Journal of Surface Science and Technology最新文献_第4页

Dye Adsorption Kinetics and Isotherm Study Using Surfactant-Modified Biomass: Influence of pH Substantiated with Quantum Chemical Validation 表面活性剂改性生物质染料吸附动力学及等温线研究:pH值的影响及量子化学验证

Journal of Surface Science and Technology Pub Date : 2022-05-12 DOI: 10.18311/jsst/2021/28588

Bharatkumar Kanoje, U. Dani, M. Shirdhonkar, J. Parikh, K. Kuperkar

{"title":"Dye Adsorption Kinetics and Isotherm Study Using Surfactant-Modified Biomass: Influence of pH Substantiated with Quantum Chemical Validation","authors":"Bharatkumar Kanoje, U. Dani, M. Shirdhonkar, J. Parikh, K. Kuperkar","doi":"10.18311/jsst/2021/28588","DOIUrl":"https://doi.org/10.18311/jsst/2021/28588","url":null,"abstract":"The current study offers a comprehensive understanding on the adsorption study employing the cost-effective biomass as an effective substitute against high-cost treatment options. The present work put forth the adsorption of hazardous cationic dye: Crystal Violet (CV) from aqueous solution using Rice Husk (RH) and surfactant Modified Rice Husk (MRH). Effect of the adsorbents: RH and MRH onto CV removal is determined considering various experimental parameters viz., mass, volume, dye concentration, contact-time, equilibrium temperature, and pH where maximum CV adsorption was achieved at pH = 8. Results obtained are attributed to the favorable ion-pair formation between CV and anionic surfactant: Sodium Dodecyl Sulfate (SDS) which is validated further using quantum chemical calculations. To counterpart the sorption process onto the adsorbent, the adsorption study was validated employing several kinetic models and isotherms. The thermodynamic conduct concluded the CV adsorption to be spontaneous (negative ?G) and endothermic (positive ?H) in characteristic at ambient temperature i.e., adsorption increases with temperature.","PeriodicalId":17031,"journal":{"name":"Journal of Surface Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45586944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mn (II) Adsorption on Activated Carbon Derived from Amaro (Spondias pinnata) Seed Stone Amaro（Spondias羽状茎）籽石活性炭对Mn（II）的吸附

Journal of Surface Science and Technology Pub Date : 2021-04-09 DOI: 10.18311/JSST/2020/25657

M. Adhikari, A. Thapa

{"title":"Mn (II) Adsorption on Activated Carbon Derived from Amaro (Spondias pinnata) Seed Stone","authors":"M. Adhikari, A. Thapa","doi":"10.18311/JSST/2020/25657","DOIUrl":"https://doi.org/10.18311/JSST/2020/25657","url":null,"abstract":"Amaro (Spondias pinnata) seed stone powder was activated using phosphoric acid and carbonized in a muffle furnace at three different temperatures, viz. 300, 400 and 500oC (PAC-300, PAC-400 and PAC-500) to produced Activated Carbons (ACs). Thus, obtained ACs are characterized using Boehm titration, iodine number and scanning electron microscopy (SEM). The observed results attributed that PACs contained irregular sized and shaped particles with well-developed pores, which mostly consisted of carboxyl and phenolic functional groups. Among the ACs, PAC-400 had a highest values of methylene blue number, iodine number and specific surface area, which were 181mg/g, 371.02 mg/g and 582 m2/g, respectively. For the 150 mg/L of methylene blue concentration the adsorption capacity of all the PACs was 100% and the adsorption isotherm followed Langmuir isotherm with Qmax of 256.41 mg/g. Within 2 hours at pH 5, PAC-400 removed as high as 94% of Mn(II) ion from 25 mg/L and up to 40% from 400 mg/L concentration of manganese from an aqueous solution. The adsorption kinetics described pseudo second order kinetics indicating chemisorption. All the results attributed that the phosphoric acid activated amaro seed stone can be used as efficient adsorbent to absorb manganese from an aqueous solution.","PeriodicalId":17031,"journal":{"name":"Journal of Surface Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48018319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Cadmium Removal by Adsorption: Enhancement by Surfactant Mediation 表面活性剂强化吸附除镉

Journal of Surface Science and Technology Pub Date : 2021-04-09 DOI: 10.18311/JSST/2020/18643

Akshay Chavan, R. Jayaram, S. Bhagwat

引用次数: 0

Impregnation of Activated Carbon in Polyurethane Foam for Enhanced Solvent and Oil Adsorption from Water 聚氨酯泡沫中浸渍活性炭增强对水中溶剂和油的吸附

Journal of Surface Science and Technology Pub Date : 2021-04-09 DOI: 10.18311/JSST/2020/24415

Amit G. Shirke, P. Desai, Monika Vashisht, B. Dholakiya, K. Kuperkar

引用次数: 0

Concentration of Capping Agent Controls Size Selection, Agglomeration and Antimicrobial Action of Silver Nanoparticles 封盖剂的浓度控制银纳米颗粒的粒径选择、团聚和抗菌作用

Journal of Surface Science and Technology Pub Date : 2021-04-09 DOI: 10.18311/JSST/2020/24875

R. Parveen, A. Datta, P. Maiti

引用次数: 2

Capparis decidua: A Green Inhibitor for Pure Aluminum Corrosion in Basic Media 一种纯铝在碱性介质中的绿色缓蚀剂

Journal of Surface Science and Technology Pub Date : 2021-04-09 DOI: 10.18311/JSST/2020/23534

Mahmoud A. Al-Qudah, Rasha S. Hamaideh, I. Al-Momani, N. Al-Bataineh

{"title":"Capparis decidua: A Green Inhibitor for Pure Aluminum Corrosion in Basic Media","authors":"Mahmoud A. Al-Qudah, Rasha S. Hamaideh, I. Al-Momani, N. Al-Bataineh","doi":"10.18311/JSST/2020/23534","DOIUrl":"https://doi.org/10.18311/JSST/2020/23534","url":null,"abstract":"Aluminum corrosion inhibition using Capparis decidua extract has been studied. The study was performed in a 1.0 M solution of sodium hydroxide and was monitored both by measuring mass-loss and by using electro-chemical and polarization methods. In addition, surface morphology analysis was performed by applying the technique of Scanning Electron Microscopy (SEM). Results demonstrate effectiveness of Capparis decidua extract as an inhibitor and the efficiency is both concentration and temperature dependent. Optimum (95.2%) inhibitor efficiency was found with maximum extract concentration at 45ËšC. Results also show a slight decrease of aluminum dissolution upon increasing temperature using Capparis decidua extract. Based on Langmuir adsorption model, Capparis decidua adsorption on aluminum surface shows a high regression coefficient value. Based on the observed results, the activation enthalpy (Î”H#) and activation entropy (Î”S#) have been estimated and discussed. The value, and sign, of the thermodynamic adsorption free energy (Î”Goads) indicate that Capparis decidua extract undergoes physisorption on aluminum surface. A mixed-type inhibition of Capparis decidua extract has been concluded from electrochemical polarization studies. The study clearly shows that Capparis decidua extract acted against aluminum corrosion in alkaline media by forming a protective film on the top of aluminum surface which was determined by SEM results.","PeriodicalId":17031,"journal":{"name":"Journal of Surface Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42611084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Contribution of Seven Electroplating Factors on Some Properties of Zn-Ni Coating on Medium Carbon Steel using Taguchi's L27 Orthogonal Array 田口L27正交阵列法测定中碳钢表面镀锌-镍镀层中7个因素对某些性能的影响

Journal of Surface Science and Technology Pub Date : 2021-04-09 DOI: 10.18311/JSST/2020/26019

Basem Ammar

{"title":"Contribution of Seven Electroplating Factors on Some Properties of Zn-Ni Coating on Medium Carbon Steel using Taguchi's L27 Orthogonal Array","authors":"Basem Ammar","doi":"10.18311/JSST/2020/26019","DOIUrl":"https://doi.org/10.18311/JSST/2020/26019","url":null,"abstract":"The protective Zn-alloy coating enhances the carbon steels' corrosion resistance. Seven factors of Zn-Ni coating electroplating on medium carbon steel were optimized using Taguchi L27 (37) orthogonal array. The impact of nickel chloride concentration (N), distance factor between anode and cathode (X), plating process time (P), bath temperature (T), deposition current density (I), substrate hardness (H), and substrate roughness (R) on the corrosion current density (ICorr) and the coating thickness were examined. Two different samples were also morphologically studied. Results indicated that N:20 g l-1; X:9 cm; P:20 min; T:45 °C; I:3 A dm-2; H:44 HRC; and R:P500 can produce Zn-Ni coating with the highest corrosion resistance (lowest ICorr) with inhibition efficiency of 96.5%. Among factors, T, P, H, and N had the highest impact on ICorr with a total percentage contribution of about 60%. In addition, the thickness was mainly affected by I, P, and H, with a total percentage contribution >90%. The optimal combination for lowest ICorr resulted in a smooth and more homogenous and compact structure of coating without microcracks. Higher microhardness was also obtained due to the high nickel content in Zn-Ni coating (14.7%wt). However, the worst combination gave semi-spherical-shaped crystallites with non-uniform distribution of particles.","PeriodicalId":17031,"journal":{"name":"Journal of Surface Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44430894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Development and Characterisation of W and W-25% Ta Composite Coatings on Steel Material 钢材料W和W-25% Ta复合涂层的研制与性能研究

Journal of Surface Science and Technology Pub Date : 2021-04-09 DOI: 10.18311/JSST/2020/20109

S. Konuru, V. Umasankar, A. Sarma

引用次数: 2

Obituary of Dr. Suhaschandra Ghosh Suhaschandra Ghosh博士的讣告

Journal of Surface Science and Technology Pub Date : 2020-12-19 DOI: 10.18311/jsst/2020/27624

E. Board

引用次数: 0

SiO2 Dielectric Micro-Pattern Layer for Solar Cell Application 用于太阳能电池的SiO2介电微图案层

Journal of Surface Science and Technology Pub Date : 2020-08-20 DOI: 10.18311/jsst/2020/24109

Nguyen Dinh Lam

引用次数: 0