The present study aimed to develop and evaluate a simple and green electrochemistry experimental kit named Lectrofun 2.0. Lectrofun 2.0 consist of educational kits and module which was built using green chemicals, recyclable materials and easily accessible materials. It overview the basic concepts of electrochemistry and electrolysis in the guided learning approach. Objectives of this research are to (1) develop Lectrofun 2.0 module using green chemicals, recyclable materials and easily accessible materials, (2) evaluate the effectiveness of the module in terms of students' understanding of the topic of Electrochemistry and (3) investigate students’ perceptions on Lectrofun 2.0 module. Instructional design model used was based on the Design and Development Research, DDR. The development phase involved the objective of the study (1) while the evaluation phase involved the objective of the study (2) - (3). The research instrument applied content validity assessment form to ev.....

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The study aimed at developing and evaluating a simple green electrochemistry experimental kit named Lectrofun 2.0. Lectrofun 2.0 is an educational kit equipped with a module built with the criteria of user-friendly, cost-effective, and laboratory free. The basic concept of electrochemistry was introduced through a guided learning approach via the module. The objectives of this research were to (1) develop Lectrofun 2.0 module using green chemicals, recyclable and easily accessible materials and (2) evaluate the module effectiveness in terms of student achievement/understanding of the Electrochemistry topic. This is a Design and Development Research (DDR) using the ADDIE model as an instructional design model. The development phase involves the first objective of the study, while the evaluation phase involves the second objective. Total of 46 respondents of pre-post tests were involved in evaluating effectiveness of Lectrofun 2.0 in terms of student achievement/understanding of the topi.....

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The issue of mercury (Hg2+) existing in water supplies has been brought up since it has an impact on both people and the environment. The ideal method for removing Hg2+ is adsorption since it is easy to use, highly effective, and economical. Alumina composite and thiols are two probable substances that have been used to remove Hg2+ from wastewater, but it is still unclear how these substances work when it comes to adsorbing the metal. In order to observe the present method of removing Hg2+ from wastewater, this review has been undertaken. This study examined the characteristics, processes, and qualities of two different types of adsorbents: alumina and thiol. There are numerous phases of alumina, and each has distinct properties. The characteristics of alumina at various temperatures, levels of porosity, and surface area, as well as its primary identification as a Hg2+ adsorbent by the bonding of Al-Hg in XPS, XRD, and TEM, are described. Additionally, through imaging and bonding confi.....

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Self-assembled monolayers (SAMs) of thiols, dithiols, or other bonding moieties are attractive   molecular  systems  with  expected  applications  in  novel  areas  such  as molecular electronics,  biotechnology and chemical and bio-sensing. With two thiol or two dicarboxylic acid moieties, with  aromatic and/or aliphatic backbone structures, these molecules have the ability to connect two  metal electrodes, and have been chosen for this fundamental work on molecular wires. Our work was first concerned with a study of the morphology and structure of self-assembled  monolayers of such molecules on Au(l 11), at low and at high molecular coverage. We used scanning  tunneling microscopy (STM) to investigate the self-assembly of two prototypic symmetric dithiols  (1,6-hexanedithiol and biphenyl-4,4'-dimethanethiol) from dilute aqueous solutions and were able to  correlate their growth with the deconstruction of the Au(111) herringbone pattern known to produce  a.....

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