Article
Engineering, Environmental
Tao Fu, Xiaobo Gong, Jinrui Guo, Zhao Yang, Yong Liu
Summary: The study successfully demonstrated the efficient degradation of high concentration 4-chlorophenol using a novel catalytic peroxide oxidation system, providing a new method and strategy for the treatment of refractory chlorophenols wastewater.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Svetlana A. Yashnik, Oxana P. Taran, Tatjana A. Surovtsova, Artemiy B. Ayusheev, Valentin N. Parmon
Summary: Cu-ZSM-5 catalysts showed better decoloration efficiency compared to Fe-ZSM-5 catalysts in catalytic wet peroxide oxidation of Rhodamine 6G. The effectiveness of Cu-ZSM-5 catalysts was affected by copper loadings, Si/Al ratio, structure of copper species, and initial pH.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Narasimharao Katabathini, Islam Hamdy Abd El Maksod, Mohamed Mokhtar
Summary: In this study, Cu-SiO2-pil-ile and Cu-SiO2-pil-mag catalysts showed high efficiency in decomposing NO at high temperatures, achieving high NO conversion rates and N-2 selectivity. Various analytical methods revealed that the different metal oxides led to catalysts with distinct pore structures and acidic sites. The synergism between redox centers was identified as the major reason for the superior performance of the catalysts in NO decomposition.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Chemistry, Physical
Angela Andrea Maggio, Maria Eugenia Roca Jalil, Jhonny Villarroel-Rocha, Karim Sapag, Miria Teresita Baschini
Summary: This study used pillared clays to remove ciprofloxacin from aqueous media and investigated the influence of different drying methods on the properties of the materials. The results showed that pillared clays have good adsorption performance and exhibit differences under different pH values and drying methods.
APPLIED CLAY SCIENCE
(2022)
Article
Multidisciplinary Sciences
Timothy J. Shaw, George W. Luther, Richard Rosas, Veronique E. Oldham, Nicole R. Coffey, John L. Ferry, Dewamunnage M. C. Dias, Mustafa Yucel, Aubin Thibault de Chanvalon
Summary: Historically, the production of reactive oxygen species (ROS) in the ocean has been attributed to photochemical and biochemical reactions. However, hydrothermal vents emit globally significant inventories of reduced Fe and S species that react rapidly with oxygen in bottom water, serving as a previously unmeasured source of ROS. The Fe-catalyzed oxidation of reduced sulfur species in hydrothermal vent plumes in the deep oceans supports the abiotic formation of ROS at concentrations 20 to 100 times higher than those in surface waters. This plume-generated ROS can alter refractory organic molecules in seawater and potentially affect global ocean carbon inventories.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Chemistry, Applied
Natalia Bueno, Alejandro Perez, Rafael Molina, Sonia Moreno
Summary: A Colombian bentonite was successfully pillared with Al, Al-Fe, Al-Cu and Al-Fe-Cu polyhydroxications in solid state. The effect of the Fe and Cu content on the physicochemical properties of the pillared bentonite was evaluated. The optimized conditions were used to compare the catalytic performance of the catalysts, and pillared clay with AlFeCu10 showed the best performance.
Article
Engineering, Environmental
Yi Yang, Minyi Liu, Xintong You, Ying Li, Haowen Lin, J. Paul Chen
Summary: Treatment of organic wastewater using catalytic wet peroxide oxidation (CWPO) is important. A new bimetallic Fe-Cu-CNT catalyst was developed and optimized for efficient treatment. The catalyst showed better performance under low pH, high MB concentration, and moderate temperature conditions. Hydroxyl radicals played a crucial role in the treatment process.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Polymer Science
Eniko Gyori, Adam Kecskemeti, Istvan Fabian, Mate Szarka, Istvan Lazar
Summary: Metal complexes of substituted porphyrins can be covalently bonded to a hydrophilic silica aerogel matrix, and these catalysts can effectively mineralize phenol and chlorophenols with hydrogen peroxide under neutral conditions. However, the catalytic activity of the aerogel catalysts gradually decreases over time, which limits their practical applications.
Article
Engineering, Chemical
Shuaihui Jia, Ge Pu, Weicheng Xiong, Pengcheng Wang, Jie Gao, Cong Yuan
Summary: The study found that 1% Cu-1% Fe/TiO2 is the optimal catalyst for simultaneous removal of NO and SO2, with removal efficiency of 93.9% for NOx and 100% for SO2 under the optimal conditions. The generation of sulfate species on the catalysts leads to the decrease of surface oxygen vacancies, resulting in the reduction of NOx removal. Cu doping can improve the activity of the catalyst by increasing surface oxygen vacancies and inhibiting the formation of sulfates to enhance the sulfur resistance of catalysts.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Lourdes Hurtado, Osmin Aviles, Sharon Brewer, Kingsley K. Donkor, Rubi Romero, Rosa Maria Gomez-Espinosa, Oscar Alvarado, Reyna Natividad
Summary: This study investigated the catalytic activity of Al/Cu interlayered pillared clays for the degradation and mineralization of paracetamol. The results showed that the Al/Cu pillared clays could completely remove paracetamol without the need for acidic conditions or high catalyst concentrations, and exhibited a high mineralization rate. The study also proposed a reaction pathway for the oxidation of paracetamol molecules and assessed the stability and reusability of the catalyst.
Article
Environmental Sciences
M. S. Kalmakhanova, A. N. Nyrlybayeva, G. A. Seitbekova, S. M. Naurzkulova, J. L. Diaz de Tuesta, H. T. Gomes
Summary: The constant development of technological processes aggravates pollution problem and requires new (and/or improved) treatment methods and catalytic materials. The use of natural clays in the synthesis of low cost pillared clays for oxidation technologies in wastewater treatment is relevant from an environmental and sustainable perspective. This study used inexpensive natural clays from different regions of Kazakhstan to prepare pillared clays for the catalytic oxidation of organic pollutants. Zr-pillared clay from the Akzhar region achieved high conversions of TOC (85%) and 4-NP (100%).
GLOBAL NEST JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Meiyun Feng, Zhiqiang Xu, Xue Bai, Kuangfei Lin, Meng Zhang
Summary: In this study, a PB@Fe3O4-CaO2 nanocomposite was synthesized for the efficient adsorption and degradation of trichloroethylene. The increase of pH and the presence of inorganic anions and cations had a negative impact on the removal efficiency of TCE. This research provides a new material for the efficient removal of trichloroethylene.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Chemistry, Physical
Min Sik Kim, Gun Sik Yang, Eun Duck Park
Summary: In this study, the effects of Cu species in selective oxidation of methane into methane oxygenates using H2O2 in water were investigated. The Cu-promoted Fe/ZSM-5 catalyst showed enhanced methanol selectivity. The preparation method significantly influenced the catalyst performance, with the ion-exchange method being the most effective. However, leaching of Cu species was observed during the reaction, which could impact the quantification of formic acid.
Article
Environmental Sciences
Lalitha Gnanasekaran, Devaraj Manoj, Saravanan Rajendran, F. Gracia, A. A. Jalil, Wei-Hsin Chen, Matias Soto-Moscoso, M. A. Gracia-Pinilla
Summary: This study focuses on the treatment of industrial effluent, specifically the usage of NiO photocatalysts. Two types of NiO (green and black) were synthesized using different methods and characterized. The black NiO with Ni2O3 showed higher degradation efficiency for 4-chlorophenol under visible light compared to green NiO.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Organic
Cheng-yi Chen, Zhichao Lu, Thomas Scattolin, Chengsheng Chen, Yonghong Gan, Mark McLaughlin
Summary: A concise, transition-metal and protection-free synthesis of adagrasib (MRTX849), a novel KRASG12C inhibitor drug, was achieved using two sequential SNAr reactions to introduce chiral building blocks to the tetrahydropyridopyrimidine core. Extensive reaction optimization led to a robust, transition-metal-free oxidation of the sulfide intermediate. The use of a suitable leaving group at the 4-OH position facilitated a facile SNAr displacement to introduce the chiral piperazine, resulting in a five-step, chromatography-free synthesis with improved efficiency.
Article
Agricultural Engineering
Huanhuan Ma, Ian Beadham, Wenquan Ruan, Changbo Zhang, Yun Deng
Summary: The study found that adding amino acid-derived ionic liquids can significantly improve the quality of compost, increasing levels of humus and total nitrogen concentrations. Compared to the control group without this additive, the compost with the additive showed higher concentrations.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Environmental
Weijie Xue, Changbo Zhang, Yongchun Huang, Changrong Wang, Xin Zhang, Zhongqi Liu
Summary: Rice plants grown in paddy fields with Cd content of 0.3-1.5 mg kg(-1) had Cd quantities in mots and straws 2-7 times higher than that in topsoil. Planting low-Cd-accumulating (LCA) cultivar reduced hazard quotients for consumers, but had similar ecological risks as high-accumulating (HCA) cultivars. Insoluble Cd content in nodes linearly increased with soil Cd content, companied by significant decline of certain amino acids.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Baiyu Liu, Xuefeng Hu, Junhan Yang, Chen Yang, Yao Huang
Summary: In this study, direct Z-scheme BiOBr/CuI heterojunctions were successfully synthesized via a simple solvothermal method. The photocatalytic activity of the BiOBr/CuI composite catalysts was evaluated and showed higher performance than the pure components, with BiOBr/CuI-1 : 0.8 exhibiting the best photocatalytic performance.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Shuangyue Liu, Lin Fu, Changbo Zhang, Jiawei Deng, Weijie Xue, Yun Deng
Summary: This study investigated the effect of exogenous application of chlorinated amino acetic acid on cadmium transport characteristics in rice seedlings. The results showed that the application of chlorinated amino acetic acid inhibited cadmium absorption in shoots and roots of rice seedlings, and the majority of cadmium was found in the cell wall. Furthermore, chlorinated amino acetic acid significantly increased the manganese content in shoots and the calcium content in roots of rice seedlings, and also enhanced the synthesis of aspartic acid, glutamic acid, and cysteine. These findings provide a theoretical basis for the development of environmentally friendly Cd-lowering foliar fertilizer for rice.
Article
Environmental Sciences
R. Ranjith, Natchimuthu Karmegam, Murad Alsawalha, Xuefeng Hu, K. Jothimani
Summary: The ternary CdS/BiVO4/g-C3N4 (CBG) hybrid semiconductor photocatalyst was synthesized via a hydrothermal technique and characterized using various techniques. The CBG hybrid semiconductor exhibited excellent photocatalytic activity for the degradation of Methylene Blue (MB) aqueous dye under visible light, with a degradation rate of about 94.5% after 120 minutes. The enhanced photocatalytic activity can be attributed to the construction of heterojunctions among g-C3N4, CdS, and BiVO4, which improves charge transfer efficiency.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Xin Zhang, Weijie Xue, Changbo Zhang, Changrong Wang, Yongchun Huang, Yanting Wang, Liangcai Peng, Zhongqi Liu
Summary: The study found that the increase in soil cadmium levels led to a significant increase in the ratios between cadmium and 7 essential elements in plant cells. Cadmium accumulation resulted in an increase in calcium, manganese, iron, and zinc content, as well as the expression levels of calcium channel genes and a decrease in glutamate content and expression levels of glutamate receptor channels in rice. The mutant fc8 exhibited higher calcium, iron, zinc content, and expression levels of glutamate receptor channels compared to its wild type, while the ratios between cadmium and essential elements were lower in fc8 than in the wild type.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Physical
Chen Yang, Xuefeng Hu, Yaxing Bai, Beichuan Cai, Yujie Li
Summary: This study reports a simple and low-energy synthesis scheme for improving the photocatalytic performance of g-C3N4 by synthesizing Fe single-atom anchored carbon nitride. The synthesized Fe-SACs/g-C3N4 showed high activity and stability for the degradation of MBT, with 99% degradation achieved within 35 minutes under visible light irradiation. The Fe single atoms and carbon nitride synergistically enhanced the in-plane separation and transfer of carriers, leading to the generation of superoxide radicals.
Article
Chemistry, Multidisciplinary
Liwei Hou, Yanan Wang, Fan Zhou, Shuangyue Liu, Lin Fu, Lei Wang, Changbo Zhang, Weijie Xue
Summary: In this study, highly crystalline nano-sized LaFeO3 was synthesized by a non-aqueous benzyl alcohol route, and it showed excellent degradation performance towards tetracycline in a coupled persulfate/photocatalytic process. The specific surface area and small crystallite size of the obtained materials contributed to the enhanced degradation efficiency. The effects of key reaction parameters were investigated, and the catalyst stability and toxicity were also discussed. Surface sulfate radicals were identified as the major reactive species during the oxidation process. This study provided a new insight into nano-constructing a novel perovskite catalyst for the removal of tetracycline in water.
Article
Environmental Sciences
Yun Deng, Sheng Wang, Ian Beadham, Xin Gao, Mengmeng Ji, Guang Wang, Changbo Zhang, Wenquan Ruan
Summary: The Cd-removing ability of 15 different amino acid-based ionic liquids as soil washing agents was studied, and the glycine hydrochloride ([Gly][Cl]) was found to be the most effective in removing Cd. The washing process did not significantly alter the morphology of the soil. After rinsing the soil with water and adjusting the pH, the germination index and growth of rice plants increased significantly. These experiments demonstrate the potential of amino acid-derived ionic liquids as promising soil-washing agents for Cd-contaminated paddy soil.
Article
Agricultural Engineering
Yun Deng, Mengtian Liu, Tigao Fang, Huanhuan Ma, Ian Beadham, Wenquan Ruan, Shuo Wang, Xiaokai Zhang, Changbo Zhang
Summary: This study proposes a novel method of enhancing methane production from anaerobic digestion by using an amino acid-derived ionic liquid, glycine hydrochloride ([Gly][Cl]), as an exogenous additive. The study found that after 40 days of digestion with 5% [Gly][Cl], the cumulative methane production was 73% higher than the control group. The addition of [Gly][Cl] increased bacterial diversity, decreased archaeal diversity, and stimulated the activities of protein-hydrolyzing and acid-producing bacteria.
BIORESOURCE TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Qiaoting Chen, Minling Gao, Qiyu Miao, Ling Xiao, Zhongyang Li, Weiwen Qiu, Zhengguo Song
Summary: The focus of current environmental remediation research is to reduce cadmium pollution in aquatic environments using high-efficiency adsorption materials. This study explored the cadmium adsorption mechanisms of six types of biochar, with SCDBC showing the highest adsorption capacity. SCDBC can be used as a highly efficient adsorbent for removing cadmium from aquatic environments.
Article
Engineering, Environmental
Zulqarnain Haider Khan, Zhongyang Li, Minling Gao, Md. Shafiqul Islam, Ling Xiao, Weiwen Qiu, Zhengguo Song
Summary: A novel magnesium-manganese modified biochar composite (Mg/Mn@BC) was prepared for simultaneous elimination of Cd(II) and As(III) from water. The Langmuir sorption capacity of Mg/Mn@BC for As(III) and Cd(II) in the mixed sorption system was 164 and 316 mg g-1, respectively, higher than that in the single adsorption system (75 and 295 mg g-1). The results suggest that Mg/Mn@BC composite has the potential to be used in wastewater treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Minling Gao, Linsen Bai, Ling Xiao, Qiaoting Chen, Weijie Fan, Zhengguo Song
Summary: Microplastic and antibiotic pollution is a global issue. This study investigated the combined effects of polystyrene nanoplastics (PS NPs) and tetracycline (TC) on wheat seedlings. The results showed that TC can be absorbed by the roots and accumulate in the shoots, leading to inhibited photosynthesis and reduced dry weight of wheat. The presence of PS NPs significantly increased TC content and aggravated the negative effects, indicating the potential risk of their combined effects on plants and human health.
ENVIRONMENTAL SCIENCE-NANO
(2023)
Article
Engineering, Environmental
Youming Dong, Minling Gao, Weiwen Qiu, Ling Xiao, Zimin Cheng, Hongchang Peng, Zhengguo Song
Summary: This study investigated the mechanisms by which microplastics affect soil sulfur mineralization. The results showed that the type, concentration, and size of microplastics are the main factors influencing sulfur mineralization. Additionally, microplastics directly alter the structure and activities of soil enzymes.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Chemistry, Physical
Nadine J. Kanik, Artur Kuligiewicz, Jeffrey T. Cullen
Summary: This study examined the effects of different pre-treatments on the structural H-isotope composition of clay minerals. The results showed that different pre-treatments had varied impacts on different clay minerals, and the choice of pre-treatment should be based on the specific properties and mineralogy of the samples.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Lorenzo Lisuzzo, Giuseppe Cavallaro, Stefana Milioto, Giuseppe Lazzara
Summary: This study proposes Pickering emulsions based on wax and halloysite clay nanotubes for coating silk sutures to increase their loading capacity towards eosin. The presence of halloysite/wax microspheres on the surface of silk sutures has also been explored for controlled release of hydrophobic drugs. The influence of the coating on the thermal and mechanical properties of the sutures has been studied using various techniques. In conclusion, the wax/halloysite Pickering emulsions can successfully generate hydrophobic microdomains on the surface of silk sutures, leading to enhanced flexibility and improved loading capacity towards eosin.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Bruna F. Alves, Rita C. P. Nunes, Luiz C. Bertolino, Elizabete F. Lucas
Summary: Operational problems in the oil industry caused by the precipitation of paraffins can be prevented by using polymeric additives. This article evaluates the use of polymeric nanocomposites as pour point reducers in different types of crude oil and finds that they are more efficient than pure poly(ethylene-covinyl acetate) (EVA) in reducing the pour point. The nanocomposites also modify the wax crystals and reduce the viscosity of the oil samples.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
K. A. Daniels, C. C. Graham, A. C. Wiseall, J. F. Harrington, P. Sellin
Summary: Geological storage with clay buffer is widely preferred for removing hazardous radioactive waste. The impact of fluid salinity and void space on the swelling behavior of barrier bentonites was examined through experiments. The findings suggest that clay swelling is suppressed at higher salinities, which affects the void-filling process.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
N. Werling, A. Kuligiewicz, A. Steudel, R. Schuhmann, F. Dehn, K. Emmerich
Summary: Thermal treatment of clay minerals can be used to produce building materials and environmentally friendly binders. This process involves dehydration, dehydroxylation, breakdown of structure, and recrystallization of high temperature phases. Rehydration and rehydroxylation are important factors to consider for geopolymers and SCM.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Xuan Wang, Hao Ding, Zhuoqun Xu, Jianmeng Zhang, Yanbin Yao
Summary: Rutile nano-TiO2 was loaded onto the surface of sericite to prepare sericite-rutile composite particles, which were then modified with HDTMS and sprayed onto the substrates to form sericite-rutile/HDTMS composite coatings with UV shielding and superhydrophobic self-cleaning properties. The coating exhibited good UV shielding rate and remained superhydrophobic after UV irradiation. The hierarchical structure of the sericite-rutile composite and the low surface energy of HDTMS contributed to the superhydrophobicity and UV shielding effect of the coating.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Kailang Sun, Taojun Zhang, Jie Zhou, Yonghong Liu, Minfeng Zeng, Zhen Yang, Ruokun Feng, Xiaorong Ren, Peng Zhang, Baoyi Wang, Xingzhong Cao
Summary: Chitosan-Pd0 nano particles encapsulated in Al, Co-pillared montmorillonite nanocomposites were successfully synthesized using a facile one-pot heat treatment method. The Al, Co pillaring effectively expanded the surface area and generated numerous mesopores in the interlayer space of the MMt. The resultant nanocomposite exhibited similar high comprehensive catalytic performances as the one prepared by the regular divided-multistep method. The encapsulation of CS chains and doping of Co in the Al pillaring also contributed to the improved catalytic performance.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Nathalie Fagel, Isabel Israde-Alcantara, Reza Safaierad, Marttiina Rantala, Sabine Schmidt, Gilles Lepoint, Pierre Pellenard, Nadine Mattielli, Sarah Metcalfe
Summary: Environmental conditions significantly influence clay minerals, and studying clay sediments in tropical lakes can provide valuable insights into past environmental conditions. In this study, multiproxy records from sediment cores of three crater lakes in central Mexico were analyzed. The results showed that disordered kaolinite, formed through hydrolysis and hydrothermal alteration, was the predominant mineral in the sediments. The abundance of kaolinite varied in relation to organic carbon and organic matter-related elements, and showed opposite trends with lithogenic elements. Geochemical data suggested that the increase in kaolinite abundance is linked to the formation of organo-mineral aggregates and lake level changes in closed basins.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
M. J. Martin-Alfonso, A. Mejia, F. J. Martinez-Boza, P. Partal
Summary: The drilling industry is facing new challenges to develop eco-friendlier drilling fluids. Organic modified sepiolite dispersed in oil can be an excellent additive with suitable rheological properties. This study investigated the effect of alkyl ammonium modifiers on the microstructure and rheological properties of sepiolite-vegetable oil dispersions under high-temperature and high-pressure conditions.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Weiquan Zhan, Siyuan Yang, Shenxu Bao, Liuyi Ren, Cheng Liu
Summary: The interaction between talc and the depressor CMC was investigated through molecular dynamics simulation and density functional theory calculation. It was found that CMC showed stronger adsorption on the edge plane of talc due to enhanced interactions with polar groups and water molecules. The study also revealed specific interactions between H atoms in CMC and O atoms in the edge plane, as well as between O atoms in CMC and Si, Mg atoms in the edge plane. Hydration shells on the basal and edge planes of talc were examined to explain the phenomenon.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Pierre Dramou, Yiyang Sun, Xu Ni, Fangqi Wang, Hua He
Summary: In this study, a magnetic nanocomposite was prepared and used for the separation of rutin from real samples through magnetic solid phase extraction (MSPE). The nanocomposite exhibited high specific surface area, chemical and thermal stability, water solubility, and easy separation in aqueous solution. Characterization and experiments confirmed the successful synthesis and efficient enrichment ability of the nanocomposite.
APPLIED CLAY SCIENCE
(2024)