Characterization of dross and its recovery by sulphuric acid leaching

Rahmani, Siti Astari; Meidianto, A; Amal, Muhamad Ikhlasul; Widayatno, Wahyu Bambang

doi:10.1088/1742-6596/985/1/012033

Cited by 3 publications

(3 citation statements)

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“…Fourier transform infrared (FTIR) spectroscopy spectra were conducted to further demonstrate the hydrogels’ physical and chemical cross-linking reaction (Figure e). The band observed at 1108 cm –1 of both PVA and F/PVA-1–1 with ZnSO 4 was attributed to SO 4 , − indicating the aqueous 2 M ZnSO 4 electrolyte absorption of both PVA and F/PVA-1–1. It is noted that a peak at approximately 1100 cm –1 was observed in the spectra of PVA and F/PVA-1–1, which is attributed to the C–O bonds in PVA and pea protein. , Moreover, The F/PVA-1–1 exhibits two peaks at 1538 and 1440 cm –1 , corresponding to the asymmetric and symmetric stretching vibrations of the −COO– bond, respectively .…”

Section: Resultsmentioning

confidence: 96%

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Biodegradable Pea Protein Fibril Hydrogel-Based Quasi-Solid-State Zn-Ion Battery

Zhao,

Zhang,

et al. 2023

ACS Appl. Mater. Interfaces

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Zinc-ion batteries show great potential as the next-generation power source due to their nontoxic, low-cost, and safe properties. However, issues with zinc anodes, such as dendrite growth and parasitic hydrogen evolution reactions (HERs), must be addressed to commercialize them. Solutions, such as quasi-solid-state electrolytes made from synthetic polymer hydrogels, have been proposed to improve battery flexibility and energy density. However, most polymers used are nonbiodegradable, posing a challenge to sustainability. In this study, hydrogels made from biodegradable poly(vinyl alcohol) and protein nanofibrils from pea protein, a renewable plant-based source, are used as an electrolyte in aqueous zinc-ion batteries. Results show that the flexible and biodegradable hydrogel can enhance the zinc anode stability and effectively restrict HER. This phenomenon is because of the hydrogen-bond network between nanofibril functional groups and water molecules. In addition, the interaction between functional groups on nanofibrils and Zn2+ constructs ion channels for the even migration of Zn2+, avoiding dendrite growth. The Zn||Zn symmetric cell using the hydrogel electrolyte exhibits a long lifespan of over 3000 h and improved capacity retention in the Zn||AC-I2 hybrid ion batteries by suppressing cathode material dissolution. This study suggests the potential of biodegradable hydrogels as a sustainable and effective solution for biodegradable soft powering sources.

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Section: Resultsmentioning

confidence: 96%

“…52,53 This process helps inhibit side reactions and can also form ion channels to guide a Zn 2+ uniform deposition. 54,55 Additionally, pea protein is rich in glutamic acid, which can exist in the ionized form of glutamate. Glutamate has a relatively high affinity for Zn 2+ ions.…”

Section: Resultsmentioning

confidence: 99%

Biodegradable Pea Protein Fibril Hydrogel-Based Quasi-Solid-State Zn-Ion Battery

Zhao,

Zhang,

et al. 2023

ACS Appl. Mater. Interfaces

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“…The strong peak at 1085 cm −1 indicates the presence of SO 4 2− , which comes from ZnSO 4 , and the broad peak at 3200-3100 cm −1 indicates O-H, which originates from the H 2 O molecules. 28 The red shi of the broad peak in the 6-AA added electrolyte spectrum indicates the hydrogen attraction ability and the N-H bond in 6-AA. [29][30][31] Moreover, the 6-AA added electrolyte shows additional peaks at 2945, 2870, 1545, 1398, and 1315 cm −1 , which are related to C-H stretching, C-O vibration and C-N stretching.…”

Section: Resultsmentioning

confidence: 99%