ACS Omega最新文献

{"title":"Unveiling the Role of Ultrasonication Variables on Lignin-Containing Cellulose Nanocrystal Dispersion in Poly(ethylene oxide)-Based Suspension and Resulting Morphology and Mechanical Properties","authors":"Amirmohammad Raeisi,&nbsp;Ismat Ara,&nbsp;Greg Holt and Dilpreet Bajwa*,&nbsp;","doi":"10.1021/acsomega.4c0685410.1021/acsomega.4c06854","DOIUrl":"https://doi.org/10.1021/acsomega.4c06854https://doi.org/10.1021/acsomega.4c06854","url":null,"abstract":"<p >The biodegradability, abundant availability, and outstanding intrinsic properties of cellulose nanocrystals (CNCs) make them suitable candidates for functionalizing polymer materials. Lignin is another abundant material in nature and is a remarkable UV-blocking agent. Hence, their combination can produce a material with multifunctional properties. However, the self-assembling ability of CNCs can make it challenging to develop their well-dispersed suspension in polymer-based aqueous solutions. However, it is essential to identify the effective ultrasonication parameters to obtain the desired particle sizes and morphology. This study investigated the role of ultrasonication treatment in dispersing lignin-containing CNCs (L-CNCs) within the water-soluble poly(ethylene oxide) (PEO). The aqueous suspensions were prepared by dispersing L-CNC in 1 wt % of PEO solution, where varying ultrasonication times (3, 6, and 9 min) and different amplitudes (50 and 100%) were employed. The morphology, particle size, and dispersion of L-CNCs were analyzed by using zeta potential analysis, and scanning electron microscopy. Mechanical and physical properties were also assessed through dynamic mechanical analysis, differential scanning calorimetry and fourier transform infrared spectroscopy. The results indicated that an increase in sonication time and amplitude could significantly influence the dispersion of L-CNCs within the PEO polymer matrix, as evidenced by the increase in the zeta potential. Increased sonication time and amplitude improved dispersion and reduced the size and number of agglomerations. Ultrasonication at 100% amplitude for 9 min resulted in a 400% and more increase in the storage modulus of composite films. The comprehensive results obtained from this study aim to enhance our understanding of optimal ultrasonication parameters, contributing to an improved L-CNC dispersion and enhanced composite material performance.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 9","pages":"9018–9027 9018–9027"},"PeriodicalIF":3.7,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c06854","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143590513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on Flow Field Evolution Law of Goaf in Fully Mechanized Caving Face and Gel Air Leakage Blocking Technology under Withdrawal Condition","authors":"Shuliang Xie,&nbsp;Chuanbao Dong*,&nbsp;Xianglan Liu,&nbsp;Lianpo Li,&nbsp;Gang Wang and Ruida Hao,&nbsp;","doi":"10.1021/acsomega.4c0892910.1021/acsomega.4c08929","DOIUrl":"https://doi.org/10.1021/acsomega.4c08929https://doi.org/10.1021/acsomega.4c08929","url":null,"abstract":"<p >During the retreat period of the fully mechanized coal mining face underground, the intensity of air leakage is high and the distribution of residual coal is widespread, which exacerbate the risk of spontaneous combustion of residual coal in the goaf: particle flow code (PFC) and computational fluid dynamics (CFD). The results showed that during the retreat period of the working face, the collapse of the goaf roof gradually stabilized and the “O” ring reached its maximum range. The porosity distribution was between 0.611 and 0.625, which first decreased and then increased with the depth of the goaf, showing a “bowl”-shaped distribution. Connected fracture development zones are formed around the goaf. The intensity of air leakage on both sides of the goaf is relatively high, with air leakage speeds ranging from 0.25 to 0.3 m/s. As the inlet air speed decreases, the range of airflow diffusion in the goaf also decreases. After the flexible composite net and gel measures are taken, the maximum air leakage velocity is 0.07 m/s, about 1/3 of that when no measures are taken, the widest air leakage range in the goaf is reduced to 23 m, the CO in the upper corner of the working face is gradually reduced from 16 to 0 ppm, and the temperature is reduced from 33.9 to 28.5 °C. The research results have important guiding significance for the fire prevention and extinguishing work during the retreat period of the working face.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 9","pages":"9390–9401 9390–9401"},"PeriodicalIF":3.7,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c08929","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143590584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation and Performance Study of 3D-Printed Glass Bead Insulation Mortar","authors":"Jun Wang*,&nbsp;Zhenhua Liu,&nbsp;Boyi Zhao,&nbsp;Jiasheng Zhao and Xuanzheng Zhang,&nbsp;","doi":"10.1021/acsomega.4c0641310.1021/acsomega.4c06413","DOIUrl":"https://doi.org/10.1021/acsomega.4c06413https://doi.org/10.1021/acsomega.4c06413","url":null,"abstract":"<p >In this article, based on concrete 3D printing technology, a glass bead insulation mortar that can be used for 3D printing is prepared by an orthogonal experimental design method. The effects of the glue-sand ratio, water-cement ratio, fly ash dosage, slaked lime dosage, and rubber powder dosage on the mortar’s printability, mechanical properties, and thermal insulation properties, are analyzed in detail. The results show that fluidity is an important parameter to characterize the printability of thermal insulation mortar, and it was found that the mortar has good printability when the fluidity range is 150–170 mm. Fly ash and slaked lime can replace part of the silicate cement, and the appropriate amount of mixing fly ash and slaked lime can not only improve the fluidity of the thermal insulation mortar but also has the role of saving resources and protecting the environment. For the materials and equipment used in this study, through the vertical comparison of different levels of a single factor of printing performance, it can be seen that the printability of the thermal insulation mortar is best when the water-cement ratio is 2.7, the glue-sand ratio is 0.9, the dosage of fly ash is 20%, the dosage of slaked lime is 5%, and the dosage of rubber powder is 2%.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 9","pages":"8971–8979 8971–8979"},"PeriodicalIF":3.7,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c06413","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143590965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Theoretical Investigation of Stacked Two-Dimensional Transition-Metal Dichalcogenide Materials: The Role of Chemical Species and Number of Monolayers","authors":"Jean M. Bracht,&nbsp;Mateus B. P. Querne,&nbsp;Juarez L. F. Da Silva and Matheus P. Lima*,&nbsp;","doi":"10.1021/acsomega.4c0542310.1021/acsomega.4c05423","DOIUrl":"https://doi.org/10.1021/acsomega.4c05423https://doi.org/10.1021/acsomega.4c05423","url":null,"abstract":"<p >We report a theoretical investigation, based on density functional theory calculations, of the role of chalcogen species and the number of monolayers in the physical–chemical properties of multilayer two-dimensional transition-metal dichalcogenides (TMDs, MQ₂), where M belongs to groups 8 and 10 of the periodic table, Q = S, Se, or Te, and the multilayer is composed of 1 to 6 layers. From the analysis of structural energetic, and electronic properties, we found significant changes in lattice parameters and exfoliation energies as a function of the number of layers, particularly affected by the chalcogen Q species. The TMDs in group 8 exhibit similar lattice parameters for the same choice of chalcogens, making them suitable for constructing commensurate heterostructures, while the crystal phase and the lattice parameter of the TMDs in group 10 strongly depend on the choice of the transition-metal species. Furthermore, the decreasing trend of electronegativity from S to Te results in stronger exfoliation energies due to lower surface charges, thus governing the structural and electronic characteristics of few-layer TMDs. We find unexpected electronic characteristics, such as band gap increases driven by spin–orbit coupling for certain compositions, the emergence of polarization electric fields due to point inversion symmetry breaking, and semiconductor-to-metal transitions with minimal layer additions to the monolayer. The presence of sulfur improves the sensitivity of the surface properties, enabling precise tuning of band edge positions with the layer number.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 9","pages":"8922–8934 8922–8934"},"PeriodicalIF":3.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c05423","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143590553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of the Dodecanoate Anion on Thermal Stability and Decomposition Mechanism of Mono- and Dicationic Ionic Liquids","authors":"Jean C. B. Vieira*,&nbsp;Marcos A. Villetti,&nbsp;Caroline R. Bender and Clarissa P. Frizzo,&nbsp;","doi":"10.1021/acsomega.4c1059610.1021/acsomega.4c10596","DOIUrl":"https://doi.org/10.1021/acsomega.4c10596https://doi.org/10.1021/acsomega.4c10596","url":null,"abstract":"<p >This work presents the synthesis of mono- and dicationic ionic liquids (ILs) that combine the cations 1-butyl-3-methylimidazolium ([C₄MIM]⁺), 1-decyl-3-methylimidazolium ([C₁₀MIM]⁺), 1,4-bis(3-methylimidazolium-1-yl)butane ([C₄(MIM)₂]²⁺), and 1,10-bis(3-methylimidazolium-1-yl)decane ([C₁₀(MIM)₂]²⁺) with the anion dodecanoate ([C₁₁COO]⁻), along with a study into their thermal stability and mechanism for thermal decomposition. Thermal stability was investigated using the Kissinger–Akahira–Sunose (KAS) isoconversional method to determine the isoconversional activation energies (E<i>_α</i>) and compensation effect to calculate the pre-exponential factor (ln <i>A</i>_<i>α</i>). The results showed that there was no significant difference in the thermal stabilities between the ILs, with all compounds being thermally stable up to 450 K. The thermal decomposition mechanism was analyzed using nuclear magnetic resonance (NMR), electrospray ionization mass spectrometry (ESI-MS), and thermogravimetric analysis coupled with Fourier-transform infrared spectroscopy (TGA-FTIR). The main decomposition pathways were nucleophilic substitution at the lateral or spacer chain and the methyl group.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 9","pages":"9514–9526 9514–9526"},"PeriodicalIF":3.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c10596","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143590861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bioengineered Injectable Hydrogel Based on the Dentin Extracellular Matrix and Chitosan","authors":"Sajdah Arbeed,&nbsp;Maya Osman,&nbsp;Feng Gao,&nbsp;Stephen Suchy,&nbsp;Zinat Sharmin,&nbsp;Joshua Z. Gasiorowski,&nbsp;Amber Kaminski,&nbsp;Ira M. Sigar and Marcela R. Carrilho*,&nbsp;","doi":"10.1021/acsomega.4c0941310.1021/acsomega.4c09413","DOIUrl":"https://doi.org/10.1021/acsomega.4c09413https://doi.org/10.1021/acsomega.4c09413","url":null,"abstract":"<p >The extracellular matrix of dentin contains macromolecules of biological value that make it a natural source for the prospection of novel smart biomaterials. Here, we described the development of an injectable thermosensitive smart hydrogel resulting from the blending of insoluble macromolecules of the dentin matrix and chitosan. The extrudability and gelation parameters of the prehydrogel were optimized by varying the concentration of individual components. Three-dimensional constructs were fabricated upon injection of the prehydrogel into custom-made molds, followed by incubation at 37 °C. Specimens were characterized for spectral, physical, morphological, mechanical, and biocompatibility features. Fourier-transform infrared (FTIR) analyses confirmed the integration of the dentin organic matrix and chitosan. The degree of porosity of constructs was ∼51%. The water diffusion of constructs reached a plateau after 2 days. Their moduli of elasticity were at a low MPa order, decreasing after storage in simulated body fluid (SBF). The biodegradability of constructs rose following incubation in SBF containing lysozyme or zinc ions. Hydrogel bioactivity was confirmed by FTIR and ultramorphologically suggested by surface precipitates. Hydrogel constructs were shown to be biocompatible with undifferentiated pulp cells (OD-21). Overall, the novel engineered injectable hydrogel based on dentin extracellular macromolecules and chitosan holds promising features for use as a scaffold for the regeneration of damaged load-bearing tissues like dentin and bone.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 9","pages":"9210–9223 9210–9223"},"PeriodicalIF":3.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c09413","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143590544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated Proteomics and Lipidomics Analysis of Hippocampus to Reveal the Metabolic Landscape of Epilepsy","authors":"Yinyu Chen,&nbsp;Qianyun Nie,&nbsp;Tao Song,&nbsp;Xing Zou,&nbsp;Qifu Li* and Peng Zhang*,&nbsp;","doi":"10.1021/acsomega.4c1008510.1021/acsomega.4c10085","DOIUrl":"https://doi.org/10.1021/acsomega.4c10085https://doi.org/10.1021/acsomega.4c10085","url":null,"abstract":"<p >Epilepsy encompasses a spectrum of chronic brain disorders characterized by transient central nervous system dysfunctions induced by recurrent, aberrant, synchronized neuronal discharges. Hippocampal sclerosis (HS) is identified as the predominant pathological alteration in epilepsy, particularly in temporal lobe epilepsy. This study investigates the metabolic profiles of epileptic hippocampal tissues using proteomics and lipidomics techniques. An epilepsy model was established in Sprague–Dawley (SD) rats via intraperitoneal injection of pentylenetetrazole (PTZ), with hippocampal tissue samples subsequently extracted for histopathological examination. Proteomics analysis was conducted using isobaric tags for relative and absolute quantitation (iTRAQ) combined with liquid chromatography-tandem mass spectrometry (LC-MS/MS), while lipidomics analysis employed ultrahigh-performance liquid chromatography quadrupole time-of-flight mass spectrometry (UHPLC Q-TOF/MS). Proteomic analysis identified 144 proteins with significant differential expression in acute epileptic hippocampal tissue and 83 proteins in chronic epileptic hippocampal tissue. Key proteins, including neurofilament heavy (Nefh), vimentin (Vim), gelsolin (Gsn), NAD-dependent protein deacetylase (Sirt2), 2′,3′-cyclic-nucleotide 3′-phosphodiesterase (Cnp), myocyte enhancer factor 2D (Mef2d), and Cathepsin D (Ctsd), were pivotal in epileptic hippocampal tissue injury and validated through parallel reaction monitoring (PRM). Concurrently, lipid metabolomics analysis identified 32 metabolites with significant differential expression in acute epileptic hippocampal tissue and 61 metabolites in chronic epileptic hippocampal tissue. Bioinformatics analysis indicated that glycerophospholipid (GP) metabolism, glycosylphosphatidylinositol (GPI)-anchor biosynthesis, and glycerolipid (GL) metabolism were crucial in epileptic hippocampal tissue injury. Integrated proteomics and lipidomics analysis revealed key protein–lipid interactions in acute and chronic epilepsy and identified critical pathways such as sphingolipid signaling, autophagy, and calcium signaling. These findings provide deeper insights into the pathophysiological mechanisms of epileptic hippocampal tissue damage, potentially unveiling novel therapeutic avenues for clinicians.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 9","pages":"9351–9367 9351–9367"},"PeriodicalIF":3.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c10085","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143590878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Danhong Injection Inhibits Apoptosis in Ischemia/Reperfusion Injury Based on Network Pharmacology Analysis, Molecular Docking, and Experimental Verification","authors":"Shennan Shi,&nbsp;Yalan Lu,&nbsp;Qiwen Long,&nbsp;Yanqing Wu,&nbsp;Yan Guo,&nbsp;Nipi Chen,&nbsp;Haitong Wan and Bo Jin*,&nbsp;","doi":"10.1021/acsomega.4c1086810.1021/acsomega.4c10868","DOIUrl":"https://doi.org/10.1021/acsomega.4c10868https://doi.org/10.1021/acsomega.4c10868","url":null,"abstract":"<p >Danhong injection (DHI), a Chinese patent compound injection, is widely used in the treatment of cardiovascular diseases (CVD) in China. However, the underlying mechanisms have not been fully elucidated. This study investigated the therapeutic effect and the underlying mechanisms of DHI against ischemia-reperfusion (I/R) injury and endothelial dysfunction (ED). Network pharmacology analysis revealed that DHI had six core active compounds (Danshensu, salvianolic acid A, salvianolic acid B, rosmarinic acid, protocatechualdehyde, and caffeic acid) and 19 potential targets in treating I/R injury. Notably, the regulation of apoptosis was significantly enriched, as indicated by the results of the gene ontology (GO) enrichment analysis. Molecular docking studies confirmed that these targets had high affinity with the active compounds of DHI. Finally, experimental validation in vivo and in vitro demonstrated that DHI could mitigate I/R injury and ED, potentially by reducing oxidative damage through the inhibition of apoptosis via the PTEN/AKT pathway. These findings significantly advance our understanding of the molecular mechanisms in DHI treatment and contribute further to promoting the clinical application of CVD.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 9","pages":"9604–9612 9604–9612"},"PeriodicalIF":3.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c10868","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143590463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deep Learning-Assisted Triboelectric Sensor for Complex Gesture Recognition","authors":"Ping Zhang*,&nbsp;Weimeng Pan,&nbsp;Zhihao Li and Baocheng Liu,&nbsp;","doi":"10.1021/acsomega.4c1015010.1021/acsomega.4c10150","DOIUrl":"https://doi.org/10.1021/acsomega.4c10150https://doi.org/10.1021/acsomega.4c10150","url":null,"abstract":"<p >With the rapid development of the Internet of Things (IoT) and 5G technology, there has been a considerable increase in demand for self-powered and flexible sensors. However, existing solutions frequently prove inadequate regarding flexibility, energy efficiency, and the accuracy with which gestures can be recognized, particularly in noncontact operation scenarios. As a result, there is a need for innovative developments in sensor technology. This study proposes an artificial intelligence-based gesture recognition system comprising a triboelectric sensor ring, an Arduino signal processing module, and a deep learning module. Our approach enables the direct reading of triboelectric signals by Arduino through integrated circuits, thereby maintaining the output voltage of triboelectric signals within the input range of commonly used microcontrollers. The integration of triboelectric technology with sophisticated deep learning methodologies, notably the utilization of a one-dimensional convolutional neural network (CNN), has enabled the development of a system that exhibits an accuracy rate exceeding 95% in the recognition of 12 distinct gestures. This study demonstrates the prospective utility of triboelectric sensors in the realms of gesture recognition, wearable technology, and human–machine interaction.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 9","pages":"9381–9389 9381–9389"},"PeriodicalIF":3.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c10150","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143590542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Boosting Photocatalytic Activity in Rhodamine B Degradation Using Cu-Doped ZnO Nanoflakes","authors":"Jeerawan Khumphon,&nbsp;Ramzan Ahmed,&nbsp;Tanawat Imboon,&nbsp;Jayant Giri,&nbsp;Nattaporn Chattham,&nbsp;Faruq Mohammad,&nbsp;Sutasinee Kityakarn*,&nbsp;Veeramani Mangala Gowri* and Sirikanjana Thongmee*,&nbsp;","doi":"10.1021/acsomega.4c1003410.1021/acsomega.4c10034","DOIUrl":"https://doi.org/10.1021/acsomega.4c10034https://doi.org/10.1021/acsomega.4c10034","url":null,"abstract":"<p >The present investigation examined how substituting some Cu²⁺ ions for Zn²⁺ ions could increase zinc oxide (ZnO) photocatalytic activity toward the reduction of Rhodamine B. Phase composition, the presence of functional groups, optical properties, emission spectra, and surface morphology of ZnO nanoflakes (NFs) were evaluated using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), UV–visible spectroscopy (UV–vis), photoluminescence (PL) spectrophotometer, and scanning electron microscopy (SEM). To investigate the photocatalytic capabilities of Cu-doped ZnO NFs driven by visible light/sunlight, Rhodamine B dyes were photocatalytically degraded in water using UV–visible absorption spectroscopy. Using Williamson-Hall analysis of the XRD data, it was discovered that the internal strain of the Cu-doped ZnO NFs was altered. UV–vis absorption showed that the energy gap of the semiconducting ZnO NFs shrank when Cu was substituted. FT-IR studies revealed that the surface of the Cu-doped ZnO NFs contained greater amounts of reactive oxidizing species. PL studies revealed that the ZnO NFs’ surface defects were being caused by the Cu substitution. According to SEM research, more surface fault NFs formed when the concentration of Cu increased. The photocatalytic activity was enhanced by the production of these NFs. The UV–vis absorption spectra showed that Cu-doped ZnO NFs were more effective than pure ZnO at degrading the rhodamine B dye (RhB). Finally, it was shown that replacing Zn²⁺ ions with Cu²⁺ ions improved the photodegradation of the rhodamine B dye. According to this study, Cu-doped ZnO NFs are an excellent choice for wastewater treatment.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 9","pages":"9337–9350 9337–9350"},"PeriodicalIF":3.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c10034","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143590545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}