Open Inquiry-Based Laboratory Project on Plant-Mediated Green Synthesis of Metal Nanoparticles and Their Potential Applications

Rattanakit, Parawee

doi:10.1021/acs.jchemed.1c00300

Cited by 8 publications

(8 citation statements)

References 28 publications

(37 reference statements)

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“…The Journal of Chemical Education has also announced an upcoming special issue focused on inquiry-based teaching in the chemistry laboratory (Grushow et al, 2021). This issue of the Journal of Chemical Education reflects the growing number of educators committed to incorporating inquiry-based curricula into their instructional laboratory courses (Walker et al, 2011;Pagano et al, 2018;Christianson and Waters, 2021;Hanson and Stultz, 2021;Rattanakit, 2021;Roller et al, 2021). While degrees of inquiry vary among these curricula, all involve engaging students in the scientific discovery process (Weaver et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Revisiting faculty members’ goals for the undergraduate chemistry laboratory

Rocabado

Raker

2023

Chem. Educ. Res. Pract.

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Over a decade has passed since faculty members’ goals for the undergraduate chemistry instructional laboratory were first investigated on a large, national scale in the United States. This study revisits these goals, using data from a 2022 national survey of chemistry faculty members in the United States (n = 521) to investigate current objectives, including how those goals vary with course, institutional context, and receipt of funding for improving undergraduate chemistry courses. A modified version of the Faculty Goals for Undergraduate Chemistry Laboratory Instrument was used to measure goals, with psychometric evidence providing support for its use across the studied contexts, with the exception of the general chemistry laboratory. Goals were associated with course and receipt of funding but not institution type, both with regard to institutions’ highest chemistry degree awarded and approval from the American Chemical Society to award certified bachelor's chemistry degrees. Results suggest that faculty members may adopt a distinct set of goals not immediately associated with the practice of chemistry in the general chemistry laboratory. Further, goals increasingly focus on providing research experience and cultivating disciplinary knowledge and skills with progression through the chemistry curriculum; this focus increases more abruptly when moving from large-enrollment lower-level courses to small-enrollment upper-level courses. Findings imply a need for increased efforts focused on (1) evaluating goals for the general chemistry laboratory, including whether those goals contribute to overarching curricular objectives, (2) promoting adoption of evidence-based pedagogies in large-enrollment contexts to better align instruction with the practice of chemistry, (3) supporting faculty members in procuring funding to improve courses, and (4) refining professional societies’ evaluation criteria for undergraduate chemistry programs.

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Section: Introductionmentioning

confidence: 99%

Revisiting faculty members’ goals for the undergraduate chemistry laboratory

Rocabado

Raker

2023

Chem. Educ. Res. Pract.

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“…Nanoscience is an integral part of chemistry which describes materials with fundamentally novel features and properties at the nanoscale . The National Nanotechnology Initiative and the American Chemical Society emphasize the significance of developing innovative laboratory experiments − and whole courses − on nanomaterials and nanotechnologies to broaden the teaching of nanoscience. For instance, polymer crystals and blends exhibit unique nanostructures that give rise to specific macroscale properties and have applications in electrical devices, membrane materials, biomedical products, and food packaging. , Polymer blends and polymer crystals are different from homogeneous materials like gels and glass, and their unique nanoscale features can be explored with analytical techniques accessible to undergraduate students. , Atomic force microscopy (AFM) is one of the most prominent analytical techniques used for the nanoscale characterization of polymeric materials.…”

Section: Introductionmentioning

confidence: 99%

Atomic Force Microscopy for Teaching Polymer Crystals and Polymer Blends

Dolmat,

Kozlovskaya,

Kharlampieva

2023

J. Chem. Educ.

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The essential component of expanding an undergraduate curriculum is the inclusion of lab experiments in nanoscience and nanomaterials, which significantly impact health and the environment through their use in food, cosmetics, agriculture, and medicine. We designed a laboratory experiment based on the atomic force microscopy (AFM) analysis of the physical characteristics of polymer blends and crystals, including surface morphology, Young’s modulus, deformation, and stiffness. The laboratory exercise exposes students to the main aspects of the crystallization of polyethylene glycol and the formation of an immiscible polystyrene/polybutadiene blend, followed by optical microscopy and AFM characterization. In addition to providing information about the surface morphology and microstructure of the samples through AFM topography scanning, nanoindentation measurements allow for the mechanical characterization of materials with nanoscale resolution. Mechanical characterization offers students a broader application area where they can use their chemical understanding to regulate the material’s physical characteristics. AFM force curve mapping enables assessment of the components’ distribution in composite materials while analyzing each constituent independently with nanoscale precision. The versatility of AFM considerably increases the number of laboratory experiments that can be developed in undergraduate courses on nanoscience and nanomaterials. The knowledge acquired about polymer blending, crystallization, and their characterization at the nanoscale equips students with practical and transferable skills that they may apply in other chemistry and engineering classes to address real-world issues.

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“…In this context, the green chemistry principle can adapt to a home laboratory setting to reduce risks and hazards, promote efficient and sustainable experimental procedures, and reduce the environmental impact of laboratory activities . One popular green strategy involves replacing toxic chemicals with natural plant extracts. − …”

Section: Introductionmentioning

confidence: 99%

Green Analytical Chemistry Laboratory Boxset: From the Lab-at-Home during COVID-19 to a Science Teacher Training

Rattanakit,

Chooyimpanit,

Maungchang

2023

J. Chem. Educ.

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In addressing the need for safer and more accessible chemistry lab procedures, this work integrates green chemistry and small-scale chemistry concepts to serve as a laboratory model for both qualitative and quantitative analyses of iron(III). An aqueous extract of Indian gooseberry is utilized as a natural reagent to form a complex with iron(III), resulting in a distinctive dark purple complex. This reaction is selective for iron(III), and the intensity of the color is directly proportional to its concentration in the sample. The lab boxset, designed for a range of teaching environments, emphasizes the use of safe chemicals, straightforward procedures, affordable lab equipment alternatives, and options for home use. From 2021 to 2022, this lab boxset was successfully implemented in three different contexts: during the COVID-19 pandemic, in a typical classroom setting, and at a science teacher training workshop, engaging a total of 205 students and 24 science teachers. The implications of this work extend to both pedagogical practices and the broader goal of promoting sustainable chemistry.

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Open Inquiry-Based Laboratory Project on Plant-Mediated Green Synthesis of Metal Nanoparticles and Their Potential Applications

Cited by 8 publications

References 28 publications

Revisiting faculty members’ goals for the undergraduate chemistry laboratory

Revisiting faculty members’ goals for the undergraduate chemistry laboratory

Atomic Force Microscopy for Teaching Polymer Crystals and Polymer Blends

Green Analytical Chemistry Laboratory Boxset: From the Lab-at-Home during COVID-19 to a Science Teacher Training

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