Article
Chemistry, Physical
Wenxiao Zhang, Xu Sun, Zheng Sun, Liang Shi, Fanglin Du, Xiaofei Qu
Summary: In this study, a Bi2S3/Bi2O2CO3/Bi3O4Cl ternary heterojunction was successfully constructed for the photocatalytic degradation of CIP and RhB. The introduction of Bi2S3 significantly improved the photocatalytic performance of Bi3O4Cl, making Bi2S3/Bi2O2CO3/Bi3O4Cl a promising candidate for the development of high-performance Bi-ternary heterojunctions.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Chaniphon Sunkhunthod, Arreerat Jiamprasertboon, Anurak Waehayee, Panupol Untarabut, Praphaiphon Phonsuksawang, Teera Butburee, Suwit Suthirakun, Theeranun Siritanon
Summary: Photocatalysis is an effective method to reduce antibiotic contamination in water. In this study, a FeOx/Fe-Bi2O2CO3 system was prepared and used for tetracycline photodegradation. The incorporation of Fe in the Bi2O2CO3 lattice and the deposition of FeOx nanoparticles resulted in the preferential growth of active facets for photocatalytic reactions and increased visible light absorption. The combination of Fe doping and FeOx deposition significantly enhanced the tetracycline photodegradation performance compared to pristine Bi2O2CO3.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Kelin Liu, Xingyue Shen, Haonan Shen, Kun Jiang, Tongming Sun, Miao Wang
Summary: Novel BiVO4 hollow nanotubes were synthesized using L-Aspartic acid (L-Asp) as a structure-directing agent via a hydrothermal method. The morphologies and crystalline structures of the synthesized BiVO4 were influenced by the dosage of L-Asp and the pH value. The photocatalytic performance of the BiVO4 nanotubes showed a high degradation efficiency of about 90% in 50 minutes under UV-light irradiation due to their hollow architectures and higher specific surface areas, which increase reactive sites, shorten carrier transfer paths, and improve light absorption ability.
Article
Chemistry, Physical
Lingsong Wang, Huanshun Yin, Suo Wang, Jun Wang, Shiyun Ai
Summary: Bi/BiOCl/Bi2O2CO3 heterojunction with enhanced photocatalytic activity was prepared via one-step hydrothermal process under the synergistic catalysis of Ni2+, showing promising application potential in environmental remediation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Electrical & Electronic
Qiao Chen, Xuefang Lan, Guihua Zhu, Lili Wang, Jinsheng Shi
Summary: The study presents a facile one-step redox reaction to fabricate Bi2O2CO3/Bi2O3/Bi ternary composite, with ethylene glycol used as both the solvent and reductant. Through the optimization of component proportions, the ternary composites demonstrate enhanced photocatalytic efficiencies under simulated solar light, attributed to the accelerated migration rate of charge carriers resulting from the construction of heterojunction and decoration of cocatalyst.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
V Maheskumar, Yan-Ming Lin, Zhenyi Jiang, B. Vidhya, Anujit Ghosal
Summary: This study presents a comparative analysis of the photocatalytic efficiency of S-doped BiVO4 at the bulk and surface facets, revealing that the introduction of S 3p energy level can significantly reduce the band gap, enhance photocatalytic activity, and lead to noticeable changes in optical absorption.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Chemistry, Physical
Chuanyan Zhang, Xianchun Yu, Haowei Chen, Luanyu Li, Delin Sun, Xinyi Chen, Xiaofeng Hao
Summary: By preparing blocky woodceramics electrodes from discard pine and employing hydrothermal activation and MnO2 deposition, a three-dimensional network structure can be achieved to improve the performance of energy storage. The addition of Mn introduces pseudocapacitance, leading to enhanced electrochemical performance, with a specific capacitance 3.5 times higher than the sample without MnO2.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Siavash Bakhtiarnia, Saeed Sheibani, Eric Aubry, Hui Sun, Pascal Briois, Mohammad Arab Pour Yazdi
Summary: This study successfully synthesized Ag-incorporated BiVO4 thin films using a novel reactive magnetron sputtering technique, and investigated the effect of Ag incorporation on the photocatalytic properties. The thin film with 24% Ag showed superior photocatalytic performance under visible light at neutral pH, indicating promising applications in industrial wastewater treatment.
APPLIED SURFACE SCIENCE
(2022)
Article
Environmental Sciences
Ruohan Zhao, Bing Wang, Xueyang Zhang, Xinqing Lee, Miao Chen, Qianwei Feng, Shiwan Chen
Summary: This study demonstrates the effective removal of Cr(VI) using the coal gangue-rape straw biochar (CG-RS) composite, providing a new approach for the resource utilization of solid waste.
Article
Engineering, Electrical & Electronic
Baoyu Miao, Yanyang Chu, Xianglei Zheng, Hongzhao Su
Summary: In this study, novel visible-light-driven composite photocatalysts (Sb2WO6/Bi2WO6) were prepared by the one-step hydrothermal method. The composite photocatalysts showed superior photocatalytic activity towards RhB and MO degradation compared to single phase Sb2WO6 and Bi2WO6, with the mechanism attributed to enhanced visible-light absorbance, inhibition of electron-hole pair recombination, and increased specific surface area. This study provided a simple method to construct a highly efficient composite photocatalyst for dye wastewater treatment without organic solvents.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Chemistry, Physical
Hongchen Song, Jing Sun, Tingting Shen, Lang Deng, Xikui Wang
Summary: Bi/BiVO4 with excellent photocatalytic performance was synthesized for the degradation of residual ciprofloxacin. The introduction of Bi led to higher charge separation efficiency and increased generation of active free radicals. High-performance liquid chromatography-mass spectrometry was used to investigate the degradation pathway of CIP and propose a possible mechanism.
Article
Biochemistry & Molecular Biology
Yuling Liu, Shengxia Duan, Jian Liu, Xiaomin Jin, Fengqiang Dong, Guangge Shi, Qingsheng Wu
Summary: One-dimensional shaving-like BiVO4 nanobelts were synthesized and characterized. The nanobelts showed excellent photocatalytic activity due to their special morphology and narrow band gap.
Article
Chemistry, Multidisciplinary
Hongjie Tan, Zuzhen Huang, Yun Wang, Lexian Sang, Lichang Wang, Fuchao Jia, Fazhe Sun, Xiaomei Wang
Summary: Sea urchin-like hierarchical p-CuO/n-ZnO heterostructures were fabricated through a one-step chemical bath deposition method, and their morphologies and crystal structures were characterized. The influence of CuO content on the photocatalytic performance was also evaluated.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Construction & Building Technology
E. Luevano-Hipolito, L. M. Torres-Martinez, M. S. Vega-Mendoza, Mayra Z. Trevino-Garza, Jose Manuel Vazquez-Guillen, Juan G. Baez Gonzalez, Cristina Rodriguez-Padilla
Summary: Alkali-activated materials (AAMs) produced with industrial solid wastes have been designed and evaluated as functionalized photocatalysts for environmental remediation. The results demonstrate the self-cleaning, air-purifying, and antimicrobial activities of the functionalized AAMs.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Minghao Liu, Yongxian Chen, Daguang Li, Shoubin Huang, Zheng Fang, Zhenjun Xiao, Haijin Liu, Ping Chen, Wenying Lv, Guoguang Liu
Summary: A novel BiVO4 photocatalyst decorated with boron nitride quantum dots (BNQDs), designated as BQBVO, was synthesized via a simple deposition approach. The 0.3BQBVO catalyst exhibited a 5.3-fold enhancement in its ability to degrade naproxen (NPX) under visible light irradiation compared to pure BiVO4. The incorporation of BNQDs accelerated charge carrier transference and O-2(-) played a critical role during NPX degradation. Potential NPX degradation pathways were deduced by analyzing the transformation products via HRAM LC-MS/MS. This research provides theoretical guidance for designing a promising strategy for NPX-contaminated water degradation using BiVO4.
ENVIRONMENTAL SCIENCE-NANO
(2023)
Article
Dentistry, Oral Surgery & Medicine
Cesar Augusto Abreu-Pereira, Marlise Inez Klein, Carmelia Isabel Vitorino Lobo, Ana Luiza Gorayb Pereira, Claudia Carolina Jordao, Ana Claudia Pavarina
Summary: This study evaluated the effectiveness of DNase I combined with antimicrobial photodynamic therapy against biofilms formed by a fluconazole-resistant Candida albicans strain. The results showed that DNase treatment combined with aPDT could significantly reduce cell viability and the components of the biofilm.
Article
Environmental Sciences
Roger Borges, Lilian Fernanda Martins do Amaral, Vitoria Palhares Ribeiro, Christiane Abreu de Oliveira- Paiva, Fernando Wypych, Caue Ribeiro
Summary: This study proposes a mechanochemical method to use asbestos fibers from raw chrysotile and asbestos cement as a nutrient source for agriculture. By applying citric acid, the fibers are disrupted and calcium/magnesium citrates are formed through ion migration. Experimental results show that these citrates stimulate the soil microbiota and correct acid soil pH as readily available carbon source, similar to commercial limestone.
WASTE AND BIOMASS VALORIZATION
(2023)
Article
Chemistry, Physical
Juliana. A. A. Torres, Andre E. Nogueira, Gelson T. S. T. da Silva, Caue Ribeiro
Summary: The influence of heat treatment and decoration of SnO2 with gold nanoparticles on CO2 photoreduction process was analyzed. Both treatments had a deleterious effect on the reactions, with a significant drop in methane production under UV radiation. However, under visible radiation, the decorated SnO2 showed plasmonic resonance and produced methane with small amounts of carbon monoxide. These results demonstrate that the surface characteristics of SnO2 are responsible for its catalytic activity, despite its unfavorable band structure for CO2 reduction.
Article
Environmental Sciences
Bruno Ramos, Wesley F. Vaz, Luan F. Diniz, Flavio O. Sanches Neto, Julio C. O. Ribeiro, Valter H. Carvalho-Silva, Antonio Carlos S. C. Teixeira, Caue Ribeiro, Hamilton B. Napolitano, Paulo S. Carvalho Jr
Summary: The excessive use of pesticides and the demand for environmentally friendly compounds have driven detailed studies on the environmental fate of these compounds. In this study, the mechanism of acid hydrolysis of the herbicide ametryn (AMT) was investigated, and the toxicities of its metabolites were predicted through experimental and theoretical approaches. The hydrolysis of AMT under acidic conditions resulted in the formation of hydroxyatrazine (HA) as the main product. The tautomerization reactions favored the conversion of AMT to HA. The kinetics of the reaction revealed that the dissociation of CH3SH was the rate-controlling step in the degradation process, leading to a half-life of 7 to 24 months under typical acid soil conditions.
Article
Chemistry, Physical
Jose D. C. Geovo, Juliana A. Torres, Amanda S. Giroto, Fernanda C. N. Rocha, Marilia M. Garcia, Gelson T. S. T. Silva, Joelma R. C. Souza, Jessica A. de Oliveira, Caue Ribeiro, Andre E. Nogueira
Summary: The conversion of CO2 into valuable chemical feedstock through photocatalysis is considered an effective strategy to mitigate global warming and energy supply problems. In this study, mesoporous composite materials based on MCM-41 and CuO were synthesized and their photocatalytic activity in the reduction of CO2 was evaluated. The results showed that MCM-41 and the composite MCM-41/CuO have significant potential for use in the CO2 photoreduction process, with high selectivity and production of methanol.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Chemistry, Physical
Marcela Pfeifer, Ricardo Bortoletto-Santos, Flavio A. C. Andrade, Sidney J. L. Ribeiro, Fauze A. Aouada, Caue Ribeiro
Summary: Improper disposal of metal-containing wastes harms the environment and human health. This study investigates the sorption and desorption of Cr6+, Cu2+, and Mn2+ by modifying polyacrylamide/methylcellulose hydrogels with bentonite or hydrotalcite. The nanocomposite produced by calcining hydrotalcite at 550 degrees C exhibits the best retention properties.
APPLIED CLAY SCIENCE
(2023)
Article
Electrochemistry
Jian F. S. Pereira, Larissa M. A. Melo, Luciano C. Arantes, Pedro H. S. Borges, Lucas Faria, Kelly F. da Cunha, Karla A. O. Souza, William O. Sote, Jose Luiz Costa, Edson Nossol, Rogerio Gelamo, Eduardo M. Richter, Moacyr Comar Jr, Wallans T. P. dos Santos, Osmando F. Lopes, Rodrigo A. A. Munoz
Summary: This study presents a new sensing platform for MDMA detection - affordable graphite sheet (GS) electrodes. By using cold plasma surface treatment, the electrochemical response of MDMA has been improved. The treated GS electrodes demonstrated a higher surface area and lower resistance to charge transfer. Differential pulse voltammetry achieved a linear range from 0.5 to 15.0 mu mol L-1 with a low limit of detection (0.09 mu mol L-1). Computational simulations confirmed higher interaction between plasma-treated GS surface and MDMA, explaining the improved sensing properties. The method showed high selectivity and successfully detected MDMA in human saliva and seized samples.
ELECTROCHIMICA ACTA
(2023)
Article
Materials Science, Multidisciplinary
Gelson T. S. T. da Silva, Osmando F. Lopes, Ariadne C. Catto, Antonio Otavio T. Patrocinio, Alexandre Mesquita, Caue Ribeiro, Waldir Avansi Jr, Luis F. da Silva
Summary: In this study, the influence of hydrothermal treatment temperature on the structures of SnO2 nanoparticles as photocatalysts and photoanodes was investigated. The results showed that the structural order of SnO2 NPs increased with the hydrothermal temperature. The hydrothermal treatment also increased the amount of hydroxyl groups on the SnO2 NPs surface. The photocatalytic activity of the NPs was affected by the hydrothermal treatment temperature, with crystallinity and surface hydroxyl groups playing a significant role.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Analytical
Jian F. S. Pereira, Marina Di-Oliveira, Lucas V. Faria, Pedro H. S. Borges, Edson Nossol, Rogerio V. Gelamo, Eduardo M. Richter, Osmando F. Lopes, Rodrigo A. A. Munoz
Summary: A cold CO2 plasma treatment was shown to improve the electrochemical activity of graphite sheet (GS) electrodes by increasing surface defects and oxygenated functional groups. This treatment significantly enhanced the electron transfer coefficient and reduced the resistance to charge transfer. The CO2-GS electrode demonstrated high sensitivity for the detection of emerging contaminant species in natural waters and urine samples, with submicromolar limit of detection values achieved.
Article
Materials Science, Multidisciplinary
Stella F. Valle, Amanda S. Giroto, Caue Ribeiro
Summary: Phosphaterock and struvite dispersion in a polysulfide matrix provides a sustainable alternative for phosphorous fertilization, as it can enhance P dissolution and control its release, while also serving as a sulfur fertilizer. The study investigates the permeability mechanism and factors affecting P diffusion from PS composites. The results show that the PS composites exhibit higher P release and availability in soil compared to pure ST.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Engineering, Environmental
Roger Borges, Lilian Fernanda Martins do Amaral, Thalita Jessika Bondancia, Rilton Alves de Freitas, Fernando Wypych, Caue Ribeiro
Summary: Cellulose acetate can be recovered and reused through mechanochemical activation and treatment with citric acid and H2O2. Ca(OH)2 can hydrolyze acetate groups, while CaCO3 can reduce particle size while keeping the acetate functional groups. The resulting cellulose nanoparticles can be used in Pickering emulsions with slight differences in droplet sizes.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Review
Chemistry, Physical
Marcos Eduardo G. Carmo, Laura Spies, Gabriela N. N. Silva, Osmando F. F. Lopes, Thomas Bein, Jenny Schneider, Antonio Otavio T. Patrocinio
Summary: Solar-driven photochemical CO2 reduction over semiconducting materials is crucial for sustainable development as it provides renewable fuels and helps combat environmental problems. However, challenges related to selectivity, conversion efficiency, and long-term stability need to be addressed. This review highlights recent advances in understanding the relationship between CO2 conversion efficiency and photocatalyst properties, as well as the design of organic-inorganic hybrids for enhanced CO2 reduction.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Marlete A. Souza, Marcela P. Bernardo, Higor O. Alves, Cleiton P. M. Silva, Antonio Otavio T. Patrocinio, Osmando F. Lopes
Summary: This study investigates the effect of synthesis parameters on the physical-chemical properties and photocatalytic performance of Nb2O5. The parameters were found to influence the crystalline phase, morphology, and specific surface area of Nb2O5. Nb2O5 samples synthesized by hydrothermal method showed smaller size, homogeneous particles, higher specific surface area, and surface hydroxylation. The samples exhibited activity in degrading organic pollutants and producing H2, with the specific surface area and surface hydroxylation playing a key role. The most active sample for organic pollutant degradation also showed activity in H2 production, which was further enhanced by Pt nanoparticle decoration.
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Ricardo Marques e Silva, Fernanda de Lourdes Souza, Eduardo Dias, Gelson Tiago dos Santos Tavares da Silva, Florymar Escalona Duran, Arjun Rego, Drew Higgins, Caue Ribeiro
Summary: Partial oxidation of methane into hydrocarbons using photoelectrochemical routes is attractive for sustainable development. The use of semiconductor heterostructures can improve charge separation and enhance the efficiency of methane activation and oxidation. In this study, TiO2:SnO2 heterojunction catalysts exhibited superior performance in methane oxidation due to the formation of heterostructure type II, which facilitates the separation of electron-hole pairs and promotes the generation of reactive oxygens.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
