51
|
Wang Z, Wu Y, Zhu Y, Li X. Exploring the mechanism of electrocatalytic water oxidation on CoO decorated Ti3C2Tx nanoplatelets. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.139969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
52
|
Photoelectrocatalysis for high-value-added chemicals production. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63923-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
53
|
Venkatesan SV, Mostaghimi AHB, Thangadurai V, Siahrostami S. Cu‐doped Ba
0.5
Sr
0.5
FeO
3‐δ
for electrochemical synthesis of hydrogen peroxide via a 2‐electron oxygen reduction reaction
1. ELECTROCHEMICAL SCIENCE ADVANCES 2022. [DOI: 10.1002/elsa.202100140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
54
|
Chong WK, Ng BJ, Er CC, Tan LL, Chai SP. Insights from density functional theory calculations on heteroatom P-doped ZnIn 2S 4 bilayer nanosheets with atomic-level charge steering for photocatalytic water splitting. Sci Rep 2022; 12:1927. [PMID: 35121781 PMCID: PMC8817050 DOI: 10.1038/s41598-022-05740-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 01/11/2022] [Indexed: 11/08/2022] Open
Abstract
ZnIn2S4 (ZIS) is an efficient photocatalyst for solar hydrogen (H2) generation from water splitting owing to its suitable band gap, excellent photocatalytic behaviour and high stability. Nevertheless, modifications are still necessary to further enhance the photocatalytic performance of ZIS for practical applications. This has led to our interest in exploring phosphorus doping on ZIS for photocatalytic water splitting, which has not been studied till date. Herein, phosphorus-doped ZnIn2S4 (P-ZIS) was modelled via Density Functional Theory to investigate the effects of doping phosphorus on the structural and electronics properties of ZIS as well as its performance toward photocatalytic water splitting. This work revealed that the replacement of S3 atom by substitutional phosphorus gave rise to the most stable P-ZIS structure. In addition, P-ZIS was observed to experience a reduction in band gap energy, an upshift of valence band maximum (VBM), an increase in electron density near VBM and a reduction of H* adsorption-desorption barrier, all of which are essential for the enhancement of the hydrogen evolution reaction. In overall, detailed theoretical analysis carried out in this work could provide critical insights towards the development of P-ZIS-based photocatalysts for efficient H2 generation via solar water splitting.
Collapse
Affiliation(s)
- Wei-Kean Chong
- Multidisciplinary Platform of Advanced Engineering, Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan , 47500, Bandar Sunway, Selangor, Malaysia
| | - Boon-Junn Ng
- Multidisciplinary Platform of Advanced Engineering, Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan , 47500, Bandar Sunway, Selangor, Malaysia
| | - Chen-Chen Er
- Multidisciplinary Platform of Advanced Engineering, Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan , 47500, Bandar Sunway, Selangor, Malaysia
| | - Lling-Lling Tan
- Multidisciplinary Platform of Advanced Engineering, Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan , 47500, Bandar Sunway, Selangor, Malaysia
| | - Siang-Piao Chai
- Multidisciplinary Platform of Advanced Engineering, Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan , 47500, Bandar Sunway, Selangor, Malaysia.
| |
Collapse
|
55
|
Wan H, Xiao X, Ma W, Zhang Y, Liu X, Liu Y, Chen G, Zhang N, Cao Y, Ma R. Electronic configuration modulation of tin dioxide by phosphorus dopant for pathway change in electrocatalytic water oxidation. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01169c] [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
Electronic configuration modulation of SnO2 nanoparticles was realized using a phosphorus dopant, contributing to the reaction pathway change of water oxidation.
Collapse
Affiliation(s)
- Hao Wan
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Xue Xiao
- State Key Laboratory of Powder Metallurgy and School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, P.R. China
| | - Wei Ma
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Ying Zhang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Xiaohe Liu
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, PR China
- State Key Laboratory of Powder Metallurgy and School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, P.R. China
| | - Yanyu Liu
- College of Physics and Materials Science, Tianjin Normal University, Tianjin 300387, PR China
| | - Gen Chen
- State Key Laboratory of Powder Metallurgy and School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, P.R. China
| | - Ning Zhang
- State Key Laboratory of Powder Metallurgy and School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, P.R. China
| | - Yijun Cao
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Renzhi Ma
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| |
Collapse
|
56
|
Sun P, Mo Z, Chen H, Song Y, Liu J, Yin W, Dai H, Chen Z, Li H, Xu H. Highly efficient photosynthesis of H2O2 via two-channel pathway photocatalytic water splitting. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01592c] [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
To overcome the problems of high energy consumption, heavy pollution and unsafety in the current H2O2 production process, extensive researches have been carried out on the low-cost, green and safety...
Collapse
|
57
|
Zeng Y, Wu G. Electrocatalytic H2O2 generation for disinfection. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63781-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
58
|
Electrochemical degradation of emerging pollutants via laser-induced graphene electrodes. CHEMICAL ENGINEERING JOURNAL ADVANCES 2021. [DOI: 10.1016/j.ceja.2021.100195] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
59
|
Nikačević P, Hegner FS, Galán-Mascarós JR, López N. Influence of Oxygen Vacancies and Surface Facets on Water Oxidation Selectivity toward Oxygen or Hydrogen Peroxide with BiVO 4. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03256] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Pavle Nikačević
- Institut Català d’Investigació Química (ICIQ), The Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans, 16, 43007 Tarragona, Spain
| | - Franziska S. Hegner
- Institut Català d’Investigació Química (ICIQ), The Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans, 16, 43007 Tarragona, Spain
| | - José Ramón Galán-Mascarós
- Institut Català d’Investigació Química (ICIQ), The Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans, 16, 43007 Tarragona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluís Companys 23, 08010 Barcelona, Spain
| | - Núria López
- Institut Català d’Investigació Química (ICIQ), The Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans, 16, 43007 Tarragona, Spain
| |
Collapse
|
60
|
Salavati-Fard T, Wang B. Significant Role of Oxygen Dopants in Photocatalytic PFCA Degradation over h-BN. ACS APPLIED MATERIALS & INTERFACES 2021; 13:46727-46737. [PMID: 34570478 DOI: 10.1021/acsami.1c13922] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The activation of the C(sp3)-F bond is extremely difficult due to its unreactive nature. The importance of this bond activation is recently highlighted because extensive distribution of perfluorocarboxylic acids (PFCAs) (CnF2n+1COOH) has emerged as a challenging environmental issue. Photocatalytic degradation of PFCAs over a few semiconducting light absorbers is known to remove these water and soil resilient contaminants but with limited efficiency. This work reports density functional theory calculations, through which we present a detailed mechanistic study of photocatalytic degradation of CF3COOH (the shortest member of the PFCA family) over hexagonal boron nitride (h-BN). Our results clearly demonstrate that the existence of point defects is necessary to activate the h-BN plane for photocatalytic dissociation of the C-F bond. Specifically, we show that vacancies create strong Lewis acid or base sites (B or N vacancy, respectively) that facilitate the activation of the C(sp3)-F bond considerably. Furthermore, this study presents vivid theoretical evidence for the significant role of oxygen dopants, which mitigate the strength of the active sites and promote PFCA degradation over h-BN. Our calculations suggest that while the very stable intermediates generated during the reaction, in the case of h-BN with B or N vacancies, practically poison the catalyst, oxygen dopants make the degradation much more plausible and controllable. This work thus provides both an explanation for recently observed photocatalytic activity of h-BN to decompose PFCAs and valuable insights for exploring defected two-dimensional materials for activating and removing the fluorine-containing contaminants from water and soil.
Collapse
Affiliation(s)
- Taha Salavati-Fard
- School of Chemical, Biological and Materials Engineering, University of Oklahoma, Norman, Oklahoma 73069, United States
| | - Bin Wang
- School of Chemical, Biological and Materials Engineering, University of Oklahoma, Norman, Oklahoma 73069, United States
| |
Collapse
|
61
|
Ye H, Yang L, Nie X, Liu K, Yang S, Zhou Y, Dong F, He H, Yang H. Dual-functional water splitting: Electro-fenton-like pollutants degradation from anode reaction and hydrogen fuel production from cathode reaction. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.139122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
62
|
Lin MF, Singh N, Liang S, Mo M, Nunes JPF, Ledbetter K, Yang J, Kozina M, Weathersby S, Shen X, Cordones AA, Wolf TJA, Pemmaraju CD, Ihme M, Wang XJ. Imaging the short-lived hydroxyl-hydronium pair in ionized liquid water. Science 2021; 374:92-95. [PMID: 34591617 DOI: 10.1126/science.abg3091] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
[Figure: see text].
Collapse
Affiliation(s)
- M-F Lin
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - N Singh
- Department of Mechanical Engineering, Stanford University , Stanford, CA 94305, USA
| | - S Liang
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA
| | - M Mo
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - J P F Nunes
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
| | - K Ledbetter
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.,Department of Physics, Stanford University, Stanford, CA 94305, USA
| | - J Yang
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.,Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - M Kozina
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - S Weathersby
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - X Shen
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - A A Cordones
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - T J A Wolf
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.,Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - C D Pemmaraju
- SIMES, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - M Ihme
- Department of Mechanical Engineering, Stanford University , Stanford, CA 94305, USA
| | - X J Wang
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| |
Collapse
|
63
|
Hwang D, Schlenker CW. Photochemistry of carbon nitrides and heptazine derivatives. Chem Commun (Camb) 2021; 57:9330-9353. [PMID: 34528956 DOI: 10.1039/d1cc02745j] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We explore the photochemistry of polymeric carbon nitride (C3N4), an archetypal organic photocatalyst, and derivatives of its structural monomer unit, heptazine (Hz). Through spectroscopic studies and computational analysis, we have observed that Hz derivatives can engage in non-innocent hydrogen bonding interactions with hydroxylic species. The photochemistry of these complexes is influenced by intermolecular nπ*/ππ* mixing of non-bonding orbitals of each component and the relative energy of intermolecular charge-transfer (CT) states. Coupling of the former to the latter appears to facilitate proton-coupled electron transfer (PCET), resulting in biradical products. We have also observed that Hz derivatives exhibit an extremely rare inverted singlet/triplet energy splitting (ΔEST). In violation of Hund's multiplicity rules, the lowest energy singlet (S1) is stabilized relative to the lowest triplet (T1) electronic excited state. Exploiting this unique inverted ΔEST character has obvious implications for transformational discoveries in solid-state OLED lighting and photovoltaics. Harnessing this inverted ΔEST, paired with light-driven intermolecular PCET reactions, may enable molecular transformations relevant for applications ranging from solar energy storage to new classes of non-triplet photoredox catalysts for pharmaceutical development. To this end, we have explored the possibility of optically controlling the photochemistry of Hz derivatives using ultrafast pump-push-probe spectroscopy. In this case, the excited state branching ratios among locally excited states of the chromophore and the reactive intermolecular CT state can be manipulated with an appropriate secondary "push" excitation pulse. These results indicate that we can predictively redirect chemical reactivity with light in this system, which is an avidly sought achievement in the field of photochemistry. Looking forward, we anticipate future opportunities for controlling heptazine photochemistry, including manipulating PCET reactivity with a diverse array of substrates and optically delivering reducing equivalents with, for example, water as a partial source of electrons and protons. Furthermore, we wholly expect that, over the next decade, materials such as Hz derivatives, that exhibit inverted ΔEST character, will spawn a significant new research effort in the field of thin-film optoelectronics, where controlling recombination via triplet excitonic states can play a critical role in determining device performance.
Collapse
Affiliation(s)
- Doyk Hwang
- Department of Chemistry, University of Washington, Seattle, Washington 98195, USA
| | - Cody W Schlenker
- Department of Chemistry, University of Washington, Seattle, Washington 98195, USA.,Molecular Engineering & Sciences Institute, University of Washington, Seattle, Washington 98195-1652, USA.,Clean Energy Institute, University of Washington, Seattle, Washington 98195-1653, USA.
| |
Collapse
|
64
|
Xie J, Ma J, Zhao S, Waite TD. Flow anodic oxidation: Towards high-efficiency removal of aqueous contaminants by adsorbed hydroxyl radicals at 1.5 V vs SHE. WATER RESEARCH 2021; 200:117259. [PMID: 34058481 DOI: 10.1016/j.watres.2021.117259] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 05/08/2021] [Accepted: 05/12/2021] [Indexed: 06/12/2023]
Abstract
Electrochemical advanced oxidation processes (EAOPs) have emerged as a promising water treatment alternative but major breakthroughs are still needed in order for EAOPs to be competitive with traditional treatment technologies in terms of energy cost. Most existing studies have been conducted at high potentials to generate the powerful hydroxyl radical oxidant (aqueous •OH). While adsorbed hydroxyl radicals (OH*) may form at a much lower energy cost, their possible utilization is limited due to the poor mass transfer of this highly reactive species on solid electrodes. In this report, we describe a novel flow anode system using 4-16 μm Magnéli phase titanium suboxide particles as the anode material which enables the generation of a high steady state •OH concentration (5.4 × 10-12 mol m-2) at only 1.5 V (vs SHE) in a dilute electrolyte (5 mM KH2PO4). The energy cost of removal per order of selected water contaminants (tetracycline and orange II in this study) using the flow anode is 1.5--6.7 Wh m-3, which is 1 - 4 orders of magnitude lower than that of existing techniques. The anode material used demonstrates great stability with the configuration readily scaled up. The results of this study provide new insight into a high efficiency, low cost water treatment technology for organic contaminant degradation.
Collapse
Affiliation(s)
- Jiangzhou Xie
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Jinxing Ma
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia; Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Shixin Zhao
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - T David Waite
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia; UNSW Centre for Transformational Environmental Technologies, Yixing, Jiangsu Province, 214206, PR China.
| |
Collapse
|
65
|
A Simple 1D Convection-Diffusion Model of Oxalic Acid Oxidation Using Reactive Electrochemical Membrane. MEMBRANES 2021; 11:membranes11060431. [PMID: 34200417 PMCID: PMC8228621 DOI: 10.3390/membranes11060431] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/02/2021] [Accepted: 06/03/2021] [Indexed: 11/17/2022]
Abstract
In recent years, electrochemical methods utilizing reactive electrochemical membranes (REM) have been recognized as the most promising technologies for the removal of organic pollutants from water. In this paper, we propose a 1D convection-diffusion-reaction model concerning the transport and oxidation of oxalic acid (OA) and oxygen evolution in the flow-through electrochemical oxidation system with REM. It allows the determination of unknown parameters of the system by treatment of experimental data and predicts the behavior of the electrolysis setup. There is a good agreement in calculated and experimental data at different transmembrane pressures and initial concentrations of OA. The model provides an understanding of the processes occurring in the system and gives the concentration, current density, potential, and overpotential distributions in REM. The dispersion coefficient was determined as a fitting parameter and it is in good agreement with literary data for similar REMs. It is shown that the oxygen evolution reaction plays an important role in the process even under the kinetic limit, and its contribution decreases with increasing total organic carbon flux through the REM.
Collapse
|
66
|
Abstract
Hydrogen peroxide (H2O2) has recently received much attention as a safe and clean energy carrier for hydrogen molecules. In this study, based on direct ab initio molecular dynamics (AIMD) calculations, we demonstrated that H2O2 is directly formed via the photoelectron detachment of O-(H2O)n (n = 1-6) (water clusters of an oxygen radical anion). Three electronic states of oxygen atoms were examined in the calculations: O(X)(H2O)n (X = 3P, 1D, and 1S states). After the photoelectron detachment of O-(H2O)n (n = 1) to the 1S state, a complex comprising O(1S) and H2O, O(1S)-OH2, was formed. A hydrogen atom of H2O immediately transferred to O(1S) during an intracluster reaction to form H2O2 as the final product. Simulations were run to obtain a total of 33 trajectories for n = 1 that all led to the formation of H2O2. The average reaction time of H2O2 formation was calculated to be 57.7 fs in the case of n = 1, indicating that the reaction was completed within 100 fs of electron detachment. All the reaction systems O(1S)(H2O)n (n = 1-6) indicated the formation of H2O2 by the same mechanism. The reaction times for n = 2-6 were calculated to range between 80 and 180 fs, indicating that the reaction for n = 1 is faster than that of the larger clusters, that is, the larger the cluster size, the slower the reaction is. The reaction dynamics of the triplet O(3P) and singlet O(1D) potential energy surfaces were calculated for comparison. All calculations yielded the dissociation product O(X)(H2O)n → O(X) + (H2O)n (X = 3P and 1D), indicating that the O(1S) state contributes to the formation of H2O2. The reaction mechanism was discussed based on the theoretical results.
Collapse
Affiliation(s)
- Hiroto Tachikawa
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| |
Collapse
|
67
|
Wang H, Chen BH, Liu DJ. Metal-Organic Frameworks and Metal-Organic Gels for Oxygen Electrocatalysis: Structural and Compositional Considerations. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2008023. [PMID: 33984166 DOI: 10.1002/adma.202008023] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 02/26/2021] [Indexed: 06/12/2023]
Abstract
Increasing demand for sustainable and clean energy is calling for the next-generation energy conversion and storage technologies such as fuel cells, water electrolyzers, CO2 /N2 reduction electrolyzers, metal-air batteries, etc. All these electrochemical processes involve oxygen electrocatalysis. Boosting the intrinsic activity and the active-site density through rational design of metal-organic frameworks (MOFs) and metal-organic gels (MOGs) as precursors represents a new approach toward improving oxygen electrocatalysis efficiency. MOFs/MOGs afford a broad selection of combinations between metal nodes and organic linkers and are known to produce electrocatalysts with high surface areas, variable porosity, and excellent activity after pyrolysis. Some recent studies on MOFs/MOGs for oxygen electrocatalysis and their new perspectives in synthesis, characterization, and performance are discussed. New insights on the structural and compositional design in MOF/MOG-derived oxygen electrocatalysts are summarized. Critical challenges and future research directions are also outlined.
Collapse
Affiliation(s)
- Hao Wang
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Biao-Hua Chen
- College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China
| | - Di-Jia Liu
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, IL, 60637, USA
| |
Collapse
|
68
|
Mareev S, Skolotneva E, Cretin M, Nikonenko V. Modeling the Formation of Gas Bubbles inside the Pores of Reactive Electrochemical Membranes in the Process of the Anodic Oxidation of Organic Compounds. Int J Mol Sci 2021; 22:ijms22115477. [PMID: 34067406 PMCID: PMC8197004 DOI: 10.3390/ijms22115477] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 05/17/2021] [Accepted: 05/19/2021] [Indexed: 12/02/2022] Open
Abstract
The use of reactive electrochemical membranes (REM) in flow-through mode during the anodic oxidation of organic compounds makes it possible to overcome the limitations of plate anodes: in the case of REM, the area of the electrochemically active surface is several orders of magnitude larger, and the delivery of organic compounds to the reaction zone is controlled by convective flow rather than diffusion. The main problem with REM is the formation of fouling and gas bubbles in the pores, which leads to a decrease in the efficiency of the process because the hydraulic resistance increases and the electrochemically active surface is shielded. This work aims to study the processes underlying the reduction in the efficiency of anodic oxidation, and in particular the formation of gas bubbles and the recharge of the REM pore surface at a current density exceeding the limiting kinetic value. We propose a simple one-dimensional non-stationary model of the transport of diluted species during the anodic oxidation of paracetamol using REM to describe the above effects. The processing of the experimental data was carried out. It was found that the absolute value of the zeta potential of the pore surface decreases with time, which leads to a decrease in the permeate flux due to a reduction in the electroosmotic flow. It was shown that in the solution that does not contain organic components, gas bubbles form faster and occupy a larger pore fraction than in the case of the presence of paracetamol; with an increase in the paracetamol concentration, the gas fraction decreases. This behavior is due to a decrease in the generation of oxygen during the recombination reaction of the hydroxyl radicals, which are consumed in the oxidation reaction of the organic compounds. Because the presence of bubbles increases the hydraulic resistance, the residence time of paracetamol—and consequently its degradation degree—increases, but the productivity goes down. The model has predictive power and, after simple calibration, can be used to predict the performance of REM anodic oxidation systems.
Collapse
Affiliation(s)
- Semyon Mareev
- Physical Chemistry Department, Kuban State University, 149 Stavropolskaya st., 350040 Krasnodar, Russia; (S.M.); (E.S.)
| | - Ekaterina Skolotneva
- Physical Chemistry Department, Kuban State University, 149 Stavropolskaya st., 350040 Krasnodar, Russia; (S.M.); (E.S.)
| | - Marc Cretin
- Institut Européen des Membranes-UMR5635, 34095 Montpellier, France;
| | - Victor Nikonenko
- Physical Chemistry Department, Kuban State University, 149 Stavropolskaya st., 350040 Krasnodar, Russia; (S.M.); (E.S.)
- Correspondence: ; Tel.: +7-918-414-5816
| |
Collapse
|
69
|
Xue Y, Wang Y, Pan Z, Sayama K. Electrochemical and Photoelectrochemical Water Oxidation for Hydrogen Peroxide Production. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202011215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Yudong Xue
- College of Engineering Korea University Seoul 136-701 Republic of Korea
- Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Yunting Wang
- School of Chemical and Environmental Engineering China University of Mining and Technology of Beijing Beijing 100083 P. R. China
| | - Zhenhua Pan
- Department of Applied Chemistry Faculty of Science and Technology Chuo University 1-13-27 Kasuga, Bunkyo Tokyo 112-8551 Japan
| | - Kazuhiro Sayama
- Global Zero Emission Research Center (GZR) National Institute of Advanced Industrial Science and Technology (AIST) Central 5, 1-1-1 Higashi Tsukuba Ibaraki 305-8565 Japan
| |
Collapse
|
70
|
Wang L, Lu Y, Han N, Dong C, Lin C, Lu S, Min Y, Zhang K. Suppressing Water Dissociation via Control of Intrinsic Oxygen Defects for Awakening Solar H 2 O-to-H 2 O 2 Generation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2100400. [PMID: 33690971 DOI: 10.1002/smll.202100400] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Indexed: 06/12/2023]
Abstract
BiVO4 theoretically has a thermodynamic activity trend toward highly selective water oxidative H2 O2 formation, but it is more inclined to generate O2 in practical. The influence of intrinsic oxygen vacancy (Ovac ), especially, on surface reactivity, has never been considered as a possible activity loss mechanism in the synthetic BiVO4 . In this work, it is theoretically and experimentally demonstrated that the intrinsic surface Ovac is responsible for lower H2 O2 evolution activity via promoting water dissociation to form intermediate. Through an annealing process under a V2 O5 rich atmosphere, the surface Ovac can be eliminated that awakens the photoelectrochemical (PEC) water oxidative H2 O2 activity in a NaHCO3 electrolyte, which achieves an average of 58.4%, and increases by up to 4.28 times of the one annealed in air. This work offers a general understanding of catalytic activity loss and may be extended to other photo or electrocatalysts for catalytic selectivity regulation.
Collapse
Affiliation(s)
- Luyang Wang
- College of New Materials and New Energies, Shenzhen Technology University, Shenzhen, Guangdong, 518118, P. R. China
| | - Yuan Lu
- MIIT Key Laboratory of Advanced Display Material and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Nannan Han
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai, 200090, P. R. China
| | - Chaoran Dong
- MIIT Key Laboratory of Advanced Display Material and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Cheng Lin
- MIIT Key Laboratory of Advanced Display Material and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Siyu Lu
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450000, P. R. China
| | - Yulin Min
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai, 200090, P. R. China
| | - Kan Zhang
- MIIT Key Laboratory of Advanced Display Material and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| |
Collapse
|
71
|
Xue Y, Wang Y, Pan Z, Sayama K. Electrochemical and Photoelectrochemical Water Oxidation for Hydrogen Peroxide Production. Angew Chem Int Ed Engl 2021; 60:10469-10480. [DOI: 10.1002/anie.202011215] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Indexed: 12/18/2022]
Affiliation(s)
- Yudong Xue
- College of Engineering Korea University Seoul 136-701 Republic of Korea
- Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Yunting Wang
- School of Chemical and Environmental Engineering China University of Mining and Technology of Beijing Beijing 100083 P. R. China
| | - Zhenhua Pan
- Department of Applied Chemistry Faculty of Science and Technology Chuo University 1-13-27 Kasuga, Bunkyo Tokyo 112-8551 Japan
| | - Kazuhiro Sayama
- Global Zero Emission Research Center (GZR) National Institute of Advanced Industrial Science and Technology (AIST) Central 5, 1-1-1 Higashi Tsukuba Ibaraki 305-8565 Japan
| |
Collapse
|
72
|
Anantharaj S, Pitchaimuthu S, Noda S. A review on recent developments in electrochemical hydrogen peroxide synthesis with a critical assessment of perspectives and strategies. Adv Colloid Interface Sci 2021; 287:102331. [PMID: 33321333 DOI: 10.1016/j.cis.2020.102331] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 11/16/2020] [Accepted: 11/24/2020] [Indexed: 10/22/2022]
Abstract
Electrochemical hydrogen peroxide synthesis using two-electron oxygen electrochemistry is an intriguing alternative to currently dominating environmentally unfriendly and potentially hazardous anthraquinone process and noble metals catalysed direct synthesis. Electrocatalytic two-electron oxygen reduction reaction (ORR) and water oxidation reaction (WOR) are the source of electrochemical hydrogen peroxide generation. Various electrocatalysts have been used for the same and were characterized using several electroanalytical, chemical, spectroscopic and chromatographic tools. Though there have been a few reviews summarizing the recent developments in this field, none of them have unified the approaches in catalysts' design, criticized the ambiguities and flaws in the methods of evaluation, and emphasized the role of electrolyte engineering. Hence, we dedicated this review to discuss the recent trends in the catalysts' design, performance optimization, evaluation perspectives and their appropriateness and opportunities with electrolyte engineering. In addition, particularized discussions on fundamental oxygen electrochemistry, additional methods for precise screening, and the role of solution chemistry of synthesized hydrogen peroxide are also presented. Thus, this review discloses the state-of-the-art in an unpresented view highlighting the challenges, opportunities, and alternative perspectives.
Collapse
|
73
|
|
74
|
Craig MJ, Barda-Chatain R, García-Melchor M. Fundamental insights and rational design of low-cost polyoxometalates for the oxygen evolution reaction. J Catal 2021. [DOI: 10.1016/j.jcat.2020.11.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
75
|
Sharma K, Sharma S, Thapa S, Bhagat M, Kumar V, Sharma V. Nanohydroxyapatite-, Gelatin-, and Acrylic Acid-Based Novel Dental Restorative Material. ACS OMEGA 2020; 5:27886-27895. [PMID: 33163772 PMCID: PMC7643135 DOI: 10.1021/acsomega.0c03125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 10/13/2020] [Indexed: 06/11/2023]
Abstract
The aim of this study was to prepare a novel dental restorative material (NDRM) and to understand its cell viability behavior. The hydroxyapatite (HA) nanopowder was synthesized using a wet chemical precipitation method using calcium hydroxide and orthophosphoric acid as precursors. The as-prepared HA nanopowder was annealed at different temperatures to get a pure compound with a Ca/P ratio close to 1.67. The optimal temperature was found to be 600 °C, whereas at a higher temperature, HA starts decomposing into CaO. The preparation of NDRM was conducted in two steps. The first step comprises the preparation of HA nanopowder- and gelatin (G)-based film using microwave heating. In the second step, the homogenized mixture of the HA-G film was mixed with different amounts of acrylic acid to form a self-flowable NDRM paste. Further, both these materials (HA nanopowder and NDRM) were characterized using FTIR, XRD, and SEM-EDX analyses. The FTIR and XRD results show the peaks corresponding to natural bone apatite and therefore confirm the formation of HA. EDX results showed the presence of Ca and P in HA nanopowder and NDRM with Ca/P ratios of 1.79 and 1.63, respectively. Synthesized NDRM was also analyzed for its in vitro cytotoxic and reproductive viability potential against normal cells using MTT and clonogenic assay. The analysis showed significantly higher cellular viability on the treatment with NDRM when compared to HA nanopowder as well as no colony suppression by both materials was observed on the normal cell line (fR2) even after exposure for 24 h, indicating its nontoxicity. The synthesized NDRM therefore can be considered as a promising candidate for dental caries restoration applications.
Collapse
Affiliation(s)
- Kashma Sharma
- Institute
of Forensic Science & Criminology, Panjab
University, Chandigarh 160014, India
| | - Shreya Sharma
- Institute
of Forensic Science & Criminology, Panjab
University, Chandigarh 160014, India
| | - Sonia Thapa
- Cancer
Pharmacology Division, CSIR-IIIM, Canal Road, Jammu 180001, Jammu
and Kashmir, India
| | - Madhulika Bhagat
- School
of Biotechnology, University of Jammu, Jammu 180006, Jammu and Kashmir, India
| | - Vijay Kumar
- Department
of Physics, National Institute of Technology
(NIT), Hazratbal, Srinagar 190006, Jammu
and Kashmir, India
| | - Vishal Sharma
- Institute
of Forensic Science & Criminology, Panjab
University, Chandigarh 160014, India
| |
Collapse
|
76
|
Liu Y, Liu F, Ding N, Hu X, Shen C, Li F, Huang M, Wang Z, Sand W, Wang CC. Recent advances on electroactive CNT-based membranes for environmental applications: The perfect match of electrochemistry and membrane separation. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.03.011] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
77
|
Li L, Hu Z, Yu JC. On‐Demand Synthesis of H
2
O
2
by Water Oxidation for Sustainable Resource Production and Organic Pollutant Degradation. Angew Chem Int Ed Engl 2020; 59:20538-20544. [DOI: 10.1002/anie.202008031] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/09/2020] [Indexed: 11/06/2022]
Affiliation(s)
- Lejing Li
- Department of Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong China
| | - Zhuofeng Hu
- School of Environmental Science and Engineering Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology Sun Yat-sen University Guangzhou 510275 China
| | - Jimmy C. Yu
- Department of Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong China
| |
Collapse
|
78
|
Li L, Hu Z, Yu JC. On‐Demand Synthesis of H
2
O
2
by Water Oxidation for Sustainable Resource Production and Organic Pollutant Degradation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008031] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lejing Li
- Department of Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong China
| | - Zhuofeng Hu
- School of Environmental Science and Engineering Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology Sun Yat-sen University Guangzhou 510275 China
| | - Jimmy C. Yu
- Department of Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong China
| |
Collapse
|
79
|
Kebede WL, Kuo DH, Bekena FT, Duresa LW. Highly efficient In-Mo(O,S) 2 oxy-sulfide for degradation of organic pollutants under visible light irradiation: An example of photocatalyst on its dye selectivity. CHEMOSPHERE 2020; 254:126823. [PMID: 32334264 DOI: 10.1016/j.chemosphere.2020.126823] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 04/06/2020] [Accepted: 04/15/2020] [Indexed: 06/11/2023]
Abstract
Environmentally toxic organic pollutants, namely methylene blue (MB), neutral red (NR), Rhodamine B (RhB), and methyl orange (MO) dyes contain highly toxic, carcinogenic, non-biodegradable, and colored pigments which cause harm for humans and aquatic organisms even at low concentrations. To detoxify these toxic organic pollutants from the wastewater, the bimetallic solid solution-typed In-Mo(O,S)2 catalyst with various indium (In) contents were synthesized at low temperature through a simple precipitation method. The morphological, structural, chemical compositions, electrochemical and optical properties of the catalysts were thoroughly characterized. The photodegradation performance of the In-Mo(O,S)2 catalysts over the cationic, anionic and neutral dyes were studied under visible light irradiation. It has been observed that the photocatalytic activity was enhanced as In was added to the Mo(O,S)2 catalyst, and In-Mo(O,S)2-20 was found to be the best composition to completely degrade four organic dyes. The dye degradation had rate constant values of 9.5 × 10-2 min-1, 6.3 × 10-2 min-1, 4.4 × 10-2 min-1, and 15.7 × 10-1 min-1 for MB (20 ppm), NR (20 ppm), RhB (10 ppm), and MO (10 ppm) dyes, respectively. The active species for degradation of MB is different from those for RhB and MO. Single phase In-Mo(O,S)2-20 capable to degrade four kinds of dyes at a fast rate is a good photocatalyst.
Collapse
Affiliation(s)
- Worku Lakew Kebede
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No.43, Sec. 4, Keelung Road, Taipei, 10607, Taiwan
| | - Dong-Hau Kuo
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No.43, Sec. 4, Keelung Road, Taipei, 10607, Taiwan.
| | - Fekadu Tadesse Bekena
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No.43, Sec. 4, Keelung Road, Taipei, 10607, Taiwan
| | - Lalisa Wakjira Duresa
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No.43, Sec. 4, Keelung Road, Taipei, 10607, Taiwan
| |
Collapse
|
80
|
Function-switchable metal/semiconductor junction enables efficient photocatalytic overall water splitting with selective water oxidation products. Sci Bull (Beijing) 2020; 65:1389-1395. [PMID: 36659218 DOI: 10.1016/j.scib.2020.04.042] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/17/2020] [Accepted: 04/23/2020] [Indexed: 01/21/2023]
Abstract
A novel metal/semiconductor photocatalyst, Cu nanoparticles (NPs) modified TiO2 hollow spheres (Cu/TiO2), was designed for efficient photocatalytic overall water splitting (POWS) under both ultraviolet (UV) and visible (Vis) light. This Cu/TiO2 photocatalyst possesses excellent POWS performance under Vis light at the highest level among the reported TiO2-based photocatalysts. Interestingly, the metal/semiconductor junction formed between Cu and TiO2 enables controlled water-oxidation product selectivity (H2O2 or O2) via different reaction pathways regulated by irradiation wavelengths. Under UV light, the electrons excited in TiO2 are captured by Cu NPs through the Cu/TiO2 Schottky interface for H2 production, with the photoholes in TiO2 producing H2O2 through a two-electron process; whilst under Vis light, Cu NPs act as plasmon to inject hot electrons to TiO2 for H2 production, while O2 is produced by hot holes on Cu NPs via a four-electron process. This rational design of function-switchable metal/semiconductor junction may be helpful to understand the mechanisms for POWS with desired gas/liquid water-oxidation products.
Collapse
|
81
|
Yang Y, Wan H, Chen G, Zhang N, Li J, Ma W, Liu X, Ma R. Multi-shelled cobalt-nickel oxide/phosphide hollow spheres for an efficient oxygen evolution reaction. Dalton Trans 2020; 49:10918-10927. [PMID: 32720957 DOI: 10.1039/d0dt01523g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Because of their low cost and Earth-abundant characteristics, materials based on 3d transition metals have attracted great research interest and are considered as promising electrocatalysts for the oxygen evolution reaction (OER), besides the commercial noble metal-based materials, in recent years. In order to improve electrocatalytic activity, it is necessary to design the structures and compositions of electrocatalysts. In this study, a series of multi-shelled CoxNi1-x oxide/phosphide hollow spheres with tunable element ratios were prepared. The electrocatalytic activity of the multi-shelled CoxNi1-x oxide/phosphide is strongly dependent on the molar ratio of Co and Ni. Based on the combined advantages of complex structures and compositions, the multi-shelled Co0.5Ni0.5 oxide/phosphide displays outstanding electrocatalytic performance in terms of high activity and stable durability for the OER, surpassing those of RuO2 and multi-shelled CoxNi1-x oxide/phosphide with other element ratios of Co and Ni. This result suggests a great possibility of rationally designing the composition for highly efficient electrocatalysts.
Collapse
Affiliation(s)
- Yaru Yang
- School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, P. R. China.
| | | | | | | | | | | | | | | |
Collapse
|
82
|
Hu X, Zeng X, Liu Y, Lu J, Zhang X. Carbon-based materials for photo- and electrocatalytic synthesis of hydrogen peroxide. NANOSCALE 2020; 12:16008-16027. [PMID: 32720961 DOI: 10.1039/d0nr03178j] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The high demand for hydrogen peroxide (H2O2) has been dominantly supplied by the anthraquinone process for various applications globally, including chemical synthesis and wastewater treatment. However, the centralized manufacturing and intensive energy input and waste output are significant challenges associated with this process. Accordingly, the on-site production of H2O2via electro- and photocatalytic water oxidation and oxygen reduction partially is greener and easier to handle and has recently emerged with extensive research aiming to seek active, selective and stable catalysts. Herein, we review the current status and future perspectives in this field focused on carbon-based catalysts and their hybrids, since they are relatively inexpensive, bio-friendly and flexible for structural modulation. We present state-of-the-art progress, typical strategies for catalyst engineering towards selective and active H2O2 production, discussion on electro- and photochemical mechanisms and H2O2 formation through both reductive and oxidative reaction pathways, and conclude with the key challenges to be overcome. We expect promising developments would be inspired in the near future towards practical decentralized H2O2 production and its direct use.
Collapse
Affiliation(s)
- Xiaoyi Hu
- Department of Chemical Engineering, Monash University, Clayton, VIC 3168, Australia.
| | | | | | | | | |
Collapse
|
83
|
Saputera WH, Rizkiana J, Wulandari W, Sasongko D. Role of defects on TiO 2/SiO 2 composites for boosting photocatalytic water splitting. RSC Adv 2020; 10:27713-27719. [PMID: 35516932 PMCID: PMC9055622 DOI: 10.1039/d0ra05745b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 07/13/2020] [Indexed: 11/21/2022] Open
Abstract
Defect engineering of semiconductor photocatalysts is considered as an evolving strategy to adjust their physiochemical properties and boost photoreactivity of the materials. Here, hydrogenation and UV light pre-treatment of TiO2/SiO2 composite with the ratio of 9 : 1 (9TiO2/1SiO2) were conducted to generate Ti3+ and non-bridging oxygen holes center (NBOHC) defects, respectively. The 9TiO2/1SiO2 composite exhibited much higher photocatalytic water splitting than neat TiO2 and SiO2 as a consequence of the electronic structure effects induced by the defect sites. Electron paramagnetic resonance (EPR) indicated that hydrogenated and UV light pre-treated of 9TiO2/1SiO2 boosted a higher density of Ti3+ and NBOHC defect which could serve to suppress photogenerated electron-hole pair recombination and act as shallow donors to trap photoexcited electron. Overall, both defect sites in 9TiO2/1SiO2 delivered advantageous characteristic relative to neat TiO2 and SiO2 with the finding clearly illustrating the value of defect engineering in enhancing photocatalytic performance.
Collapse
Affiliation(s)
- Wibawa Hendra Saputera
- Research Group on Energy and Chemical Engineering Processing System, Department of Chemical Engineering, Institut Teknologi Bandung Bandung 40132 Indonesia
| | - Jenny Rizkiana
- Research Group on Energy and Chemical Engineering Processing System, Department of Chemical Engineering, Institut Teknologi Bandung Bandung 40132 Indonesia
| | - Winny Wulandari
- Research Group on Energy and Chemical Engineering Processing System, Department of Chemical Engineering, Institut Teknologi Bandung Bandung 40132 Indonesia
| | - Dwiwahju Sasongko
- Research Group on Energy and Chemical Engineering Processing System, Department of Chemical Engineering, Institut Teknologi Bandung Bandung 40132 Indonesia
| |
Collapse
|
84
|
Siahrostami S, Villegas SJ, Bagherzadeh Mostaghimi AH, Back S, Farimani AB, Wang H, Persson KA, Montoya J. A Review on Challenges and Successes in Atomic-Scale Design of Catalysts for Electrochemical Synthesis of Hydrogen Peroxide. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01641] [Citation(s) in RCA: 126] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Samira Siahrostami
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta Canada T2N 1N4
| | - Santiago Jimenez Villegas
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta Canada T2N 1N4
| | | | - Seoin Back
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 04107, Republic of Korea
| | - Amir Barati Farimani
- Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Haotian Wang
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas United States
| | - Kristin Aslaug Persson
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Joseph Montoya
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
- Toyota Research Institute, 4440 EL Camino Real, Los Altos, California 94022, United States
| |
Collapse
|
85
|
Gao J, Huang X, Cai W, Wang Q, Jia C, Liu B. Rational Design of an Iridium-Tungsten Composite with an Iridium-Rich Surface for Acidic Water Oxidation. ACS APPLIED MATERIALS & INTERFACES 2020; 12:25991-26001. [PMID: 32428393 DOI: 10.1021/acsami.0c05906] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Developing highly active and stable water oxidation catalysts with reduced cost in acidic media plays a critical role in clean energy technologies such as fuel cells and electrolyzers. Precious iridium-based oxides are still the only oxygen evolution reaction (OER) catalysts with reasonable activity and stability in acid. Herein, we design iridium-tungsten composites with a metallic tungsten-rich core and an iridium-rich surface by the sol-gel method followed by hydrogen reduction. The thus obtained iridium-tungsten catalyst shows much higher intrinsic water oxidation activity (100 mA/mgIr at an overpotential of 290 mV) and stability (100 h at 10 mA/cm2geom) together with reduced iridium content (33 wt % only) as compared with pure iridium oxide. An operando method using H2O2 as a probe molecule is developed to determine the relative adsorption strength of the reaction intermediates (*OH and *OOH) in the OER process. Detailed characterization shows that the tungsten-incorporated surface not only modulates the adsorption energy of oxygen intermediates on iridium but also enhances the stability of iridium species in acid, while the metallic tungsten core exhibits high electrical conductivity, all of which collectively give rise to the much enhanced catalytic performance of iridium-tungsten composite in acidic water oxidation. A single-membrane electrode assembly is further prepared to demonstrate the advantages and potential application of iridium-tungsten composite in practical proton exchange membrane electrolyzers.
Collapse
Affiliation(s)
- Jiajian Gao
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
| | - Xiang Huang
- Department of Physics, Southern University of Science and Technology, No. 1088 Xueyuan Avenue, Nanshan District, Shenzhen 518055, China
| | - Weizheng Cai
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
| | - Qilun Wang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
| | - Chunmiao Jia
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
| | - Bin Liu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
| |
Collapse
|
86
|
Xue SG, Tang L, Tang YK, Li CX, Li ML, Zhou JJ, Chen W, Zhu F, Jiang J. Selective Electrocatalytic Water Oxidation to Produce H 2O 2 Using a C,N Codoped TiO 2 Electrode in an Acidic Electrolyte. ACS APPLIED MATERIALS & INTERFACES 2020; 12:4423-4431. [PMID: 31850743 DOI: 10.1021/acsami.9b16937] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Production of hydrogen peroxide (H2O2) via in situ electrochemical water oxidation possesses great potential applications in the energy and environment fields. In this work, for the first time, we reported a C,N codoped TiO2 electrode for selective electrocatalytic water oxidation to produce H2O2 in an acidic electrolyte. An electrochemical anodic oxidation method combined with postcalcination in the presence of urea was applied to fabricate such a C,N codoped TiO2 electrode, which was evidenced by detail structural characterizations. The calcination temperature and urea atmosphere were found to play key roles in its catalytic performances; the optimized 600N sample exhibited an onset potential of 2.66 V (vs Ag/AgCl) and a Tafel slope of 51 mV dec-1 at pH 3. Under the optimal applied potential, the cumulative H2O2 concentration for this sample reached 0.29 μmol L-1 cm-2 h-1. More importantly, a simple recalcination strategy was developed to recover the deactivation electrode. This study proposed an efficient C,N codoped TiO2 electrode toward water oxidation to selectively produce H2O2 in the acidic electrolyte, which could be further used to in situ generate H2O2 for the energy- and environment-related fields with water as the precursor.
Collapse
|
87
|
Sun Y, Han L, Strasser P. A comparative perspective of electrochemical and photochemical approaches for catalytic H2O2 production. Chem Soc Rev 2020; 49:6605-6631. [DOI: 10.1039/d0cs00458h] [Citation(s) in RCA: 131] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Recent advances in the design, preparation, and applications of different catalysts for electrochemical and photochemical H2O2 production are summarized, and some invigorating perspectives for future developments are also provided.
Collapse
Affiliation(s)
- Yanyan Sun
- Department of Chemistry
- Technical University of Berlin
- 10623 Berlin
- Germany
| | - Lei Han
- College of Materials Science and Engineering
- Hunan University
- Changsha
- China
| | - Peter Strasser
- Department of Chemistry
- Technical University of Berlin
- 10623 Berlin
- Germany
| |
Collapse
|
88
|
Chen L, Wang L, Wan Y, Zhang Y, Qi Z, Wu X, Xu H. Acetylene and Diacetylene Functionalized Covalent Triazine Frameworks as Metal-Free Photocatalysts for Hydrogen Peroxide Production: A New Two-Electron Water Oxidation Pathway. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1904433. [PMID: 31782554 DOI: 10.1002/adma.201904433] [Citation(s) in RCA: 118] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 11/13/2019] [Indexed: 06/10/2023]
Abstract
Metal-free polymer photocatalysts have shown great promise for photocatalytic H2 O2 production via two-electron reduction of molecular O2 . The other half-reaction, which is the two-electron oxidation of water, still remains elusive toward H2 O2 production. However, enabling this water oxidation pathway is critically important to improve the yield and maximize atom utilization efficiency. It is shown that introducing acetylene (CC) or diacetylene (CCCC) moieties into covalent triazine frameworks (CTFs) can remarkably promote photocatalytic H2 O2 production. This enhancement is inherent to the incorporated carbon-carbon triple bonds which are essential in modulating the electronic structures of CTFs and suppressing charge recombinations. Furthermore, the acetylene and diacetylene moieties can significantly reduce the energy associated with OH* formation and thus enable a new two-electron oxidation pathway toward H2 O2 production. The study unveils an important reaction pathway toward photocatalytic H2 O2 production, reflecting that precise control over the chemical structures of polymer photocatalysts is vital to achieve efficient solar-to-chemical energy conversion.
Collapse
Affiliation(s)
- Liang Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Lei Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yangyang Wan
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Ying Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Zeming Qi
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230029, China
| | - Xiaojun Wu
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Hangxun Xu
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| |
Collapse
|
89
|
Przygocki P, Ratajczak P, Béguin F. Quantification of the Charge Consuming Phenomena under High‐Voltage Hold of Carbon/Carbon Supercapacitors by Coupling Operando and Post‐Mortem Analyses. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Patryk Przygocki
- Institute of Chemistry and Technical ElectrochemistryPoznan University of Technology Berdychowo 4 60-965 Poznan Poland
| | - Paula Ratajczak
- Institute of Chemistry and Technical ElectrochemistryPoznan University of Technology Berdychowo 4 60-965 Poznan Poland
| | - François Béguin
- Institute of Chemistry and Technical ElectrochemistryPoznan University of Technology Berdychowo 4 60-965 Poznan Poland
| |
Collapse
|
90
|
Przygocki P, Ratajczak P, Béguin F. Quantification of the Charge Consuming Phenomena under High‐Voltage Hold of Carbon/Carbon Supercapacitors by Coupling Operando and Post‐Mortem Analyses. Angew Chem Int Ed Engl 2019; 58:17969-17977. [DOI: 10.1002/anie.201907914] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Patryk Przygocki
- Institute of Chemistry and Technical ElectrochemistryPoznan University of Technology Berdychowo 4 60-965 Poznan Poland
| | - Paula Ratajczak
- Institute of Chemistry and Technical ElectrochemistryPoznan University of Technology Berdychowo 4 60-965 Poznan Poland
| | - François Béguin
- Institute of Chemistry and Technical ElectrochemistryPoznan University of Technology Berdychowo 4 60-965 Poznan Poland
| |
Collapse
|
91
|
Larrazábal GO, Strøm-Hansen P, Heli JP, Zeiter K, Therkildsen KT, Chorkendorff I, Seger B. Analysis of Mass Flows and Membrane Cross-over in CO 2 Reduction at High Current Densities in an MEA-Type Electrolyzer. ACS APPLIED MATERIALS & INTERFACES 2019; 11:41281-41288. [PMID: 31603302 DOI: 10.1021/acsami.9b13081] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Cell designs that integrate membrane-electrode assemblies (MEAs) with highly selective catalysts are a promising route to reduce ohmic losses and achieve high energy efficiency in CO2 reduction at industrially relevant current densities. In this work, porous silver filtration membranes are demonstrated as simple and efficient gas-diffusion electrodes for CO2 reduction to CO at high current densities in an MEA-type device. A partial current density for CO of up to ca. 200 mA cm-2 was achieved at a cell voltage of ca. 3.3 V, in tandem with minimal H2 production. However, the analysis of cathodic and anodic outlet streams revealed that CO2 cross-over across the anion-exchange membranes, mostly in the form of CO32- but partially as HCOO- generated over the cathode, actually exceeds the amount of CO2 converted to the target product, resulting in a poor utilization of the reactant and in the early onset of mass transfer limitations. In addition, CO2 cross-over leads to a nonstoichiometric decrease of the outlet flow rate from the cathodic compartment. This effect can lead to a substantial overestimation of catalytic performance if the inlet flow rate of CO2 is used as reference for calculating partial current densities and Faradaic efficiencies. The results of this work highlight the importance of carrying out a carbon balance, in addition to traditional measurements of activity and selectivity, to adequately assess the performance of CO2 reduction devices at high current densities, and inform future efforts aimed at mitigating membrane cross-over in MEA-type electrolyzers for CO2 reduction.
Collapse
Affiliation(s)
- Gastón O Larrazábal
- Surface Physics and Catalysis (SurfCat) Section, Department of Physics , Technical University of Denmark , 2800 Kgs. Lyngby , Denmark
| | - Patrick Strøm-Hansen
- Surface Physics and Catalysis (SurfCat) Section, Department of Physics , Technical University of Denmark , 2800 Kgs. Lyngby , Denmark
| | - Jens P Heli
- Surface Physics and Catalysis (SurfCat) Section, Department of Physics , Technical University of Denmark , 2800 Kgs. Lyngby , Denmark
| | - Kevin Zeiter
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences , ETH Zurich , 8093 Zurich , Switzerland
| | | | - Ib Chorkendorff
- Surface Physics and Catalysis (SurfCat) Section, Department of Physics , Technical University of Denmark , 2800 Kgs. Lyngby , Denmark
| | - Brian Seger
- Surface Physics and Catalysis (SurfCat) Section, Department of Physics , Technical University of Denmark , 2800 Kgs. Lyngby , Denmark
| |
Collapse
|
92
|
Yang M, He H, Du J, Peng H, Ke G, Zhou Y. Insight into the Kinetic Influence of Oxygen Vacancies on the WO 3 Photoanodes for Solar Water Oxidation. J Phys Chem Lett 2019; 10:6159-6165. [PMID: 31552737 DOI: 10.1021/acs.jpclett.9b02365] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Improvements to solar water oxidation performance for WO3 photoanodes due to oxygen vacancies have in general been ascribed to thermodynamic effects. Detailed insights into the water oxidation kinetics for WO3 photoanodes with oxygen vacancies are still lacking. Here, our experimental and computational investigations revealed that the water oxidation pathway on WO3 photoanodes with oxygen vacancies is more inclined to follow the four-hole pathway. This finding reasonably explained the common observations of higher faradaic efficiency for oxygen evolution, better stability, and faster kinetics for water oxidation usually achieved on the WO3 photoanodes with oxygen vacancies.
Collapse
Affiliation(s)
- Minji Yang
- State Key Laboratory of Environmental-Friendly Energy Materials, School of Materials Science and Engineering , Southwest University of Science and Technology , Mianyang 621010 , China
| | - Huichao He
- State Key Laboratory of Environmental-Friendly Energy Materials, School of Materials Science and Engineering , Southwest University of Science and Technology , Mianyang 621010 , China
| | - Jinyan Du
- State Key Laboratory of Environmental-Friendly Energy Materials, School of Materials Science and Engineering , Southwest University of Science and Technology , Mianyang 621010 , China
| | - Huarong Peng
- College of Chemistry and Chemical Engineering , Chongqing University , Chongqing 400030 , China
| | - Gaili Ke
- State Key Laboratory of Environmental-Friendly Energy Materials, School of Materials Science and Engineering , Southwest University of Science and Technology , Mianyang 621010 , China
| | - Yong Zhou
- Ecomaterials and Renewable Energy Research Center, School of Physics , Nanjing University , Nanjing 211102 , China
| |
Collapse
|
93
|
Hu C, Huang YC, Chang AL, Nomura M. Amine functionalized ZIF-8 as a visible-light-driven photocatalyst for Cr(VI) reduction. J Colloid Interface Sci 2019; 553:372-381. [DOI: 10.1016/j.jcis.2019.06.040] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 06/10/2019] [Accepted: 06/12/2019] [Indexed: 11/25/2022]
|
94
|
Wang Q, Domen K. Particulate Photocatalysts for Light-Driven Water Splitting: Mechanisms, Challenges, and Design Strategies. Chem Rev 2019; 120:919-985. [PMID: 31393702 DOI: 10.1021/acs.chemrev.9b00201] [Citation(s) in RCA: 724] [Impact Index Per Article: 144.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Solar-driven water splitting provides a leading approach to store the abundant yet intermittent solar energy and produce hydrogen as a clean and sustainable energy carrier. A straightforward route to light-driven water splitting is to apply self-supported particulate photocatalysts, which is expected to allow solar hydrogen to be competitive with fossil-fuel-derived hydrogen on a levelized cost basis. More importantly, the powder-based systems can lend themselves to making functional panels on a large scale while retaining the intrinsic activity of the photocatalyst. However, all attempts to generate hydrogen via powder-based solar water-splitting systems to date have unfortunately fallen short of the efficiency values required for practical applications. Photocatalysis on photocatalyst particles involves three sequential steps: (i) absorption of photons with higher energies than the bandgap of the photocatalysts, leading to the excitation of electron-hole pairs in the particles, (ii) charge separation and migration of these photoexcited carriers, and (iii) surface chemical reactions based on these carriers. In this review, we focus on the challenges of each step and summarize material design strategies to overcome the obstacles and limitations. This review illustrates that it is possible to employ the fundamental principles underlying photosynthesis and the tools of chemical and materials science to design and prepare photocatalysts for overall water splitting.
Collapse
Affiliation(s)
- Qian Wang
- Department of Chemical System Engineering, School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 113-8656 , Japan
| | - Kazunari Domen
- Department of Chemical System Engineering, School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 113-8656 , Japan.,Center for Energy & Environmental Science , Shinshu University , 4-17-1 Wakasato , Nagano-shi , Nagano 380-8553 , Japan
| |
Collapse
|
95
|
|
96
|
Burek BO, de Boer SR, Tieves F, Zhang W, van Schie M, Bormann S, Alcalde M, Holtmann D, Hollmann F, Bahnemann DW, Bloh JZ. Photoenzymatic Hydroxylation of Ethylbenzene Catalyzed by Unspecific Peroxygenase: Origin of Enzyme Inactivation and the Impact of Light Intensity and Temperature. ChemCatChem 2019. [DOI: 10.1002/cctc.201900610] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Bastien O. Burek
- Chemical Technology Group and Industrial Biotechnology GroupDECHEMA Forschungsinstitut Theodor-Heuss-Allee 25 60486 Frankfurt am Main Germany
- Institut für Technische ChemieLeibniz Universität Hannover Callinstraße 3 30167 Hannover Germany
| | - Sabrina R. de Boer
- Chemical Technology Group and Industrial Biotechnology GroupDECHEMA Forschungsinstitut Theodor-Heuss-Allee 25 60486 Frankfurt am Main Germany
| | - Florian Tieves
- Department of BiotechnologyDelft University of Technology Van der Maasweg 9 2629HZ Delft (The Netherlands
| | - Wuyuan Zhang
- Department of BiotechnologyDelft University of Technology Van der Maasweg 9 2629HZ Delft (The Netherlands
| | - Morten van Schie
- Department of BiotechnologyDelft University of Technology Van der Maasweg 9 2629HZ Delft (The Netherlands
| | - Sebastian Bormann
- Chemical Technology Group and Industrial Biotechnology GroupDECHEMA Forschungsinstitut Theodor-Heuss-Allee 25 60486 Frankfurt am Main Germany
| | - Miguel Alcalde
- Department of BiocatalysisInstitute of Catalysis, CSIC 28049 Madrid Spain
| | - Dirk Holtmann
- Chemical Technology Group and Industrial Biotechnology GroupDECHEMA Forschungsinstitut Theodor-Heuss-Allee 25 60486 Frankfurt am Main Germany
| | - Frank Hollmann
- Department of BiotechnologyDelft University of Technology Van der Maasweg 9 2629HZ Delft (The Netherlands
| | - Detlef W. Bahnemann
- Institut für Technische ChemieLeibniz Universität Hannover Callinstraße 3 30167 Hannover Germany
- Laboratory “Photoactive Nanocomposite Materials”Saint-Petersburg State University Ulyanovskaya str. 1, Peterhof Saint-Petersburg 198504 Russia
| | - Jonathan Z. Bloh
- Chemical Technology Group and Industrial Biotechnology GroupDECHEMA Forschungsinstitut Theodor-Heuss-Allee 25 60486 Frankfurt am Main Germany
| |
Collapse
|
97
|
Kelly SR, Shi X, Back S, Vallez L, Park SY, Siahrostami S, Zheng X, Nørskov JK. ZnO As an Active and Selective Catalyst for Electrochemical Water Oxidation to Hydrogen Peroxide. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04873] [Citation(s) in RCA: 109] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sara R. Kelly
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Xinjian Shi
- Department of Mechanical Engineering, Stanford University, Stanford, California 94305, United States
| | - Seoin Back
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Lauren Vallez
- Department of Mechanical Engineering, Stanford University, Stanford, California 94305, United States
| | - So Yeon Park
- Department of Mechanical Engineering, Stanford University, Stanford, California 94305, United States
- School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Samira Siahrostami
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Xiaolin Zheng
- Department of Mechanical Engineering, Stanford University, Stanford, California 94305, United States
| | - Jens K. Nørskov
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94024, United States
- Department of Physics, Technical University of Denmark, Building 311, DK-2800 Lyngby, Denmark
| |
Collapse
|
98
|
Affiliation(s)
- Jiafang Xie
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of Sciences YangQiao West Road 155# Fuzhou, Fujian 350002 China
| | - Yiyin Huang
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of Sciences YangQiao West Road 155# Fuzhou, Fujian 350002 China
| | - Maoxiang Wu
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of Sciences YangQiao West Road 155# Fuzhou, Fujian 350002 China
| | - Yaobing Wang
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of Sciences YangQiao West Road 155# Fuzhou, Fujian 350002 China
| |
Collapse
|
99
|
Henke AH, Saunders TP, Pedersen JA, Hamers RJ. Enhancing Electrochemical Efficiency of Hydroxyl Radical Formation on Diamond Electrodes by Functionalization with Hydrophobic Monolayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:2153-2163. [PMID: 30550713 DOI: 10.1021/acs.langmuir.8b04030] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Electrochemical formation of high-energy species such as hydroxyl radicals in aqueous media is inefficient because oxidation of H2O to form O2 is a more thermodynamically favorable reaction. Boron-doped diamond (BDD) is widely used as an electrode material for generating •OH radicals because it has a very large kinetic overpotential for O2 production, thus increasing electrochemical efficiency for •OH production. Yet, the underlying mechanisms of O2 and •OH production at diamond electrodes are not well understood. We demonstrate that boron-doped diamond surfaces functionalized with hydrophobic, polyfluorinated molecular ligands (PF-BDD) have significantly higher electrochemical efficiency for •OH production compared with hydrogen-terminated (H-BDD), oxidized (O-BDD), or poly(ethylene ether)-functionalized (E-BDD) boron-doped diamond samples. Our measurements show that •OH production is nearly independent of surface functionalization and pH (pH = 7.4 vs 9.2), indicating that •OH is produced by oxidation of H2O in an outer-sphere electron-transfer process. In contrast, the total electrochemical current, which primarily produces O2, differs strongly between samples with different surface functionalizations, indicating an inner-sphere electron-transfer process. X-ray photoelectron spectroscopy measurements show that although both H-BDD and PF-BDD electrodes are oxidized over time, PF-BDD showed longer stability (≈24 h of use) than H-BDD. This work demonstrates that increasing surface hydrophobicity using perfluorinated ligands selectively inhibits inner-sphere oxidation to O2 and therefore provides a pathway to increased efficiency for formation of •OH via an outer-sphere process. The use of hydrophobic electrodes may be a general approach to increasing selectivity toward outer-sphere electron-transfer processes in aqueous media.
Collapse
|
100
|
Krishnamurthy D, Sumaria V, Viswanathan V. Quantifying robustness of DFT predicted pathways and activity determining elementary steps for electrochemical reactions. J Chem Phys 2019; 150:041717. [DOI: 10.1063/1.5056167] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Affiliation(s)
- Dilip Krishnamurthy
- Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - Vaidish Sumaria
- Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - Venkatasubramanian Viswanathan
- Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
- Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| |
Collapse
|