4.6 Article

Stable TiO2 nanotube arrays with high UV photoconversion efficiency

期刊

ELECTROCHIMICA ACTA
卷 55, 期 7, 页码 2246-2251

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2009.11.060

关键词

Nanotube; TiO2; Water photo-electrolysis; Photoelectrocle; OER

向作者/读者索取更多资源

This work is intended to define an optimal methodology for preparing highly ordered TiO2 nanotube arrays by a 60-V anodization in a glycol ethylene solution. In order to obtain a mechanically stable structure with a high UV photoconversion efficiency, it is necessary to carefully control the growth mechanism through the anodization process. For this reason, the nanotube arrays have to be formed upon a compact titanium dioxide layer with well-defined thickness. Besides, both the fluoride concentration and anodization time are strictly correlated, because elevated concentrations and/or a long anodization time produce unstable structure with low photoconversion efficiency. The best result in the terms of reproducibility has been obtained previously for a three-minute galvanostatic oxide growth on the pickled titanium sheet, and anodic growth in ethylene glycol solution containing 1 wt.% H2O and 0.20 wt.% NH4F for a period lower than 4.5 h. The UV photoconversion efficiency was measured and a maximum value of 28.3% has been obtained, which is the highest result in the literature. (C) 2009 Elsevier Ltd. All rights reserved.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

Article Nanoscience & Nanotechnology

A 3D-Printed Multi-Chamber Device Allows Culturing Cells On Buckypapers Coated With PAMAM Dendrimer And Obtain Innovative Materials For Biomedical Applications

Alessandro Paolini, Giulia Battafarano, Valentina D'Oria, Francesco Mura, Simona Sennato, Valentina Mussi, Roberta Risoluti, Stefano Materazzi, Andrea Del Fattore, Andrea Masotti

INTERNATIONAL JOURNAL OF NANOMEDICINE (2019)

Article Chemistry, Physical

Hard carbon for sodium batteries: Wood precursors and activation with first group hydroxide

A. Pozio, A. Aurora, P. P. Prosini

JOURNAL OF POWER SOURCES (2020)

Article Materials Science, Multidisciplinary

Effect of cobalt deposition on Ni anodes for alkaline membrane water electrolyser

A. Pozio, N. Lisi, L. Della Seta, S. Dolci, C. D'Angelo

MATERIALS CHEMISTRY AND PHYSICS (2020)

Article Nuclear Science & Technology

Membrane gas-liquid contactor for tritium extraction from Pb-Li alloys

Silvano Tosti, Alfonso Pozio, Luca Farina, Marco Incelli, Alessia Santucci, David Alique

FUSION ENGINEERING AND DESIGN (2020)

Article Biochemistry & Molecular Biology

Proton Dynamics in Palladium-Silver: An Inelastic Neutron Scattering Investigation

Daniele Colognesi, Franz Demmel, Alessandra Filabozzi, Antonino Pietropaolo, Alfonso Pozio, Giovanni Romanelli, Alessia Santucci, Silvano Tosti

MOLECULES (2020)

Article Nuclear Science & Technology

Study of a stainless steel porous membrane for recovering tritium from Pb-Li alloys: Assessment of mass transfer coefficient

Silvano Tosti, Luca Farina, Alfonso Pozio, Alessia Santucci, David Alique

Summary: The study shows that hydrogen extraction consists of various steps, mainly controlled by recombination of hydrogen atoms and their desorption from the gas-liquid interface. The use of MGLCs for effective extraction of hydrogen isotopes from liquid breeders is very promising.

FUSION ENGINEERING AND DESIGN (2021)

Article Energy & Fuels

Electrophoretic deposition of cobalt oxide anodes for alkaline membrane water electrolyzer

Alfonso Pozio, Francesco Bozza, Nicola Lisi, Francesco Mura

Summary: Nanostructured cobalt oxide anodes for alkaline membrane electrolysis cell were fabricated using electrophoretic deposition on AISI-316 sintered metal fiber substrate, showing improved catalytic activity for oxygen evolution reaction. The EPD method was found to be effective in enhancing the performance of steel anodes in alkaline membrane electrolyzers when compared to other materials such as platinum and cobalt.

INTERNATIONAL JOURNAL OF ENERGY RESEARCH (2022)

Article Energy & Fuels

Exploiting Olive Mill Wastewater via Thermal Conversion of the Organic Matter into Gaseous Biofuel-A Case Study

Alfredo Crialesi, Barbara Mazzarotta, Marco Santalucia, Fabrizio Di Caprio, Alfonso Pozio, Alessia Santucci, Luca Farina

Summary: This study proposes a process of converting organic compounds in olive mill wastewater (OMW) to valuable gaseous biofuel. Through membrane filtration and chemical reactions, a usable biofuel is obtained while greatly reducing the pollution load of wastewater.

ENERGIES (2022)

Article Materials Science, Multidisciplinary

Titanium Electrical Resistivity in Hydrogen and Deuterium

A. Pozio, A. Aurora, L. Della Seta, A. Santucci, S. Tosti

Summary: The electrical resistivity of pure titanium was measured using the electrochemical impedance spectroscopy technique under hydrogen and deuterium atmospheres at 100 kPa. The resistivity showed a linear trend with temperature for both hydrogen and deuterium, but with different magnitudes. The results were discussed in terms of the adsorption of hydrogen and deuterium onto the metal, and the difference in behavior between the two gases was attributed to interactions with titanium oxides present on the sample surface. Metal embrittlement was observed only in the presence of hydrogen.

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2022)

Article Chemistry, Multidisciplinary

Hard Carbons for Use as Electrodes in Li-S and Li-ion Batteries

Alfonso Pozio, Mariasole Di Carli, Annalisa Aurora, Mauro Falconieri, Livia Della Seta, Pier Paolo Prosini

Summary: Activated hard carbons from waste biomasses were used as active materials for battery electrodes, showing good performance in lithium-sulfur and lithium-ion batteries.

NANOMATERIALS (2022)

Article Chemistry, Physical

Cobalt Oxide Synthesis via Flame Spray Pyrolysis as Anode Electrocatalyst for Alkaline Membrane Water Electrolyzer

Alfonso Pozio, Francesco Bozza, Nicola Lisi, Rosa Chierchia, Francesca Migliorini, Roberto Donde, Silvana De Iuliis

Summary: Nanostructured cobalt oxide powders were synthesized by flame spray synthesis and used as electro catalysts for the oxygen evolution reaction in an alkaline membrane electrolysis cell. The prepared cobalt oxide powders were deposited on an AISI-316 sintered metal fiber to produce an anode using the electrophoretic deposition method. Characterization of the powders and composite electrode demonstrated an increase in catalytic activity compared to commercial materials commonly used in alkaline electrolysis, suggesting a promising approach for producing anodic catalysts for alkaline membrane electrolyzers.

MATERIALS (2022)

Article Archaeology

Carbonatogenic bacteria on the ?Motya Charioteer? sculpture

Lorenzo Nigro, Francesco Mura, Maria Pamela Toti, Angela Cirigliano, Teresa Rinaldi

Summary: This passage describes the discovery of the 'Motya Charioteer' marble statue and its microbial deterioration. The study found that bacterial strains capable of dissolving marble and causing degradation were mainly present in the damaged areas of the statue. Among them, a common component of human skin flora, Staphylococcus haemolyticus, demonstrated fast calcium carbonate dissolution, which was previously unreported for this species. Additionally, two bacterial strains suitable for bioconsolidation intervention on the sculpture were identified.

JOURNAL OF CULTURAL HERITAGE (2022)

Article Biochemistry & Molecular Biology

Synthesis and Characterization of a Composite Anion Exchange Membrane for Water Electrolyzers (AEMWE)

Somayyeh Rakhshani, Rodolfo Araneo, Andrea Pucci, Antonio Rinaldi, Chiara Giuliani, Alfonso Pozio

Summary: Anion exchange membranes (AEM) are gaining attention as a low-cost solution for water electrolysis to produce hydrogen, providing a sustainable alternative to fossil fuels. This article presents the development of a composite AEM by activating a commercial support structure (Celgard (R) 3401) with a commercially available functional group (Fumion (R) FAA-3) through a phase-inversion process. The results demonstrate the effectiveness of the phase-inversion procedure through FTIR and SEM analysis. The performance test of the membrane showed promising results, surpassing a commonly used commercial membrane in alkaline electrolysis (Fumasep), and a testing procedure for membrane performance evaluation during electrolysis was developed.

MEMBRANES (2023)

Article Polymer Science

Polyketone-Based Anion-Exchange Membranes for Alkaline Water Electrolysis

Ottavia Racchi, Rebecca Baldassari, Esteban Araya-Hermosilla, Virgilio Mattoli, Pierpaolo Minei, Alfonso Pozio, Andrea Pucci

Summary: In this study, efficient anion-exchange membranes (AEMs) were prepared by functionalizing an aliphatic polyketone with 1-(3-aminopropyl)imidazole through the Paal-Knorr reaction. The derived membranes showed good thermal stability, mechanical properties, and comparable ionic conductivity to a commercially available AEM. Future efforts will focus on increasing the robustness of these membranes to meet the requirements for electrolytic cell applications.

POLYMERS (2023)

Article Electrochemistry

Nanocomposites of Nickel Oxide and Zirconia for the Preparation of Photocathodes with Improved Performance in p-Type Dye-Sensitized Solar Cells

Matteo Bonomo, Paolo Mariani, Francesco Mura, Aldo Di Carlo, Danilo Dini

JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2019)

Article Electrochemistry

Recent advances in Bio-mass by electrochemically strategies generated hydrogen gas production: Environmentally sustainable technologies innovation

Abdul Qayoom Mugheri, Shaista Khan, Ali Asghar Sangah, Aijaz Ahmed Bhutto, Muhammad Younis Laghari, Nadeem Ahmed Mugheri, Asif Ali Jamali, Arsalan Ahmed Mugheri, Nagji Sodho, Abdul Waheed Mastoi, Aftab Kandhro

Summary: Green hydrogen has the potential to transition to a pollution-free energy infrastructure. This study proposes a solution to produce hydrogen during the photoelectrochemical process, offering greater stability and control over chemical reactions. Techno-economic assessments show the efficiency and economic feasibility of co-producing value-added chemicals to enhance green hydrogen production.

ELECTROCHIMICA ACTA (2024)

Article Electrochemistry

ACGNet: An interpretable attention crystal graph neural network for accurate oxidation potential prediction

Danpeng Cheng, Wuxin Sha, Qigao Han, Shun Tang, Jun Zhong, Jinqiao Du, Jie Tian, Yuan-Cheng Cao

Summary: LiNixCoyMn1-x-yO2 (NCM) is a critical cathode material for lithium-ion batteries in electric vehicles. The aging of cathode/electrolyte interfaces leads to capacity degradation and long-term cycle instability. A novel neural network model called ACGNet is developed to predict electrochemical stability windows of crystals, allowing for high-throughput screening of coating materials. LiPO3 is identified as a promising coating material with high oxidation voltage and low cost, which significantly improves the cycle stability of NCM batteries. This study demonstrates the accuracy and potential of machine learning in battery materials.

ELECTROCHIMICA ACTA (2024)

Article Electrochemistry

Enhanced electrochemical performance of CuO/NiO/rGO for oxygen evolution reaction

P. Mohana, R. Yuvakkumar, G. Ravi, S. Arunmetha

Summary: This study successfully fabricates a non-noble CuO/NiO/rGO nanocomposite and investigates its electrocatalytic performance for oxygen evolution reaction in alkaline environment. The experimental results demonstrate that the electrocatalyst exhibits high activity and good stability, offering a new synthetic approach for sustainable energy production.

ELECTROCHIMICA ACTA (2024)

Article Electrochemistry

Carbon nanofibers implanted porous catalytic metal oxide design as efficient bifunctional electrode host material for lithium-sulfur battery

Qiong Qu, Jing Guo, Hongyu Wang, Kai Zhang, Jingde Li

Summary: In this study, a bifunctional electrode host design consisting of carbon nanofibers implanted ordered porous Co-decorated Al2O3 supported on carbon nanotube film (CNTF) was proposed to address the shuttling effect of lithium polysulfides (LiPSs) and dendrite formation of metal lithium anode in lithium-sulfur (Li-S) batteries. The electrode exhibited excellent conductivity, efficient confinement of LiPSs, and catalytic conversion performance, resulting in high initial capacity and good capacity retention during cycling. As an anode, the electrode showed excellent Li+ diffusion performance and uniform lithium growth behavior, achieving a dendrite-free lithium electrode. The flexible pack cell assembled from these electrodes delivered a specific capacity of 972 mAh g(-1) with good capacity retention.

ELECTROCHIMICA ACTA (2024)

Article Electrochemistry

Spray coating of carbon nanoparticles as an effective and scalable method to enhance the performance of stainless steel anode in microbial electrochemical systems

Hong Zhang, Jin-Peng Yu, Chen Chen, Cheng-Yong Shu, Guang-Yu Xu, Jie Ren, Kai Cui, Wen-Fang Cai, Yun-Hai Wang, Kun Guo

Summary: Spray coating of acetylene black nanoparticles onto stainless steel mesh can enhance its biofilm formation ability and current density, making it a promising electrode material for microbial electrochemical systems. The spray coating method is simple, cost-effective, and suitable for large-size stainless steel electrodes.

ELECTROCHIMICA ACTA (2024)

Article Electrochemistry

Electrochemical properties of Li-rich ternary cathode material Li1.20Mn0.44Ni0.32Co0.04O2 and its oxygen-deficient phase

Binpeng Hou, Jingjin Chen, Li-Hong Zhang, Xiaowen Shi, Zizhong Zhu

Summary: The electrochemical performance of Li1.20Mn0.44Ni0.32Co0.04O2 and its oxygen-deficient phase Li1.20Mn0.44Ni0.32Co0.04O1.83 was studied through first-principles calculations. The results show that the oxygen-deficient phase has a higher theoretical capacity but lower voltage platform and higher chemical activity compared to the pristine phase.

ELECTROCHIMICA ACTA (2024)

Article Electrochemistry

Post-mortem analysis of the Li-ion battery with charge/discharge deterioration in high- and low-temperature environments

Yating Du, Sayoko Shironita, Daisuke Asakura, Eiji Hosono, Yoshitsugu Sone, Yugo Miseki, Eiichi Kobayashi, Minoru Umeda

Summary: This study investigates the effect of high- and low-temperature environments on the charge-discharge performance of a Li-ion battery. The deterioration mechanisms of the battery at different temperatures are analyzed through various characterization techniques. The results indicate that the battery performance deteriorates more significantly at a low-temperature environment of 5 degrees C compared to higher temperatures. The understanding of the deterioration mechanisms can contribute to the development of safer battery usage methods.

ELECTROCHIMICA ACTA (2024)

Article Electrochemistry

A Co3O4-x/Co nanocomposite with synergistically enhanced electrochemical activity for reduction of nitrite to ammonia

Si-Si Shi, Zhi-Xiang Yuan, Fei Zhang, Ping Chen

Summary: In this study, a new nano-electrocatalyst was prepared, which exhibited superior electrocatalytic activity for the reduction of NO2- to ammonia in a neutral electrolyte, potentially due to the synergistic enhancement between Co3O4-x and Co.

ELECTROCHIMICA ACTA (2024)

Article Electrochemistry

Facile fabrication of NaOH nanorods on pencil graphite electrode for simultaneous electrochemical detection of natural antioxidants by deep eutectic solvent

Berna Dalkiran, Havva Bekirog

Summary: This study reports the use of deep eutectic solvents (DES) based on ethylene glycol and urea as low-cost and green electrolytes for enhancing electrochemical detection of natural antioxidants. The study successfully developed a disposable and effective electrochemical sensing platform for simultaneous determination of ascorbic acid (AA) and gallic acid (GA) using NaOH nanorods on a pencil graphite electrode. The proposed electrode showed improved analytical performance, with higher peak currents and shifted oxidation potentials in DES compared to BR buffer medium.

ELECTROCHIMICA ACTA (2024)

Article Electrochemistry

A three-dimensional fibrous tungsten-oxide/carbon composite derived from natural cellulose substance as an anodic material for lithium-ion batteries

Sijun Ren, Jianguo Huang

Summary: In this study, a novel bio-inspired nanofibrous WO3/carbon composite was synthesized using a facile hydrothermal method. The three-dimensional network structure of the composite alleviated the volume expansion of WO3 nanorods and enhanced the charge-transport kinetics. The optimized composite exhibited superior lithium storage properties.

ELECTROCHIMICA ACTA (2024)

Article Electrochemistry

Stabilizing the dissolution kinetics by interstitial Zn cations in CoMoO4 for oxygen evolution reaction at high potential

Zhilong Zheng, Yu Chen, Hongxia Yin, Hengbo Xiao, Xiangji Zhou, Zhiwen Li, Ximin Li, Jin Chen, Songliu Yuan, Junjie Guo, Haibin Yu, Zhen Zhang, Lihua Qian

Summary: This study found that interstitial Zn cations in CoMoO4 can modulate the dissolution kinetics of Mo cations and improve the OER performance. The interstitial Zn cations can prevent the dissolution of Co cations at high potential, enhancing the durability of the catalyst.

ELECTROCHIMICA ACTA (2024)

Article Electrochemistry

Molecular insights on optimizing nanoporous carbon-based supercapacitors with various electrolytes

Xiaobo Lin, Shern R. Tee, Debra J. Searles, Peter T. Cummings

Summary: Molecular dynamics simulations using the constant potential method were used to investigate the charging dynamics and charge storage of supercapacitors. The simulations revealed that the water-in-salt electrolyte exhibited the highest charge storage and significantly higher capacitance on the negative electrode. The varying contributions of different electrode regions to supercapacitor performance were also demonstrated.

ELECTROCHIMICA ACTA (2024)

Article Electrochemistry

Interaction between bilirubin oxidase and Au nanoparticles distributed over dimpled titanium foil towards oxygen reduction reaction

Wiktoria Lipinska, Vita Saska, Katarzyna Siuzdak, Jakub Karczewski, Karol Zaleski, Emerson Coy, Anne de Poulpiquet, Ievgen Mazurenko, Elisabeth Lojou

Summary: The spatial distribution of enzymes on electrodes is important for bioelectrocatalysis. In this study, controlled spatial distribution of gold nanoparticles on Ti nanodimples was achieved. The efficiency of enzymatic O2 reduction was found to be influenced by the size of the gold nanoparticles and their colocalization with TiO2. The highest stability of enzymatic current was observed with the largest gold nanoparticles.

ELECTROCHIMICA ACTA (2024)

Article Electrochemistry

Electrochemical supercapacitor and water splitting electrocatalysis applications of self-grown amorphous Ni(OH)2 nanosponge-balls

Tariq M. Al-Hejri, Zeenat A. Shaikh, Ahmed H. Al-Naggar, Siddheshwar D. Raut, Tabassum Siddiqui, Hamdan M. Danamah, Vijaykumar V. Jadhav, Abdullah M. Al-Enizi, Rajaram S. Mane

Summary: This study explores a promising self-growth approach for the synthesis of nickel hydroxide (Ni(OH)2) nanosponge-balls on the surface of a nickel-foam (NiF) electrode. The modified NiF electrode, named Ni(OH)2@NiF, shows distinctive nanosponge-ball morphology and demonstrates excellent energy storage capability and electrocatalytic performance in both hydrogen and oxygen evolution reactions.

ELECTROCHIMICA ACTA (2024)

Article Electrochemistry

Versatile mixed ionic-electronic conducting binders for high-power, high-energy batteries

Rafael Del Olmo, Gregorio Guzman-Gonzalez, Oihane Sanz, Maria Forsyth, Nerea Casado

Summary: The use of Lithium-Ion Batteries (LIBs) is becoming increasingly extensive, and it is important to optimize the devices to achieve their maximum practical specific capacity. In this study, mixed ionic-electronic conducting (MIEC) binders based on PEDOT:PSS and PEDOT: PDADMA-TFSI were developed for Li-ion cathodes, and their performance was compared with conventional formulations. The influence of electrode formulations, including the addition of conducting carbon and an Organic Ionic Plastic Cristal (OIPC), was also analyzed. The proposed binders showed improved performance compared to conventional formulations with different electrolyte types and active materials.

ELECTROCHIMICA ACTA (2024)