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Article
Publication date: 23 June 2023

Wilfred Emori, Paul C. Okonkwo, Hitler Louis, Ling Liu, Ernest C. Agwamba, Tomsmith Unimuke, Peter Okafor, Atowon D. Atowon, Anthony Ikechukwu Obike and ChunRu Cheng

Owing to the toxicity, biodegradability, and cost of most corrosion inhibitors, research attention is now focused on the development of environmentally benign, biodegradable…

49

Abstract

Purpose

Owing to the toxicity, biodegradability, and cost of most corrosion inhibitors, research attention is now focused on the development of environmentally benign, biodegradable, cheap, and efficient options. In consideration of these facts, chrysin, a phytocompound of Populus tomentosa (Chinese white poplar) has been isolated and investigated for its anticorrosion abilities on carbon steel in a mixed acid and chloride system. This highlights the main purpose of the study.

Design/methodology/approach

Chrysin was isolated from Populus tomentosa using column chromatography and characterized using Fourier Transform Infrared Spectroscopy and Nuclear Magnetic Resonance Spectroscopy. The investigations are outlined based on theory (Fukui indices, condensed density functional theory and molecular dynamic simulation) and experiments (electrochemical, gravimetry and surface morphology examinations).

Findings

Theoretical evaluations permitted the description of the adsorption characteristics, and molecular interactions and orientations of chrysin on Fe substrate. The interaction energy for protonated and neutral chrysin on Fe (110) were −149.10 kcal/mol and −143.28 kcal/mol, respectively. Moreover, experimental investigations showed that chrysin is a potent mixed-type corrosion inhibitor for steel, whose effectiveness depends on its surrounding temperature and concentration. The optimum inhibition efficiency of 78.7% after 24 h for 1 g/L chrysin at 298 K indicates that the performance of chrysin, as a pure compound, compares favorably with other phytocompounds and plant extracts investigated under similar conditions. However, the inhibition efficiency decreased to 62.5% and 51.8% at 318 K after 48 h and 72 h, respectively.

Originality/value

The novelty of this study relies on the usage of a pure compound in corrosion suppression investigation, thus eliminating the unknown influences obtainable by the presence of multi-phytocompounds in plant extracts, thereby advancing the commercialization of bio-based corrosion inhibitors.

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Article
Publication date: 11 December 2024

Pielah Kim and Hua Chang

The purpose of this paper is to empirically test the artist contagion effect. This effect suggests that the physical contact of the artist in creating the art leads to a transfer…

84

Abstract

Purpose

The purpose of this paper is to empirically test the artist contagion effect. This effect suggests that the physical contact of the artist in creating the art leads to a transfer of the artist’s essence onto the artwork featured on a product, thereby enhancing consumers’ willingness to pay for such products featuring this art.

Design/methodology/approach

This research conducted four online experimental studies to examine the artist contagion effect.

Findings

This research first uncovered the transfer of the artist’s essence onto the art featured on a product, providing the foundation for the proposed artist contagion (prestudy). Following this, this research validated the artist contagion effect (Study 1) and then ruled out potential alternative explanations for the effect (Study 2). Lastly, this research demonstrated that the immorality of the artist can limit the artist contagion effect (Study 3).

Research limitations/implications

The perception of luxury has been regarded as a mediator explaining why a product featuring art can command a high product valuation. By conceptualizing and verifying the artist contagion effect, this research introduces another mediator, the artist’s essence, accountable for even a greater product valuation.

Practical implications

Visual artists should be included in the marketing of products featuring art. Marketers should communicate the physical contact that occurred during the creation of the art featured on a product.

Originality/value

This research highlights the crucial role of visual artists in the marketing of products featuring art, a role often overlooked in the extensively researched art infusion effect.

Details

European Journal of Marketing, vol. 59 no. 1
Type: Research Article
ISSN: 0309-0566

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Article
Publication date: 29 August 2023

Chigoziri N. Njoku, Temple Uzoma Maduoma, Wilfred Emori, Rita Emmanuel Odey, Beshel M. Unimke, Emmanuel Yakubu, Cyril C. Anorondu, Daniel I. Udunwa, Onyinyechi C. Njoku and Kechinyere B. Oyoh

Corrosion is a major concern for many industries that use metals as structural or functional materials, and the use of corrosion inhibitors is a widely accepted strategy to…

124

Abstract

Purpose

Corrosion is a major concern for many industries that use metals as structural or functional materials, and the use of corrosion inhibitors is a widely accepted strategy to protect metals from deterioration in corrosive environments. Moreover, the toxic nature, non-biodegradability and price of most conventional corrosion inhibitors have encouraged the application of greener and more sustainable options, with natural and synthetic drugs being major actors. Hence, this paper aims to stress the capability of natural and synthetic drugs as manageable and sustainable, environmentally friendly solutions to the problem of metal corrosion.

Design/methodology/approach

In this review, the recent developments in the use of natural and synthetic drugs as corrosion inhibitors are explored in detail to highlight the key advancements and drawbacks towards the advantageous utilization of drugs as corrosion inhibitors.

Findings

Corrosion is a critical issue in numerous modern applications, and conventional strategies of corrosion inhibition include the use of toxic and environmentally harmful chemicals. As greener alternatives, natural compounds like plant extracts, essential oils and biopolymers, as well as synthetic drugs, are highlighted in this review. In addition, the advantages and disadvantages of these compounds, as well as their effectiveness in preventing corrosion, are discussed in the review.

Originality/value

This survey stresses on the most recent abilities of natural and synthetic drugs as viable and sustainable, environmentally friendly solutions to the problem of metal corrosion, thus expanding the general knowledge of green corrosion inhibitors.

Details

Pigment & Resin Technology, vol. 53 no. 6
Type: Research Article
ISSN: 0369-9420

Keywords

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