Article
Materials Science, Multidisciplinary
He Ren, Jing-Liang Yang, Wei-Min Yang, Han-Liang Zhong, Jia-Sheng Lin, Petar M. Radjenovic, Lan Sun, Hua Zhang, Juan Xu, Zhong-Qun Tian, Jian-Feng Li
Summary: This study focuses on the development of core-shell plasmonic photocatalysts based on CdS, aiming to improve energy conversion efficiency through hot electron injection and plasmonic coupling effects. The plasmonic nanocomposite photocatalyst showed a significant enhancement in catalytic performance, surpassing traditional CdS by more than 200 times. This work provides valuable insights into the mechanisms of SPR enhanced photocatalysis and offers an effective strategy for designing plasmonic photocatalysts.
ACS MATERIALS LETTERS
(2021)
Article
Chemistry, Physical
Zhaolong Wang, Hanxiang Chen, Jian Bao, Yanhua Song, Xiaojie She, Guoai Lv, Jiujun Deng, Huaming Li, Hui Xu
Summary: The development of a bifunctional electrode material with amorphous NiFeMo films grown on a conductive nickel foam substrate has significantly improved the overall water splitting performance, allowing for efficient hydrogen production to alleviate carbon emissions.
APPLIED SURFACE SCIENCE
(2023)
Article
Electrochemistry
Di Han, Gaohui Du, Yunting Wang, Lina Jia, Wenqi Zhao, Qingmei Su, Shukai Ding, Miao Zhang, Bingshe Xu
Summary: The introduction of heterojunction and defects into electrocatalysts can effectively modulate the electronic structure and improve the electrocatalytic kinetics. In this study, well-distributed Co9S8@MoS2 core-shell nanoparticles on porous carbon nanofibers were prepared, and their highly efficient hydrogen/oxygen evolution catalytic performance and long-term stability were demonstrated.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Wenmin Wang, Bing Li, Hsin-Ju Yang, Yuzhi Liu, Lakshmanan Gurusamy, Lakshmanan Karuppasamy, Jerry J. Wu
Summary: Hydrogen is a sustainable and clean fuel that has attracted attention as an alternative to fossil fuels for alleviating global warming. The novel Cu/ZnS/COF composite photocatalyst demonstrated efficient hydrogen production due to its unique core-shell structure and abundant active sites.
Review
Chemistry, Physical
Peirong Chen, Jianshan Ye, Hui Wang, Liuzhang Ouyang, Min Zhu
Summary: This review outlines the potential application of hydrogen energy and the performance of transition metal carbides and nitrides in electrocatalytic water splitting. The focus is on different modification methods and remaining challenges in the field.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Hyun Suk Lim, Minkyu Kim, Yikyeom Kim, Hyeon Seok Kim, Dohyung Kang, Minbeom Lee, Ayeong Jo, Jae W. Lee
Summary: This study investigates a core-shell structured Co3O4@LaCoO3 redox catalyst for hydrogen production through chemical looping water splitting. The catalyst improves H2O splitting efficiency by lowering the kinetic barrier and increasing the exothermicity, and enhances H-2 production activity by covering the Co3O4 nanoparticle surface. The core-shell structure prevents aggregation of Co3O4 nanoparticles and leads to superior and sustainable H-2 productivity compared to using only Co3O4 or LaCoO3.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Avigail Landman, Shabtai Hadash, Gennady E. Shter, Alon Ben-Azaria, Hen Dotan, Avner Rothschild, Gideon S. Grader
Summary: The study demonstrated the performance of electrospun nickel/nickel hydroxide porous electrodes in decoupled water splitting, showing advantages of high efficiency, high process efficiency, and high current density.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Engineering, Environmental
Swati J. Patil, Nilesh R. Chodankar, Seung-Kyu Hwang, Pragati A. Shinde, Ganji Seeta Rama Raju, Kugalur Shanmugam Ranjith, Yun Suk Huh, Young-Kyu Han
Summary: The study developed a bifunctional electrocatalyst with a core-shell structure, demonstrating excellent water splitting performance and stability in alkaline media.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Syed Shoaib Ahmad Shah, Atef El Jery, Tayyaba Najam, Muhammad Altaf Nazir, Liu Wei, Ejaz Hussain, Shahid Hussain, Faouzi Ben Rebah, Muhammad Sufyan Javed
Summary: This manuscript describes the synthesis of composite mixture by engineering the N-doped carbon layer on the surface of FeCo-doped MOF at the nanoscale level, resulting in excellent performance in alkaline water splitting. The addition of N-doped carbon contributes to larger and more robust carbon shells, leading to greater electrolyte-accessible surface and enriched mass diffusion paths, ultimately achieving higher performance and stable durability. The strategy of optimizing the active sites of FeCo-based electrocatalyst towards alkaline water splitting is demonstrated to be fruitful.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Nanoscience & Nanotechnology
Ting-Hsuan Lai, Chun-Wen Tsao, Mei-Jing Fang, Jhen-Yang Wu, Yu-Peng Chang, Yi-Hsuan Chiu, Ping-Yen Hsieh, Ming-Yu Kuo, Kao-Der Chang, Yung-Jung Hsu
Summary: In this study, Au@Cu2O core-shell and Au@Cu2Se yolk-shell nanocrystals were used as photocatalysts in photoelectrochemical water splitting and photocatalytic hydrogen production. The enhanced charge separation and additional charge carrier generation were achieved through the combination of the Au core and shells, as well as the localized surface plasmon resonance effect of Au. The improved interfacial charge transfer resulted in higher photocurrent and photocatalytic activity compared to the pure counterpart samples.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Ruijie Dai, Hua Zhang, Weijie Zhou, Yao Zhou, Zitao Ni, Ji Chen, Shuwen Zhao, Yifan Zhao, Fayin Yu, Anran Chen, Rongfei Wang, Tao Sun
Summary: In this study, nickel molybdenum nitride heterostructure nanowire arrays were successfully synthesized on nickel foam to achieve high-performance self-supporting electrodes. These electrodes exhibited low overpotentials in water splitting reactions, providing a new approach for the design of non-precious metal-based transition metal nitride catalysts.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Mingxuan Fu, Guyang Ning, Jiaxian Liu, Qi Zhang, Yuena Sun, Xinyu Fan, Haiyang Wang, Haijun Lu, Yufan Zhang, Huan Wang
Summary: The study focused on developing high-activity and durable dual-functional electrocatalysts for hydrogen and oxygen evolution reactions. By preparing core-shell structured nanocubes, the catalyst showed enhanced catalytic activity and stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Bin Tian, Yuqi Wu, Gongxuan Lu
Summary: A novel metal-free plasmonic catalyst BP@g-C3N4 for overall water splitting was reported, showing broad spectral absorption from UV-vis to NIR region. The significantly improved photocatalytic performance is attributed to BP plasmon resonance inducing effective carrier separation and transfer, crucial for solar energy utilization. The catalyst efficiently catalyzes overall water splitting under visible light and near-infrared irradiation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Mostafa Saad Sayed, Debananda Mohapatra, Marjorie Lara Baynosa, Jae-Jin Shim
Summary: This study prepared a tungsten trioxide/bismuth molybdate/cobalt phosphate hetero-photocatalyst, which exhibited high activity and significantly improved photocurrent efficiency. The appropriate bandgap alignment and structural-morphological synergy were found to enhance the photoelectrochemical properties effectively.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Analytical
Hong Chen, Jun Cai, Jinhua Yang, Zijie Zhong, Ming Ma, Wenfang Deng, Yueming Tan, Qingji Xie
Summary: The high catalytic activity of Cu2S@Co3S4 core-shell heterostructures towards H2O2 electroreduction has been demonstrated, with potential applications in immunosensing. The synergistic effect between Cu2S and Co3S4 contributes to the enhanced electrocatalytic activity, enabling the detection of alpha fetoprotein with a low detection limit.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Tae Woog Kang, Jun-Hyeong Lee, Jaewoo Lee, Jung Hyun Park, Jae-Hoon Shin, Jong-Min Ju, Hajin Lee, Sang Uck Lee, Jong-Ho Kim
Summary: A zwitterionic covalent organic framework (Zwitt-COF) with well-defined chemical and pore structures is prepared as a solid electrolyte, which can accelerate the dissociation and transport of Li ions. The Zwitt-COF solid electrolyte exhibits high ionic conductivity and electrochemical stability, leading to superior long-term cycle performance in all-solid-state Li-metal batteries.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Ashakiran Maibam, Sailaja Krishnamurty, Ravichandar Babarao
Summary: Density Functional Theory (DFT) investigation was conducted on Al-based catalysts to study their electronic properties and catalytic efficacy for nitrogen reduction at ambient condition. The Al-based catalysts were modulated to perform as highly efficient Ru-single atom catalytic centers. The coalescence of band-center, work function and electronic properties in metal atom catalysts, along with N-N bond activation, play a crucial role in achieving an efficient nitrogen reduction reaction. Detailed analysis was performed on factors such as electron localization function, Projected Density of States (PDOS), Bader charge analysis, and electronic analysis of intermediates to understand the mechanism of nitrogen reduction.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Chemical
Mangaleswari Santhosh Kumar, Ambedkar Balraj, Ramamurthy Nagarajan, Ravichandar Babarao
Summary: This study investigates the enhancement of high-frequency ultrasound assisted solvent regeneration/CO2 stripping process using hydrophobic micronized particles. It shows that the addition of 0.005 wt% micronized particles can significantly reduce the solvent's sensible energy requirements and increase the CO2 stripping rate.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Dun Chan Cha, Thangjam Ibomcha Singh, Ashakiran Maibam, Tae Hyeong Kim, Dong Hwan Nam, Ravichandar Babarao, Seunghyun Lee
Summary: Heteroatom-doped transition metal-oxides combined with metals of low hydrogen adsorption energy barrier can enhance the bifunctional activities and mitigate the low conductivity and high agglomeration of metal nanoparticles in a conductive carbon matrix. A 3D mesoporous heterostructure of boron-doped cobalt-oxide/cobalt-metal nanohybrids embedded in a nitrogen-doped carbon matrix is developed as a binder-free electrocatalyst for alkaline water-splitting. The electrocatalyst shows low overpotentials for both the oxygen evolution reaction and the hydrogen evolution reaction, along with excellent long-term durability.
Article
Chemistry, Multidisciplinary
Sunghoon Yoo, Goeun Youn, Hyunseung Lee, Jae-Sung Kwon, Youngbok Lee, Seunghyun Lee
Summary: Recently, the use of anisotropic plasmonic nanoparticles in nanomedicine has become increasingly popular. In this study, we successfully synthesized uniform ultra-small gold nanorods with high yield using hydroquinone as the reducing agent. By adjusting the volume of hydroquinone, we were able to control the growth rate of the gold nanorods. Additionally, by adjusting the volume of the gold precursor, we synthesized ultra-small gold nanorods with specific dimensions.
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Pallellappa Chithaiah, Ramesh Chandra Sahoo, Jun Ho Seok, Sang Uck Lee, H. S. S. Ramakrishna Matte, C. N. R. Rao
Summary: In this study, NbO2, an anode material with fast charging capabilities and stability, was synthesized using a simple strategy and its applications in Li-ion batteries (LIBs) and Na-ion batteries (SIBs) were investigated. NbO2 showed high specific capacity and remarkable stability in LIBs, as well as unique fast charging capability. In SIBs, NbO2 exhibited high specific capacity and good cycling performance. Density functional theory analysis revealed various features of NbO2 that contribute to the observed battery performances.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Jun-Hyeong Lee, Hajin Lee, Jaewoo Lee, Tae Woog Kang, Jung Hyun Park, Jae-Hoon Shin, Hyunji Lee, Dibyananda Majhi, Sang Uck Lee, Jong-Ho Kim
Summary: In this study, a diethylene glycol-modified pyridinium covalent organic framework (DEG-PMCOF) was developed as a multicomponent solid electrolyte for all-solid-state Li metal batteries. DEG-PMCOF exhibited high ion conductivity and effectively suppressed the formation of Li dendrites and dead Li, leading to a high specific capacity and outstanding Coulombic efficiency during long-term cycling.
Article
Chemistry, Analytical
Yixuan Wu, Qian Yu, Younju Joung, Chang Su Jeon, Seunghyun Lee, Sung Hyun Pyun, Sang-Woo Joo, Lingxin Chen, Jaebum Choo
Summary: This study reports the development of a reproducible and highly sensitive surface-enhanced Raman scattering (SERS) substrate using a butanol-induced self-assembly of gold nanoparticles (AuNPs) and its application as a rapid diagnostic platform for SARS-CoV-2. The substrate showed strong electromagnetic enhancement of the Raman signals, enabling the detection of SARS-CoV-2 with a very low limit of detection (LoD) of 3.1 x 10(-15) M. This method provides sufficient sensitivity for SARS-CoV-2 screening assay and reduces the diagnostic time significantly. The results suggest the potential of this approach for developing rapid diagnostic platforms for other biomolecules and infectious diseases.
ANALYTICAL CHEMISTRY
(2023)
Article
Energy & Fuels
Krishna Kumar Nagarajan, Ambedkar Balraj, Ramamurthy Nagarajan, Ravichandar Babarao
Summary: This experimental study investigated the stripping of CO2 from 30% MEA solvent using tank-type sonication at low temperatures. The results showed that sonication had a significant impact on the stripping rate of CO2, with higher rates observed at lower temperature setpoints.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Chemistry, Physical
Asma H. H. Maneri, Shruti Suhas Varode, Ashakiran Maibam, Priyatosh Ranjan, Sailaja Krishnamurty, Krati Joshi
Summary: This study investigates the electronic/physicochemical properties and interactions within gold and silver quantum dot-capped single lipid molecules. It is found that gold quantum dots interact more strongly with lipids at the phosphate site, while the interaction energy is lower at the choline site. Molecular dynamics simulations demonstrate that the interaction between gold quantum dots and lipids at the phosphate site is stable.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Indrajeet S. Nawghare, Ambarish Kumar Singh, Ashakiran Maibam, Shivdeep Suresh Deshmukh, Sailaja Krishnamurty, Kothandam Krishnamoorthy, Jayaraj Nithyanandhan
Summary: In this study, a series of squaraine dyes (ISQ) with halogen functionalization were designed and synthesized, and their electronic, photo-excited, and DSSC device properties were characterized. It was found that despite the presence of heavy atoms such as iodine, bromine, and chlorine, the singlet excited state lifetime and fluorescence quantum yield of the ISQ dyes were comparable to or slightly higher than those of the non-substituted ISQ-H dye. Density functional theory (DFT) calculations revealed the presence of an s-hole in the halogen-functionalized ISQ dyes, which facilitated dye regeneration through halogen bonding. DSSC devices fabricated with different iodolyte electrolytes showed different photovoltaic performances for the ISQ dyes.
MATERIALS ADVANCES
(2023)
Article
Chemistry, Physical
Ramesh Chandra Sahoo, Sreejesh Moolayadukkam, Jun Ho Seok, Sang Uck Lee, H. S. S. Ramakrishna Matte
Summary: Layered double-hydroxides (LDHs) have been extensively researched for their advantages in lithium-ion batteries (LIBs), but their poor electronic conductivity, volume change, and ion diffusion limitations hinder their performance. To overcome these challenges, expanded graphite (EG) was used as a conductive additive to anchor Ni2Co-LDH on its surface. The resulting Ni2Co-LDH/EG composites exhibited significantly enhanced charge-storage capacities and battery-like behavior. Density functional theory (DFT) calculations suggest that the stable Li-ion intercalation in Ni2Co-LDH/EG is attributed to the interaction energy and overlap of lithium and carbon.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Inorganic & Nuclear
Shafeeq Sarfudeen, Vadakke Purakkal Sruthi, Ashakiran Maibam, Premchand Panda, Pampa Jhariat, Sellappan Senthilkumar, Ravichandar Babarao, Tamas Panda
Summary: A novel zeolitic tetrazolate framework, ZTF-8, has been synthesized using a solvent-free heat-assisted mechanochemical method. ZTF-8 exhibits exceptional stability and uncoordinated active sites, enabling efficient electrocatalytic oxidation of dopamine at neutral pH. Without any modification, ZTF-8 can be directly used for electrochemical detection of dopamine with high sensitivity.
INORGANIC CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Manjinder Singh, Dun Chan Cha, Thangjam Ibomcha Singh, Ashakiran Maibam, Dasu Ram Paudel, Dong Hwan Nam, Tae Hyeong Kim, Sunghoon Yoo, Seunghyun Lee
Summary: Introducing complementary active materials in tandem as heterostructures can greatly improve the physicochemical properties. The use of amorphous materials with crystalline moieties as electrocatalysts has seen rapid growth. The combination of amorphous-crystalline-based materials allows for excellent bifunctional activity in hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). While crystalline materials have better properties, their limited activity due to surface confinement can be overcome by integrating amorphous materials. This review aims to provide comprehensive details on the fabrication, composition, and physicochemical properties of amorphous-crystalline heterostructures for water-splitting applications.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Nanoscience & Nanotechnology
Pallellappa Chithaiah, Ramesh Chandra Sahoo, Jun Ho Seok, Sang Uck Lee, H. S. S. Ramakrishna Matte, C. N. R. Rao
Summary: This study presents a simple synthetic strategy to obtain NbO2 as an anode material for LIB and SIB. NbO2 demonstrated high specific capacity, remarkable stability, and fast charging capability in both LIB and SIB. The excellent battery performances of NbO2 are attributed to various factors such as bulk and surface charging processes, lower ion diffusion energy barriers, and superior electronic conductivity.
ACS APPLIED MATERIALS & INTERFACES
(2023)
