Article
Chemistry, Analytical
Steven A. Diaz, David W. Mccamant
Summary: By improving the collection optics, we have developed two new diffuse reflectance-based femtosecond stimulated Raman spectroscopy (drFSRS) techniques for collecting Raman spectra of opaque systems. The experimental results demonstrate the current capabilities of collecting high-quality Raman spectra using drFSRS.
ANALYTICAL CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Abdul Halim Hamdany, Alfrendo Satyanaga, Dichuan Zhang, Yongmin Kim, Jong R. Kim
Summary: This review presents the applications of photocatalytic TiO2 in cement composite materials, discussing the basic mechanism and factors affecting photocatalytic performance. However, cementitious materials containing TiO2 also face challenges such as decreasing surface area and mass transfer limitations.
APPLIED SCIENCES-BASEL
(2022)
Article
Materials Science, Ceramics
Shipra Choudhary, Manisha Sharma, Venkata Krishnan, Satyabrata Mohapatra
Summary: This study successfully prepared magnetically separable CoFe2O4-ZnO hybrid nanostructures and characterized their structure and morphology using various techniques. CoFe2O4-ZnO exhibited significantly enhanced photocatalytic performance compared to pristine CoFe2O4 due to its high light utilization ability and heterojunction formation that delayed charge carrier recombination. The study provides an efficient solution for sunlight-responsive magnetically separable CoFe2O4-ZnO photocatalyst in wastewater purification.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Jessica De Santis, Valentina Paolucci, Luigi Stagi, Davide Carboni, Luca Malfatti, Carlo Cantalini, Plinio Innocenzi
Summary: The design of functional coatings for touchscreens and haptic interfaces is crucial in electronic devices. This study developed photoactivated anti-fingerprint coatings by incorporating 2D-SnSe2 nanoflakes into ordered mesoporous titania thin films. The resulting heterostructures showed enhanced ability to remove fingerprints and improved photocatalytic activity. The addition of SnSe2 did not affect the self-assembly process and the three-dimensional pore structure of the films. Furthermore, exposure of the films to sunlight and UV light completely eliminated fingerprints, suggesting potential applications in self-cleaning mechanisms.
Article
Biochemical Research Methods
Gleb S. Budylin, Denis A. Davydov, Nadezhda Zlobina, Alexey Baev, Vyacheslav G. Artyushenko, Boris P. Yakimov, Evgeny A. Shirshin
Summary: Quantitative assessment of water content in tissues is vital for biomedicine. Different optical spectroscopy methods were compared for characterizing cutaneous edema, showing promising results for introducing quantitative optical water measurement technology to clinical settings.
JOURNAL OF BIOPHOTONICS
(2022)
Article
Chemistry, Analytical
Maria Cristina Caggiani, Roberta Occhipinti, Claudio Finocchiaro, Maura Fugazzotto, Antonio Stroscio, Paolo Mazzoleni, Germana Barone
Summary: This study evaluated the potential of Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS) in the study of geopolymers, and used Principal Components Analysis (PCA) to find criteria for discriminating successful products from those that require formulation correction.
Article
Chemistry, Multidisciplinary
Rashed Aleisa, Ji Feng, Zuyang Ye, Yadong Yin
Summary: This study reports the synthesis of surface-functionalized N-doped TiO2 nanocrystals that rapidly change color from whitish to black under low-power irradiation and exhibit excellent color stability in atmospheric conditions. These nanocrystals show great potential for color-switching applications, especially in the development of rewritable paper with excellent writing and erasing reversibility.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Ermelinda Falletta, Anna Bruni, Marta Sartirana, Daria C. Boffito, Giuseppina Cerrato, Alessia Giordana, Ridha Djellabi, Erfan S. Khatibi, Claudia L. Bianchi
Summary: The development of innovative polyurethane-polyaniline/TiO2 modified floating materials for sorption and photodegradation of rhodamine B from water matrix under solar light irradiation was reported. The materials were fabricated with inexpensive and easy approaches and characterized properly. The photoactive floating PANI/TiO2 composites were found to be useful alternatives to common powder photocatalysts for the degradation of cationic dyes.
Article
Energy & Fuels
Zepeng Wang, Zhaolong Ge, Ruihui Li, Zhe Zhou, Yudong Hou, Hui Zhang
Summary: The chemical structure of coal has a significant impact on coalbed methane mining. The study found that the functional groups of coal decrease by approximately 30% with increasing temperature. VES fracturing fluids can destroy the functional groups of coal, with high temperature and pressure weakening their destructive impact, while deionized water enhances the destruction. The coupling effect of high temperature and VES fracturing fluid makes the macromolecular structure of coal more ordered.
Article
Physics, Condensed Matter
F. H. ALkallas, T. A. AL-Rebdi, Sh. A. Mansour
Summary: A simple sonochemical hydrolysis method was used to synthesize dysprosium-doped titania nanopowder, resulting in an anatase phase with small crystallite size. Optical properties varied with Dysprosium content, and high NIR reflectance values were attributed to surface morphology and small particle size. Additionally, samples with low Dy content showed reduced reflectance in visible light, potentially reducing glare from reflected sunlight.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Construction & Building Technology
Tangwei Mi, Jianghong Mao, Yunhong Cai, Shuqiong Luo, Xianfeng Wang, Meilin Xiao, Haiyan Zhu, Kai Yang, Jun Ren
Summary: This paper applies Raman spectroscopy to trace the repairing process in cementitious paste. By characterising the traditional UF/epoxy microcapsule, the spectra of microcapsule shell and core in cementitious matrix are identified and established. A newly designed microcapsule with anatase in the core is developed to improve the detection precision and efficiency. Raman spectroscopy successfully detects the breakage of microcapsule due to cracking, offering a promising approach for detecting the repairing behavior of self-healing microcapsules in cementitious materials.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Instruments & Instrumentation
Max Dooley, Thomas Paterson, Louise Dexter, Pavel Matousek, Hamid Dehghani, Ioan Notingher
Summary: Spatially offset Raman spectroscopy (SORS) is a powerful technique for subsurface molecular analysis of optically turbid samples. Numerical modeling and experimental validation have shown that offsetting the laser source and detector in opposite directions can significantly improve spectral contrast and signal to noise ratio.
APPLIED SPECTROSCOPY
(2022)
Article
Chemistry, Multidisciplinary
Robin R. Jones, Cornelia Miksch, Hyunah Kwon, Coosje Pothoven, Kristina R. Rusimova, Maarten Kamp, Kedong Gong, Liwu Zhang, Tim Batten, Brian Smith, Alejandro V. Silhanek, Peer Fischer, Daniel Wolverson, Ventsislav K. Valev
Summary: Against the backdrop of current healthcare and climate emergencies, surface enhanced Raman scattering (SERS) is gaining popularity as a technique for identifying and fingerprinting molecules in various substances. Researchers have investigated plasmonic nanohelices and found that they possess excellent SERS properties. These nanohelices can be produced at a low cost, exhibit strong and uniform Raman enhancement effects, and are anticipated to have broad applications in surface enhanced Raman spectroscopies and material science.
ADVANCED MATERIALS
(2023)
Article
Soil Science
Murray B. McBride
Summary: Reflectance spectroscopy in VNIR range is used to measure soil properties, but lacks accuracy compared to conventional testing methods. Correlations between spectral features and chemical properties may be indirect, and complex regression models used for predictions could overstate accuracy. While useful for general trends, these spectroscopic methods are not reliable enough to fully replace traditional soil testing.
EUROPEAN JOURNAL OF SOIL SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Aleksei O. Murzin, Anna Yu. Samsonova, Constantinos C. Stoumpos, Nikita I. Selivanov, Alexei V. Emeline, Yury V. Kapitonov
Summary: Halide perovskites and their low-dimensional analogs are promising semiconductor materials for various photonics applications. This paper proposes a method using diluted diffuse reflectance spectroscopy to obtain the full-range absorption spectrum from halide perovskite powders, and demonstrates its practical importance.
Article
Chemistry, Physical
Lynn M. Betts, Frederic Dappozze, Chantal Guillard
APPLIED CATALYSIS A-GENERAL
(2018)
Article
Materials Science, Multidisciplinary
Stephanie Pigeot-Remy, Damia Gregori, Roumayssaa Hazime, Alexandre Herissan, Chantal Guillard, Corinne Ferronato, Sophie Cassaignon, Christophe Colbeau-Justin, Olivier Durupthy
JOURNAL OF MATERIALS SCIENCE
(2019)
Article
Chemistry, Multidisciplinary
Nidhal Fessi, Mohamed Faouzi Nsib, Yves Chevalier, Chantal Guillard, Frederic Dappozze, Ammar Houas, Leonardo Palmisano, Francesco Parrino
Article
Chemistry, Multidisciplinary
Jie Yu, Juying Lei, Lingzhi Wang, Chantal Guillard, Jinlong Zhang, Yongdi Liu, Masakazu Anpo
RESEARCH ON CHEMICAL INTERMEDIATES
(2019)
Article
Chemistry, Physical
Annika Holm, Marwa Hamandi, France Simonet, Bernadette Jouguet, Frederic Dappozze, Chantal Guillard
APPLIED CATALYSIS B-ENVIRONMENTAL
(2019)
Article
Chemistry, Physical
Annika Holm, Marwa Hamandi, Karima Sahel, Frederic Dappozze, Chantal Guillard
Article
Chemistry, Physical
Jie Yu, Angel Caravaca, Chantal Guillard, Philippe Vernoux, Liang Zhou, Lingzhi Wang, Juying Lei, Jinlong Zhang, Yongdi Liu
Summary: A highly efficient photocatalyst for degrading toluene has been developed, capable of converting 93% of toluene into non-toxic products. This enhanced performance is attributed to the inverse opal structure and the incorporation of carbon nitride quantum dots.
Article
Chemistry, Physical
Jie Yu, Frederic Dappozze, Juan Martin-Gomez, Jesus Hidalgo-Carrillo, Alberto Marinas, Philippe Vernoux, Angel Caravaca, Chantal Guillard
Summary: The valorization of glycerol into high added-value products by photocatalysis not only creates good economic benefits, but also meets global low-carbon and energy-saving environmental protection needs. This study found that WO3-based materials exhibit outstanding selectivity towards valuable oxidation products like glyceraldehyde, establishing a new starting point for the development of advanced materials for efficient glycerol valorization.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Editorial Material
Chemistry, Physical
Chantal Guillard, Didier Robert
Article
Chemistry, Multidisciplinary
Nicolas Crespo-Monteiro, Marwa Hamandi, Maria Alejandra Usuga Higuita, Chantal Guillard, Frederic Dappozze, Damien Jamon, Francis Vocanson, Yves Jourlin
Summary: Surface micro-nanostructuring can enhance the photocatalytic efficiency of sol-gel TiO2 coatings during formic acid degradation, leading to improved functionality and properties. Different factors, such as annealing temperature and layer thickness, can affect the degradation process.
Article
Biochemistry & Molecular Biology
Insaf Abdouli, Frederic Dappozze, Marion Eternot, Chantal Guillard, Nadine Essayem
Summary: This paper provides evidence that the model reaction of aqueous dihydroxyacetone (DHA) conversion is influenced by both the acidity and basicity of TiO2 catalysts. Different products are obtained through two parallel pathways.
Article
Chemistry, Physical
Nouha Mediouni, Frederic Dappozze, Lhoussain Khrouz, Stephane Parola, Abdesslem Ben Haj Amara, Hafsia Ben Rhaiem, Nicole Jaffrezic-Renault, Philippe Namour, Chantal Guillard
Summary: This study investigated the generation of hydrogen peroxide on commercial and synthesized ZnO from different precursors using model molecules and phenolic intermediates. The results showed that the improved efficiency of ZnO photocatalysis is related to the production of H2O2, the reduction of oxygen vacancies, and the similar number of moles of H2O2 formed per number of carbon atoms removed.
Article
Chemistry, Physical
Jie Yu, Jesus Gonzalez-Cobos, Frederic Dappozze, Nicolas Grimaldos-Osorio, Philippe Vernoux, Angel Caravaca, Chantal Guillard
Summary: In this study, a pioneering photoelectrolyser with a non-noble metal-based photoanode (WO3) was designed, tested and optimized for the valorization of glycerol. The system operated in near-neutral conditions using a proton-exchange membrane (PEM) and selectively oxidized glycerol on the anode while producing purified hydrogen on the cathode. The influence of light irradiation, external bias and cell temperature on the production rates of glyceraldehyde (GAD), dihydroxyacetone (DHA) and hydrogen was investigated, and the long-term stability of the photoelectrolyser was validated.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Multidisciplinary
Juliette Karpiel, Pierre Lonchambon, Frederic Dappozze, Ileana Florea, Diana Dragoe, Chantal Guillard, Nathalie Herlin-Boime
Summary: In an attempt to produce alkenes efficiently, a photocatalytic process has been developed to selectively obtain ethylene from propionic acid degradation. Copper oxide-modified titanium dioxide nanoparticles were synthesized using laser pyrolysis, and the synthesis atmosphere strongly influenced the morphology and selectivity of the photocatalysts towards different hydrocarbons and H2 products. Under a helium environment, highly dispersed copper species in CuxOy/TiO2 promoted the production of C2H6 and H2, while under an argon environment, copper oxides organized into distinct nanoparticles favored the production of C2H4, with selectivity as high as 85% compared to 1% with pure TiO2.
Article
Biochemistry & Molecular Biology
L. M. Betts, F. Dappozze, M. Hamandi, C. Guillard
Summary: The decomposition of ethanol under green conditions for the synthesis of acetal was investigated using TiO2 activated under UV-A radiation. The nature of TiO2 and the presence of Pt were found to affect the formation of acetal and acetaldehyde. Rutile TiO2 without noble metal increased acetal formation, while Pt deposition facilitated acetal formation at lower concentrations of acetaldehyde.
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2022)
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)