Article
Environmental Sciences
Karanpal Singh, Nancy, Harpreet Kaur, Pushpender Kumar Sharma, Gurjinder Singh, Jagpreet Singh
Summary: The study synthesized undoped and Cobalt-doped zinc oxide nanoparticles (Co doped ZnO NPs) and confirmed the incorporation of the Co dopant through spectroscopic and microscopic techniques. The Co-doped ZnO NPs showed a red shift in the UV-absorption spectra and a decrease in band gap value, indicating successful integration of Co2+ ions into the ZnO matrix. The synthesized NPs exhibited excellent photocatalytic and antimicrobial activity, with 1% Co-doped ZnO showing the highest photocatalytic efficiency.
Article
Materials Science, Multidisciplinary
Khadijah S. Al-Namshah, Sivalingam Muthu Mariappan, Mohd Shkir, Mohamed S. Hamdy
Summary: In this study, the photocatalytic activity of Ce:ZnO nanocrystals towards the degradation of methyl green dye molecules under black light irradiation was investigated. Ce:ZnO samples were prepared by a simple one-pot method with different Ce concentrations, and their crystal parameters and band gap changes were analyzed. The morphology and composition of Ce:ZnO nanocrystals were studied using scanning electron microscopy and energy dispersive X-ray techniques. Comparisons of the photocatalytic performances between pure ZnO, Ce:ZnO, and CeO2-ZnO composites were made, showing significant improvements in degradation efficiency with the addition of Ce.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Environmental Sciences
Yanet Pina-Perez, Enrique Samaniego-Benitez, Jhon Harrison Sierra-Uribe, Federico Gonzalez, Francisco Tzompantzi, Luis Lartundo-Rojas, Angeles Mantilla
Summary: Organic-inorganic hybrid materials are a class of novel materials that combine functional organic components and inorganic building blocks. This study demonstrates the importance of using ethylenediamine in sulfided materials for photocatalytic processes in H-2 production. The addition of ethylenediamine increases the photocatalytic efficiency up to eight times compared to the photocatalyst without the organic agent. Ethylenediamine plays a dual role by stabilizing the cubic phase of zinc sulfide and acting as a promoter for charge transfer on the surface of the ZnS/ZnO heterojunction.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Shipra Choudhary, Aditi Bisht, Biswarup Satpati, Satyabrata Mohapatra
Summary: Ce-doped ZnO nanospindles synthesized through a simple wet chemical method exhibit enhanced photocatalytic activity for the degradation of toxic pollutants under sunlight exposure. The improved performance is attributed to effective separation of photoinduced charge carriers, and the catalysts show good recyclability and stability for potential applications in environmental remediation.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Ceramics
Qiaoping Sun, Zhiwei He, Heyun Tan, Paolo Aprea, Shiyou Hao
Summary: Ce-Pr-Fe-O@C photocatalyst was synthesized via a codeposition method, and the effect of synthesis parameters on the degradation of AR14 was investigated. The results showed that the photocatalytic activity of Ce-Pr-Fe-O@C doped with a small amount of Fe, Pr, and C is more effective.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Electrical & Electronic
Patrik Scajev, Ramona Durena, Pavels Onufrijevs, Saulius Miasojedovas, Tadas Malinauskas, Sandra Stanionyte, Aleksej Zarkov, Anzelms Zukuls, Ivita Bite, Krisjanis Smits
Summary: Doping ZnO by lithium ions using a new microwave-assisted solvothermal method can enhance the photoluminescence intensity of ZnO emissions in the UV region. The photoluminescence intensity increases up to an order of magnitude with the increase of Li content in the ZnO crystals.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Materials Science, Ceramics
Tao Liu, Ya-qin Wang, Xing-gang Liu, Hai-tao Fu, Xi-zhong An, Jing-kun Yu
Summary: Sb-doped ZnO-Co3O4 nanoparticles with excellent gas-sensing performance for n-butanol were successfully synthesized by a simple one-step solvothermal route and annealing process, exhibiting high selectivity and sensitivity. The improved sensing performance of Sb-doped ZnO-Co3O4 was attributed to electronic and chemical sensitization effects of Sb as well as the formation of shallow donor complex defects.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Shipra Choudhary, Manisha Sharma, Venkata Krishnan, Satyabrata Mohapatra
Summary: We demonstrate a facile fabrication of Ce doped ZnO nanowires with outstanding photodegradation performance by thermal decomposition route. The impact of cerium doping on structure, optical and photodegradation behavior of ZnO nanowires was investigated. The results showed that ZnO nanowires doped with 0.5% Ce exhibited excellent photodecolorization performance and high efficiency in dye removal under sunlight exposure.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Zhonglian Xiao, Xuanyi Wu, Heyun Tan, Shiyou Hao
Summary: Fe-Ce-OH@AR14 was obtained by adsorbing acid red 14 (AR14) on Fe-Ce-OH prepared by codeposition of cerium nitrate hexahydrate, ferric nitrate nonahydrate, and ammonia. Subsequently, FeCeO@C with high photocatalytic efficiency was synthesized by calcinating Fe-Ce-OH@AR14 in N-2. The results of characterization techniques including XRD, Raman, XPS, FT-IR, SEM, PL, and UVevis showed that doping Fe3+ greatly reduced the band gap of CeO2 and carbon loading from the decomposition of AR14 improved carrier life, visible light absorption, and oxygen vacancy concentration. Photocatalytic results using AR14 as a probe molecule indicated that adding 1% ferric nitrate nonahydrate (by mass percentage to cerium nitrate hexahydrate) as a dopant and 25 mL of 0.01 mmol/L AR14 as loading carbon resource improved the photocatalytic efficiency of CeO2.
JOURNAL OF RARE EARTHS
(2023)
Article
Engineering, Environmental
Yanet Pina-Perez, Enrique Samaniego-Benitez, Jhon Harrison Sierra-Uribe, Federico Gonzalez, Francisco Tzompantzi, Luis Lartundo-Rojas, Angeles Mantilla
Summary: This study demonstrates the synthesis and photocatalytic performance of ZnS-ZnO composites with different compositions of ZnS-c, ZnS-h, and ZnO phases for H2 production. The solvothermal method was used to partially sulfide ZnO at different temperatures (150°C, 200°C, and 250°C) using mono ethylene glycol and thiourea as solvent and sulfur source, respectively. The material characterization involved X-ray diffraction, electron microscopy, UV-visible spectroscopy, X-ray photoelectron microscopy, N2 adsorption-desorption isotherms, and photoelectrochemical techniques. The highest photoactive material was synthesized at 200°C, showing an H2 production rate of 580 µmol h-1 g-1, attributed to the optimized interfacial properties between ZnS-c/ZnS-h and ZnO in the coupled photocatalytic system.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Ceramics
Khedidja Chehhat, Abla Mecif, Abedel Hakim Mahdjoub, Roshan Nazir, Manzoor Ahmad Pandit, Faiza Salhi, Abdelouahab Noua
Summary: In this study, high-quality ZnO thin films with different loadings of cobalt (Co) were prepared on porous ceramics substrates using a sol-gel dip-coating scheme. The impact of cobalt on the crystal phase, surface morphology, optical and chemical properties of the films was investigated. The results showed that the addition of cobalt led to a decrease in grain size and a reduction in band gap values of the films, resulting in improved performance in the removal of Orange II dye under UV radiation.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Pharmacology & Pharmacy
Ludmila Motelica, Bogdan-Stefan Vasile, Anton Ficai, Adrian-Vasile Surdu, Denisa Ficai, Ovidiu-Cristian Oprea, Ecaterina Andronescu, Dan Corneliu Jinga, Alina Maria Holban
Summary: Zinc oxide nanoparticles have various health-related applications and their properties can be influenced by the solvent used, resulting in different shapes and different photocatalytic and antimicrobial activities.
Article
Materials Science, Multidisciplinary
L. Munoz-Fernandez, L. S. Gomez-Villalba, O. Milosevic, M. E. Rabanal
Summary: This study presents the recent advances in the field of ZnO/Ag catalysts and introduces a facile solvothermal method to synthesize hierarchical ZnO nanowires decorated with Ag nanoparticles. The results show that the formation of ZnO nanowires and Ag nanoparticles is affected by experimental conditions, including synthesis time, Ag+/Zn2+ molar ratio, and the presence of CTAB. The photocatalytic activity of the catalyst is evaluated by studying the degradation time of methylene blue.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Jie Wang, Jing Yang, Hui Yang, Haizan Huang, Xiande Yang, Liang Wei
Summary: CdS microstructures with different morphologies were synthesized by solvothermal method at different solvents. SEM results showed that solvents have a great influence on morphology of CdS. CdS(EN) exhibited micro-flower structures with a large specific surface area and good visible light absorption. PL and EIS results indicated low recombination rate, fast charge transfer rate, and strong light response in CdS(EN). CdS(EN) showed efficient tetracycline degradation and good photocatalytic stability, with H-2 production efficiency reaching 1625 mu mol g(-1). The possible photocatalytic mechanism involving h(+) and .O(2)(-) was described.
Article
Chemistry, Physical
Wenliang Liu, Kai Qi, Yan Wang, Fushan Wen, Jiqian Wang
Summary: Element doping is an effective technique to modulate bandgap and improve activity of catalysts. In this study, halogen elements (F, Cl, Br, and I) were doped into Bi2WO6 to prepare catalysts with improved photocatalytic activity. The effects of doping on the crystal structure, morphology, and physicochemical properties were investigated, and the I-BWO catalyst showed the best performance in hydrogen production and rhodamine B photodegradation. Density functional theory calculations confirmed the bandgap regulation effect of the halogen doping and provided insights into the photocatalytic mechanism.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Applied
Nghia Huu Le, Samar Hajjar-Garreau, Magali Bonne, Cristina Megias-Sayago, Benoit Louis, Benedicte Lebeau, Lavinia Balan
MICROPOROUS AND MESOPOROUS MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Rabeb El-Hnayn, Laetitia Canabady-Rochelle, Christophe Desmarets, Lavinia Balan, Herve Rinnert, Olivier Joubert, Ghouti Medjahdi, Hafedh Ben Ouada, Raphael Schneider
Article
Nanoscience & Nanotechnology
Bilel Chouchene, Thomas Gries, Lavinia Balan, Ghouti Medjahdi, Raphael Schneider
Article
Chemistry, Multidisciplinary
Batukhan Tatykayev, Bilel Chouchene, Lavinia Balan, Thomas Gries, Ghouti Medjahdi, Emilien Girot, Bolat Uralbekov, Raphael Schneider
Article
Engineering, Environmental
Xavier Bellanger, Raphael Schneider, Clement Dezanet, Boussad Arroua, Lavinia Balan, Patrick Billard, Christophe Merlin
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Article
Chemistry, Physical
Salima Mabrouk, Herve Rinnert, Lavinia Balan, Sebastien Blanchard, Jordane Jasniewski, Ghouti Medjahdi, Rafik Ben Chaabane, Raphael Schneider
Summary: Highly photoluminescent ternary alloyed Mn-doped ZnSeS and core/shell Mn:ZnSeS/ZnS quantum dots were successfully synthesized using a simple aqueous route with thiolactic acid as a capping ligand. The photoluminescence quantum yield was found to depend on the Mn loading and increased after the growth of ZnS shell on Mn:ZnSeS cores, leading to the effective elimination of surface-trap states.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
H. B. Zouari, M. Dabert, L. Asia, P. Wong-Wah-Chung, M. Baba, L. Balan, Y. Israeli
Summary: This study investigated the impact of a low amount of photo-induced silver nanoparticles on the stability of acrylate materials, revealing that Ag NPs influenced the structure and stability of the polymer, with higher filler content leading to faster degradation. Irradiation caused the nanoparticles to migrate to the surface and alter the film's structure.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Erika Paola Fonseca Parra, Bilel Chouchene, Jean-Luc Six, Raphael Schneider, Khalid Ferji
Summary: The study successfully utilized U-g-C3N4 as a photocatalyst for PET-RAFT polymerization, investigating the effects of different components on polymerization control and oxygen tolerance, and proposing detailed mechanisms. It was found that adding a moderate quantity of tertiary amine could enhance oxygen tolerance, but excess would lead to loss of polymerization control.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Physical
Perizat Galiyeva, Herve Rinnert, Lavinia Balan, Halima Alem, Ghouti Medjahdi, Bolat Uralbekov, Raphael Schneider
Summary: A new method for the single source molecular precursor synthesis of quinary Ag-In-Ga-Zn-S (AIGZS) quantum dots has been presented. The AIGZS quantum dots emitted light from the visible to the near-infrared region with high photoluminescence quantum yields. The optical properties and emission tunability of AIGZS quantum dots make them highly promising for various applications.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Perizat Galiyeva, Herve Rinnert, Sabine Bouguet-Bonnet, Sebastien Leclerc, Lavinia Balan, Halima Alem, Sebastien Blanchard, Jordane Jasniewski, Ghouti Medjahdi, Bolat Uralbekov, Raphael Schneider
Summary: This study reports the synthesis of Mn2+-doped Ag-In-Ga-Zn-S (Mn:AIGZS) QDs, which exhibit high PL quantum yield, stability, and potential for PL/MRI dual imaging applications.
Article
Chemistry, Multidisciplinary
Salima Mabrouk, Herve Rinnert, Lavinia Balan, Jordane Jasniewski, Sebastien Blanchard, Ghouti Medjahdi, Rafik Ben Chaabane, Raphael Schneider
Summary: In this study, 3-mercaptopropionic acid (3-MPA)-capped core/shell/shell ZnSeS/Cu:ZnS/ZnS QDs were synthesized in aqueous phase. The influence of Cu dopant location and loading on the photoluminescence properties of the QDs was investigated. The results showed that introducing Cu dopant in the first ZnS shell led to QDs with the highest PL quantum yield. Additionally, the emission color shifted from blue-green to green with increased Cu doping.
Article
Chemistry, Physical
Maroua Mrad, Bilel Chouchene, Tahar Ben Chaabane, Thomas Gries, Ghouti Medjahdi, Lavinia Balan, Raphael Schneider
Summary: Heterostructured photocatalysts combining ZnO nanorods sensitized by quaternary Ag-In-Zn-S quantum dots show high activity in the bleaching of Acid Orange 7 dye under visible light irradiation. The catalyst with 10 wt% AIZS QDs exhibits the highest activity and stability.
Article
Engineering, Environmental
Seydou Ouedraogo, Bilel Chouchene, Thomas Gries, Christophe Desmarets, Lavinia Balan, Jean-Jacques Gaumet, Ghouti Medjahdi, Karifa Bayo, Raphael Schneider
Summary: The heterostructured photocatalyst BiOBr/rGO/ZnPc(CO2H)(4)(0.25) exhibits superior photocatalytic activity due to enhanced visible light absorption and charge carrier separation. Superoxide radicals and holes are found to be the main active species involved in the degradation of Orange II dye and phenol. The catalyst shows high stability and holds great potential for environmental remediation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Nanoscience & Nanotechnology
Etienne Caillosse, Mohamed Zaier, Mariam Mezghani, Samar Hajjar-Garreau, Loic Vidal, Daniel Lougnot, Lavinia Balan
ACS APPLIED NANO MATERIALS
(2020)
