This study investigates the corrosion inhibition potential of Datura stramonium seed extracts on mild steel in 1.0 mol·L^(-1)HCl and 0.5 mol·L^(-1)H_(2)SO_(4),utilizing both ethanolic and aqueous extracts as...This study investigates the corrosion inhibition potential of Datura stramonium seed extracts on mild steel in 1.0 mol·L^(-1)HCl and 0.5 mol·L^(-1)H_(2)SO_(4),utilizing both ethanolic and aqueous extracts as ecofriendly inhibitors.Electrochemical techniques,thermodynamic studies,and quantum chemical calculations were employed to evaluate the adsorption mechanism and inhibitory action at the metal/electrolyte interface.Maximum inhibition efficie ncies of 93.1%in HCl and 97.7%in H_(2)SO_(4) were achieved with the ethanolic extract at a concentration of 0.2 g·L^(-1),while the aqueous extract demonstrated 93.8%inhibition in HCl and 96.6%in H_(2)SO_(4).Polarization curves indicated mixed-type inhibition with a slight anodic bias.The thermodynamic analysis of two extracts in both environments indicated that the K_(ads)increased and that theΔG_(ads)were close to-40 kJ·mol^(-1),suggesting that the adsorption followed the Langmuir isotherm,indicating a combination of physical and chemical adsorption.SEM/EDX analysis confirmed the formation of a protective layer,while quantum chemical studies further validated strong adsorption,evidenced by a lowΔE of 2.396 eV and an adsorption energy of-878 kcal·mol^(-1)(1kcal·mol^(-1)=4.18 kJ·mol^(-1)).These results demonstrate that Datura stramonium extracts are promising inhibitors,particularly in sulfuric acid,for industrial applications.Reason:Improved clarity,vocabulary,and technical accuracy while maintaining the original meaning.展开更多
The global scientific community is deeply concerned about the deterioration of water quality resulting from the release of industrial effluents.This issue is of utmost importance as it serves to safeguard the environm...The global scientific community is deeply concerned about the deterioration of water quality resulting from the release of industrial effluents.This issue is of utmost importance as it serves to safeguard the environment and combat water pollution.The objective of this work is to elaborate a biomaterial of vegetable origin,based on the twigs of Aleppo pine,and to use it as an abundant and less expensive material for the treatment of wastewater.For this reason,the twigs were treated physically to get the powder called biomaterial FPA(Aleppo pine fiber),which was characterized by physicochemical,and spectroscopic analyses namely scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FTIR)and X-ray diffraction(XRD).The crystallinity index of FPA was evaluated by the peak height method.The findings indicate that the FPA powder has an acidic nature,exhibiting a porous structure that promotes the adsorption and binding of molecules.Additionally,it has a zero charge point of 5.8 and a specific surface area of 384 m2.g−1.It is primarily composed of hydroxyl,carboxyl,and amine functional groups,along with mineral compounds and organic compounds,including cellulose and other mineral elements such as Ca,Mg,Fe,Na,P,Al,K,Ni,and Mo.Combining these characteristics,FPA biomaterial has considerable potential for use as an effective adsorbent biomaterial for various wastewater pollutants.Its abundance and relatively low cost make it an attractive solution to the growing challenges of water pollution worldwide.展开更多
基金supported by the NRF(National Research Foundation)of Koreafunded by the Basic Science Research Program through the Ministry of Education(2020R1I1A3052258)carried out with the support of the“2024 System Semiconductor Technology Development Support Project”of Chungbuk Technopark。
文摘This study investigates the corrosion inhibition potential of Datura stramonium seed extracts on mild steel in 1.0 mol·L^(-1)HCl and 0.5 mol·L^(-1)H_(2)SO_(4),utilizing both ethanolic and aqueous extracts as ecofriendly inhibitors.Electrochemical techniques,thermodynamic studies,and quantum chemical calculations were employed to evaluate the adsorption mechanism and inhibitory action at the metal/electrolyte interface.Maximum inhibition efficie ncies of 93.1%in HCl and 97.7%in H_(2)SO_(4) were achieved with the ethanolic extract at a concentration of 0.2 g·L^(-1),while the aqueous extract demonstrated 93.8%inhibition in HCl and 96.6%in H_(2)SO_(4).Polarization curves indicated mixed-type inhibition with a slight anodic bias.The thermodynamic analysis of two extracts in both environments indicated that the K_(ads)increased and that theΔG_(ads)were close to-40 kJ·mol^(-1),suggesting that the adsorption followed the Langmuir isotherm,indicating a combination of physical and chemical adsorption.SEM/EDX analysis confirmed the formation of a protective layer,while quantum chemical studies further validated strong adsorption,evidenced by a lowΔE of 2.396 eV and an adsorption energy of-878 kcal·mol^(-1)(1kcal·mol^(-1)=4.18 kJ·mol^(-1)).These results demonstrate that Datura stramonium extracts are promising inhibitors,particularly in sulfuric acid,for industrial applications.Reason:Improved clarity,vocabulary,and technical accuracy while maintaining the original meaning.
基金financially supported by the Researchers Supporting Project number(RSP-2024R437),King Saud University,Riyadh,Saudi Arabia.
文摘The global scientific community is deeply concerned about the deterioration of water quality resulting from the release of industrial effluents.This issue is of utmost importance as it serves to safeguard the environment and combat water pollution.The objective of this work is to elaborate a biomaterial of vegetable origin,based on the twigs of Aleppo pine,and to use it as an abundant and less expensive material for the treatment of wastewater.For this reason,the twigs were treated physically to get the powder called biomaterial FPA(Aleppo pine fiber),which was characterized by physicochemical,and spectroscopic analyses namely scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FTIR)and X-ray diffraction(XRD).The crystallinity index of FPA was evaluated by the peak height method.The findings indicate that the FPA powder has an acidic nature,exhibiting a porous structure that promotes the adsorption and binding of molecules.Additionally,it has a zero charge point of 5.8 and a specific surface area of 384 m2.g−1.It is primarily composed of hydroxyl,carboxyl,and amine functional groups,along with mineral compounds and organic compounds,including cellulose and other mineral elements such as Ca,Mg,Fe,Na,P,Al,K,Ni,and Mo.Combining these characteristics,FPA biomaterial has considerable potential for use as an effective adsorbent biomaterial for various wastewater pollutants.Its abundance and relatively low cost make it an attractive solution to the growing challenges of water pollution worldwide.
