Pub Date : 2023-08-03DOI: 10.1557/s43578-023-01104-8
Shruti Aich, A. Banerjee, M. Pai, B. Dutta, P. A. Hassan, H. Poswal, A. Tripathi
The development of noble metal-free electrocatalyst for HER is crucial for sustainable green electrolytic hydrogen production. Molybdenum carbides have shown enormous potential as an economic electrocatalyst for HER. In this study, we have synthesized three Mo2C/C electrocatalysts by varying the ratios of carbon (citric acid) and molybdenum (ammonium heptamolybdate) precursors as 2:1, 1:1, and 1:2 (samples abbreviated as CAMO21, CAMO11, and CAMO12) using the carburization method. The synthesized samples are characterized by powder XRD, Raman spectroscopy, SAXS, SEM, and TEM which revealed the crystal phase, porosity, and morphological properties of the samples. The polarization curves reveal that their electrochemical activity for HER varied as CAMO12 > CAMO11 > CAMO21. EIS studies indicated that the resistance due to porosity of the samples is maximum for CAMO11, indicating that a bimodal porosity with a substantial fraction of pores near the micropore region is not beneficial for electrochemical HER.
{"title":"Citric acid-derived nanoporous molybdenum carbide electrocatalyst for HER: Effect of porosity on HER performance","authors":"Shruti Aich, A. Banerjee, M. Pai, B. Dutta, P. A. Hassan, H. Poswal, A. Tripathi","doi":"10.1557/s43578-023-01104-8","DOIUrl":"https://doi.org/10.1557/s43578-023-01104-8","url":null,"abstract":"The development of noble metal-free electrocatalyst for HER is crucial for sustainable green electrolytic hydrogen production. Molybdenum carbides have shown enormous potential as an economic electrocatalyst for HER. In this study, we have synthesized three Mo2C/C electrocatalysts by varying the ratios of carbon (citric acid) and molybdenum (ammonium heptamolybdate) precursors as 2:1, 1:1, and 1:2 (samples abbreviated as CAMO21, CAMO11, and CAMO12) using the carburization method. The synthesized samples are characterized by powder XRD, Raman spectroscopy, SAXS, SEM, and TEM which revealed the crystal phase, porosity, and morphological properties of the samples. The polarization curves reveal that their electrochemical activity for HER varied as CAMO12 > CAMO11 > CAMO21. EIS studies indicated that the resistance due to porosity of the samples is maximum for CAMO11, indicating that a bimodal porosity with a substantial fraction of pores near the micropore region is not beneficial for electrochemical HER.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"34 1","pages":"3861 - 3873"},"PeriodicalIF":0.8,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89449693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-03DOI: 10.1557/s43578-023-01119-1
K. Kaur, Hamnesh Mahajan, Anjori Sharma, Ibrahim Mohammaed, A. K. Srivastava, D. Basandrai
The structural, morphological, magnetic, and dielectric properties of MnxCo0.5-xNi0.5Fe2O4 (x = 0.0, 0.2, and 0.4) synthesized by sol–gel auto-combustion are reported in this paper. X-ray diffraction pattern of the samples confirms the formation of a single-phase spinel ferrite and the crystallite size (D) is in the range of 32.60–33.62 nm. Fourier transform infrared spectra have a vibrational band at 534.20 cm−1 and 420.13 cm−1 which corresponds to the tetrahedral and octahedral sites of the MnxCo0.5-xNi0.5Fe2O4 respectively. Field emission scanning electron microscope reveals the cubic morphology of the synthesized spinel ferrite with inhomogeneous grain size. Vibrating sample magnetometer analysis showed the ferromagnetic nature of all samples. All the samples exhibit a multi-domain because the value of Mr/Ms lies in the range of 0.153–0.336. Dielectric properties reveal the hopping of the charge carrier which has improved the conduction mechanism of the MnxCo0.5-xNi0.5Fe2O4.
{"title":"Manganese doped cobalt–nickel spinel ferrite via. sol–gel approach: Insight into structural, morphological, magnetic, and dielectric properties","authors":"K. Kaur, Hamnesh Mahajan, Anjori Sharma, Ibrahim Mohammaed, A. K. Srivastava, D. Basandrai","doi":"10.1557/s43578-023-01119-1","DOIUrl":"https://doi.org/10.1557/s43578-023-01119-1","url":null,"abstract":"The structural, morphological, magnetic, and dielectric properties of MnxCo0.5-xNi0.5Fe2O4 (x = 0.0, 0.2, and 0.4) synthesized by sol–gel auto-combustion are reported in this paper. X-ray diffraction pattern of the samples confirms the formation of a single-phase spinel ferrite and the crystallite size (D) is in the range of 32.60–33.62 nm. Fourier transform infrared spectra have a vibrational band at 534.20 cm−1 and 420.13 cm−1 which corresponds to the tetrahedral and octahedral sites of the MnxCo0.5-xNi0.5Fe2O4 respectively. Field emission scanning electron microscope reveals the cubic morphology of the synthesized spinel ferrite with inhomogeneous grain size. Vibrating sample magnetometer analysis showed the ferromagnetic nature of all samples. All the samples exhibit a multi-domain because the value of Mr/Ms lies in the range of 0.153–0.336. Dielectric properties reveal the hopping of the charge carrier which has improved the conduction mechanism of the MnxCo0.5-xNi0.5Fe2O4.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"84 1","pages":"3837 - 3849"},"PeriodicalIF":0.8,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73920513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-31DOI: 10.1557/s43578-023-01108-4
Benton Onyango Otieno, Charmaine Kgomotso Funani, Selebogo Mervyn Khune, J. Kabuba, P. Osifo
Effective treatment of waste streams such as municipal waste-activated sludge (WAS) presents an opportunity for energy and nutrient recovery, water reclamation, and mitigation of climate change. WAS is a waste product of the activated sludge treatment (AST) process widely used for municipal wastewater. Currently, WAS treatment and disposal account for up to 50% of the total operation cost and 40% of the total greenhouse gas emissions from wastewater treatment plants. Anaerobic digestion (AD) is usually preferred for WAS treatment since it is more economical compared to other existing technologies. The decomposition of sludge during AD releases nutrients, which are then discharged in the anaerobic effluent, polluting recipient water bodies and increasing the nutrient burden. The nutrients, mainly nitrogen (N), phosphorus (P), and potassium (K), can be crystallised into struvite (magnesium ammonium phosphate, NH4MgPO4.6H2O) with numerous agricultural applications as fertilisers. The present review focusses on struvite recovery from anaerobically digested WAS and its potential application for crop production.
{"title":"Struvite recovery from anaerobically digested waste-activated sludge: A short review","authors":"Benton Onyango Otieno, Charmaine Kgomotso Funani, Selebogo Mervyn Khune, J. Kabuba, P. Osifo","doi":"10.1557/s43578-023-01108-4","DOIUrl":"https://doi.org/10.1557/s43578-023-01108-4","url":null,"abstract":"Effective treatment of waste streams such as municipal waste-activated sludge (WAS) presents an opportunity for energy and nutrient recovery, water reclamation, and mitigation of climate change. WAS is a waste product of the activated sludge treatment (AST) process widely used for municipal wastewater. Currently, WAS treatment and disposal account for up to 50% of the total operation cost and 40% of the total greenhouse gas emissions from wastewater treatment plants. Anaerobic digestion (AD) is usually preferred for WAS treatment since it is more economical compared to other existing technologies. The decomposition of sludge during AD releases nutrients, which are then discharged in the anaerobic effluent, polluting recipient water bodies and increasing the nutrient burden. The nutrients, mainly nitrogen (N), phosphorus (P), and potassium (K), can be crystallised into struvite (magnesium ammonium phosphate, NH4MgPO4.6H2O) with numerous agricultural applications as fertilisers. The present review focusses on struvite recovery from anaerobically digested WAS and its potential application for crop production.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"70 1","pages":"3815 - 3826"},"PeriodicalIF":0.8,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89782255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-27DOI: 10.1557/s43578-023-01115-5
Anu Singh, Akanksha Gautam, N. Chauhan, Vanshika Dureja, S. Kaushik, Sugandha Kashyap, Shilpi Verma, Himanki Dabral, Arkaja Goswami, Surinder P. Singh, Hemant R Kushwaha
A simple and cost-effective approach has been used to synthesize biocompatible nanocomposites of graphene oxide, glucose and copper oxide. Basically, three types of nanocomposites (i.e., Glucose-capped copper oxide nanoparticles, GO stabilized copper oxide nanoparticles and GO stabilized glucose-capped copper oxide nanoparticles) are synthesized at 35, 75, and 100°C. All the nanocomposites are characterized for their physical properties and studied for their antibacterial properties. Antibacterial testing against laboratory strains of Escherichia coli and Bacillus anthracis shows that all the nanocomposites synthesized at 35°C possess better antibacterial activities compared to other nanocomposites and GO. In this study, the order of antibacterial activity for synthesized nanocomposites observed is Cu/Glu/GO > Cu/Glu > Cu/GO, suggesting that the Cu/Glu/GO possess comparatively significant antibacterial properties owing to the synergistic effect of copper, glucose and GO. However, it should be further explored to be an alternative antibacterial agent to overcome antimicrobial resistance in near future.
{"title":"A simple and cost-effective synthesis of graphene oxide stabilized glucose-capped copper oxide nanoparticles and its antibacterial properties","authors":"Anu Singh, Akanksha Gautam, N. Chauhan, Vanshika Dureja, S. Kaushik, Sugandha Kashyap, Shilpi Verma, Himanki Dabral, Arkaja Goswami, Surinder P. Singh, Hemant R Kushwaha","doi":"10.1557/s43578-023-01115-5","DOIUrl":"https://doi.org/10.1557/s43578-023-01115-5","url":null,"abstract":"A simple and cost-effective approach has been used to synthesize biocompatible nanocomposites of graphene oxide, glucose and copper oxide. Basically, three types of nanocomposites (i.e., Glucose-capped copper oxide nanoparticles, GO stabilized copper oxide nanoparticles and GO stabilized glucose-capped copper oxide nanoparticles) are synthesized at 35, 75, and 100°C. All the nanocomposites are characterized for their physical properties and studied for their antibacterial properties. Antibacterial testing against laboratory strains of Escherichia coli and Bacillus anthracis shows that all the nanocomposites synthesized at 35°C possess better antibacterial activities compared to other nanocomposites and GO. In this study, the order of antibacterial activity for synthesized nanocomposites observed is Cu/Glu/GO > Cu/Glu > Cu/GO, suggesting that the Cu/Glu/GO possess comparatively significant antibacterial properties owing to the synergistic effect of copper, glucose and GO. However, it should be further explored to be an alternative antibacterial agent to overcome antimicrobial resistance in near future.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"62 1","pages":"3980 - 3994"},"PeriodicalIF":0.8,"publicationDate":"2023-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87251738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-25DOI: 10.1557/s43578-023-01122-6
Arindam Debnath, Lavanya Raman, Wenjie Li, Adam M Krajewski, Marcia Ahn, Shuang Lin, S. Shang, A. Beese, Zibai Liu, Wesley F. Reinhart
The rapid design of advanced materials is a topic of great scientific interest. The conventional “forward” paradigm of materials design involves evaluating multiple candidates to determine the best candidate that matches the target properties. However, recent advances in the field of deep learning have given rise to the possibility of an “inverse” design paradigm for advanced materials, wherein a model provided with the target properties is able to find the best candidate. Being a relatively new concept, there remains a need to systematically evaluate how these two paradigms perform in practical applications. Therefore, the objective of this study is to directly, quantitatively compare the forward and inverse design modeling paradigms. We do so by considering two case studies of refractory high-entropy alloy design with different objectives and constraints and comparing the inverse design method to other forward schemes like localized forward search, high-throughput screening, and multi-objective optimization.
{"title":"Comparing forward and inverse design paradigms: A case study on refractory high-entropy alloys","authors":"Arindam Debnath, Lavanya Raman, Wenjie Li, Adam M Krajewski, Marcia Ahn, Shuang Lin, S. Shang, A. Beese, Zibai Liu, Wesley F. Reinhart","doi":"10.1557/s43578-023-01122-6","DOIUrl":"https://doi.org/10.1557/s43578-023-01122-6","url":null,"abstract":"The rapid design of advanced materials is a topic of great scientific interest. The conventional “forward” paradigm of materials design involves evaluating multiple candidates to determine the best candidate that matches the target properties. However, recent advances in the field of deep learning have given rise to the possibility of an “inverse” design paradigm for advanced materials, wherein a model provided with the target properties is able to find the best candidate. Being a relatively new concept, there remains a need to systematically evaluate how these two paradigms perform in practical applications. Therefore, the objective of this study is to directly, quantitatively compare the forward and inverse design modeling paradigms. We do so by considering two case studies of refractory high-entropy alloy design with different objectives and constraints and comparing the inverse design method to other forward schemes like localized forward search, high-throughput screening, and multi-objective optimization.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"75 1","pages":"4107 - 4117"},"PeriodicalIF":0.8,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90185397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-24DOI: 10.1557/s43578-023-01118-2
R. Miglani, Reema Gupta, Anjali Sharma, M. Tomar, A. Chowdhuri
Open-circuited coplanar waveguide (OC-CPW)-based filters have many applications in microwave and transmission line circuits. CPW-based resonant structure with ferroelectric thin film provides advantages including small size, light weight, tunable frequency, etc. The purpose of the current work is to fabricate the novel design of X-band (8.2–12.4 GHz) microwave resonator on thin film of Barium Strontium Titanate (Ba0.5Sr0.5TiO3 or BST) on bare silicon (Si) substrate with and without silicon dioxide (SiO2) as buffer layer. The pattern of microwave resonator has been successfully designed using conventional UV-photolithography technique on Pulsed Laser Deposition (PLD)-grown thin films of BST. The resonating frequencies with minimum return loss of devices fabricated on BST/Si and BST/SiO2/Si substrate recorded as 7.8 GHz and 10.02 GHz, respectively. The resonating frequency of microwave resonator on BST/SiO2/Si substrate lies in X-band region. OC-CPW microwave resonator on (a) BST/Si and (b) BST/SiO2/Si OC-CPW microwave resonator on (a) BST/Si and (b) BST/SiO2/Si
{"title":"Ba1−xSrxTiO3 thin-film-based X-band selective coplanar waveguide microwave resonator using SiO2 as buffer layer","authors":"R. Miglani, Reema Gupta, Anjali Sharma, M. Tomar, A. Chowdhuri","doi":"10.1557/s43578-023-01118-2","DOIUrl":"https://doi.org/10.1557/s43578-023-01118-2","url":null,"abstract":"Open-circuited coplanar waveguide (OC-CPW)-based filters have many applications in microwave and transmission line circuits. CPW-based resonant structure with ferroelectric thin film provides advantages including small size, light weight, tunable frequency, etc. The purpose of the current work is to fabricate the novel design of X-band (8.2–12.4 GHz) microwave resonator on thin film of Barium Strontium Titanate (Ba0.5Sr0.5TiO3 or BST) on bare silicon (Si) substrate with and without silicon dioxide (SiO2) as buffer layer. The pattern of microwave resonator has been successfully designed using conventional UV-photolithography technique on Pulsed Laser Deposition (PLD)-grown thin films of BST. The resonating frequencies with minimum return loss of devices fabricated on BST/Si and BST/SiO2/Si substrate recorded as 7.8 GHz and 10.02 GHz, respectively. The resonating frequency of microwave resonator on BST/SiO2/Si substrate lies in X-band region. OC-CPW microwave resonator on (a) BST/Si and (b) BST/SiO2/Si OC-CPW microwave resonator on (a) BST/Si and (b) BST/SiO2/Si","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"8 1","pages":"4009 - 4021"},"PeriodicalIF":0.8,"publicationDate":"2023-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87154810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"International conference on energy and advanced materials","authors":"","doi":"10.1515/ijmr-2023-3008","DOIUrl":"https://doi.org/10.1515/ijmr-2023-3008","url":null,"abstract":"","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"44 5 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73508689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-24DOI: 10.1557/s43578-023-01109-3
N. Aslan, B. Aksakal, S. Cihangir, Fadime Cetin, Y. Yilmazer
Commercially pure titanium (CP-Ti) is extensively used in biomedical applications. However, numerous qualities, including mechanical strength, corrosion resistance, and wear resistance, must be established for long-term performance as an implant material. This study investigates the enhancement of surface properties of CP-Ti through physical vapor deposition (PVD) with ZrN and ta-C (tetrahedral amorphous carbon). Among the coatings, ZrN revealed best overall results, such as adhesion, corrosion, microhardness, and wettability, excluding cell viability when compared to ta-C. E. coli and S. aureus were employed for antibacterial activity and MTS cell viability experiments. Compared to α-titanium, hardness tests revealed 91% increase in ZrN coating, and %22 increase in ta-C coating. Super-hydrophobicity and excellent antibacterial activity were found for ZrN coatings in comparison to ta-C. These findings emphasize the potential of ZrN and ta-C coatings to improve the surface properties of titanium, encouraging it to be used in biomedical devices.
{"title":"ZrN and ta-C coatings on titanium for biomedical applications: Improved adhesion, corrosion, antibacterial activity, and cytotoxicity properties","authors":"N. Aslan, B. Aksakal, S. Cihangir, Fadime Cetin, Y. Yilmazer","doi":"10.1557/s43578-023-01109-3","DOIUrl":"https://doi.org/10.1557/s43578-023-01109-3","url":null,"abstract":"Commercially pure titanium (CP-Ti) is extensively used in biomedical applications. However, numerous qualities, including mechanical strength, corrosion resistance, and wear resistance, must be established for long-term performance as an implant material. This study investigates the enhancement of surface properties of CP-Ti through physical vapor deposition (PVD) with ZrN and ta-C (tetrahedral amorphous carbon). Among the coatings, ZrN revealed best overall results, such as adhesion, corrosion, microhardness, and wettability, excluding cell viability when compared to ta-C. E. coli and S. aureus were employed for antibacterial activity and MTS cell viability experiments. Compared to α-titanium, hardness tests revealed 91% increase in ZrN coating, and %22 increase in ta-C coating. Super-hydrophobicity and excellent antibacterial activity were found for ZrN coatings in comparison to ta-C. These findings emphasize the potential of ZrN and ta-C coatings to improve the surface properties of titanium, encouraging it to be used in biomedical devices.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"7 1","pages":"3923 - 3936"},"PeriodicalIF":0.8,"publicationDate":"2023-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79173108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-24DOI: 10.1557/s43578-023-01110-w
Vinitha Rani, J. Venkatesan, A. Prabhu
Glioblastoma multiforme is a deadly form of brain tumor with limited treatment options and the existing treatment modalities possess their own pros and cons. Hence, our study aimed to incorporate d-limonene into the liposomal carrier and direct it toward U87MG cells to evaluate its cytotoxic and antiangiogenic activity. One of the prominent characteristics of cancer cells, is their acidic pH and hence, we aimed to synthesize pH-sensitive liposomal carriers, which could efficiently target U87MG cells at acidic pH. The results obtained from our study state that the drug-loaded liposomes were monodispersed, could easily penetrate the cells and render their mode of action. The drug-loaded liposomes effectively induced early apoptosis and showed potent antiangiogenic effects, suggesting its biological efficacy. Our study is the first report suggesting the cytotoxic and antiangiogenic potential of d-limonene-loaded liposomes against U87MG cells.
{"title":"In vitro evaluation of pH-sensitive liposomes loaded with d-limonene in targeting human malignant glioma cells","authors":"Vinitha Rani, J. Venkatesan, A. Prabhu","doi":"10.1557/s43578-023-01110-w","DOIUrl":"https://doi.org/10.1557/s43578-023-01110-w","url":null,"abstract":"Glioblastoma multiforme is a deadly form of brain tumor with limited treatment options and the existing treatment modalities possess their own pros and cons. Hence, our study aimed to incorporate d-limonene into the liposomal carrier and direct it toward U87MG cells to evaluate its cytotoxic and antiangiogenic activity. One of the prominent characteristics of cancer cells, is their acidic pH and hence, we aimed to synthesize pH-sensitive liposomal carriers, which could efficiently target U87MG cells at acidic pH. The results obtained from our study state that the drug-loaded liposomes were monodispersed, could easily penetrate the cells and render their mode of action. The drug-loaded liposomes effectively induced early apoptosis and showed potent antiangiogenic effects, suggesting its biological efficacy. Our study is the first report suggesting the cytotoxic and antiangiogenic potential of d-limonene-loaded liposomes against U87MG cells.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"17 1","pages":"3937 - 3949"},"PeriodicalIF":0.8,"publicationDate":"2023-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80571583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-21DOI: 10.1557/s43578-023-01112-8
Hamzullah Khan, Muhammad Siyar, C. Park, Farhan Javaid, M. Umer, Woo-Min Jin, M. Saleem, A. Adnan
We report the potential of an SnSe2–rGO composite as a thermoelectric (TE) material and the effect of reduced graphene oxide (rGO) concentration on its TE properties. SnSe2–rGO composites were synthesized via a solvothermal route followed by sintering at 823 K in the presence of argon. The in-situ doping of rGO within the SnSe2 matrix was successfully achieved. The resultant composite showed a significant improvement in electrical conductivity, which displayed a peak value of 2479 S/m (pure SnSe2 = 750 S/m) at 300 K. This enhancement is due to the presence of rGO conductive sheets, which increased the carrier concentration of the overall structure. The investigation confirms that increasing the rGO concentration can improve the thermoelectric properties of bulk SnSe2, where the peak ZT of 0.18 at 750 K was achieved when 11.7% of rGO was added to the SnSe2 matrix.
{"title":"Tuning the electronic properties in facile in-situ solution synthesis of SnSe2/rGO nanocomposites with enhanced thermoelectric performance","authors":"Hamzullah Khan, Muhammad Siyar, C. Park, Farhan Javaid, M. Umer, Woo-Min Jin, M. Saleem, A. Adnan","doi":"10.1557/s43578-023-01112-8","DOIUrl":"https://doi.org/10.1557/s43578-023-01112-8","url":null,"abstract":"We report the potential of an SnSe2–rGO composite as a thermoelectric (TE) material and the effect of reduced graphene oxide (rGO) concentration on its TE properties. SnSe2–rGO composites were synthesized via a solvothermal route followed by sintering at 823 K in the presence of argon. The in-situ doping of rGO within the SnSe2 matrix was successfully achieved. The resultant composite showed a significant improvement in electrical conductivity, which displayed a peak value of 2479 S/m (pure SnSe2 = 750 S/m) at 300 K. This enhancement is due to the presence of rGO conductive sheets, which increased the carrier concentration of the overall structure. The investigation confirms that increasing the rGO concentration can improve the thermoelectric properties of bulk SnSe2, where the peak ZT of 0.18 at 750 K was achieved when 11.7% of rGO was added to the SnSe2 matrix.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"6 1","pages":"3913 - 3922"},"PeriodicalIF":0.8,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75315280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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