Article
Engineering, Environmental
Chen-Wei Zheng, Yi-Hao Luo, Yen-Jung Sean Lai, Zehra Esra Ilhan, Aura Ontiveros-Valencia, Rosa Krajmalnik-Brown, Yan Jin, Haiwei Gu, Xiangxing Long, Dandan Zhou, Bruce E. Rittmann
Summary: Traditional research methods for the biodegradation of emerging organic pollutants are slow and labor-intensive, but new metagenome, metatranscriptome, and metabolome technologies offer a faster and more efficient approach. By integrating these three "omics" approaches, it is possible to link gene abundance and expression with the biotransformation of the pollutants and the formation of metabolites. In this study, the tri-omics approach was used to study the biotransformation pathways of cetyltrimethylammonium bromide (CTAB) under aerobic conditions. The analysis revealed three parallel first-step oxygenation pathways and identified key intermediates and enzymes involved in the biotransformation of CTAB. This study highlights the potential of the tri-omics approach for future research on complex organic biodegradation by microbial communities.
Article
Chemistry, Physical
S. Swathi, R. Yuvakkumar, P. Senthilkumar, G. Ravi, Dhayalan Velauthapillai
Summary: This study successfully synthesized pristine and cationic surfactant assisted tungsten sulfide for hydrogen evolution reaction. The cationic surfactant assisted tungsten sulfide showed high catalytic activity and stability, making it suitable for large-scale applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Aiganym Abduraimova, Anara Molkenova, Assem Duisembekova, Tomiris Mulikova, Damira Kanayeva, Timur Sh. Atabaev
Summary: The study demonstrated a highly efficient antibacterial nanocomposite by attaching silver nanoparticles to the surface of cetyltrimethylammonium bromide (CTAB)-loaded mesoporous silica nanoparticles. The improved antibacterial activity of the prepared nanocomposite can be attributed to the even distribution of non-aggregated silver nanoparticles per volume unit and the presence of CTAB in the nanocomposite pores.
Article
Chemistry, Physical
Gabriela Correa Carvalho, Gabriel Davi Marena, Juliana Camila Fischer Karnopp, Juliana Jorge, Rafael Miguel Sabio, Marco Antonio Utrera Martines, Tais Maria Bauab, Marlus Chorilli
Summary: Pharmaceutical nanotechnology has significant advantages in controlling drug release. Mesoporous silica nanoparticles (MSNs) are an important system that can carry and release drugs effectively. However, the use of surfactant CTAB in the synthesis of MSNs may pose toxicity risks.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
James Huang, Yunil Cho, Victor Wang, Zichen Zhang, Jing Mu, Ajay Yadav, Keith Wong, Srinivas Nemani, Ellie Yieh, Kummel Andrew
Summary: Selective and smooth dielectric-on-dielectric deposition was achieved through water-free single-precursor chemical vapor deposition (CVD) processes with the assistance of aniline passivation. Aniline was selectively passivated on W surfaces instead of SiO2 at various temperatures. After aniline passivation, selective deposition of HfO2, Al2O3, and TiO2 on HF-cleaned SiO2 surface using water-free single-precursor CVD was demonstrated. Nanoselectivity and low surface roughness of HfO2 and Al2O3 deposition on SiO2 regions were confirmed by transmission electron microscopy images of patterned W/SiO2 samples.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Li Sheng, Feng Han, Xin Zhang, Haisu Li, Ying Mi, Biquan Su
Summary: The resonance Rayleigh scattering spectra of the Al(III)-chromium azure S-cetyltrimethyl ammonium bromide system were studied in this experiment. The optimal experimental conditions, interference of other ions, and reaction mechanism were investigated. The results showed that Al(III) forms an anion with chromium azure S and forms ionic association with cetyltrimethyl ammonium bromide, increasing the scattering intensity. The mass concentration of Al(III) showed a linear relationship with the scattering intensity in a certain range with good accuracy.
Article
Engineering, Environmental
Mohammed K. Al Mesfer, Mohd Danish, Mumtaj Shah
Summary: The optimization of fluoride removal from aqueous media was studied using mesoporous titania-alumina composites and Taguchi method. The study demonstrated that solution pH was the most significant parameter for fluoride adsorption, and the synergistic combination of Ti-Al nanoparticles showed the highest adsorption capacity.
WATER ENVIRONMENT RESEARCH
(2022)
Article
Biotechnology & Applied Microbiology
Yuan Li, Yuyi Yang, Guangfei Qu, Yuanchuan Ren, Zuoliang Wang, Ping Ning, Fenghui Wu, Xiuping Chen
Summary: Loading citric acid as a modifier onto the surface of mesoporous alumina synthesized from industrial solid waste secondary aluminum ash can produce highly efficient fluoride removing adsorbents. The modified adsorbent demonstrates stable adsorption properties under acidic conditions, reaching equilibrium quickly and maintaining good cycling performance. Ion exchange between -OH and fluoride is the main process of fluoride adsorption, and the introduction of citric acid increases the amount of -OH in the adsorbent. Coexisting anions, particularly PO43- and CO32-, have a significant influence on fluoride adsorption.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Chemistry, Applied
J. J. Santana, V. F. Mena, A. Betancor-Abreu, R. Rodriguez-Raposo, J. Izquierdo, R. M. Souto
Summary: The electrocoagulation sludge can be used to produce microcapsules for efficient anticorrosion protection of engineering metals.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Materials Science, Multidisciplinary
Chengwei Liu, Nengsheng Liu, Xiaoying Li, Xintao He, Xueqing Liu, Bo Hu, Sufang He
Summary: This study investigated the use of high-alumina fly ash to prepare mesoporous alumina adsorbents for the removal of Cd(II) from water. The synthesized mesoporous alumina showed excellent adsorption performance for Cd(II) at pH 7 with a contact time of 60 minutes. The fitting results of different models indicated chemisorption and monolayer adsorption of Cd(II) on the surface of the synthesized alumina.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Polymer Science
Shiting Wang, Wenzhong Ma, Haicun Yang, Zheng Cao, Chunlin Liu, Fanghong Gong
Summary: This study investigates the crystallization of PVDF thin films induced by CTAB through solution crystallization and melt crystallization methods. It is found that CTAB promotes the formation of polar crystals in the PVDF and increases the crystallinity, resulting in PVDF films with high polar phase content.
JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS
(2022)
Article
Chemistry, Physical
Qihong Chang, Yaguang Zhang, Guolong Yuan, Congcong Shi, Junxi Yu, Youlan Zou, Junan Pan, Shuhong Xie
Summary: By utilizing metal-organic frameworks and glucose to synthesize porous carbon materials, and introducing aluminum fluoride into the sulfur electrode, the performance and cyclic stability of lithium-sulfur batteries can be significantly improved.
Article
Chemistry, Multidisciplinary
Eue-Soon Jang
Summary: This study is the first to investigate the effect of alcohol alkyl chain length on the formation of mesoporous silica layers on CTAB-stabilized gold nanorods, revealing significant differences in growth tendencies compared to previously reported spherical silica particles. The formation of the mSiO (2) layer was found to be closely related to the interaction between the CTAB bilayer and alcohol.
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Inorganic & Nuclear
S. N. Ivicheva, A. A. Klimashin, N. A. Ovsyannikov, A. S. Lysenkov, Yu F. Kargin
Summary: The conditions for preparing beta-SiAlON by reacting highly dispersed mixed silicon and aluminum alkoxide xerogels with molecular nitrogen at 1600-1700 degrees C are determined. The nitrogenation of mixed xerogels is shown to be due to the catalytic pyrolytic decomposition of hydrolysis products of silicon and aluminum alkoxides in a nitrogen atmosphere, leading to a change in the sialon stoichiometry from beta-Si3Al3O3N5 to the 15R polytype.
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Metallurgy & Metallurgical Engineering
A. Rudenko, A. A. Kataev, O. Yu Tkacheva, Yu P. Zaikov, A. A. Pianykh, G. Arkhipov
Summary: The viscosity of conventional cryolite-alumina melts was studied in relation to the content of CaF2, Al2O3, and temperature. It was found that the viscosity of electrolytes increases with temperature, and the coefficients of temperature dependence differ between laboratory and industrial conditions.
RUSSIAN JOURNAL OF NON-FERROUS METALS
(2022)
Article
Chemistry, Applied
Lulu Wan, Gan Ye, Yuying Chang, Zhaohan Yang, Guangming Shi, Qiuli Zhang, Jin Wang
Summary: This study developed an efficient approach to upgrade the oxidative desulfurization (ODS) performance of Zr-MOFs with proton stimulation. Experimental results showed that the introduction of protons can significantly improve the ODS efficiency. This work provides a facile and efficient strategy for enhancing the ODS performance of pristine MOFs.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Qiqi Lu, Xiu-Zhi Wei, Qi Zhang, Xinghua Zhang, Lungang Chen, Jianguo Liu, Yubao Chen, Longlong Ma
Summary: The application of Pd-M bimetallic clusters in the selective hydrogenation reaction was investigated, and the Pd0.6Ni@S-1 catalyst was found to exhibit high selectivity in the conversion of phenylacetylene to styrene. The confinement effect of zeolite inhibited over-hydrogenation and improved the stability of the catalysts. Furthermore, the solvent properties also influenced the product distribution.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Review
Chemistry, Applied
Bo Li, Lumin Hong, Changdi Jing, Xianyang Yue, Huabo Huang, Qianqian Jiang, Jianguo Tang
Summary: MOF materials with adjustable pore structure and polymetallic sites have been explored as electrocatalysts for OER. Bimetallic materials show higher electrocatalytic activity than monometallic materials, while carbon-coated and doped MOF catalysts exhibit stable and good OER activity. The synergistic interaction between polymetallic active sites effectively improves the intrinsic activity of MOF on OER.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Shichun Gu, Ruyi Wang, Junxiong Zhang, Hairong Dong, Liping Deng, Xue Wang, Yapeng He
Summary: In this study, monodispersed hollow mesoporous organosilica nanospheres with controlled core cavity and mesoporous shell were successfully synthesized. These hollow nanospheres showed a high adsorption capacity for Pb2+ in water solution and exhibited acceptable recycling and stability.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Lucie Havelkova, Bogdana Bashta, Michaela Vankova, Jiri Zednik, Jiri Brus, Jan Svoboda, Alice Vagenknechtova, Jan Sedlacek
Summary: An atom-economic one-step chain-growth coordination homopolymerization providing high yields of functionalized hyper-cross-linked polyacetylenes with a permanent micro/mesoporous texture and a BET area of up to 1062 m2/g is reported. The homopolymerization is highly compatible with the heteroatom groups of the monomers and allows the preparation of well-defined porous networks with a wide spectrum of univalent groups.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Shirui Pang, Yuxin Liu, Zhe Zhang, Yuxin Li, Chunguang Li, Zhan Shi, Shouhua Feng
Summary: This study focuses on using a functional separator to suppress the shuttle effect of soluble lithium polysulfides in Li-S batteries. It is found that the functionalized sulfonic acid group not only accelerates the conduction of lithium ions, but also repels polysulfide anions through electrostatic interactions. The performance of the batteries is significantly improved with the use of this functionalized separator.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Pingping Li, Lei Han, Donghun Kim, Kemal Celebi
Summary: This study presents a fast synthetic strategy for the preparation of high-quality platelike MFI crystals using a thin-wall tubular reactor. The strategy is efficient, time-saving, and can be optimized, making it applicable to the preparation and optimization of other important materials.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Haitao Yin, Wei Wang, Yuxin Li, Hu Wen, Shuang Chen, Nanzhe Jiang
Summary: This study presents a template-free and solid-state-like crystallisation method for the synthesis of ZSM-5 zeolite, which can be scaled-up in production. Mechanical mixing of starting material components improves the dispersion of materials, leading to ZSM-5 zeolite with high crystallinity and size uniformity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Congli Li, Jiang Wang, Zhenfei Wang, Jinxiang Dong, Qi Shi
Summary: This study investigates the evolution and autoreduction behavior of Cu species in CuCl/NaY adsorbent during vacuum thermal activation. It is found that Cu species migrate from supercages to the nearby plane of the six-membered ring connecting the supercage and sod cage during vacuum activation. At 150 degrees C, vacuum autoreduction occurs, resulting in the formation of Cu+Cl- species. The results provide reference for the preparation of pi-complex adsorbents.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Irena Khatrin, Iman Abdullah, Alan J. Mccue, Yuni K. Krisnandi
Summary: Hierarchical porous system with two types of mesopores provides a solution to the diffusion limitation in conventional zeolites. Cobalt oxide impregnated hierarchical ZSM-5 zeolite samples with intra- and inter-crystalline mesopores were synthesized using two different strategies. The physicochemical properties of the modified catalysts were analyzed, revealing distinct features given by the two mesoporous configurations. Catalytic activity analysis showed that Co-oxide/ZSM-5 with inter-crystalline mesopores exhibited higher activity in methane partial oxidation reaction compared to Co-oxide/ZSM-5 with intra-crystalline mesopores.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Nataliia Reinders, Martin Durovic, Pavla Honcova, Zaneta Dohnalova, Jana Luxova, Stanislav Slang, Jhonatan Rodriguez-Pereira, Petra S. Sulcova
Summary: This study presents a new method for preparing a microporous Ni2P/C catalyst with high catalytic activity. The redox reaction and carbon matrix formation during high-temperature treatment contribute to the stability and activity of the catalyst. Experimental and analytical results suggest that the microporous structure of the composite plays a crucial role in its catalytic performance. These findings are important for practical applications of efficient hydrogen production by water electrolysis.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Ana Raquel Bertao, Viktoriya Ivasiv, Cristina Almeida-Aguiar, Patricia R. Correia, Antonio M. Fonseca, Manuel Banobre-Lopez, Fatima Baltazar, Isabel C. Neves
Summary: This study developed a zeolite-based delivery system (ZDS) using silver and 5-Fluorouracil as antimicrobial and antineoplastic agents. The ZDS was characterized and its antimicrobial properties were investigated, showing better antibacterial effectiveness for the ZDS containing both silver and 5-FU.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Naonobu Katada, Nobuki Ozawa, Etsushi Tsuji, Keigo Kanehara, Akiho Otsuka, Taiga Sakamoto, Kirari Umezawa, Hitoshi Matsubara, Satoshi Suganuma, Momoji Kubo
Summary: First principles calculations were used to investigate the pathway for methylation of benzene with methane catalyzed by MFI type zeolite-supported Co species. The strong adsorption of benzene on Co is found to lower the activation energy for methane dissociation and promote the formation of toluene precursor. The activation energy of methane dissociation is also affected by the Al-Al distance.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Yuan Liu, An T. Ta, Kyoung Chul Park, Shenyang Hu, Natalia B. Shustova, Simon R. Phillpot
Summary: We use density functional theory to investigate the interactions of cerium, americium, and curium cations with crown ethers. Our results demonstrate that crown ethers can capture cerium, americium, and curium ions, and modifying the crown ether structure by substituting nitrogen atoms for oxygen atoms significantly increases their binding energies with radionuclides.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Zhengwu Peng, Shixing Wang, Yihui Wu, Xiang Liu, Hongliang Liu, Dekun Zhang, Likang Fu
Summary: An efficient adsorbent for recovery of germanium was prepared and characterized in this study. The adsorption behavior of Ge(IV) on the adsorbent was analyzed, and the results showed that it follows pseudo-secondary kinetic model and Langmuir isotherm model. The adsorbent exhibited good anionic anti-interference ability and can still maintain high adsorption efficiency after repeated adsorption.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)