Article
Chemistry, Physical
Lariana Negrao Beraldo de Almeida, Tatiana Gulminie Josue, Othavio Henrique Lupepsa Nogueira, Daniele Toniolo Dias, Angelo Marcelo Tusset, Onelia Aparecida Andreo dos Santos, Giane Goncalves Lenzi
Summary: This study investigated the discoloration of synthetic and industrial effluent using quarry residue as a photocatalyst and adsorbent in comparison to zinc oxide. The quarry residue showed promising results as an adsorbent and photocatalyst for discoloration of aqueous solutions, although lower than ZnO.
Article
Materials Science, Multidisciplinary
Aleksandra Wojcicka, Zsolt Fogarassy, Adel Racz, Tatyana Kravchuk, Grzegorz Sobczak, Michal A. Borysiewicz
Summary: This study comprehensively explores the parameters in magnetron sputtering for obtaining low-resistivity ZnO:Al films. They found that the total argon pressure had the greatest impact on the outcomes and achieving the lowest pressure was crucial. The researchers also tested different AZO targets and found minimal differences, suggesting that target choice may not significantly affect the film properties.
Article
Materials Science, Coatings & Films
Nina Schalk, Christian Saringer, Alexander Fian, Velislava L. Terziyska, Jaakko Julin, Michael Tkadletz
Summary: In this study, a series of TaAl(O)N films were deposited with varying oxygen and nitrogen content, affecting the metal/non-metal ratio, crystal structure, and mechanical properties. The films were characterized using a variety of techniques to investigate their structure and performance comprehensively.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Sachiko Ono, Hidetaka Asoh
Summary: The process of hot water sealing of anodic alumina films was investigated, revealing that as sealing time increases, the quantity and size of boehmite flakes within the films also increase, ultimately forming a three-layered structure.
Article
Materials Science, Multidisciplinary
Claudiu Colbea, Petruta Oancea, Mihaela Puiu, Toma Galaon, Adina Raducan
Summary: This study reports the degradation performance of three phthalocyanine-photosensitized TiO2 nanocomposites on waste dyes, showing good decolourization efficiency and thermal stability, with the potential to achieve high organic carbon removal rates. The experiments demonstrate that these sensitized catalysts can effectively degrade recalcitrant azo dyes and may be combined with enzymatic/microbial treatment for total mineralization.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Rodrigo Henriquez, Paula Salazar Nogales, Paula Grez Moreno, Eduardo Munoz Cartagena, Patricio Leyton Bongiorno, Elena Navarrete-Astorga, Enrique A. Dalchiele
Summary: Kesterite Cu2ZnSnS4 (CZTS) nanoparticles were successfully synthesized using a hydrothermal method. Characterization techniques including XRD, Raman spectroscopy, XPS, FE-SEM, EDS, TEM, and UV-vis spectroscopy were employed to study the structural, chemical, morphological, and optical properties. The synthesized CZTS nanoparticles exhibited a nanocrystalline structure with a bandgap of 1.5 eV, making them suitable for solar photocatalytic degradation applications. The photocatalytic activity of CZTS was demonstrated through the degradation of Congo red azo dye under solar simulation light irradiation, achieving 90.2% degradation in just 60 minutes. The prepared CZTS nanoparticles were also reusable for the removal of Congo red dye from aqueous solutions.
Article
Optics
R. Stanley, J. Alphas Jebasingh, S. Manisha Vidyavathy, P. Kingston Stanley, P. Ponmani, M. E. Shekinah, J. Vasanthi
Summary: Efficient silver-assisted ZnO nanocomposite (AZ) was fabricated using the co-precipitation method, which showed reduced bandgap of ZnO and higher photocatalytic efficiency under sunlight. The incorporation of silver led to a shift in emission spectra from UV to visible region, allowing for more photon capture. Among all prepared samples, AZ-1 exhibited the highest photocatalytic degradation efficiency over methylene blue dye, offering a promising new pathway for industrial wastewater treatment.
Article
Materials Science, Ceramics
G. K. Sukhadeve, S. Y. Janbandhu, Rahul Kumar, D. H. Lataye, D. D. Ramteke, R. S. Gedam
Summary: Fe doped TiO2 nanoparticles were successfully synthesized using a sol-gel method, and characterized by various analytical techniques. The doping concentration of Fe was found to affect the morphology and structure of the material. The synthesized nanoparticles exhibited excellent photocatalytic activity and removal efficiency.
CERAMICS INTERNATIONAL
(2022)
Article
Environmental Sciences
Khawla Alsamhary, Nouf M. Al-Enazi, Eman Alhomaidi, Saad Alwakeel
Summary: This research aims to synthesize Copper oxide nanoparticles (CuO NPs) using Cyanobacterium in a greener way. The NPs were synthesized using Spirulina platensis, and the method offers a less toxic, less cost, and environment friendly approach. The CuO NPs were capped and stabilized by the natural substances of S. platensis, as confirmed by GC-MS analysis. Various analytical techniques, such as UV-Vis spectroscopy, FT-IR, XRD, SEM, and TEM, were employed to characterize the NPs and confirm their formation. The CuO NPs showed significant photocatalytic activity in degrading Congo red dye.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Roman I. Romanov, Ivan V. Zabrosaev, Anastasia A. Chouprik, Dmitry I. Yakubovsky, Mikhail K. Tatmyshevskiy, Valentyn S. Volkov, Andrey M. Markeev
Summary: Metal-Organic CVD method allows for deposition of high-quality ultrathin 2D transition metal dichalcogenides films onto wafer-scale substrates. The effect of temperature on the structure, chemical states, and electronic qualities of the films was investigated. The results demonstrate a relationship between crystallite domains size and sulfur vacancies concentration, suggesting that vacancies primarily form at the grain boundaries and contribute to the increase in resistivity.
Article
Chemistry, Analytical
Tanmay Vyas, Manashjit Gogoi, Abhijeet Joshi
Summary: In this study, a pH-sensitive CQD thin film was developed for the detection of textile dye pollutants in water resources. The film exhibited fast and accurate detection of various acidic and basic dyes, with low detection limits.
Article
Materials Science, Multidisciplinary
B. Al Farsi, T. M. Souier, F. Al Marzouqi, M. Al Maashani, M. Bououdina, H. M. Widatallah, M. Al Abri
Summary: Transparent pure and Al-doped zinc oxide thin films were successfully deposited on glass substrates using the sol-gel dip-coating technique. The study found that Al doping and annealing temperature have significant effects on the structural, morphological, optical properties, and photocatalytic activity of the films. Al doping was found to improve the photocatalytic activity of the films.
Article
Chemistry, Physical
Ye-Seul Lee, Ji-Hyeon Yoon, Akeem Raji, Seung-Yo Baek, Yoonseuk Choi, Jonghee Lee, Akpeko Gasonoo, Jae-Hyun Lee
Summary: Visible parylene films with adjustable haze were produced by tuning the pyrolysis temperature of parylene-C. These films exhibited a certain level of haze and transmittance, and had high resistivity, making them suitable for insulation coatings in optical systems and electronic devices.
Article
Construction & Building Technology
Soong Yeon Kim, Byeong Jun Cha, Shufang Zhao, Hyun Ook Seo, Young Dok Kim
Summary: The photocatalytic activities of two commercial TiO2 particles and their Fe-modified counterparts were studied under different conditions, showing that Fe-R996 exhibited higher activity than Fe-P25 under visible light and humid conditions.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Ankush G. Thate, Keshav S. Pakhare, Satish S. Patil, Vijaykumar M. Bhuse
Summary: This study presents betanin dye-loaded TiO2-ZnO thin film solar cells for solar energy harvesting. TiO2-ZnO nanocomposite was prepared by the one-step microwave-assisted technique and exhibited mixed phases of rutile and wurtzite structure of TiO2 and ZnO respectively. The morphological investigations showed interconnected many-fold nanoflakes morphology of deposited TiO2-ZnO nanocomposite. EDS confirmed the formation of stoichiometric TiO2-ZnO nanocomposite films. The optical study demonstrated electronic transition with a bandgap energy range of 2.72 to 2.94 eV. Photovoltaic performance showed photocurrent from 1.62 to 2.73 mA cm(-2) with the photovoltage of 659-795 mV and a 3.25% photo-conversion efficiency for the TZO3 dye-sensitized solar cell (DSSCs) sample.
MATERIALS RESEARCH EXPRESS
(2023)
Article
Chemistry, Physical
Bolun Yu, Denan Li, Qianqian Zhu, Shufan Yao, Lifeng Zhang, Yanshuo Li, Zhenxin Zhang
Summary: This study successfully improved the catalytic activity of a zeolitic octahedral metal oxide by incorporating a single zinc species into its micropore. The zinc incorporation achieved a high ethane conversion rate and ethylene selectivity. Mechanism study showed that the isolated zinc site played a crucial role in activating oxygen and ethane, as well as stabilizing intermediates and transition states.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Ruoqi Liu, Hao Fei, Jian Wang, Ting Guo, Fangyang Liu, Zhuangzhi Wu, Dezhi Wang
Summary: This work successfully synthesized a high-performing S-enriched MoS2 catalyst for electrocatalytic nitrogen reduction reaction (NRR), demonstrating high activity and selectivity. The synergistic effect of the 1T phase and bridging S22- species was shown to play a positive role in NRR performances, and DFT calculations revealed the mechanism behind the improved performance.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Pan Xia, Lele Zhao, Xi Chen, Zhihong Ye, Zhihong Zheng, Qiang He, Ignasi Sires
Summary: This study presents a modified gas-diffusion electrode (GDE) for highly efficient and stable H2O2 electrosynthesis by using trace polymethylhydrosiloxane (PMHS). DFT calculations provide an in-depth understanding of the roles of PMHS functional groups.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Kwangchol Ri, Songsik Pak, Dunyu Sun, Qiang Zhong, Shaogui Yang, Songil Sin, Leliang Wu, Yue Sun, Hui Cao, Chunxiao Han, Chenmin Xu, Yazi Liu, Huan He, Shiyin Li, Cheng Sun
Summary: Different B-doped rGO catalysts were synthesized and their 2e- oxygen reduction reaction (ORR) performance was investigated. It was found that the 2e- ORR selectivity of B-doped rGO was influenced by the B content and oxygen mass transfer conditions. The synthesized catalyst exhibited high 2e- ORR selectivity and was capable of degrading organic pollutants continuously.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Li Lv, Lin Lei, Qi-Wen Chen, Cheng-Li Yin, Huiqing Fan, Jian-Ping Zhou
Summary: Monoclinic phase La2Ti2O7 and orthorhombic phase Bi4Ti3O12 are widely used in photocatalysis due to their layered crystal structure. The electronic structures of these phases play a crucial role in their photocatalytic activity. Heat treatment in a nitrogen atmosphere introduces more oxygen vacancies into the S-scheme heterojunction, leading to enhanced NO removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Choe Earn Choong, Minhee Kim, Jun Sup Lim, Young June Hong, Geon Joon Lee, Keun Hwa Chae, In Wook Nah, Yeomin Yoon, Eun Ha Choi, Min Jang
Summary: In this study, the synergistic effect between argon-plasma-system (AP) and catalysts in promoting the production of reactive species for water remediation was investigated. By altering the oxygen vacancies concentration of CeO2/Bi2O3 catalyst, the production of hydrated electrons was stimulated for PFOA removal. The results showed that the built-in electric field in the Bi/Ce0.43 interface enhanced electron migration and eaq- generation, leading to improved PFOA removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yushan Wu, Di Xu, Yanfei Xu, Xin Tian, Mingyue Ding
Summary: Efficient synthesis of primary amines from carbonyl compounds was achieved via reductive amination using Ru@NC-Al2O3 as a catalyst, exhibiting high activity and selectivity under mild conditions.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yilan Jiang, Peifang Wang, Tingyue Chen, Keyi Gao, Yiran Xiong, Yin Lu, Dionysios D. Dionysiou, Dawei Wang
Summary: By controlling the content of Co and Ni in Co1-xNixFe2O4, the production of O-1(2) from H2O2 can be regulated. NiFe2O4, with the lowest lattice distortion degree, can efficiently produce O-1(2) as the dominant reactive oxygen species. The system also exhibits significant resistance to water matrix interference.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Shuai Feng, Donglian Li, Hao Dong, Song Xie, Yaping Miao, Xuming Zhang, Biao Gao, Paul K. Chu, Xiang Peng
Summary: In this study, MoO2/Mo2N heterostructures were prepared by regulating the coordination of Mo atoms. The electrocatalyst exhibits high current density and excellent stability for hydrogen evolution reaction.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Jia-Cheng E. Yang, Min -Ping Zhu, Daqin Guan, Baoling Yuan, Darren Delai Sun, Chenghua Sun, Ming-Lai Fu
Summary: This study successfully modulated the electron configuration and spin state of millimetric metal catalysts by adjusting the support curvature radius. The electronic structure-oriented spin catalysis was found to affect the degradation of pollutants, providing new insights for the design and production of highly active, reusable, and stable catalysts.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Tao Zhong, Su Tang, Wenbin Huang, Wei Liu, Huinan Zhao, Lingling Hu, Shuanghong Tian, Chun He
Summary: In this study, a highly efficient photocatalyst for the elimination of CH3SH was developed by engineering different crystal facets and coupling them with PHI. Cu (111)/PHI exhibited the highest elimination efficiency and showed good stability and reusability. The enhanced surface electron pump effect and effective adsorption mechanisms were revealed through comprehensive characterizations and DFT calculations.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Feifei Yang, Tianyu Zhang, Jiankang Zhao, Wei Zhou, Nicole J. Libretto, Jeffrey T. Miller
Summary: A Ni3Sn intermetallic nano particle was found to have geometrically isolated Ni sites that could selectively cleave C-O bonds in biomass derivatives. This nano particle showed high activity and selectivity towards 2-methylfuran, unlike Ni nanoparticles that produced other unwanted products derived from the aromatic rings.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Lulu Qiao, Di Liu, Anquan Zhu, Jinxian Feng, Pengfei Zhou, Chunfa Liu, Kar Wei Ng, Hui Pan
Summary: This study reveals that surface evolution plays a crucial role in enhancing the electrocatalytic performance of transition metal oxides for electrochemical nitrate reduction reaction (e-NO3RR). Incorporating nickel into Co3O4 can promote surface reconstruction and improve the adsorption of intermediates and reduce energy barriers, leading to enhanced catalytic performance. The reconstructed cobalt-nickel hydroxides (CoyNi1_y(OH)2) on the catalyst's surface serve as the active phase.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Xinyu Song, Yang Shi, Zelin Wu, Bingkun Huang, Xinhao Wang, Heng Zhang, Peng Zhou, Wen Liu, Zhicheng Pan, Zhaokun Xiong, Bo Lai
Summary: This study explores the discriminative activities and mechanisms for activation of O-O bond in peroxy compounds via single-atom catalysts (SACs) with higher coordination numbers (M-N5). The atomic catalyst (Fe-SAC) with Fe-N5 as the active center was constructed, effectively activating peroxymonosulfate (PMS), peroxydisulfate (PDS), and hydrogen peroxide (H2O2). The study demonstrates the degradation efficiencies of acyclovir are related to the O-O bond length in different peroxy compounds, and reveals the discriminative mechanisms for activation of O-O bond in different Fenton-like systems.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Yangzhuo He, Hong Qin, Ziwei Wang, Han Wang, Yuan Zhu, Chengyun Zhou, Ying Zeng, Yicheng Li, Piao Xu, Guangming Zeng
Summary: A dual-metal-organic framework (MOF) assisted strategy was proposed to construct a magnetic Fe-Mn oxycarbide anchored on N-doped carbon for peroxymonosulfate (PMS) activation. The FeMn@NC-800 catalyst exhibited superior activity with almost 100% degradation of sulfamethazine (SMZ) in 30 minutes. The study provided insights for the rational design of high-performance heterogeneous catalysts and proposed a novel nonradical-based catalytic oxidation for environmental cleaning.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)