Research Journal of Chemistry and Environment最新文献

Three components: one-pot synthesis of tetrazoles using silica-supported melamine tri-sulfonic acid, an efficient and reusable heterogeneous catalyst 三组份：使用二氧化硅支撑的三聚氰胺三磺酸--一种高效且可重复使用的异相催化剂--一步法合成四氮唑

Research Journal of Chemistry and Environment Pub Date : 2024-02-29 DOI: 10.25303/284rjce088096

Hetal Tailor, Pruthviraj Limbachiya, D. Mahajan

引用次数: 0

Advanced Oxidation Processes for the oxyfunctionalisation of 1,2-dichlorobenzene: a review 用于 1,2-二氯苯氧官能化的高级氧化工艺：综述

Research Journal of Chemistry and Environment Pub Date : 2024-01-31 DOI: 10.25303/283rjce0940103

Nomthandazo Mkhize, Viswanadha Srirama Rajasekhar Pullabhotla

引用次数: 0

A comprehensive review on Exploration and Production scenario of Natural Gas Hydrate 天然气水合物勘探和生产情况综述

Research Journal of Chemistry and Environment Pub Date : 2024-01-31 DOI: 10.25303/283rjce1040109

Prasenjit Talukdar, Sazia Akhter, Kishan Kumar Dey, Nabanita Hazarika

引用次数: 0

Efficient biological activity of acridine synthesised by using efficient nano catalyst 利用高效纳米催化剂合成的吖啶具有高效生物活性

Research Journal of Chemistry and Environment Pub Date : 2024-01-31 DOI: 10.25303/283rjce056060

G. Sujatha, Devi A. Mathunika, Josephine J. Lesy, P. Punitha, P. Ramanathan

引用次数: 0

Impact of Sodium Dodecyl Sulfate Anionic Micelles on the Complex Equilibria of Divalent Metal Ions with 5-Sulfosalicylic Acid 十二烷基硫酸钠阴离子胶束对二价金属离子与 5-磺基水杨酸络合平衡的影响

Research Journal of Chemistry and Environment Pub Date : 2024-01-31 DOI: 10.25303/283rjce010018

M. Ramanaiah, M. Balakrishna, S. Gouthamsri, Lakshmi M. Sowbhagya, K. Jayarao

{"title":"Impact of Sodium Dodecyl Sulfate Anionic Micelles on the Complex Equilibria of Divalent Metal Ions with 5-Sulfosalicylic Acid","authors":"M. Ramanaiah, M. Balakrishna, S. Gouthamsri, Lakshmi M. Sowbhagya, K. Jayarao","doi":"10.25303/283rjce010018","DOIUrl":"https://doi.org/10.25303/283rjce010018","url":null,"abstract":"The potentiometric measurement was conducted to determine the formation of metal-ligand complex species between 5-sulfosalicylic acid and divalent calcium, magnesium and zinc metal ions. The experiment involved varying concentrations of sodium dodecyl sulphate (0.0, 0.5, 1.0, 1.5, 2.0 and 2.5 percent w/v). The experimental procedure was conducted at a temperature of 303 Kelvin, utilizing sodium chloride (NaCl) to regulate the ionic strength to a value of 0.16 moles per cubic decimeter. The dynamic species of 5-sulfosalicylic acid are LH2- and LH2-. The selection of the best fit for the complex speciation was based on statistical criteria including skewness, χ2, kurtosis and crystallographic R-factor. The formation of the complexes ML2H, ML2H2 and ML3H3 was seen upon as the complexation of metal ions with 5-sulfosalicylic acid. The relationship between electrostatics and the stability of complex species has been demonstrated. Additionally, the dispersion of chemical species in relation to pH and compositional variety has been observed. This study investigates the potential existence of intricate equilibria.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140473027","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

Assessing Environmental Safety Risks associated with Ptaquiloside: A Rapidly Leaching Glucoside from Bracken Ferns 评估与 Ptaquiloside 相关的环境安全风险：从蕨类植物中快速浸出的葡萄糖苷

Research Journal of Chemistry and Environment Pub Date : 2024-01-31 DOI: 10.25303/283rjce090093

S. Narasimhan, S. Bindu

引用次数: 0

Sol-Gel synthesis, characterization and photocatalytic activity of Cobalt doped ZnO nanoparticles 掺钴氧化锌纳米粒子的溶胶-凝胶合成、表征和光催化活性

Research Journal of Chemistry and Environment Pub Date : 2024-01-31 DOI: 10.25303/283rjce048055

M. Chitra, A. Kistan, V. Kanchana, A. Jayanthi

{"title":"Sol-Gel synthesis, characterization and photocatalytic activity of Cobalt doped ZnO nanoparticles","authors":"M. Chitra, A. Kistan, V. Kanchana, A. Jayanthi","doi":"10.25303/283rjce048055","DOIUrl":"https://doi.org/10.25303/283rjce048055","url":null,"abstract":"In the current study, Cobalt (Co) doped ZnO nanoparticles with different dopant concentrations are prepared using the sol-gel process. All the synthesized samples are characterised using a variety of instrumentation methods including XRD, FT-IR, UV-vis absorption spectroscopy, FE-SEM, EDAX, HRTEM and XPS. The XRD measurements revealed the crystallite sizes of the fabricated samples are reduced by increasing cobalt concentrations. The various functional groups present in the doped materials are identified using FT-IR spectra. According to the UV-vis absorption study, as Co dopant concentration rises, the energy band gap narrows down in comparison to pure ZnO. According to an FESEM image, Co doping in ZnO causes a shift in the morphology of the material, making for structures that resemble flowers almost exactly. The various elemental compositions are evaluated using EDAX. The results of analyses employing high-resonance transmission electron microscopy show that the two co-doped ZnO crystallites combine to produce spherical structures with a mean size of 16 nm. This is consistent with the crystallite size predicted by Scherrer's formula. According to the results of the XPS analysis, the Co ion was integrated into the ZnO lattice in a Co2+ oxidised form. The 0.3M Cobalt doped sample showed improved photocatalytic reaction efficiency of methylene blue. As the Co doping concentrations increased, the photocatalytic reaction's efficiency also increased.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140471322","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

Exploring the Role of Carbon Nanosheets for Detoxification of Cr(VI) from Aqueous Solution 探索碳纳米片对水溶液中六价铬的解毒作用

Research Journal of Chemistry and Environment Pub Date : 2024-01-31 DOI: 10.25303/283rjce070077

Madhur Kant, F. Khatoon, Mousumi Sen

{"title":"Exploring the Role of Carbon Nanosheets for Detoxification of Cr(VI) from Aqueous Solution","authors":"Madhur Kant, F. Khatoon, Mousumi Sen","doi":"10.25303/283rjce070077","DOIUrl":"https://doi.org/10.25303/283rjce070077","url":null,"abstract":"Toxic pollutants in wastewater must be reduced in order to protect the aquatic ecosystem's stability and the public's health. Finding affordable and effective technologies for treating municipal, horticultural, aquacultural and industrial wastewater is urgently needed. Nitrogen-doped carbon nanosheets (N-CNS), which are produced by hydrothermal reaction from glycerol, sulfuric acid and melamine, have strong adsorptive behaviour against hazardous aqueous pollutants such as heavy metals and organic compounds. The overall elemental composition of CNS is altered by nitrogen incorporation, favouring CNS interaction with pollutants. The objective of the current investigation was to investigate the possibility for Chromium(VI) [Cr(VI)] adsorption on the CNS from a liquid solution. The ideal pH for Cr (VI) adsorption was noted to be 2.0. The Cr(VI) adsorption was enhanced when the starting metal concentration is more up to 700 mg L-1. A maximum removal of 256.41 mg g-1was seen when pH was 2.0 at 700 mg L-1 initial Cr(VI) concentration. We employed both the Freundlich and the Langmuir adsorption isotherms to determine the adsorption equilibrium constants. Using fitting curves and correlation coefficients (R2), it has been found that the model of the Langmuir isotherm is a best fit and it indicates homogeneous surface of CNS.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140470547","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

Optimisation of extraction parameters of Aquilaria malaccensis on in vitro antiurolithiatic activities using Response surface methodology (RSM) 利用响应面方法学（RSM）优化水飞蓟提取参数对体外抗尿路结石活性的影响

Research Journal of Chemistry and Environment Pub Date : 2024-01-31 DOI: 10.25303/283rjce0109

Fazira Abdul Rahim Nur, N. Muhammad, N. Abdullah, Talip Balkis A.

{"title":"Optimisation of extraction parameters of Aquilaria malaccensis on in vitro antiurolithiatic activities using Response surface methodology (RSM)","authors":"Fazira Abdul Rahim Nur, N. Muhammad, N. Abdullah, Talip Balkis A.","doi":"10.25303/283rjce0109","DOIUrl":"https://doi.org/10.25303/283rjce0109","url":null,"abstract":"The prevalence of urolithiasis has become a concerning issue in Malaysia. Its treatment normally relies on medical processes which are costly and can trigger reoccurrence. Traditional healers have used Aquilaria malaccensis (agarwood) to treat urolithiasis; however, the extraction parameters that result in optimum effectiveness have not been determined. Hence, this research aims to optimise the extraction parameters of A. malaccensis stem on in vitro antiurolithiatic activities by applying response surface methodology (RSM) and central composite design (CCD). The studied parameters were solvent concentration (X1), extraction temperature (X2) and extraction time (X3). Their effects on antiurolithiatic activities (turbidity assay, Y1; titrimetric assay, Y2) were also investigated. The presence of phenols, alkaloids and terpenoids was assessed both qualitatively and quantitatively. The quadratic model was selected for both antiurolithiatic activities as the R2 values achieved were close to 1 and were significantly affected by each studied parameter (p < 0.05). The optimum extraction condition of A. malaccensis stem extract was 100% ethanol, 30.0°C extraction temperature and 30 min extraction time. The extract demonstrated antiurolithiatic activities measured at 83.58 ± 0.75% (turbidity assay) and 86.57 ± 0.80% (titrimetric assay). The phytoconstituents in A. malaccensis stem extracts showed positive correlations with both antiurolithiatic activities. This research has established the reliability of RSM to optimise extraction conditions of A. malaccensis stem to exhibit high antiurolithiatic activities.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140476845","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

The development, preparation and characterisation of novel pyran derivatives and their biological assessment 新型吡喃衍生物的开发、制备和表征及其生物学评估

Research Journal of Chemistry and Environment Pub Date : 2024-01-31 DOI: 10.25303/283rjce061069

Shamili Sriramoju, Srinivas Avula, Sindhura Konda, Kavitha Siddoju

引用次数: 0