Article
Chemistry, Applied
Yan Wei, Ruizhi Duan, Qiaolan Zhang, Youzhi Cao, Jinyuan Wang, Bing Wang, Wenrui Wan, Chunyan Liu, Jiazang Chen, Hong Gao, Huanwang Jing
Summary: The construction of new heterojunction materials is a promising approach for the photoelectrocatalytic conversion of CO2 into valuable chemicals. In this study, a series of TiO2/TiN heterojunctions were designed and fabricated, showing excellent performance in the reduction of CO2. The heterojunction with nitrogen instead of oxygen contained more active Ti3+ species and showed good light harvesting capability.
CHINESE JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Jinyuan Wang, Jiangping Ma, Qiaolan Zhang, Yun Chen, Lin Hong, Bing Wang, Jiazang Chen, Huanwang Jing
Summary: A series of heterojunction catalysts of polypyrrole/TiO2 were prepared by in-situ oxidizing polymerization of pyrrole onto TiO2 and subsequent pyrolysis treatment, with the optimal n-n heterojunction of PTCN-400 showing the highest selectivity for C2+ products under irradiation at -1.2 V. Tuning the band structure of PTCN-X heterojunctions by various pyrolytic temperatures enhances the selectivity of C2+ products through the formation of more defects and pyridine-N active sites.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Green & Sustainable Science & Technology
Kamil Urbanek, Kaja Spilarewicz, Jiaguo Yu, Wojciech Macyk
Summary: This work designed an advanced photocatalytic system composed of titanium dioxide (P25) and mSFO (Sn-doped magnetite with Fe-doped cassiterite) for gas phase CO2 reduction. A synthesis route of mSFO composite was proposed, and the obtained material was characterized by various techniques. The mSFO/P25 system showed photocatalytic reduction ability of CO2 to CO, which was confirmed by the use of labeled carbon dioxide. The surface photovoltage and electrochemical measurements supported the S-scheme mechanism.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Chemistry, Physical
Felipe Matamala-Troncoso, Cesar Saez-Navarrete, Jose Mejia-Lopez, Griselda Garcia, Jose Rebolledo-Oyarce, Cuong Ky Nguyen, Douglas R. MacFarlane, Mauricio Isaacs
Summary: The formation mechanism of Cu2O/TiO2 heterojunction was studied by electrochemically depositing Cu2O molecules on TiO2 nanoparticles. The experimental results, combined with theoretical calculations, revealed the initial steps of Cu2O molecule formation on TiO2 nanoparticles. It was found that the formation of a Cu2O nanowire-like network on the TiO2 nanoparticle matrix promotes charge transfer at the electrolyte/semiconductor interface, enhancing the electrode behavior.
SURFACES AND INTERFACES
(2023)
Article
Engineering, Environmental
Marcielli Karoline Rodrigues de Souza, Eduardo dos Santos Freitas Cardoso, Guilherme Fortunato, Marcos R. Lanza, Carlos Eduardo Nazario, Maria Valnice Boldrin Zanoni, Gilberto Maia, Juliano Carvalho Cardoso
Summary: Research demonstrates that utilizing photoelectrocatalysis technology in CO2 reduction process, assembling materials containing low amounts of metals can efficiently produce methanol and ethanol, with higher efficiency compared to other techniques.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Felipe Matamala-Troncoso, Cuong Ky Nguyen, Douglas R. MacFarlane, Mauricio Isaacs, Cesar Saez-Navarrete
Summary: A simple and cost-effective method for synthesizing a Cu2O/TiO2/FTO electrode was proposed, with characterization performed using various techniques to confirm its excellent photoelectrochemical behavior. The experiment demonstrated efficient conversion of nitrate to nitrite at lower overpotentials.
Article
Chemistry, Multidisciplinary
Kaja Spilarewicz, Kamil Urbanek, Anna Jakiminska, Wojciech Macyk
Summary: ZnFe2O4 (ZFO) composites with TiO2 (anatase, rutile) were synthesized and investigated for photocatalytic reduction of CO2 to CO. ZFO was obtained through precipitation from zinc and iron nitrates(V) precursors, followed by hydrothermal treatment, and its physicochemical properties were characterized. The results revealed that the ZFO/TiO2 systems formed type-I heterojunctions, which led to enhanced photoactivity of the composites. Furthermore, choosing anatase as the TiO2 polymorph favored higher yields of CO production.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Engineering, Environmental
Wenrui Wan, Qiaolan Zhang, Yan Wei, Youzhi Cao, Jiaxiu Hou, Chunyan Liu, Lin Hong, Hong Gao, Jiazang Chen, Huanwang Jing
Summary: Researchers designed and fabricated p-n heterojunction nanowires Si@WO3-x for photoelectrocatalytic reduction of CO2. Si@WO3NS heterojunction showed the highest apparent quantum efficiency (0.49% AQE) and selectivity of multicarbon products (C2+). This material simulated the structure of plants and can produce C2+ chemicals without the assistance of copper particles.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Mengting Lu, Dailing Jia, Huaiguo Xue, Jingqi Tian, Tengfei Jiang
Summary: CuO material with suitable energy level and a bandgap of 1.2-1.9 eV shows promise for photo-electrocatalytic reduction of CO2. Photocorrosion, however, affects its performance. This study presents a method for synthesizing 0D/1D CuFeO2/CuO nanowire heterojunction arrays with large specific surface using in-situ synthesis. These arrays exhibit excellent activity for photoelectrochemical reduction of CO2 to ethanol, achieving an optimal faradaic efficiency of 66.73% at -0.6 V (vs. Ag/AgCl). The enhanced charge transfer mechanism is proposed based on the measurement of energy band structures, which involves the transfer of photogenerated holes and electrons between CuFeO2 and CuO under the influence of the interfacial built-in electric field of the heterojunction, leading to the selective reduction of CO2 to ethanol.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Aiyun Meng, Bei Cheng, Haiyan Tan, Jiajie Fan, Chenliang Su, Jiaguo Yu
Summary: This study fabricated polydopamine-modified TiO2 hollow spheres and investigated their effect on the photocatalytic CO2 reduction activities. The results showed that the PDA wrapping significantly enhanced the photocatalytic activity and methane selectivity, leading to improved yields.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Materials Science, Multidisciplinary
Jia Li, Jianfeng Zheng, Xingmin Liu, Yatao Yang, Xiaojin Han, Zhanggen Huang
Summary: Photoelectrochemical reduction of CO2 with H2O into syngas (H2/CO) is achieved using a SnO/g-C3N4 p-n junction catalyst with matched energy band. This catalyst exhibits enhanced light absorption performance and photogenerated charge separation efficiency. The recombination rate of charge is effectively inhibited by the design of p-n heterojunction. The study provides a new approach for the design of high-performance photoelectric catalyst and PEC CO2 reduction to valuable carbon-based compounds.
Article
Chemistry, Physical
Huazhen Cao, Wanjun Zheng, Lingqin Zhang, Wenyu Feng, Huibin Zhang
Summary: This work presents a method for preparing Cu2ZnSnS4@TiO2 nanotubes (Cu2ZnSnS4/ TiO2NTs) composite electrode through pulse electrodeposition and high-temperature vulcanization. The composite electrode exhibits high catalytic conversion efficiency for CO2 reduction and stable performance. The influence of pulse parameters on the morphology and photoelectrochemical properties of the composite electrode is also investigated.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Suhail Mubarak, Duraisami Dhamodharan, Hun-Soo Byun, Deepak K. Pattanayak, S. B. Arya
Summary: This study developed an innovative and cost-effective silver-decorated anatase TiO2 nanoparticle, which showed excellent performance in terms of photocurrent density and reduction onset potential for CO2 reduction reaction. This nanoparticle has the potential to be used in photoelectrochemical reduction of CO2 to alleviate global warming and adverse climate change.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Physical
Xiaoyan Bao, Dawei Lu, Zining Wang, Hao Yin, Biao Zhu, Bin Chen, Meixiang Shi, Yang Zhang, Qianxin Xu, Yumei Qin, Xing -Can Shen, Kai Wu
Summary: Using solar energy to convert CO2 into value-added chemicals has great potential to address global energy shortage and climate change. This study reports a novel strategy of preparing a boron-doped g-C3N4/TiO2-x composite catalyst (BCT) that shows extended full-spectrum absorption, rapid charge separation, and outstanding CO2 photoreduction performance. The CO2 conversion rate of BCT is 7.5 and 9.2 times higher than that of pure TiO2 and g-C3N4, respectively. Mechanistic studies reveal that the synergistic effects of BCT lower the energy barrier for CO2 conversion by altering charge density distribution. This work provides a new integrated strategy for fabricating efficient catalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Qinjun Song, Baojia Shen, Jiaguo Yu, Shaowen Cao
Summary: The design of a 3D hierarchical TiO2/Ti3C2Tx heterojunction by in-situ formation of TiO2 on the surface of Ti3C2Tx nanosheets has led to significantly improved photocatalytic activity. The optimized sample exhibits a higher CH4 evolution rate, attributed to more efficient electron-hole separation and better light absorption in the hierarchical structure.
Article
Biochemical Research Methods
Josiel Jose da Silva, Bianca Ferreira da Silva, Maria Valnice Boldrin Zanoni, Nelson Ramos Stradiotto
Summary: This study used solid phase extraction, salting-out liquid-liquid extraction, and on-line solid phase extraction as sample preparation techniques for the analysis of antibiotics in vinasse. The results showed that vinasse-based fertigation is a source of antibiotic contamination in the environment.
JOURNAL OF CHROMATOGRAPHY A
(2022)
Article
Chemistry, Multidisciplinary
Juliana Ferreira de Brito, Marcos Antonio Santana Andrade Jr, Maria Valnice Boldrin Zanoni, Lucia Helena Mascaro
Summary: An all-solution approach was presented to fabricate nanocrystalline film of the ternary chalcopyrite for photoelectrochemical CO2 reduction. Despite interesting results, doping with In and Bi caused defects in the absorber layer, affecting the stability and performance of the photocathode in CO2 reduction. Meanwhile, the Mo/CuGaS2/CdS/TiO2 photocathode showed promising stability and reproducibility for CO2 reduction.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Environmental Sciences
Elisa Maria Christovam, Jefferson Honorio Franco, Guilherme Juliao Zocolo, Ana Marisa Fusco Almeida, Monica Yonashiro Marcelino, Danielle Palma de Oliveira, Maria Valnice Boldrin Zanoni
Summary: This study investigates the occurrence of Acid Black 210 (AB210) dye and its degradation products in the tannery industry, as well as the stability and toxicity of the dye. The results demonstrate that AB210 is unstable and easily degrades under chlorination, sunlight exposure, and ambient conditions, resulting in the formation of various harmful compounds. The cytotoxicity assay shows that stored AB210 samples exhibit toxicity to cells.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Electrochemistry
Fernanda da Costa Romeiro, Alysson Stefan Martins, Beatriz Costa e Silva, Maria Valnice Boldrin Zanoni, Marcelo Ornaghi Orlandi
Summary: This study investigates the photoelectrocatalytic water splitting using Sn3O4 and rGO-Sn3O4/SnO2 heterostructure nanocomposite materials. The nanocomposite showed superior performance compared to Sn3O4, attributed to its stronger absorption in the visible region, narrower band gap energy (1.8 eV), and higher photocurrent. The nanocomposite also demonstrated better photoexcited charge separation, leading to enhanced H-2 evolution. The UV/Vis light induced faster charge carrier generation on the nanocomposite's surface, resulting in increased H-2 production. This work provides a simple and low-cost method for obtaining Sn3O4-based materials for clean energy production.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Caio Cesar Goncalves Silva, Lilian Danielle de Moura Torquato, Barbara Camila de Araujo, Hernan Dario Rojas Mantilla, Maria Valnice Boldrin Zanoni, Saulo Santesso Garrido
Summary: This study describes an easy method to prepare a Chloroplast/PDA@WO3 biohybrid platform, where chloroplasts are deposited on WO3 substrate modified with polydopamine (PDA) film. The use of PDA as an immobilization matrix for chloroplasts and an electron mediator under LED irradiation enhances the photocurrents. The presence of intact chloroplasts amplifies the photocurrent compared to the bare substrate (WO3). The best electrode performance is achieved with high intensity LED irradiation at 395 nm, with the electrode exposed to 150 μg/mL of intact chloroplasts for 10 minutes.
BIOELECTROCHEMISTRY
(2022)
Article
Chemistry, Physical
Sirlon F. Blaskievicz, Ivo Freitas Teixeira, Lucia Helena Mascaro, Juliana Ferreira de Brito
Summary: In this study, a new photoelectrochemical nitrogen reduction reaction using carbon nitride, poly(heptazine imide) (PHI), and Nb2O5 nanotubes was developed for ammonia synthesis under mild conditions. The presence of PHI in the photocathode not only improved stability compared to bare Nb2O5, but also increased the ammonia generation rate by about 10-fold. The results suggest that this photocathode has the potential to be a promising alternative to the conventional Haber-Bosch process.
Article
Engineering, Environmental
Thais T. Guaraldo, Reza Vakili, Jannis Wenk, Davide Mattia
Summary: This study developed highly efficient self-supporting photocatalytic ZnO foams for the degradation of organic micropollutants. It achieved superior degradation performance compared to current technology under both recirculation and single-pass conditions, with low energy consumption and high quantum yield. These foams offer a practical approach for implementing photocatalytic processes in water treatment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Thais Caroline Almeida da Silva, Leonardo Marchiori, Bianca Oliveira Mattos, Sajjad Ullah, Hernane da Silva Barud, Rafael Romano Domeneguetti, Hernan Dario Rojas-Mantilla, Maria Valnice Boldrin Zanoni, Ubirajara Pereira Rodrigues-Filho, Elias Paiva Ferreira-Neto, Sidney Jose Lima Ribeiro
Summary: This study designs flexible, self-standing, porous, and recyclable BC@SiO2-TiO2 hybrid organic-inorganic aerogel membranes for effective in-flow photo-assisted removal of organic pollutants. The optimized BC@SiO2-TiO2 hybrid aerogel shows increased surface area and higher photocatalytic activity, outperforming most supported-titania materials reported earlier. These hybrid aerogels also demonstrate potential for water purification by successfully removing the model emergent contaminant sertraline drug from aqueous solution.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Instruments & Instrumentation
Sergio L. C. Ferreira, Ravena S. A. Azevedo, Jucelino B. da Silva Jr, Leonardo S. G. Teixeira, Ivanice. F. F. dos Santos, Walter N. L. dos Santos, Antonio F. S. Queiroz, Olivia M. C. de Oliveira, Lilian L. N. Guarieiro, Jeancarlo P. dos Anjos, Maria V. B. Zanoni, Ricardo B. da Silva, Carla Palma, Vanessa Morgado, Victor Cerda, Vanessa Hatje, Rodrigo M. A. Pedreira
Summary: This review discusses the sources, adverse effects, and quantification of emerging contaminants, including chemical elements used in medicine, microplastics in water bodies, and pharmaceuticals, illicit drugs, and their metabolites in wastewater and sewage sludge. It also addresses the pollution caused by these contaminants in urban areas. The main analytical methods for determining these contaminants are briefly reported.
APPLIED SPECTROSCOPY REVIEWS
(2023)
Article
Toxicology
Tais S. Viana, Diana Campos, Mariana Bartilotti, Fernanda G. Leite, Maria Valnice Zanoni, Daniel J. Dorta, Danielle P. Oliveira, Joao L. T. Pestana
Summary: Produced water (PW) generated by oil companies is a highly impacting waste that contains chemicals such as metals and organic and inorganic compounds. Conventional treatments have limited efficiency in removing PW toxicity, so alternative approaches must be developed and standardized. Treatment with magnetized vermiculite (VMT-mag) shows potential in reducing PW toxicity to aquatic biota.
JOURNAL OF APPLIED TOXICOLOGY
(2023)
Article
Electrochemistry
Lilian Danielle de Moura Torquato, Rosa Maria Matteucci, Paolo Stufano, Danilo Vona, Gianluca M. Farinola, Massimo Trotta, Maria Valnice Boldrin Zanoni, Matteo Grattieri
Summary: The metabolic versatility of purple non-sulphur bacteria makes them suitable for developing photobioelectrochemical systems in contaminated environments. The effects of 2,4 dinitrophenol, a common contaminant, on purple bacteria photobioelectrocatalysis were investigated. The results showed that the aromatic contaminant significantly affected the current generation, with enhanced photocurrent at low dinitrophenol concentrations, while higher concentrations resulted in a gradual decrease.
Editorial Material
Electrochemistry
Lilian Danielle de Moura Torquato, Rosa Maria Matteucci, Paolo Stufano, Danilo Vona, Gianluca M. Farinola, Massimo Trotta, Maria Valnice Boldrin Zanoni, Matteo Grattieri
Summary: Invited for this issue's Front Cover is an international collaborative team consisting of researchers from Universita degli Studi di Bari Aldo Moro (Italy), SAo Paulo State University (UNESP, Brasil), and Consiglio Nazionale delle Ricerche (Italy). The cover picture showcases purple bacterial cells that exhibit photo-induced electrons hitting or missing their target electrode depending on the concentration of dinitrophenol. The research article can be accessed at 10.1002/celc.202300013.
Editorial Material
Chemistry, Analytical
Maria Valnice Boldrin Zanoni
BRAZILIAN JOURNAL OF ANALYTICAL CHEMISTRY
(2023)
Article
Multidisciplinary Sciences
Alexandre de Oliveira Jorgetto, Maria Valnice Boldrin Zanoni, Marcelo Ornaghi Orlandi
Summary: Microporous Sn2+-containing SnO2 material with microrod morphology and a relatively large surface area has been synthesized. The material exhibits superior photoactivity due to the presence of Sn2+ states in its band structure. The internal crystalline structure analysis reveals a mesocrystalline structure at the nanoscale level.
SCIENTIFIC REPORTS
(2023)
Review
Engineering, Environmental
Zachary Warren, Thais Tasso Guaraldo, Alysson Stefan Martins, Jannis Wenk, Davide Mattia
Summary: Photocatalytic foams have the potential to address drawbacks hindering large-scale application of photocatalysis. This review provides a comprehensive overview of the state-of-the-art while addressing key issues such as the lack of classification nomenclature for foams and the use of kinetics as the defining feature of a photocatalyst. Standardization of experimental methods within the field is highlighted as necessary.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Electrochemistry
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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)