Article
Materials Science, Ceramics
Fenqi Du, Dongmei Yang, Yue Sun, Yang Jiao, Feng Teng, Haibo Fan
Summary: This study synthesized Zn-doped Ga2O3 nanofibers with various concentrations through electrospinning, showing superior photocatalytic performance compared to undoped Ga2O3 nanofibers. Zn doping replaced Ga sites, increasing oxygen vacancy concentration and enhancing photocatalytic properties. The formation of a Ga2O3/ZnGa2O3 hybrid structure with increasing Zn concentration further improved photocatalytic performance through carrier separation and heterojunctions.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Brahami Das, Nirmalya S. Das, Biswajit Das, Ratna Sarkar, Subrata Sarkar, Kalyan Kumar Chattopadhyay
Summary: Low-dimensional Ga2O3 was synthesized through a simple chemical route, allowing for easy tuning of morphology. Different Gallia precursors led to spherical nanoparticles and fractured nanobricks as the end product. Despite their wide bandgap, both samples showed efficient visible-light-induced photocatalytic degradation of toxic organic pollutants due to sensitization of the dyes. The nitrate-salt-originated nanobricks exhibited higher degradation efficiency towards rhodamine B (RhB) compared to the chloride-salt nanospheres, attributed to their electronic band positions and morphological features such as higher specific surface area, porosity, and aspect ratio. This remediation technology can be applied to optimize future catalyst systems for wastewater treatment fabricated via the hydrothermal-synthesis route.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Youlin Xiong, Xining Zhang, Haolin Li, Jianwei Ding, Shuangfei Cai, Wei Zhang, Rong Yang
Summary: Here, we present a facile and effective strategy for the patterned growth of one-dimensional β-Ga2O3 nanowires on metallic substrates using liquid gallium as a precursor. By screen printing gallium on a metallic foil, an intermetallic phase is formed by alloying, and subsequent thermal treatment with sputtering Au induces the formation of β-Ga2O3 nanowires on the foil. The in situ growth of nanowires is maintained by the gallium in the intermetallic phase, and the growth process follows a classical vapor-liquid-solid mechanism dependent on Au sputtering and temperature. The convenient alloying at a moderately low temperature facilitates the synthesis of nanowires, and this approach is applicable to various metallic substrates and can be scaled up easily. Moreover, the β-Ga2O3 nanowires grown on Ag foil (β-Ga2O3/Ag) exhibit excellent photocatalytic performance and can be easily recovered for dye degradation, making them a promising candidate for environmental applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Rabeya Sultana, Samia Islam Liba, Md . Abdur Rahman, Nymul Yeachin, Ishtiaque M. Syed, Mahabub Alam Bhuiyan
Summary: This study reports the synthesis and characterization of different doped TiO2 nanoparticles using a cost-effective sol-gel method. The co-doped TiO2 nanoparticles showed enhanced visible light response and photocatalytic performance.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Grzegorz Matyszczak, Pawel Jozwik, Magdalena Zybert, Albert Yedzikhanau, Krzysztof Krawczyk
Summary: The possibility of modifying SnS2 powder through sonochemical synthesis with the addition of different organic ligands was investigated. Results showed that modification with Phenol Red led to a significant shift in optical bandgap and better photocatalytic performance, while modification with Anthraquinone Violet was unsuccessful.
Article
Environmental Sciences
Barkha Rani, Arpan Kumar Nayak, Niroj Kumar Sahu
Summary: By tuning the physiochemical properties of GCN and melem derivatives, an efficient catalyst M-450 was synthesized with superior removal capacity for both single and mixed dye systems, demonstrating excellent stability and reusability in the degradation of textile dyes.
Article
Environmental Sciences
Gauthaman Chandrabose, Avishek Dey, Shivani Singh Gaur, Sudhagar Pitchaimuthu, Hema Jagadeesan, N. St John Braithwaite, Vimalnath Selvaraj, Vasant Kumar, Satheesh Krishnamurthy
Summary: The study focuses on using MoS2/TiO2 nanocomposites to remove mixed dye pollutants through a two-stage adsorption/photocatalysis process. By using a high percentage of MoS2 in Stage-I and a low percentage in Stage-II, the process showed complete removal of methylene blue dye 5 times faster than conventional single-stage water treatment processes. Additionally, the method demonstrated excellent performance in removing mixed dye pollutants even at higher concentrations.
Article
Engineering, Electrical & Electronic
Saurabh Yadav, Amit Kumar Singh, M. K. Roy, Y. S. Katharria
Summary: The optical, structural, and dielectric properties of SnO2-Ga2O3 nanocomposites were studied. The addition of Sn in Ga2O3 significantly influenced the dielectric measurements. The dielectric constant and dielectric loss decreased, while the electrical conductivity increased with increasing Sn content.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Donglei Wei, Xifeng Yang, Yushen Liu, Hyo Jin Seo
Summary: Molybdenum and vanadium mixed oxides were synthesized and their phase formation, optical absorption, and photocatalytic properties were investigated. The results showed that these mixed oxides exhibited efficient light response and improved photocatalysis due to the presence of intrinsic redox couples. This study provides a potential alternative material for high-performance photocatalysts.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Energy & Fuels
Chung-En Tan, En-Chin Su, Ming-Yen Wey
Summary: In this study, MIL-88A metal-organic frameworks with excellent physicochemical properties were synthesized using mixed organic ligands. The effects of different iron precursors on the properties of MIL-88A were investigated. It was found that the difference in metal ion dissociation rates influenced the crystallization rate of MIL-88A, leading to improved adsorption capacity and photocatalytic activity. The findings suggest that MIL-88A can be widely applied in photocatalysis research.
Article
Environmental Sciences
Ye-Chen Lin, Hund-Der Yeh
Summary: A new analytical model with a generalized transfer term (GTT) is proposed to describe groundwater flow in fractured aquifer systems, addressing previous issues in predictive accuracy. Investigation of different weight values in GTT and sensitivity analysis of aquifer parameters provide insights into the impact on DP flow. The model's drawdown predictions fit field measured data well, suggesting its adequacy in describing real-world DP flow systems.
WATER RESOURCES RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Rama Gaur, Syed Shahabuddin, Irfan Ahmad
Summary: This paper reports the preparation of a MAX phase-polyaniline nanocomposite as a photocatalyst for the degradation of methyl orange (MO) dye under solar light irradiation. The nanocomposite exhibits better performance than the pure polymer and MAX phase.
Article
Optics
P. Ramadevi, G. Vinodhkumar, Ra. Shanmugavadivu
Summary: The pollution issue is worsening alongside industrial growth, with organic dyes being one of the toxic components in industrial effluents. This study investigated the degradation efficiency of organic dyes using as-prepared and annealed copper ferrite nanoparticles loaded on reduced graphene oxide photo-catalyst. The synthesized particles were characterized using various analytical techniques, and the prepared nanocomposites showed effective repeating activity and superparamagnetic properties.
Article
Environmental Sciences
Woottikrai Chairungsri, Arisa Subkomkaew, Pimluck Kijjanapanich, Yothin Chimupala
Summary: The research focused on immobilizing TiO2 onto glass and iron beads substrates by calcining the composite materials at different temperatures. SEM and EDS analyses showed that TiO2 particles were evenly distributed on the substrates at 700 degrees C, with mixed-phase anatase and rutile structures beneficial to photocatalysis. The composite materials achieved a direct dye photodegradation efficiency of 64.0% at 4 h, with high stability of the immobilized TiO2 on the fixed substrates even after reuse.
Article
Chemistry, Physical
Moumita Mondal, Moupiya Ghosh, S. K. Pradhan
Summary: Heterostructured Bi-Fe-O (BFO) nanocomposites were successfully synthesized and characterized for their structure, photocatalytic activity, and recyclability. The results show that the nanocomposites exhibit promising catalytic effects in wastewater treatment.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
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)