Dispersive adsorption and anticorrosion properties of natural capsaicin on Q235 steel in mixed H2SO4 and NaCl environment: Characterization, experimental and theoretical studies

doi:10.1016/j.scp.2023.101042

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	Dispersive adsorption and anticorrosion properties of natural capsaicin on Q235 steel in mixed H2SO4 and NaCl environment: Characterization, experimental and theoretical studies
	Emori,Wilfred; Louis,Hitler; Okonkwo,Paul C.; Njoku,Demian I.; Edet,Henry O.; Okafor,Peter C.; Cheng,Chun-Ru
	2023
发表期刊	SUSTAINABLE CHEMISTRY AND PHARMACY
ISSN	2352-5541
卷号	32 页码:101042
摘要	Although traditional corrosion inhibitors have demonstrated immense relevance in metal protec-tion for many years now, issues relating to their moderate to high toxicities, non-biodegradability, and cost-effectiveness have persisted. For these reasons, bio-based corrosion in-hibitors are gathering significant research attention and have shown great potentials in the corro-sion suppression of metals while being relatively cheap and eco-friendly. This study focuses on the anticorrosion and adsorption properties of natural capsaicin isolated from Capsicum annuum L. as a bio-based corrosion inhibitor for Q235 steel in a mixed acid and chloride system (0.25 M H2SO4 + 0.5 M NaCl). FTIR and NMR techniques afforded the characterization and identifica-tion of the phytocompound. Electrochemical and gravimetric measurements were employed for anticorrosion evaluations. 3D surface profilometer, SEM, and water contact angle examinations provided adsorption proof for capsaicin on steel surface. XPS provided insights into the corrosion suppression mechanism of capsaicin. Computational techniques allowed the description of the adsorption characteristics, molecular interactions, molecular orientations and binding energies of capsaicin on steel substrate. Having a maximum inhibition performance of 94.8% at 298 K, cap-saicin was classified as a functional mixed-type corrosion inhibitor that is reliant on concentra-tion and surrounding temperature for its effectiveness. While also validating the results from wa-ter contact angle measurements, 3D profiling, and SEM, XPS results disclosed that the interac-tions of capsaicin with steel surface leading to its adsorption and anticorrosion effect involved both physisorption and chemisorption processes, and this was in perfect correlation with the Langmuir monolayer adsorption model.
关键词	Phytochemical Adsorption Capsaicin Q235 steel Electrochemistry Computation GREEN CORROSION-INHIBITOR LOW-DENSITY-LIPOPROTEIN MILD-STEEL CARBON-STEEL XYLOPIA-AETHIOPICA IN-VITRO ACID EXTRACT DERIVATIVES BEHAVIOR
学科领域	Chemistry ; Science & Technology - Other Topics ; Environmental Sciences & Ecology
DOI	10.1016/j.scp.2023.101042
收录类别	SCI
WOS记录号	WOS:001001245400001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75388
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Emori,Wilfred,Louis,Hitler,Okonkwo,Paul C.,et al. Dispersive adsorption and anticorrosion properties of natural capsaicin on Q235 steel in mixed H2SO4 and NaCl environment: Characterization, experimental and theoretical studies[J]. SUSTAINABLE CHEMISTRY AND PHARMACY,2023,32:101042.
APA	Emori,Wilfred.,Louis,Hitler.,Okonkwo,Paul C..,Njoku,Demian I..,Edet,Henry O..,...&Cheng,Chun-Ru.(2023).Dispersive adsorption and anticorrosion properties of natural capsaicin on Q235 steel in mixed H2SO4 and NaCl environment: Characterization, experimental and theoretical studies.SUSTAINABLE CHEMISTRY AND PHARMACY,32,101042.
MLA	Emori,Wilfred,et al."Dispersive adsorption and anticorrosion properties of natural capsaicin on Q235 steel in mixed H2SO4 and NaCl environment: Characterization, experimental and theoretical studies".SUSTAINABLE CHEMISTRY AND PHARMACY 32(2023):101042.

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