FlatChem最新文献

英文中文

MXenes in combination therapy: Chemo-photothermal, chemodynamic, and photothermal/photodynamic therapies for cancer treatment and antibacterial applications

IF 5.9 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-03-11 DOI: 10.1016/j.flatc.2025.100849

Masoomeh Amoozadeh , Atefeh Zarepour , Arezoo Khosravi , Siavash Iravani , Ali Zarrabi

Two-dimensional MXenes and their derivatives have attracted significant attention in recent years for their potential applications in combination therapies, specifically in chemo-photothermal, chemodynamic, and photothermal/photodynamic treatments. MXenes offer distinct advantages in combination therapies due to their exceptional electrical conductivity, hydrophilicity, large surface area, tunable surface chemistry, and ability to enhance drug delivery and therapeutic efficacy through multifunctional applications. By incorporating MXenes into combination therapies, researchers have demonstrated enhanced therapeutic efficacy through synergistic mechanisms that improve drug delivery, increase localized heating, and amplify the generation of reactive oxygen species, thereby effectively targeting and eliminating cancer cells or contaminations. However, stability in biological environments remains a primary concern, as degradation can compromise their therapeutic effectiveness and safety. Ensuring biocompatibility is crucial, since the introduction of MXenes and their composites may trigger immune responses or cytotoxicity. Moreover, optimizing the synthesis of high-quality MXenes with uniform properties remains a logistical challenge, affecting reproducibility and scalability for clinical applications. By consolidating existing knowledge and identifying future directions, this review aims to advance MXene-based combination chemo-photothermal, chemodynamic, and photothermal/photodynamic therapies for cancer treatment and antibacterial applications, ultimately paving the way for innovative strategies in biomedicine and personalized medicine.

{"title":"MXenes in combination therapy: Chemo-photothermal, chemodynamic, and photothermal/photodynamic therapies for cancer treatment and antibacterial applications","authors":"Masoomeh Amoozadeh , Atefeh Zarepour , Arezoo Khosravi , Siavash Iravani , Ali Zarrabi","doi":"10.1016/j.flatc.2025.100849","DOIUrl":"10.1016/j.flatc.2025.100849","url":null,"abstract":"<div><div>Two-dimensional MXenes and their derivatives have attracted significant attention in recent years for their potential applications in combination therapies, specifically in chemo-photothermal, chemodynamic, and photothermal/photodynamic treatments. MXenes offer distinct advantages in combination therapies due to their exceptional electrical conductivity, hydrophilicity, large surface area, tunable surface chemistry, and ability to enhance drug delivery and therapeutic efficacy through multifunctional applications. By incorporating MXenes into combination therapies, researchers have demonstrated enhanced therapeutic efficacy through synergistic mechanisms that improve drug delivery, increase localized heating, and amplify the generation of reactive oxygen species, thereby effectively targeting and eliminating cancer cells or contaminations. However, stability in biological environments remains a primary concern, as degradation can compromise their therapeutic effectiveness and safety. Ensuring biocompatibility is crucial, since the introduction of MXenes and their composites may trigger immune responses or cytotoxicity. Moreover, optimizing the synthesis of high-quality MXenes with uniform properties remains a logistical challenge, affecting reproducibility and scalability for clinical applications. By consolidating existing knowledge and identifying future directions, this review aims to advance MXene-based combination chemo-photothermal, chemodynamic, and photothermal/photodynamic therapies for cancer treatment and antibacterial applications, ultimately paving the way for innovative strategies in biomedicine and personalized medicine.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"51 ","pages":"Article 100849"},"PeriodicalIF":5.9,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Artificial intelligence-driven data generation for temperature-dependent current–voltage characteristics of diodes

IF 5.9 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-03-10 DOI: 10.1016/j.flatc.2025.100847

Betül Ersöz , Ali Öter , Zeynep Berktaş , Halil İbrahim Bülbül , Antonio Di Bartolomeo , Şeref Sağıroğlu , Elif Orhan

Artificial intelligence has the potential to develop models that accurately predict the behavior of electronic devices under various operating conditions. Such models allow researchers to conduct precise performance evaluations during the design phase, reducing development time and costs. For instance, by analyzing the effects of current, voltage, and temperature on diode performance, these models can shorten the diode development cycle and promote sustainable industry growth. In this study, a nanocomposite diode based on lanthanum-doped polyethyleneimine-functionalized graphene quantum dots was fabricated to investigate the impact of temperature on diode performance. The diode's current–voltage characteristics were measured experimentally over a temperature range of 77–400 K. These measurements were used to train machine learning algorithms. Specifically, K-Nearest Neighbors, Decision Trees, and Gradient Boosting were employed to predict current–voltage characteristics at temperatures lacking experimental data. The performance of these models was evaluated using metrics such as the coefficient of determination, mean squared error, and mean absolute error. Among the models, Gradient Boosting demonstrated the highest accuracy, achieving a coefficient of determination of 0.9998, a mean squared error of 0.0026, and a mean absolute error of 0.0222, though accuracy varied with temperature. To test the accuracy of the predicted values, experimental measurements were repeated for the corresponding temperatures, confirming the model's performance. The findings indicate that artificial intelligence-assisted, temperature-dependent data generation can enhance the development of a sustainable diode industry by reducing energy consumption.

{"title":"Artificial intelligence-driven data generation for temperature-dependent current–voltage characteristics of diodes","authors":"Betül Ersöz , Ali Öter , Zeynep Berktaş , Halil İbrahim Bülbül , Antonio Di Bartolomeo , Şeref Sağıroğlu , Elif Orhan","doi":"10.1016/j.flatc.2025.100847","DOIUrl":"10.1016/j.flatc.2025.100847","url":null,"abstract":"<div><div>Artificial intelligence has the potential to develop models that accurately predict the behavior of electronic devices under various operating conditions. Such models allow researchers to conduct precise performance evaluations during the design phase, reducing development time and costs. For instance, by analyzing the effects of current, voltage, and temperature on diode performance, these models can shorten the diode development cycle and promote sustainable industry growth. In this study, a nanocomposite diode based on lanthanum-doped polyethyleneimine-functionalized graphene quantum dots was fabricated to investigate the impact of temperature on diode performance. The diode's current–voltage characteristics were measured experimentally over a temperature range of 77–400 K. These measurements were used to train machine learning algorithms. Specifically, K-Nearest Neighbors, Decision Trees, and Gradient Boosting were employed to predict current–voltage characteristics at temperatures lacking experimental data. The performance of these models was evaluated using metrics such as the coefficient of determination, mean squared error, and mean absolute error. Among the models, Gradient Boosting demonstrated the highest accuracy, achieving a coefficient of determination of 0.9998, a mean squared error of 0.0026, and a mean absolute error of 0.0222, though accuracy varied with temperature. To test the accuracy of the predicted values, experimental measurements were repeated for the corresponding temperatures, confirming the model's performance. The findings indicate that artificial intelligence-assisted, temperature-dependent data generation can enhance the development of a sustainable diode industry by reducing energy consumption.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"51 ","pages":"Article 100847"},"PeriodicalIF":5.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143636982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interfacial thermal resistance modulation in low-dimensional graphene/boron nitride Heterostructures for energy harvesting applications

IF 5.9 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-03-09 DOI: 10.1016/j.flatc.2025.100846

Muhammad Ejaz Khan , Muhammad Aamir , Chen Ming , Yi-Yang Sun , Yong-Hyun Kim

Controlling heat flow across hybrid material interfaces is a critical challenge for enhancing performance of nanoscale devices. This study achieves an ultra-high interfacial thermal resistance modulation in graphene/boron nitride (G/BN) heterostructures by investigating interfacial chirality and quantum confinement effects. Through density functional theory (DFT) calculations and a non-equilibrium Green's function (NEGF) approach, we analyze heat transport across zigzag and armchair heterojunctions of G and BN in one-dimensional (1D) nanoribbons and two-dimensional (2D) nanosheets. Our results show a remarkable 540 % modulation of interfacial thermal resistance in 1D interfaces at room temperature, driven by phonon transmission gaps in the acoustic region that significantly reduce thermal conduction. In 2D G/BN heterointerfaces, we observe a thermal resistance modulation exceeding 270 %, attributed to structural strain and limited atomic vibrations near interfaces, causing increased scattering and reduced phonon transmission. This study highlights mechanisms underlying heat transport in low-dimensional G/BN heterostructures and demonstrates their significant potential for advanced thermal management in nanoscale electronic and energy harvesting devices.

{"title":"Interfacial thermal resistance modulation in low-dimensional graphene/boron nitride Heterostructures for energy harvesting applications","authors":"Muhammad Ejaz Khan , Muhammad Aamir , Chen Ming , Yi-Yang Sun , Yong-Hyun Kim","doi":"10.1016/j.flatc.2025.100846","DOIUrl":"10.1016/j.flatc.2025.100846","url":null,"abstract":"<div><div>Controlling heat flow across hybrid material interfaces is a critical challenge for enhancing performance of nanoscale devices. This study achieves an ultra-high interfacial thermal resistance modulation in graphene/boron nitride (G/BN) heterostructures by investigating interfacial chirality and quantum confinement effects. Through density functional theory (DFT) calculations and a non-equilibrium Green's function (NEGF) approach, we analyze heat transport across zigzag and armchair heterojunctions of G and BN in one-dimensional (1D) nanoribbons and two-dimensional (2D) nanosheets. Our results show a remarkable 540 % modulation of interfacial thermal resistance in 1D interfaces at room temperature, driven by phonon transmission gaps in the acoustic region that significantly reduce thermal conduction. In 2D G/BN heterointerfaces, we observe a thermal resistance modulation exceeding 270 %, attributed to structural strain and limited atomic vibrations near interfaces, causing increased scattering and reduced phonon transmission. This study highlights mechanisms underlying heat transport in low-dimensional G/BN heterostructures and demonstrates their significant potential for advanced thermal management in nanoscale electronic and energy harvesting devices.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"51 ","pages":"Article 100846"},"PeriodicalIF":5.9,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143636981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficient, high-yield, ionized biopolymer-mediated fabrication of exfoliated MoSe2 nanosheets with reversible dispersion properties in water

IF 5.9 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-03-09 DOI: 10.1016/j.flatc.2025.100844

Kumasser Kusse Kuchayita , Hsu-Sheng Li , Masatoshi Tokita , Chih-Chia Cheng

Using the environmentally friendly, water-soluble, biopolymer sodium-ion-grafted chitosan (Na-CMC), we achieved efficient exfoliation of bulk molybdenum diselenide (MoSe₂) into water-dispersible two-dimensional (2D) exfoliated nanosheets with tunable physical properties and multifunctional characteristics. We successfully developed Na-CMC through a simple, one-step synthetic process. Na-CMC exhibits high solubility and self-assembly properties in water, has strong affinity for the surface of MoSe₂, and assists exfoliation of MoSe₂ crystals in water on ultrasonic treatment. As the self-assembled Na-CMC structures tightly adhere to the surface of the nanosheets and confer excellent long-term dispersion stability in water, the exfoliated nanosheets possess several unique physical properties, including control over the content of the exfoliated nanosheets, the highest yield of up to 2.05 mg/mL, uniform few-layered sheet structures, and distinctive surface microstructural morphology. Importantly, Na-CMC/MoSe₂ solution can be converted into a stably preserved solid sample by freeze-drying, and easily redispersed in water through simple stirring. The redispersed solution maintains the same structure and physical properties as the original Na-CMC/MoSe₂ solution, even after multiple freeze-drying/redispersion cycles. The development of this efficient exfoliation technique for 2D nanomaterials based on a bio-based functional polymer offers significant potential to advance the processing and application of 2D nanomaterials.

{"title":"Efficient, high-yield, ionized biopolymer-mediated fabrication of exfoliated MoSe2 nanosheets with reversible dispersion properties in water","authors":"Kumasser Kusse Kuchayita , Hsu-Sheng Li , Masatoshi Tokita , Chih-Chia Cheng","doi":"10.1016/j.flatc.2025.100844","DOIUrl":"10.1016/j.flatc.2025.100844","url":null,"abstract":"<div><div>Using the environmentally friendly, water-soluble, biopolymer sodium-ion-grafted chitosan (Na-CMC), we achieved efficient exfoliation of bulk molybdenum diselenide (MoSe<sub>2</sub>) into water-dispersible two-dimensional (2D) exfoliated nanosheets with tunable physical properties and multifunctional characteristics. We successfully developed Na-CMC through a simple, one-step synthetic process. Na-CMC exhibits high solubility and self-assembly properties in water, has strong affinity for the surface of MoSe<sub>2</sub>, and assists exfoliation of MoSe<sub>2</sub> crystals in water on ultrasonic treatment. As the self-assembled Na-CMC structures tightly adhere to the surface of the nanosheets and confer excellent long-term dispersion stability in water, the exfoliated nanosheets possess several unique physical properties, including control over the content of the exfoliated nanosheets, the highest yield of up to 2.05 mg/mL, uniform few-layered sheet structures, and distinctive surface microstructural morphology. Importantly, Na-CMC/MoSe<sub>2</sub> solution can be converted into a stably preserved solid sample by freeze-drying, and easily redispersed in water through simple stirring. The redispersed solution maintains the same structure and physical properties as the original Na-CMC/MoSe<sub>2</sub> solution, even after multiple freeze-drying/redispersion cycles. The development of this efficient exfoliation technique for 2D nanomaterials based on a bio-based functional polymer offers significant potential to advance the processing and application of 2D nanomaterials.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"51 ","pages":"Article 100844"},"PeriodicalIF":5.9,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143611152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and properties of the PDMS/h-BN/PDA composite anti-corrosion coating on a carbon steel surface

IF 5.9 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-03-01 DOI: 10.1016/j.flatc.2025.100839

Zhonglin Xiao, Shaochun Li, Zhijun Liu, Anjie Zhou, Yongjuan Geng, Kaixuan Zhang, Yancen Liu, Xiaoyu Zhang

Polydimethylsiloxane (PDMS) is applied as an anti-corrosion coating to the surface of carbon steel which is prone to peeling and damage during use. In this study, hexagonal boron nitride (h - BN) was non - covalently modified with polydopamine to prepare polydopamine - modified boron nitride (h - BN/PDA), which was then incorporated into polydimethylsiloxane (PDMS) to fabricate a PDMS/h - BN/PDA composite coating. The results revealed that the average friction coefficient of the modified composite coating was 0.43, the adhesion strength reached 0.61 MPa, and the performance was excellent in salt spray and electrochemical impedance tests. The incorporation of h-BN/PDA improved the defect issues of the PDMS coatings and enhanced the overall performance characteristics of the PDMS coatings.

引用次数: 0

Synthesis of porous MXene for efficient bifunctional electrocatalysis in overall water splitting: Hydrogen and oxygen evolution reactions

IF 5.9 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-03-01 DOI: 10.1016/j.flatc.2025.100837

Sudeshana Pandey , Mukesh Ghimire , Taemin Kim , MooYoung Jung , Sankaiya Asaithambi , Wan Jae Dong , Ji-Won Son , Yong Ju Yun , Yongseok Jun

Electrocatalytic water splitting is a key process for sustainable energy generation, but its large-scale implementation is hindered by the slow kinetics of the hydrogen evolution (HER) and oxygen evolution reactions (OER). This study introduces a design strategy for two-dimensional (2-D) MXene and porous MXene (P-MXene) nanostructures to enhance water splitting efficiency. By employing advanced etching and structural engineering, P-MXene nano structures with optimized porosity and increased surface area are fabricated, which improving the active site density and promoting rapid ion diffusion. Electrochemical characterizations demonstrate significantly reduced overpotentials and enhanced current densities for both HER and OER, consistently, P-MXene catalyst resulted in the overpotential reduction suggestively by 45 mV for HER and 110 mV for OER at anodic and cathodic current density of 10 m A cm⁻², compared to MXene, surpassing traditional noble-metal catalysts. Furthermore, the P-MXene/NF device delivers the stable current density of 10 mA cm⁻² for overall water splitting at 1.54 V and retained 92.2 % efficiency after 24 h. This work highlights the potential of porous MXene nanostructures in electrocatalysis, offering a scalable approach for the development of bifunctional electrocatalysts for next-generation energy conversion systems.

{"title":"Synthesis of porous MXene for efficient bifunctional electrocatalysis in overall water splitting: Hydrogen and oxygen evolution reactions","authors":"Sudeshana Pandey , Mukesh Ghimire , Taemin Kim , MooYoung Jung , Sankaiya Asaithambi , Wan Jae Dong , Ji-Won Son , Yong Ju Yun , Yongseok Jun","doi":"10.1016/j.flatc.2025.100837","DOIUrl":"10.1016/j.flatc.2025.100837","url":null,"abstract":"<div><div>Electrocatalytic water splitting is a key process for sustainable energy generation, but its large-scale implementation is hindered by the slow kinetics of the hydrogen evolution (HER) and oxygen evolution reactions (OER). This study introduces a design strategy for two-dimensional (2-D) MXene and porous MXene (P-MXene) nanostructures to enhance water splitting efficiency. By employing advanced etching and structural engineering, P-MXene nano structures with optimized porosity and increased surface area are fabricated, which improving the active site density and promoting rapid ion diffusion. Electrochemical characterizations demonstrate significantly reduced overpotentials and enhanced current densities for both HER and OER, consistently, P-MXene catalyst resulted in the overpotential reduction suggestively by 45 mV for HER and 110 mV for OER at anodic and cathodic current density of 10 m A cm<sup>−2</sup>, compared to MXene, surpassing traditional noble-metal catalysts. Furthermore, the P-MXene/NF device delivers the stable current density of 10 mA cm<sup>−2</sup> for overall water splitting at 1.54 V and retained 92.2 % efficiency after 24 h. This work highlights the potential of porous MXene nanostructures in electrocatalysis, offering a scalable approach for the development of bifunctional electrocatalysts for next-generation energy conversion systems.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"50 ","pages":"Article 100837"},"PeriodicalIF":5.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143551450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The catalytic performance of Bi2WO6-Fe3O4/rGO for the removal of rhodamine B under visible light

IF 5.9 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-03-01 DOI: 10.1016/j.flatc.2025.100838

Meghdad Pirsaheb , Borhan Mansouri , Zeinab Jafari

The aim of this work was to study the catalytic performance of Bi₂WO₆-Fe₃O₄/rGO on the rhodamine B degradation using H₂O₂ activation with visible light. Characteristics of the Bi₂WO₆-Fe₃O₄/rGO catalyst were analyzed via various techniques. The results displayed that the optimum conditions (16 mg L⁻¹ pollutant, nanocomposite value 0.8 g L⁻¹, 2.6 mM H₂O₂, pH 5), the elimination efficiency of rhodamine B 96 % was obtained after 40 min. Moreover, the radical scavenger experiments confirmed that hydroxyl radical (OH^•) and superoxide radical (O₂^∙-) contributed to the pollutant degradation, and OH^• has a dominant role. In addition, Bi₂WO₆-Fe₃O₄/rGO exhibited the good stability and reusability. This study illustrated that the simultaneous presence of Bi₂WO₆-Fe₃O₄/rGO with H₂O₂ has a high potential for the degradation of organic pollutant.

{"title":"The catalytic performance of Bi2WO6-Fe3O4/rGO for the removal of rhodamine B under visible light","authors":"Meghdad Pirsaheb , Borhan Mansouri , Zeinab Jafari","doi":"10.1016/j.flatc.2025.100838","DOIUrl":"10.1016/j.flatc.2025.100838","url":null,"abstract":"<div><div>The aim of this work was to study the catalytic performance of Bi<sub>2</sub>WO<sub>6</sub>-Fe<sub>3</sub>O<sub>4</sub>/rGO on the rhodamine B degradation using H<sub>2</sub>O<sub>2</sub> activation with visible light. Characteristics of the Bi<sub>2</sub>WO<sub>6</sub>-Fe<sub>3</sub>O<sub>4</sub>/rGO catalyst were analyzed via various techniques. The results displayed that the optimum conditions (16 mg L<sup>−1</sup> pollutant, nanocomposite value 0.8 g L<sup>−1</sup>, 2.6 mM H<sub>2</sub>O<sub>2</sub>, pH 5), the elimination efficiency of rhodamine B 96 % was obtained after 40 min. Moreover, the radical scavenger experiments confirmed that hydroxyl radical (OH<sup>•</sup>) and superoxide radical (O<sub>2</sub><sup>∙-</sup>) contributed to the pollutant degradation, and OH<sup>•</sup> has a dominant role. In addition, Bi<sub>2</sub>WO<sub>6</sub>-Fe<sub>3</sub>O<sub>4</sub>/rGO exhibited the good stability and reusability. This study illustrated that the simultaneous presence of Bi<sub>2</sub>WO<sub>6</sub><strong>-</strong>Fe<sub>3</sub>O<sub>4</sub>/rGO with H<sub>2</sub>O<sub>2</sub> has a high potential for the degradation of organic pollutant.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"50 ","pages":"Article 100838"},"PeriodicalIF":5.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143551453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High areal capacity and energy density 3D-printed Li-ion battery enabled by silver nanoparticles embedded in cross-linked activated carbon/reduced graphene oxide

IF 5.9 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-03-01 DOI: 10.1016/j.flatc.2025.100842

Jean Pierre Mwizerwa , Chao Zhi , Haotian Wu , Lijun Xu , Changyong Liu , Wenfei Lu , Jun Shen

Creating lithium-ion batteries (LIBs) with high areal capacity and energy density remains a significant challenge. Thick electrodes with increased thickness show a potential attitude toward improved areal capacity. However, the energy density of thick electrodes is hindered by poor electrolyte infiltration and charge/ion transportation. This study employed material extrusion (ME) technology to fabricate a thick 3D-printed electrodes incorporating highly conductive silver nanoparticles (AgNPs), cross-linked activated carbon-reduced graphene oxides (ACrGO), and Li₄Ti₅O₁₂ (LTO) particles as the functional ink. ACrGO, which is integrated with a conductive AgNP network, facilitates charge and ion transport in 3D-printed electrodes with abundant channels, and imparts high electrical conductivity. A 3D-printed AC@rGO-AgNPs-LTO anode with a thickness of 350 μm demonstrated a high discharge capacity of 197.8 mAh g⁻¹ at 0.1C, 141.9 mAh g⁻¹ at 1C, and maintained 84.3 % of its capacity after 200 cycles, and achieved an areal capacity of 7.0 mAh cm⁻² with a high mass loading of 53.25 mg cm⁻² (1112 μm). Coupled with a high-voltage 3D printed LiNi_0.8Co_0.1Mn_0.1O₂ (NCM811) cathode, a full cell delivers energy densities of 791.40 Wh kg⁻¹ and 2131.86 Wh L⁻¹. This research offers a promising approach for developing high-performance thick electrodes for LIBS requiring high energy density.

{"title":"High areal capacity and energy density 3D-printed Li-ion battery enabled by silver nanoparticles embedded in cross-linked activated carbon/reduced graphene oxide","authors":"Jean Pierre Mwizerwa , Chao Zhi , Haotian Wu , Lijun Xu , Changyong Liu , Wenfei Lu , Jun Shen","doi":"10.1016/j.flatc.2025.100842","DOIUrl":"10.1016/j.flatc.2025.100842","url":null,"abstract":"<div><div>Creating lithium-ion batteries (LIBs) with high areal capacity and energy density remains a significant challenge. Thick electrodes with increased thickness show a potential attitude toward improved areal capacity. However, the energy density of thick electrodes is hindered by poor electrolyte infiltration and charge/ion transportation. This study employed material extrusion (ME) technology to fabricate a thick 3D-printed electrodes incorporating highly conductive silver nanoparticles (AgNPs), cross-linked activated carbon-reduced graphene oxides (ACrGO), and Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub> (LTO) particles as the functional ink. ACrGO, which is integrated with a conductive AgNP network, facilitates charge and ion transport in 3D-printed electrodes with abundant channels, and imparts high electrical conductivity. A 3D-printed AC@rGO-AgNPs-LTO anode with a thickness of 350 μm demonstrated a high discharge capacity of 197.8 mAh g<sup>−1</sup> at 0.1C, 141.9 mAh g<sup>−1</sup> at 1C, and maintained 84.3 % of its capacity after 200 cycles, and achieved an areal capacity of 7.0 mAh cm<sup>−2</sup> with a high mass loading of 53.25 mg cm<sup>−2</sup> (1112 μm). Coupled with a high-voltage 3D printed LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> (NCM811) cathode, a full cell delivers energy densities of 791.40 Wh kg<sup>−1</sup> and 2131.86 Wh L<sup>−1</sup>. This research offers a promising approach for developing high-performance thick electrodes for LIBS requiring high energy density.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"50 ","pages":"Article 100842"},"PeriodicalIF":5.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel environmentally benign dual Z-scheme SrTiO3/g-C3N4/ZnO heterojunction for efficient H2 evolution and polluted water treatment: Optimization, mechanism interpretations and toxicity assessment

IF 5.9 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-03-01 DOI: 10.1016/j.flatc.2025.100841

Mutairah S. Alshammari , Waqed H. Hassan , Murtadha M. Al-Zahiwat , Haitham Osman , Heba A. El-Sabban , M.A. Diab , Zukhra Atamuratova , Elyor Saitov , Abdelfattah Amari

In this study, a novel and robust ternary SrTiO₃/g-C₃N₄/ZnO (STCZ) photocatalyst was synthesized and characterized for its efficiency in photocatalytic hydrogen production and tetracycline (TC) degradation under visible light illumination. The ternary composite was prepared by incorporating an optimized 40 %-SrTiO₃/g-C₃N₄ (STC) binary mixture onto ZnO nanoparticles, and its performance was systematically evaluated. The optimal 35 %-STCZ nanocomposite demonstrated a remarkable hydrogen evolution rate of 603.94 μmol·g⁻¹·h⁻¹, representing a twofold increase compared to the STC binary photocatalyst. Furthermore, it achieved a 96 % TC degradation efficiency under the following optimized conditions: catalyst dosage of 0.65 g/L, TC concentration of 28.24 mg/L, reaction time of 71.98 min, and pH 5.11. Comprehensive material characterization, including XRD, XPS, SEM, TEM, BET, and UV–vis DRS analyses, confirmed the successful synthesis and enhanced photocatalytic properties of the 35 %-STCZ composite. Moreover, EIS, PL spectroscopy, and photocurrent measurements indicated efficient charge separation and improved carrier mobility, attributed to the dual Z-scheme heterojunction mechanism. Trapping experiments and ESR analysis revealed that hydroxyl (•OH) and superoxide (•O₂⁻) radicals played pivotal roles in the photocatalytic degradation of TC, with intermediate degradation pathways elucidated via LC-MS analysis. Toxicity assessments demonstrated that the photocatalytic treatment significantly reduced the ecological impact of TC and its byproducts. The 35 %-STCZ composite exhibited excellent stability, maintaining 85 % of its photocatalytic activity over five consecutive cycles for TC degradation. Additionally, the catalyst performed effectively across diverse water sources, underscoring its practical applicability. These findings highlight the potential of the SrTiO₃/g-C₃N₄/ZnO photocatalyst for dual applications in environmental remediation and sustainable hydrogen production, offering a promising pathway toward carbon-neutral energy solutions and water pollution control.

{"title":"Novel environmentally benign dual Z-scheme SrTiO3/g-C3N4/ZnO heterojunction for efficient H2 evolution and polluted water treatment: Optimization, mechanism interpretations and toxicity assessment","authors":"Mutairah S. Alshammari , Waqed H. Hassan , Murtadha M. Al-Zahiwat , Haitham Osman , Heba A. El-Sabban , M.A. Diab , Zukhra Atamuratova , Elyor Saitov , Abdelfattah Amari","doi":"10.1016/j.flatc.2025.100841","DOIUrl":"10.1016/j.flatc.2025.100841","url":null,"abstract":"<div><div>In this study, a novel and robust ternary SrTiO₃/g-C₃N₄/ZnO (STCZ) photocatalyst was synthesized and characterized for its efficiency in photocatalytic hydrogen production and tetracycline (TC) degradation under visible light illumination. The ternary composite was prepared by incorporating an optimized 40 %-SrTiO₃/g-C₃N₄ (STC) binary mixture onto ZnO nanoparticles, and its performance was systematically evaluated. The optimal 35 %-STCZ nanocomposite demonstrated a remarkable hydrogen evolution rate of 603.94 μmol·g<sup>−1</sup>·h<sup>−1</sup>, representing a twofold increase compared to the STC binary photocatalyst. Furthermore, it achieved a 96 % TC degradation efficiency under the following optimized conditions: catalyst dosage of 0.65 g/L, TC concentration of 28.24 mg/L, reaction time of 71.98 min, and pH 5.11. Comprehensive material characterization, including XRD, XPS, SEM, TEM, BET, and UV–vis DRS analyses, confirmed the successful synthesis and enhanced photocatalytic properties of the 35 %-STCZ composite. Moreover, EIS, PL spectroscopy, and photocurrent measurements indicated efficient charge separation and improved carrier mobility, attributed to the dual <em>Z</em>-scheme heterojunction mechanism. Trapping experiments and ESR analysis revealed that hydroxyl (•OH) and superoxide (•O₂<sup>−</sup>) radicals played pivotal roles in the photocatalytic degradation of TC, with intermediate degradation pathways elucidated via LC-MS analysis. Toxicity assessments demonstrated that the photocatalytic treatment significantly reduced the ecological impact of TC and its byproducts. The 35 %-STCZ composite exhibited excellent stability, maintaining 85 % of its photocatalytic activity over five consecutive cycles for TC degradation. Additionally, the catalyst performed effectively across diverse water sources, underscoring its practical applicability. These findings highlight the potential of the SrTiO₃/g-C₃N₄/ZnO photocatalyst for dual applications in environmental remediation and sustainable hydrogen production, offering a promising pathway toward carbon-neutral energy solutions and water pollution control.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"50 ","pages":"Article 100841"},"PeriodicalIF":5.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143561923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assembly of Ti3C2 MXene and SBA-15 templated mesoporous NiFe2O4 as an anode for lithium-ion battery

IF 5.9 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-03-01 DOI: 10.1016/j.flatc.2025.100843

Munawar Khalil , Alexander G. Juandito , Dede Djuhana , Bambang Priyono , Grandprix T.M. Kadja , Muhammad Haris Mahyuddin , Fatwa F. Abdi

This study reports on the fabrication and assembly of Ti₃C₂ MXene and mesoporous NiFe₂O₄ (m-NiFe₂O₄) as anode material for Lithium-ion battery (LIB). Here, Ti₃C₂ MXene was prepared using an etching and exfoliating process. Meanwhile, the mesoporous feature of NiFe₂O₄ was fabricated via nanocasting method using SBA-15 as a hard template. Based on the result, the integration of the two materials via hydrothermal method was found to demonstrate a synergistic effect in facilitating the migration of Li ions, which resulted in a significant increase in the initial discharge capacity of 1383 mA h g⁻¹ and Coulombic efficiency of 95 %. Such enhancement was believed to have originated not only from the high surface area of m-NiFe₂O₄ (168.27 m²/g), which was mainly due to its mesoporous feature, but also the unique physicochemical properties and conductivity of Ti₃C₂ MXene. Besides, theoretical calculation using Density Functional Theory (DFT) also revealed that the adsorption energy of lithium atoms at the composite's surface was found to be more negative than that of individual materials. This suggests that the synergy between the two materials provides a more favorable environment for lithium to be intercalated at the anode, ultimately leading to increased battery performance.

{"title":"Assembly of Ti3C2 MXene and SBA-15 templated mesoporous NiFe2O4 as an anode for lithium-ion battery","authors":"Munawar Khalil , Alexander G. Juandito , Dede Djuhana , Bambang Priyono , Grandprix T.M. Kadja , Muhammad Haris Mahyuddin , Fatwa F. Abdi","doi":"10.1016/j.flatc.2025.100843","DOIUrl":"10.1016/j.flatc.2025.100843","url":null,"abstract":"<div><div>This study reports on the fabrication and assembly of Ti<sub>3</sub>C<sub>2</sub> MXene and mesoporous NiFe<sub>2</sub>O<sub>4</sub> (m-NiFe<sub>2</sub>O<sub>4</sub>) as anode material for Lithium-ion battery (LIB). Here, Ti<sub>3</sub>C<sub>2</sub> MXene was prepared using an etching and exfoliating process. Meanwhile, the mesoporous feature of NiFe<sub>2</sub>O<sub>4</sub> was fabricated via nanocasting method using SBA-15 as a hard template. Based on the result, the integration of the two materials via hydrothermal method was found to demonstrate a synergistic effect in facilitating the migration of Li ions, which resulted in a significant increase in the initial discharge capacity of 1383 mA h g<sup>−1</sup> and Coulombic efficiency of 95 %. Such enhancement was believed to have originated not only from the high surface area of m-NiFe<sub>2</sub>O<sub>4</sub> (168.27 m<sup>2</sup>/g), which was mainly due to its mesoporous feature, but also the unique physicochemical properties and conductivity of Ti<sub>3</sub>C<sub>2</sub> MXene. Besides, theoretical calculation using Density Functional Theory (DFT) also revealed that the adsorption energy of lithium atoms at the composite's surface was found to be more negative than that of individual materials. This suggests that the synergy between the two materials provides a more favorable environment for lithium to be intercalated at the anode, ultimately leading to increased battery performance.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"50 ","pages":"Article 100843"},"PeriodicalIF":5.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

首页上一页

下一页尾页

类型

全部化学•材料生命科学医学物理工程技术环境•农林材料科学地球科学法学管理学化学环境科学与生态学计算机科学教育学经济学农林科学人文科学生物学数学物理与天体物理心理学综合性期刊其他工业工程理学历史学农学文学信息工程

数据库

全部 ACS Publications Elsevier ieeexplore Springer The Royal Society of Chemistry Wiley

期刊

FlatChem

全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.

﹀