Indexed: 12/23/2022] Open
Abstract
The organocatalytic epoxidation of unactivated alkenes using aqueous hydrogen peroxide provides various indispensable products and intermediates in a sustainable manner. While formyl functionalities typically undergo irreversible oxidations when activating an oxidant, an atropisomeric two-axis aldehyde capable of catalytic turnover was identified for high-yielding epoxidations of cyclic and acyclic alkenes. The relative configuration of the stereogenic axes of the catalyst and the resulting proximity of the aldehyde and backbone residues resulted in high catalytic efficiencies. Mechanistic studies support a non-radical alkene oxidation by an aldehyde-derived dioxirane intermediate generated from hydrogen peroxide through the Payne and Criegee intermediates.
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Affiliation(s)
- Ierasia Triandafillidi
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens Panepistimiopolis 15771 Athens Greece
- Department of Chemistry, University of Basel St. Johanns-Ring 19 Basel 4056 Switzerland
| | - Maroula G Kokotou
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens Panepistimiopolis 15771 Athens Greece
| | - Dominik Lotter
- Department of Chemistry, University of Basel St. Johanns-Ring 19 Basel 4056 Switzerland
| | - Christof Sparr
- Department of Chemistry, University of Basel St. Johanns-Ring 19 Basel 4056 Switzerland
| | - Christoforos G Kokotos
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens Panepistimiopolis 15771 Athens Greece
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