Article
Chemistry, Multidisciplinary
Rabindranath Lo, Debashree Manna, Pavel Hobza
Summary: Phosphorous-doped graphene can form a covalent dative bond with the C-60 molecule, while C-60 on graphene and N-doped graphene surfaces can only form vdW complexes. A significant amount of charge transfer from the P-Gr surface to C-60 has been observed, and this complex formation may enhance the optical limiting response. The stability of the P-C dative bond has been evaluated using DFT-D molecular dynamics simulations at 300 K for 10 ps.
CHEMICAL COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Armando D. Martinez-Iniesta, Emilio Munoz-Sandoval, Juan P. Moran-Lazaro, Takuya Hayashi, Morinobu Endo, Aaron Morelos-Gomez, Florentino Lopez-Urias
Summary: Carbon sponges doped with nitrogen and phosphorus show potential for applications in water cleaning, catalysis, and energy storage. The synthesized NP-CNTSs exhibit characteristics such as efficient solvent retention and reversible redox processes. Various spectroscopic techniques reveal the structural and chemical composition of the materials.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Organic
Gi Uk Han, Suhui Kim, Sang Hoon Han, Chanyoung Maeng, Gi Hoon Ko, Kyungsup Lee, Hee Chan Noh, Phil Ho Lee
Summary: Iridium(III)-catalyzed C-H cyclization of sulfoximines with diazo Meldrum's acid produced cyclic sulfoximines with a carbonyl group in good to excellent yields. These compounds were easily converted into unsubstituted and arylated sulfoximines. Furthermore, the vinyl triflates obtained from the cyclic sulfoximines underwent palladium(II)-catalyzed cross-coupling reactions with a variety of aryl, arylalkynyl, and heteroatom (N and S) nucleophiles, yielding a wide range of monosubstituted sulfoximines in high yields.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Energy & Fuels
A. Vijayalakshmi, Radhey Shyam Meena, Vinay Kumar Domakonda, A. Venkateswara Rao, T. Sathish, Umit Agbulut, M. Rajasimman, Sang-Woo Joo, Yasser Vasseghian
Summary: The main objective of this research is to create clean energy from Goshala waste by generating hydrogen fuel and zinc oxide nanoparticles through a chemical reaction with cow urine. The research found that fresh cow urine produces more hydrogen than aged urine.
Article
Environmental Sciences
Rajat Chatterjee, Chanchal Majumder
Summary: This study aimed to synthesize activated carbon from blackboard tree ground bark and enhance its removal efficiency of 2-methylpyridine through carboxyl functionalization. The results showed that carboxyl functionalized activated carbon had twice the adsorption capacity compared to non-functionalized activated carbon, and exhibited good saturation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Soil Science
Catherine Preece, Gerard Farre-Armengol, Erik Verbruggen, Josep Penuelas
Summary: Root exudation is influenced by soil water content and nutrient availability, with different tree species showing varied responses. The amount of exudates released during the recovery period may be affected by the soil water content during drought for certain species.
SOIL BIOLOGY & BIOCHEMISTRY
(2021)
Article
Plant Sciences
Jonathan P. Lynch
Summary: Root architecture is a key factor in breeding programs for developing crops with better water and nutrient capture abilities. Different root characteristics can provide adaptability to different environments and cultivation methods, playing an important role in improving crop yields, reducing production costs, and enhancing the ecological environment.
Article
Multidisciplinary Sciences
Wenping Meng, Quanhou Dai, Qingqing Ren, Na Tu, Tingjiao Leng
Summary: Studying the stoichiometric characteristics of mosses and soil can provide a powerful reference for the ecological restoration and evaluation of ecosystems experiencing rocky desertification. Soil nutrients accumulate with each succession stage during natural restoration of karst rocky desertification areas. Mosses have a strong effect on improving soil nutrients in rocky desertification areas.
Article
Biology
Mona A. Andskog, Craig Layman, Jacob E. Allgeier
Summary: Artificial reefs can enhance seagrass production by increasing primary production through fertilization from aggregating fish excretion. Our long-term experiment showed that artificial reefs consistently enhanced seagrass production and maintained ecosystem-scale production despite human stressors. These findings suggest that artificial reefs can promote important ecosystem services in human-dominated ecosystems.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Article
Forestry
Xingtang Zhao, Xu Zhang, Zhang Liu, Yipin Lv, Tingting Song, Jinghong Cui, Tianchi Chen, Jianxia Li, Fansuo Zeng, Yaguang Zhan
Summary: The study found that under phosphorus and nitrogen deficiency, WC performed better than DL in various indicators, demonstrating a greater ability to absorb, transport, and utilize phosphorus and nitrogen. WC was identified as a phosphorus-efficient provenance.
Article
Electrochemistry
Akter Hossain Reaz, Hasi Rani Barai, Shimul Saha, Keya Chowdhury, Maharun Negar Mojumder, Shakhawat Hossain Firoz, Al-Nakib Chowdhury, Sang Woo Joo, Chanchal Kumar Roy
Summary: Hydrocarbon based waste materials are being used to generate activated carbons with high potential for supercapacitor applications. Carbon materials collected from diesel engine exhaust can be treated with acids to produce self-doped porous activated carbons with large specific surface areas. These materials show high specific capacitance and energy density in various electrolytes, demonstrating excellent stability in charge-discharge cycles.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Soil Science
Maud A. J. van Soest, N. John Anderson, Roland Bol, Liz R. Dixon, Philip M. Haygarth
Summary: Soil nutrient pools and soil nutrient element contents vary between catchments in the low Arctic area of southwest Greenland, likely due to the presence of muskox and grazing-associated processes. This study emphasizes the heterogeneity of Arctic landscapes and the need for ecosystem-specific research.
EUROPEAN JOURNAL OF SOIL SCIENCE
(2022)
Article
Plant Sciences
Huijun Qin, Liang Jiao, Yi Zhou, Jingjing Wu, Xichen Che
Summary: This study investigated the effects of elevation gradients on the C, N, and P content of different tissues of Qinghai spruce, and found that Qinghai spruce is more susceptible to N limitation. The N content and N:P ratio of Qinghai spruce were significantly negatively correlated with temperature, and the P content was lower at high elevation. Soil-climate interactions on the elevation gradient predominantly drove the variation in C, N, and P content and stoichiometry of Qinghai spruce trees in each tissue type. These findings are important for future forest management in coniferous tree growing regions and contribute to understanding the elevational patterns of forest ecosystem stoichiometry in arid and semiarid regions.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Environmental Sciences
Jirf Kopacek, Radek Bace, Michal Choma, Josef Hejzlar, Jirf Kana, Filip Oulehle, Petr Porcal, Miroslav Svoboda, Karolina Tahovska
Summary: Forest areas in Europe and North America are experiencing an increase in insect infestations due to accelerated climate change. A study on the mass budget of major elements in the ecosystems of two catchments revealed the impact of tree dieback and long-term accumulation/losses. The outbreak of bark beetles resulted in high tree mortality in one catchment, significantly affecting the forest. This disturbance led to increased element losses and transformed the impacted catchment into a net carbon source.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Willem Kaijser, Armin W. Lorenz, Sebastian Birk, Daniel Hering
Summary: This study presents a conceptual model on the interaction between algae, macrophytes, DIC, pH, light, N, P, and the surface water and sedimental compartment in rivers. Data analysis quantifies three connections within this concept, showing the importance of factors such as pH, chlorophyll-a, and the utilization of HCO3- by macrophytes along the DIC gradient. The results emphasize the significant impact of DIC on riverine macrophytes and suggest that river monitoring and management should consider the interaction between nutrients DIC, surface water, and sedimental compartment as important factors affecting macrophyte occurrence.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Applied
Francisco J. Garcia-Mateos, Ramiro Ruiz-Rosas, Juana Ma Rosas, Jose Rodriguez-Mirasol, Tomas Cordero
Summary: Phosphorus-containing carbon fibers prepared by electrospinning of lignin solutions exhibit excellent acid properties and catalytic activity, achieving good performance in isopropanol decomposition and other reactions.
Article
Chemistry, Applied
J. J. Ternero-Hidalgo, M. Daturi, G. Clet, P. Bazin, M. A. Banares, R. Portela, M. O. Guerrero-Perez, J. Rodriguez-Mirasol, T. Cordero
Summary: Simultaneous operando Raman and transmission FTIR spectroscopic measurements were used to study the structure-activity relationships of V-Zr-O catalysts during propane oxidative dehydrogenation. The combination of both spectroscopies allowed the identification of reaction intermediates and provided structural information about the catalyst. The results suggested a Mars-van Krevelen mechanism and showed higher activity of bridging oxygen sites than terminal V--O bonds.
Article
Chemistry, Physical
Javier Torres-Linan, Ramiro Ruiz-Rosas, Juana Maria Rosas, Jose Rodriguez-Mirasol, Tomas Cordero
Summary: A Zr-loaded P-containing biomass-derived activated carbon (ACPZr) has been found to exhibit high selectivity towards dimethyl ether (DME) in methanol dehydration reactions at 500 degrees C, with a yield of more than 20% for over 24 hours. A kinetic model was developed to account for the inhibition of water and catalyst deactivation by coke. Results showed that water had a reversible competitive adsorption effect, while coke formation could be attributed to a formaldehyde intermediate.
Article
Energy & Fuels
Jose Palomo, Miguel A. Rodriguez-Cano, Jose Berruezo-Garcia, Jose Rodriguez-Mirasol, Tomas Cordero
Summary: In this study, a structured catalyst consisting of submicrometric fibrillar ZrO2 fibers with well-defined ZSM-5 zeolite aggregates was prepared by electrospinning technique. The catalyst showed high activity for the synthesis of DME and light olefins via methanol dehydration, and it could be easily structured inside a fixed-bed reactor, overcoming the limitations of mass and heat transfer. The selectivity to DME and light hydrocarbons could be controlled by tuning the zeolite loading in the catalyst.
Article
Energy & Fuels
Heresh Rayej, Mohammad Reza Vaezi, Behzad Aghabarari, Ramiro Ruiz-Rosas, Juana M. Rosas, Jose Rodriguez-Mirasol, Tomas Cordero
Summary: This work demonstrates the preparation of oxygen reduction reaction catalysts by pyrolysis of amino acid functionalized graphene oxide, with Histidine showing promising results in enhancing capacitance, conductivity, and ORR activity.
Article
Chemistry, Applied
Sandra Pioquinto-Garcia, J. Raziel Alvarez, Alan A. Rico-Barragan, Sylvain Giraudet, Juana Maria Rosas-Martinez, Margarita Loredo-Cancino, Eduardo Soto-Regalado, Victor M. Ovando-Medina, Tomas Cordero, Jose Rodriguez-Mirasol, Nancy E. Davila-Guzman
Summary: We demonstrate the potential of metal-organic framework (MOF) composite fibers produced by electrospinning for removing D4 siloxane from gaseous solutions. The fibers are based on polyacrylonitrile (PAN) and a microporous aluminum-based MOF called DUT-4. The best dispersion on the fiber surface is achieved using coaxial electrospinning with a DUT-4:PAN ratio of 1:1.4. The Al-MOF fiber composite shows higher adsorption capacity and faster adsorption kinetics compared to individual DUT-4 crystals.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Physical
M. J. Valero-Romero, F. J. Garcia-Mateos, Freek Kapteijn, J. Rodriguez-Mirasol, T. Cordero
Summary: Cobalt-containing lignin-based fibers were synthesized for low-temperature Fischer-Tropsch synthesis. The fibers heat-treated at 500℃ showed the best catalytic performance with selectivity of 75% and 60%.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Behnam Hosseinzaei, Mohammad Jafar Hadianfard, Feridun Esmaeilzadeh, Maria del Carmen Recio-Ruiz, Ramiro Ruiz-Rosas, Juana M. Rosas, Jose Rodriguez-Mirasol, Tomas Cordero
Summary: The aim of this study was to synthesize chemically activated carbons from different agricultural residues and use them as supports for loading a Ni catalyst. The results showed that the activated carbons had considerable pore structures and the Ni/AC(PS) catalyst showed a superior catalytic activity. By raising the process temperature, the total amount of gas and hydrogen increased, and the highest total gas amount was achieved using Ni/AC(PS) at T = 550 degrees C.
Article
Polymer Science
Al Mamun, Francisco Jose Garcia-Mateos, Lilia Sabantina, Michaela Kloecker, Elise Diestelhorst, Ramiro Ruiz-Rosas, Juana Maria Rosas, Jose Rodriguez-Mirasol, Tomasz Blachowicz, Tomas Cordero
Summary: In this study, electrospun carbon fiber electrodes were prepared for use as catalysts in the oxygen reduction reaction. The results showed that these catalysts exhibited good activity and selectivity.
Article
Chemistry, Physical
Reina Kaneda, Jose Palomo, Lingjun Hu, Atsushi Urakawa
Summary: The oxidative coupling of methane (OCM) was investigated using a catalyst with a core@shell structure or a physical mixture. Microwave heating and the use of a core@shell structure were found to be essential for achieving high reaction efficiency. The presence of temperature gradients in the catalytic bed under microwave radiation correlated with the C-2 selectivity and yield.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
M. Garcia-Rollan, F. J. Garcia-Mateos, R. Ruiz-Rosas, J. M. Rosas, J. Rodriguez-Mirasol, T. Cordero
Summary: Alkalis in lignosulfonate enable the easy preparation of sustainable MgO-containing carbon catalysts by carbonization and gasification. Different carbon spheres with varied properties were obtained through different temperatures of treatment. The carbon spheres showed high selectivity to acetone as a catalyst for 2-propanol decomposition, and CO2-activated carbon spheres exhibited the highest activity and selectivity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Correction
Chemistry, Applied
Jia Liu, Juntong Dong, Xiaodan Li, Teng Xu, Zhenguo Li, Jeffrey Dankwa Ampah, Mubasher Ikram, Shihai Zhang, Chao Jin, Zhenlong Geng, Tianyun Sun, Haifeng Liu
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Seba Alareeqi, Daniel Bahamon, Kyriaki Polychronopoulou, Lourdes F. Vega
Summary: This study explores the potential application of single-atom-alloy (SAA) catalysts in bio-oils hydrodeoxygenation refining using density functional theory (DFT) and microkinetic modeling. It establishes the relationships between stability, adsorptive properties, and activity structures for bio-oil derivatives, providing guidance for the synthesis of cost-effective SAA combinations.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Bin Hu, Wen -Ming Zhang, Xue-Wen Guo, Ji Liu, Xiao Yang, Qiang Lu
Summary: This study explored the pyrolysis behaviors and mechanisms of different monosaccharides, including arabinose, galactose, galacturonic acid, and glucuronic acid. The roles of structural differences in these monosaccharides were analyzed, and it was found that glucuronic acid undergoes a special C-C bond breaking reaction during pyrolysis. The findings provide a deep understanding of the pyrolysis chemistry of hemicellulose and the role of different branches.
FUEL PROCESSING TECHNOLOGY
(2024)
Review
Chemistry, Applied
Youwei Zhi, Donghai Xu, Guanyu Jiang, Wanpeng Yang, Zhilin Chen, Peigao Duan, Jie Zhang
Summary: Hydrothermal carbonization (HTC) is an effective method for the harmless disposal of municipal sludge (MS) and offers potential applications for the obtained products. Optimizing reaction conditions, coupling with other waste materials, and combining different processes can improve the performance of HTC. Furthermore, HTC contributes to energy recovery and enhances the quality of life cycle assessment.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Jia Wang, Jianchun Jiang, Dongxian Li, Xianzhi Meng, Arthur J. Ragauskas
Summary: This study presents a scalable process for converting holocellulose and cellulosic wastes into advanced oxygen-containing biofuels with high furan, cyclic ketone, and ethanol content. By combining hydropyrolysis and vapor-phase hydrodeoxygenation using Pd/Al2O3 as a catalyst, the researchers achieved high yields and conversions. The integrated process holds great promise for biomass waste conversion into advanced biofuels.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Florian Held, Jannis Reusch, Steffen Salenbauch, Christian Hasse
Summary: The accurate prediction and assessment of soot emissions in internal combustion engines are crucial for the development of sustainable powertrains. This study presents a detailed quadrature-based method of moments (QMOM) soot model coupled with a state-of-the-art flow solver for the simulation of gasoline engines. The model accurately describes the entire cause-and-effect chain of soot formation, growth and oxidation. Experimental validation and engine cycle simulations are used to identify the root cause of observed soot formation hotspots.
FUEL PROCESSING TECHNOLOGY
(2024)