Article
Engineering, Environmental
Weifeng Liu, Zihao Zhou, Zhe Li, Yan Yang, Jiao Zhao, Yimin Zhu, Wenjing Miao
Summary: The study introduces a cost-effective non-precious metal catalyst CoP@N-C for oxygen reduction reaction in microbial fuel cells, demonstrating enhanced catalytic activity and power density, compared to traditional activated carbon control.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Ruyi Zou, Baoli Wang, Lin Zhu, Lijun Yan, Fan Shi, Yunxiu Sun, Bo Shao, Siyue Zhang, Wei Sun
Summary: Carbon based composites derived from various biomasses, such as Co3O4@EPC, have shown excellent supercapacitive performances including high specific capacitance, energy density, and cyclic stability, making them potential electrode materials for high-performance supercapacitors.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Materials Science, Biomaterials
Velu Duraisamy, Velayutham Sudha, Venkataraman Dharuman, Sakkarapalayam Murugesan Senthil Kumar
Summary: In this study, hollow mesoporous carbon sphere-based materials of cobalt oxide and heteroatom-doped materials were investigated for sensor applications. A highly homogeneous Co3O4-embedded N-doped hollow carbon sphere (Co3O4@NHCS) was successfully synthesized by a one-step polymerization method using dopamine hydrochloride and cobalt phthalocyanine precursors. The resulting Co3O4@NHCS materials exhibited excellent electrochemical performance for the sensing of acetaminophen, with a linear range, sensitivity, and limit of detection that are suitable for practical applications.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2023)
Article
Chemistry, Physical
Keshavananda C. P. Prabhu, Shambhulinga Aralekallu, Veeresh A. Sajjan, Manjunatha Palanna, Sharath Kumar, Lokesh Koodlur Sannegowda
Summary: Efficient water splitting reactions are crucial for sustainable hydrogen production. In this study, a highly active non-precious electrocatalyst using a cobalt phthalocyanine-embedded iron ore particle hybrid composite was developed for the hydrogen evolution reaction (HER). The composite material exhibited remarkable HER activity, comparable to precious metal and metal oxide electrocatalysts.
SUSTAINABLE ENERGY & FUELS
(2021)
Article
Environmental Sciences
Khurram Tahir, Waheed Miran, Jiseon Jang, Nagesh Maile, Asif Shahzad, Mokrema Moztahida, Ahsan Adul Ghani, Bolam Kim, Dae Sung Lee
Summary: This study synthesized a binder-free manganese cobalt oxide anode with a large electrochemically active and rough surface area, leading to improved microbial fuel cell performance. The superior bio-electrochemical activity, reduced ion transfer resistance, and excellent capacitance of the synthesized anode resulted in enhanced power density. The modified anode also accelerated the enrichment of electro-active microbes, as shown by high-throughput biofilm analysis.
Article
Engineering, Environmental
Yini Chen, Fan Zhao, Yu Pu, Xiangyu Lin, Haoran Yin, Xinhua Tang
Summary: A porous carbon monolith derived from wax gourd (WGCM) was prepared by freeze-drying and carbonization, and then coated with nano-Fe3O4 to obtain the nano-Fe3O4/WGCM anode. The WGCM anode increased the maximum power density of microbial fuel cells (MFCs), and the nano-Fe3O4/WGCM anode further promoted it. The results demonstrated that the preparation of carbon monolith coated with nano-Fe3O4 was a promising method for anode enhancement in MFCs.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Inorganic & Nuclear
Zhang Qiao-Li, Wang Ya-Ping, Sun Wan-Jie, Yi Qing-Feng
Summary: In this study, Co/C-N, Fe/C-N, and Fe-Co/C-N nanocomposites were synthesized using the self-template method and high-temperature pyrolysis. The catalysts showed excellent oxygen reduction reaction (ORR) electroactivity, especially Co-Pt/C-N which exhibited comparable activity to Pt/C in an acidic solution. The remarkable electroactivity of these catalysts can be attributed to the three-dimensional structure formed by carbon nanosheets, uniform distribution of metal nanoparticles, and abundant pyridine N.
CHINESE JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Engineering, Electrical & Electronic
Ugursoy Olgun, Emine Erdogan, Mustafa Gulfen, Salih Zeki Yildiz
Summary: In this study, Au-Pc and Au-AoPc dye materials were synthesized and characterized using various instruments. The optical band gap energies of Au-Pc and Au-AoPc were calculated using the Tauc method. The DMAE-stabilized AuNPs, Au-Pc, and soluble Au-AoPc dyes with low band gap energy have potential applications in electronics, imaging, sensors, and solar cells.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Zongyang Shi, Huiqin Luo, Zhiqin Li, Yu Xiang, Yan Wu, Kaiming Yang, Fei Guo
Summary: This study proposes a novel configuration for sediment microbial fuel cells (SMFCs) by embedding a cylindrical borehole in the sediment layer to reduce internal resistance, enhance mass transfer, and increase power density. Experimental results show that SMFC-3 with a borehole depth of 3 cm produces the highest maximum power density, which is 25.5% and 65.6% higher than that in SMFC-6 with a borehole depth of 6 cm and the control group SMFC-C, respectively. The improved power performance in SMFC-3 is mainly attributed to the greatly reduced internal resistance and suitable pH conditions for cathodic reactions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Bogatu Nicoleta, Benea Lidia, Buruiana Daniela-Laura, Basliu Vasile, Celis Jean-Pierre
Summary: The electrodeposition method was used to obtain nanostructured layers of Co/nano-CeO2 on 304L stainless steel. The influence of current densities and nanoparticle concentrations on the characteristics of the obtained nanostructured layers was discussed. The results showed that the nanostructured layers became more hydrophilic with increasing nanoparticle concentration and increasing current density.
Article
Chemistry, Physical
Muruganantham Rethinasabapathy, A. T. Ezhil Vilian, Seung Kyu Hwang, Sung-Min Kang, Youngjin Cho, Young-Kyu Han, Jin-Kyu Rhee, Yun Suk Huh
Summary: In this study, spinel cobalt ferrite hierarchical flower-like microspheres were successfully fabricated and utilized as a biocompatible anode in microbial fuel cells, achieving high power output. The unique morphology and charge properties of CoFe2O4-MS promoted efficient interfacial interactions with Escherichia coli, resulting in more effective electron transfer and power generation.
JOURNAL OF POWER SOURCES
(2021)
Article
Environmental Sciences
Chao-Chin Chang, Shiue-Lin Li, Anyi Hu, Chang-Ping Yu
Summary: Microorganisms were found to improve cathode performance in microbial fuel cells. Long-term performance of bio-catalyzed cathodes and FePc-catalyzed cathodes were evaluated, with bio-catalyzed cathodes showing better total nitrogen removal. The study demonstrated the potential of bio-catalyzed cathodes for continuous wastewater treatment and energy harvesting.
Article
Multidisciplinary Sciences
Xinyi Ren, Jian Zhao, Xuning Li, Junming Shao, Binbin Pan, Aude Salame, Etienne Boutin, Thomas Groizard, Shifu Wang, Jie Ding, Xiong Zhang, Wen-Yang Huang, Wen-Jing Zeng, Chengyu Liu, Yanguang Li, Sung-Fu Hung, Yanqiang Huang, Marc Robert, Bin Liu
Summary: Deciphering the reaction mechanisms of CO/CO2 electroreduction to methanol remains challenging. Here the authors report the higher electron density of single-Co-atom center, along with a different adsorption configuration of *CO, is crucial for promoting the CO electroreduction to methanol.
NATURE COMMUNICATIONS
(2023)
Article
Biotechnology & Applied Microbiology
Daniel Chikere Ali, Xuehong Zhang, Zhilong Wang
Summary: Interfacial microbial degradation of alkane in Pickering emulsions is a new mechanism where water-insoluble chemicals in the oil phase and water-soluble nutrients in the water phase are accessible to microorganisms anchoring onto the oil-water interfaces. In this study, the degradation of tetradecane by super-hydrophobic Mycobacterium sp. was investigated. The addition of fumed SiO2 particles enhanced the degradation by approximately 80% through improving the emulsion efficiency and interfacial microbial degradation in Pickering emulsions.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2023)
Article
Environmental Sciences
Jiali Xian, Hua Ma, Zhe Li, Chenchen Ding, Yan Liu, Jixiang Yang, Fuyi Cui
Summary: Nanowires synthesized from metal oxides, specifically alpha-FeOOH nanowires, were shown to enhance the electrochemical activity and power generation efficiency of microbial fuel cells (MFC). The nanowires decreased electron transfer resistance, increased power density of MFC by 3.2 times, and facilitated biofilm formation and biomass increase on the electrode surface. This study provides further evidence for the potential applications of metal nanowires in electricity generation fields.
Article
Agricultural Engineering
Ji Eun Kim, Shashi Kant Bhatia, Hak Jin Song, Eunjin Yoo, Hyeon Jin Jeon, Jae-Yoon Yoon, Yunjeong Yang, Ranjit Gurav, Yung-Hun Yang, Hyung Joo Kim, Yong-Keun Choi
BIORESOURCE TECHNOLOGY
(2020)
Article
Environmental Sciences
Yong-Keun Choi, Tae-Rim Choi, Ranjit Gurav, Shashi Kant Bhatia, Ye-Lim Park, Hyung Joo Kim, Eunsung Kan, Yung-Hun Yang
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Chemistry, Multidisciplinary
Yong-Keun Choi, Ranjit Gurav, Hyung Joo Kim, Yung-Hun Yang, Shashi Kant Bhatia
APPLIED SCIENCES-BASEL
(2020)
Article
Engineering, Chemical
Balashanmugam Pannerselvam, Prabhu Durai, Devasena Thiyagarajan, Hak Jin Song, Kwang Jin Kim, Yun Seok Jung, Hyung Joo Kim, Senthil Kumaran Rangarajulu
Article
Biotechnology & Applied Microbiology
Kalishwaralal Kalimuthu, Ji Min Kim, Chandramohan Subburaman, Woo Young Kwon, Sung Hyun Hwang, Sehan Jeong, Min Geun Jo, Hyung Joo Kim, Ki Soo Park
JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY
(2020)
Article
Biotechnology & Applied Microbiology
Jae-Yoon Yoon, Ji Eun Kim, Hak Jin Song, Kyung Bin Oh, Jeong Wook Jo, Yung-Hun Yang, Sang Hyun Lee, Gwangnam Kang, Hyung Joo Kim, Yong-Keun Choi
Summary: This study evaluated the adsorptive behaviors of grape pomace-derived biochar for the removal of the pesticide cymoxanil. Biochar produced at low pyrolytic temperature showed the highest cymoxanil adsorption capacity at pH 7, attributed to a combination of metal and hydrophilic interactions. The pseudo-second order kinetics and Freundlich isotherm model were found to be the best fit for the adsorption process.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Engineering, Chemical
Balashanmugam Pannerselvam, Devasena Thiyagarajan, Annamalai Pazhani, Kalaichelvan Pudupalayam Thangavelu, Hyung Joo Kim, Senthil Kumaran Rangarajulu
Summary: In this study, plant-mediated silver nanoparticles were synthesized using Copperpod plant leaf extracts, which showed significant anti-cancer properties against various cancerous cells. The nanoparticles exhibited cytotoxic effects with IC50 values ranging from 53 to 69 μg/mL, and apoptosis was induced in cancer cells through DNA fragmentation technique.
Article
Environmental Sciences
Jin Sun Cha, Seong-Ho Jang, Su Shiung Lam, Hyungjoo Kim, Young-Min Kim, Byong-Hun Jeon, Young-Kwon Park
Summary: Biochar produced from pyrolysis of Kraft lignin, modified with CO2 and impregnated with FeOx, showed improved physicochemical properties and arsenic (V) adsorption performance. Among the tested biochars, FeOx-LC-800 displayed the highest adsorption efficiency for arsenic (V) due to its highest Fe-O intensity and large surface area. The Langmuir adsorption model was suitable for fitting the adsorption curve, with a calculated theoretical equilibrium adsorption amount (q(e)) of 6.8 mg/g using a pseudo-second-order kinetic model.
Article
Biochemical Research Methods
Yunjeong Yang, Ji Eun Kim, Hak Jin Song, Eun Bin Lee, Yong-Keun Choi, Jeong Wook Jo, Hyeon Jin Jeon, Ho Hyun Kim, Kwang Jin Kim, Hyung Joo Kim
Summary: The study developed a non-invasive monitoring system using a coil probe to detect water content variation in live plants. The results showed noticeable SWR changes at various frequencies when water was added to experimental plants under drought conditions. Using a fixed frequency, a more comprehensive monitoring of water content variation within a plant and the effect of illumination on water content was achieved.
Article
Engineering, Chemical
Gayathri Vijayakumar, Hindhuja Kesavan, Anisha Kannan, Dhanalakshmi Arulanandam, Jeong Hee Kim, Kwang Jin Kim, Hak Jin Song, Hyung Joo Kim, Senthil Kumaran Rangarajulu
Summary: The study focused on the biogenic synthesis of copper nanoparticles using different spice extracts, demonstrating the antibacterial properties of CuNPs formulated with spices. Among the three spice extracts, star anise showed the highest antibacterial activity, suggesting the potential therapeutic applications of CuNPs phyto-formulated with spice extracts.
Article
Engineering, Environmental
Hak Jin Song, Ranjit Gurav, Shashi Kant Bhatia, Eun Bin Lee, Hyung Joo Kim, Yung-Hun Yang, Eunsung Kan, Ho Hyun Kim, Sang Hyun Lee, Yong-Keun Choi
Summary: This study investigated the adsorption behaviors of microcystin-LR on pristine biochars derived from various waste biomass, with KB biochar prepared at 750 degrees C showing the highest adsorption capacity. The results suggest that KB biochar could be an effective and cheap adsorbent for removing microcystin-LR from wastewater.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Plant Sciences
Yong-Keun Choi, Hak-Jin Song, Jeong-Wook Jo, Seong-Won Bang, Byung-Hoon Park, Ho-Hyun Kim, Kwang-Jin Kim, Na-Ra Jeong, Jeong-Hee Kim, Hyung-Joo Kim
Summary: This study investigated the impact of watering, drought, and illumination conditions on PM2.5 removal in a plant-based biofilter system. The findings suggest that under drought with constant light condition, the highest PM2.5 removal efficiency and leaf characteristics changes were observed.
Article
Polymer Science
Saerom Park, Jeong Woo Lee, Ji Eun Kim, Gwangnam Kang, Hyung Joo Kim, Yong-Keun Choi, Sang Hyun Lee
Summary: Alginate/biochar hydrogel beads were prepared and used for the removal of Cu2+ and benzene from wastewater. The results showed that the adsorption capacities for Cu2+ and benzene were improved with increasing alginate and biochar content. The adsorption behavior of the hydrogel beads was similar in the concurrent system compared to the single pollutant system. The kinetics and isotherm studies followed the pseudo-second-order model and Langmuir model. In addition, the hydrogel beads exhibited high reusability.
Article
Infectious Diseases
Gayathri Vijayakumar, Hyung Joo Kim, Senthil Kumaran Rangarajulu
Summary: In this study, probiotic bacteria were used to synthesize silver nanoparticles with significant antioxidant and antibacterial activities. The biosynthesized AgNPs showed significant wound-healing capabilities, as observed through an in vitro scratch-wound assay. Cytotoxic experiments demonstrated that the biosynthesized AgNPs were not extremely hazardous to fibroblast cells.
Article
Biochemistry & Molecular Biology
Hak Jin Song, Sung Woo Yang, Jeong Wook Jo, Yong-Keun Choi, Im-Soon Lee, Byung Uk Lee, Sang Hyun Lee, Ho Hyun Kim, Kwang Jin Kim, Hyung Joo Kim
Summary: The control of indoor particles using plants has become an area of interest due to global air pollution and the spread of pandemic-causing viruses. However, the interaction between human pathogenic viruses (HPVs) and live plants has not been extensively studied due to difficulties in detecting small amounts of infectious viruses and the lack of suitable examination methods. This study examined the effect of submerged leaves of live plants on HPVs in water, with promising results showing a decrease in virus concentrations within 72 hours.
PLANT SIGNALING & BEHAVIOR
(2023)