Article
Chemistry, Physical
Xiaoying Mao, Yaping Zhang, Yun Xu, Yu Zhou, Ke Zhuang, Kai Shen, Shipeng Ding
Summary: In this study, a series of ZnZrOx catalysts with different ratios of vacancy oxygen to lattice oxygen were prepared using the solid phase milling approach. It was found that there is a linear relationship between lattice oxygen concentration and methanol selectivity, elucidating the key role of lattice oxygen in CO2 hydrogenation to methanol.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Liang Huang, Ge Gao, Chaobo Yang, Xiao-Yan Li, Rui Kai Miao, Yanrong Xue, Ke Xie, Pengfei Ou, Cafer T. T. Yavuz, Yu Han, Gaetano Magnotti, David Sinton, Edward H. H. Sargent, Xu Lu
Summary: Electrochemical CO2 reduction (CO2R) is a method to close the carbon cycle for chemical synthesis. The research has mainly focused on ambient pressure CO2, but industrial CO2 is usually pressurized and in dissolved form. By studying the effects of pressure on CO2R, the researchers found that higher pressure leads to increased formate selectivity. They further enhanced this pressure-mediated effect by functionalizing the surface of a Cu cathode with a proton-resistant layer. This work highlights the potential of using industrial CO2 as a feedstock for sustainable chemical synthesis.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Won Seok Cho, Dae Myung Hong, Wan Jae Dong, Tae Hyung Lee, Chul Jong Yoo, Donghwa Lee, Ho Won Jang, Jong-Lam Lee
Summary: In this study, bismuth-based catalysts were introduced for the efficient electrochemical reduction of CO2 to formic acid. The catalysts consisted of petal-shaped Bi2O2CO3 (BOC), which spontaneously formed from Bi thin film in aqueous carbonate solution at room temperature. The BOC petals transformed to reduced BOC (R-BOC) during the electrochemical reduction process, and the lattice mismatch between the domains induced strain at the interfaces. The R-BOC petals exhibited a superior Faradaic efficiency of 95.9% for the electrochemical conversion of CO2 to formic acid.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hanna H. Cramer, Shubhajit Das, Matthew D. Wodrich, Clemence Corminboeuf, Christophe Werle, Walter Leitner
Summary: This article explores the stepwise catalytic reduction of CO2 to formic acid, formaldehyde, and methanol using organometallic catalysts of earth-abundant first-row metals. A linear scaling relationship is developed to map the intrinsic reactivity of transition metal pincer complexes to their activity and selectivity in CO2 hydrosilylation. The hydride affinity of the catalysts is used to predict activity/selectivity trends, and cobalt complexes with bis(phosphino)triazine PNP-type pincer ligands exhibit outstanding properties in reaching the three reduction levels selectively. The results validate the potential of tandem computational-experimental approaches in catalyst design for CO2-based chemical transformations.
Article
Chemistry, Multidisciplinary
Yongchao Yao, Weihua Zhuang, Ruizhi Li, Kai Dong, Yonglan Luo, Xun He, Shengjun Sun, Sulaiman Alfaifi, Xuping Sun, Wenchuang (Walter) Hu
Summary: Electrochemical CO2 reduction into value-added chemicals is an attractive approach but hindered by low efficiency and selectivity. Sn-based electrocatalysts have gained attention for their merits. This review provides an overview of recent advances in Sn-based catalysts, including CO2RR mechanism, performance, challenges, and future prospects.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Analytical
Yixin Zhang, Fulin Li, Jing Dong, Kaichao Jia, Tingting Sun, Lianbin Xu
Summary: This review summarizes the recent research progress of highly efficient electrocatalysts for the electrochemical conversion of CO2 to formic acid or formate. The focus is on nanostructured catalysts, single atom catalysts, doped or alloyed catalysts, and supported catalysts, as well as the synthetic strategies and theoretical designs to improve the Faradaic efficiency, current density, and stability of the electrochemical CO2 reduction reaction. The current challenges and further perspectives of the electrocatalysts for electrochemical CO2 reduction are also discussed.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Chemical
Vera Boor, Jeannine E. B. M. Frijns, Elena Perez-Gallent, Erwin Giling, Antero T. Laitinen, Earl L. V. Goetheer, Leo J. P. van den Broeke, Ruud Kortlever, Wiebren de Jong, Othonas A. Moultos, Thijs J. H. Vlugt, Mahinder Ramdin
Summary: The research investigated the electrochemical reduction of CO2 to oxalic acid on a lead cathode in various nonaqueous solvents. It presented a process design and techno-economic evaluation for the electrochemical conversion and showed that market price of oxalic acid has a significant impact on the economics, requiring at least $700/ton for positive net present value and less than 10 years payback time.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Energy & Fuels
Alessandro Senocrate, Corsin Battaglia
Summary: Electrochemical CO2 reduction technology shows great promise for decarbonizing our society. Recent advancements in using CO2 electrolyzers at room temperature, particularly those employing gas diffusion electrodes, have bridged the gap between laboratory-scale research and practical applications.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Halilu Sale, Gangi Reddy Ubbara, Mark D. Symes
Summary: The electrochemical reduction of carbon dioxide to oxalate/oxalic acid is a promising method for sustainable production of key chemical feedstocks. In this study, benzonitrile was used as a catalyst to achieve high yields and rates of oxalate/oxalic acid production in a propylene carbonate solvent system.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Chemistry, Multidisciplinary
Atsushi Otake, Jinglun Du, Yasuaki Einaga
Summary: In this study, highly selective electrochemical reduction of CO2 in a halogen-free electrolyte was achieved by activating a boron-doped diamond electrode, increasing the Faradaic efficiency of formic acid from 10% to 90%.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Review
Chemistry, Physical
Xinxin Li, Linchuan Cong, Nan Lin, Cheng Tang
Summary: This article comprehensively reviews the research progress of electrochemical upgradation of furfural in recent years, focusing on energy optimization, including electrochemical oxidation/reduction reactions and paired electrosynthesis systems. The studies elucidate reaction pathways and mechanisms, and emphasize the design principles of electrocatalysts and electrochemical reactors.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Naoya Onishi, Yuichiro Himeda
Summary: CO2 conversion is a vital technology for reducing emissions, and methanol production from CO2 using organometallic catalysts shows promise due to its advantages compared to heterogeneous catalysts. This article provides an overview of the current state of both indirect and direct methods for methanol production from CO2, focusing on the design of organometallic catalysts and reaction processes.
Article
Chemistry, Physical
Manu Gautam, Dillon T. Hofsommer, Sandesh S. Uttarwar, Nolan Theaker, William F. Paxton, Craig A. Grapperhaus, Joshua M. Spurgeon
Summary: CO2 electroreduction to value-added products is a promising technique for mitigating climate change, but CO2 purification increases the process cost. This study investigates the electroreduction of flue gas in an acidic methanol catholyte using a Pb-catalyzed electrode and an aqueous anolyte. The presence of contaminants has minimal effect on the product efficiency, while increased oxygen concentration improves the production. However, decreasing CO2 concentration limits the current density.
Review
Chemistry, Multidisciplinary
Robin Cauwenbergh, Shoubhik Das
Summary: With the increasing awareness of green chemistry, carbon capture and utilization (CCU) has gained more attention compared to carbon capture and storage (CCS). Sustainable methods for converting CO2 into valuable products have become popular and important for society. This review specifically focuses on the production of formic acid using homogeneous catalysts under photocatalytic conditions, aiming to stimulate further research in this rapidly growing field.
Article
Chemistry, Multidisciplinary
Peng Gong, Can Tang, Boran Wang, Taishi Xiao, Hao Zhu, Qiaowei Li, Zhengzong Sun
Summary: A chemical vapor deposition method has been developed to catalytically convert CO2 into high-quality bilayer graphene single crystals, providing a new pathway for the conversion of CO2 into high-value-added products.
ACS CENTRAL SCIENCE
(2022)
Article
Environmental Studies
Aparna Singh, Akhilesh Kumar Choudhary, Shailendra Sinha, Hitesh Panchal, Kishor Kumar Sadasivuni
Summary: This study aims to optimize vibrations in a single-cylinder variable compression ratio diesel engine driven by Jatropha biodiesel blend, resulting in a biodiesel yield of 81.6% and proposed optimum setting of engine input parameters for B30 blend. The experimental outcome reveals that B30 blend generated root mean square acceleration of 4.46 m/s(2) at above optimized conditions, with error percentage of 2.3356% and 1.3039% for B0 and B30 blend.
ENERGY & ENVIRONMENT
(2023)
Article
Telecommunications
M. Joseph Auxilius Jude, V. C. Diniesh, M. Shivaranjani, Suresh Muthusamy, Hitesh Panchal, Suma Christal Mary Sundararajan, Kishor Kumar Sadasivuni
Summary: This article proposes a delay assisted rate tuning (DART) approach for the vehicular internet of things network to overcome the inherent limitations of the transmission control protocol (TCP) in wireless link congestion control. The approach utilizes the utilization assisted reduction (UAR) algorithm and super linear convergence (SLC) algorithm to improve transmission rate and minimize bandwidth sharing disparity.
WIRELESS PERSONAL COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Sakib Mahmud, Amith Khandakar, Muhammad E. H. Chowdhury, Mohammed AbdulMoniem, Mamun Bin Ibne Reaz, Zaid Bin Mahbub, Kishor Kumar Sadasivuni, M. Murugappan, Mohammed Alhatou
Summary: This study reports the development of a smart insole based on Fiber Bragg Gratings (FBG) that can simultaneously measure plantar pressure and temperature. The developed insole outperforms a commercially available system in terms of cost, precision, and real-time data display of foot pressure and temperature.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Biotechnology & Applied Microbiology
Aditi Sangal, Sunita Rattan, Muni Raj Maurya, Kishor Kumar Sadasivuni
Summary: Nanobiotechnology is a promising method to enhance the efficacy of hydrophobic bioactive compounds by improving their bioavailability. In this study, cinnamon and cumin dual drug-loaded PLGA nanoparticles were synthesized to overcome the limitations of oral bioavailability. The nanoparticles were characterized using SEM, FTIR, TEM, and XRD. The results showed that cinnamon and cumin were amorphously dispersed in the PLGA matrix and the drug release from the nanoparticles was slow.
Article
Materials Science, Multidisciplinary
Vijayalakshmi Jagadeesan, Dinesh Venkatachalam, Vibin Mammen Vinod, Ashok Kumar Loganathan, Suresh Muthusamy, Mahendran Krishnamoorthy, Kishor Kumar Sadasivuni, Mithra Geetha
Summary: A metamaterial sensor antenna is designed and tested to detect breast cancer by utilizing the electrical characteristics of breast cancer cells. The antenna is designed using the Minkowski fractal curve and a ring-shaped Split Ring Resonator (SRR), providing a simple and efficient solution. Through numerical investigations, it is found that the third iteration of the Minkowski fractal curve yields the best performance. The fabricated antenna resonates at frequencies of 2.35, 2.42, and 2.52 GHz for different dielectric constants and conductivity, demonstrating its effectiveness and selectivity with different cancer cell lines.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Physical
Mizaj Shabil Sha, Farzana N. Musthafa, Assem Alejli, Johaina Khalid Alahmad, Bagmita Bhattacharyya, Bijandra Kumar, Aboubakr M. Abdullah, Kishor Kumar Sadasivuni
Summary: Electrochemical water splitting is a promising pathway for efficient hydrogen evolution, and the development of effective catalysts or electrocatalysts is crucial. In this study, a graphene-modified nanoparticle catalyst, rGO-TiO2-NiO-ZnO, was evaluated for hydrogen evolution reaction (HER). The presence of rGO as an electron collector and transporter significantly improved the electrocatalytic H-2 production rate, and a current density of 10 mA/cm(2) was achieved at a reduced working potential of 365 mV for the nanocomposite. The electronic coupling effect between the nanoparticle components at the interface contributed to the catalytic activity of the nanoparticle for HER.
Article
Endocrinology & Metabolism
Hoda Gad, Einas Elgassim, Ibrahim Mohammed, Ahmad Yaser Alhaddad, Hussein Ahmed Hussein Zaky Aly, John -John Cabibihan, Abdulaziz Al -Ali, Kishor Kumar Sadasivuni, Ioannis N. Petropoulos, Georgios Ponirakis, Wajeeha Abuhelaiqa, Amin Jayyousi, Dabia AlMohanadi, Khaled Baagar, Rayaz A. Malik
Summary: This study found that cardiac autonomic neuropathy (CAN) is associated with increased glucose variability (GV) in patients with diabetes, leading to greater fluctuations in blood sugar levels. Patients with CAN had lower coefficient of variation (CV) but higher CONGA compared to those without CAN, and spent more time in hypoglycemia.
DIABETES RESEARCH AND CLINICAL PRACTICE
(2023)
Article
Chemistry, Applied
S. Samreen, Deepak Devadiga, B. M. Samrudhi, T. N. Ahipa, Kishor Kumar Sadasivuni
Summary: In this study, four new cyanopyridone derivatives with terminal long chain alkyloxy substituents were designed and synthesized. The synthesized compounds were characterized by IR, NMR, and Mass spectrometry, and their optical properties were examined in solution state. The compounds exhibited blue emissive behavior in solution state and yellow fluorescence in solid state. Moreover, one of the compounds showed intriguing fluorescence properties under applied mechanochromic stimuli. A simple grinding-fuming process confirmed the morphological changes and enhanced the emission property of the studied compound.
Article
Chemistry, Multidisciplinary
Baleeswaraiah Muchharla, Moumita Dikshit, Ujjwal Pokharel, Ravindranath Garimella, Adetayo Adedeji, Kapil Kumar, Wei Cao, Hani Elsayed-Ali, Kishor Kumar Sadasivuni, Naif Abdullah Al-Dhabi, Sandeep Kumar, Bijandra Kumar
Summary: This study examines the performance of reduced silver (rAg) and reduced copper (rCu) catalysts in selective electrochemical hydrogenation (ECH) reactions. The rAg catalyst exhibits more than double the yield and selectivity for the desired product compared to Ag film, making it a promising catalyst for low-energy and high-yield ECH processes.
FRONTIERS IN CHEMISTRY
(2023)
Article
Food Science & Technology
Surya Devarajan, Mizaj Shabil Sha, Mithra Geetha, Johaina Khalid Alahmad, Mohammed Shoaib Taufeeq Shaikh, Suresh Muthusamy, Kamal Kumar Kushwah, Kishor Kumar Sadasivuni
Summary: This study explores the use of three dyes (cresol red, chlorophenol red, and bromocresol green) to analyze the presence of sodium sulfite (SS) in a low-cost, disposable paper sensor with a visible detection limit of 0.05 M. The visual paper sensor shows high selectivity and sensitivity in detecting sodium sulfite at room temperature. An IoT-based sensor was also developed to practically apply the method, offering a rapid and cost-effective alternative to heavy-duty instruments. These sensors have significant implications for food quality monitoring and the detection of sodium sulfite in medicinal items.
JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Baleeswaraiah Muchharla, Brianna Barbee, Marlon Darby, Wei Cao, Hani Elsayed-Ali, Kishor Kumar Sadasivuni, Adetayo Adedeji, Kapil Kumar, Abdennaceur Karoui, Preety Panwar, Gymama Slaughter, Bijandra Kumar
Summary: In this study, we prepared a copper nanofibril assembly using thermal oxidation and electrochemical reduction processes. The resulting structure exhibited excellent glucose detection ability with a high sensitivity, low detection limit, wider linear range, and long-term stability. The enhanced glucose sensing ability of the copper nanofibril structure can be attributed to its morphology, origin of the Cu (111) facet, and formation of a stable oxide layer. This structure showed no response to other interfering substances such as chloride ion, dopamine, ascorbic acid, and uric acid, making it a promising candidate for glucose sensing applications.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Analytical
Mizaj Shabil Sha, Surya Devarajan, Farzana N. Musthafa, Nahla O. Eltai, Swathi Ippili, Venkatraju Jella, Soon-Gil Yoon, Hamad Al-Lohedan, R. Jothi Ramalingam, Kishor Kumar Sadasivuni
Summary: In recent years, there has been growing awareness of antibacterial properties and their commercial opportunities in the medical field. This study presents the fabrication and characterization of a ternary composite, reduced graphene oxide-carbon nanotubes-zirconium oxide (rGO-CNT-ZrO2), and investigates its potential applications for antimicrobial activity, catalytic degradation of dyes, and UV sensing. The nanocomposites were synthesized via the hydrothermal method and characterized using various techniques. The findings suggest that the developed composite exhibits excellent antimicrobial properties, making it promising for the pharmaceutical and medical industries.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Electrical & Electronic
Anbarasan Palani, Venmathi Mahendran, Krishnakumar Vengadakrishnan, Suresh Muthusamy, Om Prava Mishra, Ponarun Ramamoorthi, Muni Raj Maurya, Kishor Kumar Sadasivuni
Summary: The article presents a new power conversion method for parallel-operated wind energy conversion systems. This method utilizes new multilevel inverter (MLI) topologies with reduced switch counts, lowered conduction losses and a very good output voltage spectrum. The power conversion using a novel multilevel DC to AC converter has been proven to have better efficiency, voltage utilization and power quality.
IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY-TRANSACTIONS OF ELECTRICAL ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Godlaveeti Sreenivasa Kumar, Mizaj Shabil Sha, Swathi Yempally, John-John Cabibihan, Kishor Kumar Sadasivuni
Summary: This study presents a methodology for statistically forecasting the time-dependent progression of photoreactions using widely available LEDs, closing the research gap in the analysis of photochemical reactions. The effects of NiS/ZnO additive in perovskite solar cells on forecasting the wavelength of LEDs were carefully investigated using various characterization methods. The photocatalytic activity, as well as factors like selectivity, stability, and sensitivity, were analyzed.
SCIENTIFIC REPORTS
(2023)