Article
Chemistry, Multidisciplinary
Nikola L. Drenchev, Boris L. Shivachev, Lubomir D. Dimitrov, Konstantin I. Hadjiivanov
Summary: Efficient CO2 capture materials should have high adsorption capacity, suitable CO2 adsorption enthalpy, and resistance to water vapor. This study investigates the effect of water on CO2 adsorption and identifies various mixed ligand complexes formed in the presence of water. The results show that water in moderate amounts does not block CO2 adsorption sites. Evaluation: 8/10
Article
Thermodynamics
Junhui Lu, Jinjing Tang, Junming Li, Suilin Wang
Summary: This experiment investigated the breakthrough curves and adsorption amounts of N-2/H2O and CO2/H2O on four different adsorbents. The results showed that flow rate, temperature, and inlet steam mole fraction had significant effects on the adsorption process. Zeolite 3A exhibited good selectivity for CO2/H2O and N-2/H2O.
APPLIED THERMAL ENGINEERING
(2022)
Article
Engineering, Environmental
Yanxia Wang, Xiude Hu, Tuo Guo, Wengang Tian, Jian Hao, Qingjie Guo
Summary: The study investigated the effects of H2O and O2 on the CO2 adsorption performance of CNT-PEI, finding that H2O had the highest adsorption energy and diffusion coefficient, leading to increased CO2 capacity. O2 had a minor impact on CO2 capacity for fresh adsorbent, but its oxidation effect on amino groups was significant, prolonging desorption time.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Pengbo Hu, Qiyu Weng, Duanle Li, Tao Lv, Shujuan Wang, Yuqun Zhuo
Summary: This study theoretically investigated the effects of flue gas constituents on As2O3 adsorption on γ-Al2O3 surface using DFT, finding that O2 converts most physisorption structures to chemisorption structures and the differences in stable adsorption structures of O2, H2O, SO2, and CO2 are the main factors affecting the positions and quantities of As2O3 physisorption structures. This research provides valuable information for enhancing the capture capacities of γ-Al2O3 in actual flue gas environments.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Riku Shibuya, Kotaro Takeyasu, Donghui Guo, Takahiro Kondo, Junji Nakamura
Summary: The adsorption of CO2 on nitrogen-doped graphitic carbon materials was studied using various techniques. It was found that only pyridinic nitrogen species created identical CO2 adsorption sites. The adsorption energy of CO2 on pyridinic nitrogen-doped carbons was estimated to be between 101 and 108 kJ mol-1, indicating chemisorption. The adsorption/desorption process was reproducible and CO2 did not dissociate during the process. XPS measurements showed clear peaks indicating the presence of adsorbed CO2. The N 1s peak of pyridinic nitrogen did not change with CO2 adsorption.
Article
Chemistry, Applied
Gabriel Landeta Avellaneda, Renaud Denoyel, Isabelle Beurroies
Summary: This study investigates the application of modified and grafted materials in reducing CO2 emissions in the air. The results show that the CO2 adsorption capacity and affinity can be improved by modifying the silica structure and grafting amine groups. However, in high humidity conditions, water affects the adsorption efficiency of CO2.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Engineering, Environmental
Dongdong Feng, Dawei Guo, Yu Zhang, Shaozeng Sun, Yijun Zhao, Guozhang Chang, Qingjie Guo, Yukun Qin
Summary: This research explored the adsorption characteristics of CO2 and NH3 by using one-step/two-step activated functionalized biochar. The results showed that the microstructure and surface functional groups of biochar play a crucial role in the adsorption process.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Dan Zhao, Xiaoqing Liu
Summary: Through DFT simulations, the adsorption mechanism of H2O, CO2, and CH4 molecules on oxygen-containing functional groups in coal molecules was investigated. It was found that the -COOH functional group had the strongest bonding with H2O molecules and the highest adsorption capacity for all three molecules.
Article
Engineering, Electrical & Electronic
Mandar Jatkar, Kamal K. Jha, Sarat K. Patra
Summary: This study investigates the structural stability and electronic properties of AGaNNRs and their adsorption capabilities for different gas molecules. The results show that the properties of AGaNNRs change depending on the adsorbed gas molecule, with the O-2-AGaNNR configuration being the most stable. The CO2-AGaNNR configuration demonstrates potential applications for fast sensing devices.
IEEE SENSORS JOURNAL
(2022)
Article
Energy & Fuels
Anshuman Sinha, Harshul Thakkar, Fateme Rezaei, Yoshiaki Kawajiri, Matthew J. Realff
Summary: The rapid growth in global energy consumption has raised concerns over environmental impacts, particularly in enclosed spaces like commercial buildings which account for about 40% of global energy consumption. To address this, a ventilation system has been proposed to regulate air quality and reduce the need for air conditioning, resulting in a 55% improvement in energy efficiency compared to conventional systems. Scaling up this model to the size of New York City's office inventory could lead to a significant reduction in carbon emissions, equivalent to replacing 57 million incandescent light bulbs with LEDs.
Article
Energy & Fuels
Jinjin Li, Tangying Cheng, Hao Wu, Linjun Yang
Summary: This study developed a novel route to synthesize graphitic resin-based activated carbon (GRC) and investigated its selective adsorption behaviors of VOCs/water vapor. The obtained GRC showed outstanding graphitization degree, lower O content, and hierarchical pore structure, leading to high dynamic adsorption capacity. The competitive adsorption mechanism was explored from the perspective of surface oxygen groups and pore size, revealing that lower surface oxygen groups content contributed to the excellent adsorption selectivity.
Article
Chemistry, Multidisciplinary
Jiguang Zhang, Yuting Guo, Bin Shang, Tingting Fan, Xinyi Lian, Pingping Huang, Yunyun Dong, Zhou Chen, Xiaodong Yi
Summary: A g-C3N4-supported Cu2O composite was fabricated in this study, which showed efficient and stable reduction of carbon dioxide to ethylene, providing a promising strategy for reducing carbon dioxide emissions and producing high value-added chemicals.
Article
Engineering, Chemical
Pengbo Hu, Shujuan Wang, Yuqun Zhuo
Summary: In this study, the adsorption mechanisms of CO2 on pure/doped h-BN were investigated using DFT calculations, revealing that doping of C/N and presence of H2O can enhance CO2 adsorption. It was also found that the TS energy barrier of CO2 adsorption is a crucial factor affecting adsorption strength. These research results provide valuable information for exploiting h-BN for massive CO2 adsorption in industrial situations.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Kamal K. Jha, Mandar Jatkar, Pradyumna Athreya, M. P. Tejas, Sandeep Kumar Jain
Summary: This article investigates the electronic properties and structural stability of ZInNNR structures, as well as the effects of adsorption gases. The results show that bare ZInNNR structures have metallic characteristics, and bare-ZInNNR-6 and Pristine-6 structures are the most thermostatically stable. Among the adsorption gases, CO, CO2, NO, and NO2 show the highest energetically favorable configurations when adsorbed by ZInNNR-6.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Physical
Aoping Guo, Xiaobao Zhang, Baiyi Shao, Song Sang, Fangming Cui, Xiaojing Yang
Summary: Fe-encapsulated graphitic nanoribbons derived from pyrrole and FeCl3 exhibit excellent capacitive and cycle performance in supercapacitors, providing high specific capacitance and capacitance retention rate.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Materials Science, Multidisciplinary
Adrian Gutierrez-Cruz, Ali Roberto Ruiz-Hernandez, Jose Fernando Vega-Clemente, Daniela Guadalupe Luna-Gazcon, Jessica Campos-Delgado
Summary: As nanotechnology advances, nanomaterials like graphene are gaining attention due to their unique properties and potential. This document reviews the synthesis methods of graphene, graphene oxide, and reduced graphene oxide, focusing on important techniques such as chemical vapor deposition and wet-chemical methods. The current production status and challenges of graphene and graphene oxide are analyzed.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Ryan Selhorst, Zhuohang Yu, David Moore, Jie Jiang, Michael A. Susner, Nicholas R. Glavin, Ruth Pachter, Mauricio Terrones, Benji Maruyama, Rahul Rao
Summary: Layered Transition Metal Dichalcogenides (TMDs) are important materials with a diverse range of optoelectronic properties. This study investigates the spatial tailoring of TMDs through electron-beam patterning, achieving high resolution and demonstrating potential for nanoscale functionalization. The modulated properties were found to be dependent on various parameters, and the results were confirmed through spectroscopic analysis and density functional theory modeling. This research provides a robust method for property modulation and functionalization of TMDs at the nanoscale.
Editorial Material
Chemistry, Physical
Nianjun Yang, Mauricio Terrones
Article
Chemistry, Multidisciplinary
Min Fu, Wei Chen, Yu Lei, Hao Yu, Yuxiao Lin, Mauricio Terrones
Summary: A general biomimetic mineralization synthetic strategy was proposed to synthesize ferrite quantum dot/graphene heterostructures. The optimized heterostructure exhibited exceptional capacitance and cycling performance, indicating its potential as advanced electrode materials for supercapacitors.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Katherine L. Thompson, Rowan R. Katzbaer, Mauricio Terrones, Raymond E. Schaak
Summary: Ion exchange reactions of colloidal nanoparticles allow for modification of composition while maintaining morphology and crystal structure, which is crucial for tuning properties and producing otherwise inaccessible materials. In this study, tellurium anion exchange of copper selenide nanoparticles was conducted, resulting in the formation of solid solutions with tunable compositions. The post-exchange reactivity of the solid solution nanoparticles, including transformation of composition, surface chemistry, and colloidal dispersibility, was observed due to the apparent metastability of the product.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Kai Haraguchi, Sogo Iwakami, Tomonori Ohba
Summary: In this study, fullerene-pillared porous graphene was prepared and its water vapor adsorption properties were investigated both experimentally and through simulations. The results showed that fullerene-pillared porous graphene with a 25±8% fullerene filling ratio had the highest adsorption capacity and uniform nanopores.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Jie Fang, Suichu Huang, Kan Yao, Tianyi Zhang, Mauricio Terrones, Wentao Huang, Yunlu Pan, Yuebing Zheng
Summary: Tunable exciton-photon couplings have been demonstrated in monolayer TMDs, showing strong bright-exciton-photon couplings and revealing the novel interactions between bright and dark exciton-photon hybrids in a single optical cavity. The waveguide mode can be tuned in wavelengths by controlling the spacer thickness, and the relative contribution from the antenna mode coupled with dark excitons can be dynamically enlarged by increasing the excitation angle. This study opens new possibilities in tunable QED and provides insights into the coexistence of bright and dark exciton-photon couplings.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Pouria Fattahi, Yin-Ting Yeh, Tiankai Zhao, Mousa Younesi, Changjin Huang, Mauricio Terrones, Siyang Zheng, Justin L. Brown, Dan Dongeun Huh, Sulin Zhang, Peter J. Butler
Summary: Endothelial cells (ECs) exhibit different shapes and mechanical properties depending on the flow in their environment, and these factors affect the uptake of therapeutic nanoparticles (NPs). Cells with elongated shape and higher stiffness show higher uptake of NPs, while those with polygonal shape and lower stiffness show lower uptake. The elongated cells in areas of high laminar shear exhibit less NP uptake compared to nonelongated cells in chaotic, lower shear areas. These findings suggest that manipulating the morphology and mechanical properties of ECs can enhance the uptake of therapeutic NPs for preventing atherosclerosis.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Chemistry, Physical
Shannon McGee, Andres Fest, Cierra Chandler, Nabila N. Nova, Yu Lei, James Goff, Susan B. Sinnott, Ismaila Dabo, Mauricio Terrones, Lauren D. Zarzar
Summary: In this study, we synthesized multimetal catalysts using a laser synthesis method and found that adding a small amount of chromium to the catalyst can enhance the hydrogen evolution efficiency. This research provides new insights for future electrocatalytic design.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Electrochemistry
Shunsuke Hasumi, Sogo Iwakami, Yuto Sasaki, Sharifa Faraezi, Md Sharif Khan, Tomonori Ohba
Summary: Carbon materials like graphite and activated carbon are widely used as electrodes in batteries and electric double-layer capacitors. Graphene, a thin sheet-like material, is considered a fundamental carbon material, but it has been less studied as an electrode material compared to graphite and activated carbons due to its novelty and difficulty in handling. However, the use of graphene electrodes can enhance the performance of nanodevices. This study evaluated the performance of electric double-layer capacitors based on single-layer and bilayer graphene electrodes in different aqueous electrolyte solutions and investigated the charging mechanism using molecular dynamics simulations.
Article
Chemistry, Multidisciplinary
Aaryan Oberoi, Ying Han, Sergei P. Stepanoff, Andrew Pannone, Yongwen Sun, Yu-Chuan Lin, Chen Chen, Jeffrey R. Shallenberger, Da Zhou, Mauricio Terrones, Joan M. Redwing, Joshua A. Robinson, Douglas E. Wolfe, Yang Yang, Saptarshi Das
Summary: This study presents a three-pronged approach to achieve high-performance p-type FETs based on synthetic WSe2, including contact engineering, channel length scaling, and monolayer doping. By using Pd as the contact metal and monolayer WOxSey as the p-type dopant, the ON-state performance of the FETs was significantly improved and the contact resistance was reduced.
Article
Chemistry, Multidisciplinary
Jie Fang, Kan Yao, Mingsong Wang, Zhuohang Yu, Tianyi Zhang, Taizhi Jiang, Suichu Huang, Brian A. Korgel, Mauricio Terrones, Andrea Alu, Yuebing Zheng
Summary: In this study, we achieved on-demand exciton-polariton emission from a wide range of TMDs at room temperature by hybridizing excitons with broadband Mie resonances. The system demonstrated stable polaritonic photoluminescence and multiple Rabi splittings.
Article
Materials Science, Multidisciplinary
Gowtham Polumati, Barbara A. Muniz Martinez, Chandra Sekhar Reddy Kolli, Venkatarao Selamneni, Mario Flores Salazar, David Emanuel Sanchez, Andres Fest Carreno, Mauricio Terrones, Andres De Luna Bugallo, Parikshit Sahatiya
Summary: This work demonstrates the band-type engineering and charge transport mechanism of vertically stacked monolayers of MoS2-ReS2 under visible light illumination. The study investigates the impact of stacking order on band alignment and validates the formation of the vertically stacked heterostructure. The results show the significant role of stacking configuration in the optoelectronic properties.
Article
Chemistry, Multidisciplinary
Victor Carozo, Bruno R. Carvalho, Syed Hamza Safeer, Leandro Seixas, Pedro Venezuela, Mauricio Terrones
Summary: We investigated the electronic and phonon properties of few-layered Bi2Te3 systems with different layer thicknesses using Raman spectroscopy and first-principles calculations. The main Raman modes showed frequency dispersion and changes in intensity and lineshape with the variation of layer thickness and excitation energy. Resonant Raman conditions were reached for certain thicknesses due to van Hove singularities at the electronic density of states. Our results demonstrate the significant influence of layer numbers on the Raman scattering mechanics in Bi2Te3 systems.
NANOSCALE ADVANCES
(2023)
Article
Nanoscience & Nanotechnology
Luis E. Paniagua-Guerra, Mauricio Terrones, Bladimir Ramos-Alvarado
Summary: This research reports on the effects of the chemical composition of graphene oxide (GO) sheets on the mechanical properties of bulk GO, and analyzes three key factors. The findings reveal the importance of the structural integrity of the carbon basal plane and hydrogen-bond networks in determining the mechanical behavior of GO, as well as the negative impact of interlayer sulfate ion contaminants on the mechanical properties of GO.
ACS APPLIED MATERIALS & INTERFACES
(2022)
