Article
Chemistry, Multidisciplinary
Christina Wartmann, Shiny Nandi, Joerg-Martin Neudoerfl, Albrecht Berkessel
Summary: The titanium complex of the cis-1,2-diaminocyclohexane (cis-DACH) derived Berkessel-salalen ligand is a highly efficient and enantioselective catalyst for the asymmetric epoxidation of terminal olefins with hydrogen peroxide. This study also found that this epoxidation catalyst can effectively perform the highly enantioselective hydroxylation of benzylic C-H bonds with hydrogen peroxide. A newly optimized nitro-salalen Ti-catalyst showed the highest efficiency ever reported for asymmetric catalytic benzylic hydroxylation, with enantioselectivities of up to 98% ee, while overoxidation to ketone is marginal. The novel nitro-salalen Ti-catalyst also exhibited enhanced epoxidation efficiency, with a conversion of 1-decene to its epoxide in 90% yield and 94% ee at a catalyst loading of only 0.1mol-%.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Polymer Science
Chunlian Liu, Peipei Huang, Wei Wang, Miao Tan, Fangbao Fu, Yunhui Feng
Summary: In this study, composite nanomaterials of TiO2 nanotube arrays (TiO2 NTAs) and polyaniline (PANI) were successfully prepared on titanium sheets using an anodic oxidation electrochemical method. The TiO2 NTA/PANI composite materials exhibited excellent UV photosensitivity and responsiveness, as well as good stability and reproducibility. The p-n heterostructure formed inside the composites hindered the recombination of photogenerated electron-hole pairs and improved their utilization of UV light. This work provides a theoretical basis for the application of metal oxides in UV photodetectors, which is important for the development of UV photodetectors.
Article
Chemistry, Physical
Raimondo Germani, Marzia Bini, Simona Fantacci, Federica Simonetti, Matteo Tiecco, Eleonora Vaioli, Tiziana Del Giacco
Summary: The study indicated that tetraalkylammonium bromide surfactants significantly enhance the efficiency of TiO2 photocatalytic degradation of dyes, with various factors such as initial pH, dye pK's, water type, and light source influencing the process. The hydrophobic and electrostatic interactions between dye and surfactant/TiO2 in different forms of aggregation play a crucial role in explaining the surfactant effect on the photodegradation process.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Environmental Sciences
A. Gouran, M. Mohadesi, M. Falsafi
Summary: In this study, a rotating microreactor was used to remove methylene blue and methyl orange from aqueous solutions by implementing an advanced oxidation process. Through experimental design, optimal operating conditions were determined, resulting in removal rates of 99.83% for methylene blue and 68.69% for methyl orange.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Leonardo Romero-Martinez, Ignacio Rivas-Zaballos, Javier Moreno-Andres, Ignacio Moreno-Garrido, Asuncion Acevedo-Merino, Enrique Nebot
Summary: The study found that adding hydrogen peroxide or peroxymonosulfate salt can improve the UV treatment of ballast water, reducing the UV doses required for compliance with BWMC standards.
MARINE POLLUTION BULLETIN
(2021)
Article
Nanoscience & Nanotechnology
Kun Wei, Baoping Li, Chengshi Gong, Ziran Zhu, Yu Zhang, Menghan Liu, Peiling Ren, Xiaojun Pan, Youqing Wang, Jinyuan Zhou
Summary: A new PEC UV detector structure is introduced in the paper, which solves the UV filtering problem caused by the traditional structure through the design of special electrodes and deposition of barrier layers, achieving good performance.
Article
Green & Sustainable Science & Technology
David C. Vuono, Johan Vanneste, Linda A. Figueroa, Vincent Hammer, Fredy N. Aguilar-Huaylla, Aaron Malone, Nicole M. Smith, Pablo A. Garcia-Chevesich, Hector G. Bolanos-Sosa, Francisco D. Alejo-Zapata, Henry G. Polanco-Cornejo, Christopher Bellona
Summary: The study aimed to optimize the use of UV radiation coupled with H2O2 to enhance the removal of cyanide in gold processing effluents. Higher UV intensity and H2O2 accelerated cyanide degradation, while a lower concentration effluent demonstrated faster removal rates compared to highly concentrated effluent._testing TiO2 photocatalyst with low stoichiometric ratios of CN-:H2O2 showed significant improvement in degradation rate within a short period of time.
Article
Green & Sustainable Science & Technology
Wei Yang, Zhifei Dou, Yangxian Liu, Yongchun Zhao, Renkun Huang
Summary: Seaweed-based biochars derived from pyrolysis waste were utilized to reduce elemental mercury emissions. An environmentally-friendly UV/hydrogen peroxide oxidation modification method was used to enhance the adsorption of elemental mercury by seaweed-based biochars. The modified seaweed biochars exhibited improved mercury capture performance. This research provides new insights into the green modification of biochar and the development of clean mercury removal adsorbents.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Physical
Guoqiang Cao, N. Aaron Deskins, Nan Yi
Summary: The study demonstrates that nitrogen-doped titanium dioxide can enhance the catalytic performance of copper-titanium dioxide catalysts, especially in the carbon monoxide oxidation reaction. The different nitrogen modifications on rutile and anatase titanium dioxide phases lead to diverse reaction outcomes.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Multidisciplinary
Min Huang, Shuyi Zhang, Bo Wu, Xing Yu, Yongping Gan, Tiejun Lin, Fei Yu, Yuhan Sun, Liangshu Zhong
Summary: A tunable band structure W-doped TiO2 photocatalyst was designed for the photocatalytic oxidation of methane to C-1 oxygenates using O-2 at low temperature. The W-doping improved the photocatalytic performance, achieving a liquid oxygenates productivity of 12.2 mmol g(-1) and a selectivity of 99.4%. Additionally, the selectivity of COx was effectively decreased from 21.2% to 0.6%. W-doping not only enhanced light absorption but also promoted the separation of photo-generated carriers, improving methane conversion.
Article
Chemistry, Multidisciplinary
Piao Zhu, Yinying Pu, Min Wang, Wencheng Wu, Huanlong Qin, Jianlin Shi
Summary: By reducing the concentration of GSH, the MnOOH nanocatalyst can simultaneously catalyze the autoxidation of GSH and peroxidase-like reaction to promote GSH depletion and the decomposition of H2O2, generating abundant ROS such as hydroxyl radical (center dot OH) and achieving highly effective catalytic therapeutic efficacy. The transformed endogenous antioxidant into oxidant may open a new avenue for the development of antitumor nanocatalytic medicine. Additionally, the released Mn2+ can activate the cGAS-STING pathway, promoting macrophage maturation and M1-polarization, and enhancing the innate immunotherapeutic efficacy.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Analytical
Qiu-Yue Cheng, Ting Wang, Jun Hu, Hong-Yuan Chen, Jing-Juan Xu
Summary: Visible-light-mediated heterogeneous photocatalysis is a promising method for organic transformations. However, accurately detecting and identifying photogenerated species, especially short-lived radical intermediates, remains challenging. In this work, a hybrid ion emitter integrated with a pico-liter heterogeneous photocatalytic reactor was developed for the rapid identification of transient radical intermediates produced under visible-light irradiation. This novel coupling device provides a powerful tool for exploring complex heterogeneous photochemical processes and their ultrafast initial transformations.
ANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Environmental
Prapatsorn Kaewkam, Apichaya Kanchanapaetnukul, Janista Khamyan, Nattapon Phadmanee, Kun-Yi Andrew Lin, Krisana Kobwittaya, Sanya Sirivithayapakorn
Summary: The study investigated the effects of TiO2 phases and UV light on photodegradation of LDPE films, finding that using TiO2-900°C with UV-C light resulted in the highest degradation efficiency. Analysis of crystal structure and elemental composition provided insights into the degradation mechanism of LDPE films.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Cheng Ye, Xiaoyan Ma, Jing Deng, Xueyan Li, Qingsong Li, Andrea M. Dietrich
Summary: Research shows that UV/H2O2 process is more effective in degrading saccharin, while UV/PS process is better suited for degrading organic pollutants. Both processes promote the generation of disinfection by-products, but prolonging pretreatment time is beneficial in reducing their formation.
Article
Chemistry, Inorganic & Nuclear
Nathan Coutard, Jonathan M. Goldberg, Henry U. Valle, Yuan Cao, Xiaofan Jia, Philip D. Jeffrey, T. Brent Gunnoe, John T. Groves
Summary: This study reports the photo-driven oxidations of alkanes in trifluoroacetic acid using Fe(III) sources as catalyst precursors and dioxygen as the terminal oxidant. Under optimized conditions, methane can be converted to methyl trifluoroacetate with over 50% selectivity. It is shown that methyl trifluoroacetate is stable under catalytic conditions, preventing the formation of overoxidized products through secondary oxidation.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Ceramics
Juan Luis Pantoja-Pertegal, Antonio Diaz-Parralejo, Antonio Macias-Garcia, J. Sanchez-Gonzalez, Eduardo M. Cuerda-Correa
Summary: This work focuses on the design, preparation, and characterization of YSZ coatings using the EPD technique. The study optimized the electrophoretic characteristics of YSZ suspensions, analyzed the correlation between experimental results and theoretical values, and achieved optimal coating results by thermal treatment of stainless steel substrates.
CERAMICS INTERNATIONAL
(2021)
Editorial Material
Environmental Sciences
Joaquin R. Dominguez, Juan Garcia, Silvia Alvarez
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Physical
Luis M. S. Silva, Maria J. Munoz-Pena, Joaquin R. Dominguez-Vargas, Teresa Gonzalez, Eduardo M. Cuerda-Correa
Summary: In this study, a commercial resin with developed internal pore structure was used to adsorb four parabens, and a phenomenological transient adsorption model was proposed and validated. By fitting the model to data, parameters and equilibrium constants were calculated, showing consistency between adsorbed amount and Langmuir equilibrium constants. The results indicate that the model has high predictive accuracy.
SURFACES AND INTERFACES
(2021)
Editorial Material
Environmental Sciences
Joaquin R. Dominguez, Avelino Nunez-Delgado, Juan Garcia-Rodriguez
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Joaquin R. Dominguez, Teresa Gonzalez, Sergio Correia, Eva M. Dominguez
Summary: This study investigated the sonochemical oxidation of neonicotinoids using high-frequency ultrasound, determining optimal operating parameters and examining the oxidation mechanism and environmental conditions' influence on the reaction.
ENVIRONMENTAL RESEARCH
(2021)
Article
Environmental Sciences
G. Donoso, Joaquin R. Dominguez, T. Gonzalez, S. Correia, Eduardo M. Cuerda-Correa
Summary: The degradation of tartrazine was investigated using electrochemical and sonochemical oxidation processes. The total removal of tartrazine, as well as the removal of COD and TOC, were achieved by these processes. The kinetics showed that the electrochemical process was three times faster, but the energy costs were similar at long treatment times.
ENVIRONMENTAL RESEARCH
(2021)
Article
Environmental Sciences
Joaquin R. Dominguez, Teresa Gonzalez, Sergio Correia
Summary: This study investigated the electrochemical degradation of four common neonicotinoid pesticides in different natural surface waters, finding that the most influencing variable was the current density. The experiments showed that sulphate electrolyte was optimal for three of the pesticides, while sodium chloride was more effective for one pesticide. The initial pH of the solution did not significantly influence the process within a specific range.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Chemical
Miguel Minhalma, Maria Norberta de Pinho, Joaquin R. Dominguez
Summary: The study found that soft ozonation pretreatment can reduce phenolic content in wastewater, decrease membrane fouling and concentration polarization, and increase permeate fluxes and mass transfer coefficients.
Article
Food Science & Technology
Maria Calderon-Martin, Esperanza Valdes-Sanchez, Maria F. Alexandre-Franco, M. Carmen Fernandez-Gonzalez, Mar Vilanova de la Torre, Eduardo M. Cuerda-Correa, Vicente Gomez-Serrano
Summary: Activated carbons prepared from vine-shoots have been demonstrated to be effective fining agents for wines, able to mitigate quality issues such as browning and unpleasant aromas. Physical activation showed improved capacity in removing polyphenolic compounds and enhancing chromatic characteristics.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Avelino Nunez-Delgado, Joaquin R. Dominguez, Yaoyu Zhou, Marco Race
Summary: The Editors of the Virtual Special Issue on New Trends on Green Energy and Environmental Technologies, with Special Focus on Biomass Valorization, Water and Waste Recycling, present summarized data corresponding to the accepted submissions and additional comments regarding the thematic of the VSI. A total of 83 manuscripts were received, with the highest quality ones accepted after peer-reviewing. The resulting set of very interesting papers contributes to increasing knowledge on the matter and is deemed useful for researchers and society as a whole.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Thermodynamics
Ricardo N. Coimbra, Marco Custodio, Eduardo M. Cuerda-Correa, Moonis Ali Khan, Ricardo Calado, Ana Lillebo, Marta Otero
Summary: This study evaluated the bioenergy production potential of Halimione portulacoides for the phytoremediation of nutrient-rich simulated wastewater. The study found that the roots and canes of Halimione portulacoides have high carbon content and low ash content, making them suitable for bioenergy production. The nutrient treatments did not have a significant impact on bioenergy production or biomass characteristics. This suggests that Halimione portulacoides can be used as a source of bioenergy in water phytoremediation.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Environmental Sciences
Maria F. Alexandre-Franco, Carmen Fernandez-Gonzalez, Gemma Reguero-Padilla, Eduardo M. Cuerda-Correa
Summary: This study investigates the use of olive-tree leaves extract to recover precious metals from scrap PCBs. The results show that combining the extract with sodium borohydride and iron can achieve a total recovery of silver, copper, chromium, and tin.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Joaquin R. Dominguez, Teresa Gonzalez, Sergio E. Correia, Maria M. Nunez
Summary: Electrochemical oxidation using a boron-doped diamond anode (EO-BDD) was investigated for the removal of emerging contaminants in wastewater treatment plant effluents (WWTPe). The study demonstrated high efficiency in removing neonicotinoid pesticides and other emerging pollutants. The results suggest the potential for water regeneration and reuse in high-quality applications.
