High performance supercapacitors based on wood-derived thick carbon electrodes synthesized <i>via</i> green activation process

Yan, Bing; Li, Feng; Zheng, Jiaojiao; Zhang, Qian; Jiang, Shaohua; Zhang, Chunmei; Ding, Yichun; Han, Jingquan; Chen, Wei; He, Shuijian

doi:10.1039/d2qi01914k

Cited by 83 publications

(20 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Agro-industrial and other solid waste disposal have now become a critical concern, along with the food wastage and loss discussed earlier [ 22 ]. The waste derived from natural sources mainly contains carbon atoms that can potentially be used as a source of carbon material such as wood for thick carbon electrodes [ 23 ], soybean protein isolates as a source of porous carbon sheet [ 24 ], and matamba fruit shell waste as a source of biochar [ 25 ]. Furthermore, the incorporation of amorphous carbon powder in food packaging exhibits bactericidal properties due to its high oxidoreductive potential, resulting in cell membrane damage during lipid peroxidation and intensification of oxidative stress in microbes, which can potentially be used in active packaging application [ 26 ].…”

Section: Industrial Agro-wastementioning

confidence: 99%

Renovation of Agro-Waste for Sustainable Food Packaging: A Review

et al. 2023

View full text Add to dashboard Cite

Waste management in the agricultural sector has become a major concern. Increased food production to satisfy the surge in population has resulted in the generation of large volumes of solid waste. Agro-waste is a rich source of biocompounds with high potential as a raw material for food packaging. Utilization of agro-waste supports the goal of sustainable development in a circular economy. This paper reviews recent trends and the development of agro-wastes from plant and animal sources into eco-friendly food packaging systems. Different plant and animal sources and their potential development into packaging are discussed, including crop residues, process residues, vegetable and fruit wastes, and animal-derived wastes. A comprehensive analysis of the properties and production methods of these packages is presented. Future aspects of agro-waste packaging systems and the inherent production problems are addressed.

show abstract

Section: Industrial Agro-wastementioning

confidence: 99%

Renovation of Agro-Waste for Sustainable Food Packaging: A Review

et al. 2023

View full text Add to dashboard Cite

show abstract

“…In addition, it is possible to synthesize activated carbon by using various activating agents, and it is widely used in a variety of fields, including wastewater treatment [55][56][57].…”

Section: Introductionmentioning

confidence: 99%

Pb(II) Removal from Aqueous Solutions by Adsorption on Stabilized Zero-Valent Iron Nanoparticles—A Green Approach

Sepehri

Kanani

Abdoli

et al. 2023

Water

View full text Add to dashboard Cite

Nano zero-valent iron particles (nZVFe) are known as one of the most effective materials for the treatment of contaminated water. However, a strong tendency to agglomerate has been reported as one of their major drawbacks. The present study describes a green approach to synthesizing stabilized nZVFe, using biomass as a porous support material. Therefore, in the first step, biomass-derived activated carbon was prepared by thermochemical procedure from rice straw (RSAC), and then the RSAC-supported nZVFe composite (nZVFe–RSAC) was employed to extract Pb(II) from aqueous solution and was successfully synthesized by the sodium borohydride reduction method. It was confirmed through scanning electron microscopy (SEM) and X-ray diffraction (XRD) characteristics that the nZVFe particles are uniformly dispersed. Results of the batch experiments showed that 6 (g L−1) of this nanocomposite could effectively remove about 97% of Pb(II) ions at pH = 6 from aqueous solution. The maximum adsorption capacities of the RS, RSAC, and nZVFe–RSAC were 23.3, 67.8, and 140.8 (mg g−1), respectively. Based on the results of the adsorption isotherm studies, the adsorption of Pb(II) on nZVFe–RSAC is consistent with the Langmuir–Freundlich isotherm model R2=0.996). The thermodynamic outcomes exhibited the endothermic, possible, and spontaneous nature of adsorption. Adsorption enthalpy and entropy values were determined as 32.2 kJ mol−1 and 216.9 J mol−1 K−1, respectively. Adsorption kinetics data showed that Pb(II) adsorption onto nZVFe–RSAC was fitted well according to a pseudo-second-order model. Most importantly, the investigation of the adsorption mechanism showed that nZVFe particles are involved in the removal of Pb(II) ions through two main processes, namely Pb adsorption on the surface of nZVFe particles and direct role in the redox reaction. Subsequently, all intermediates produced through the redox reaction between nZVFe and Pb(II) were adsorbed on the nZVFe–RSAC surface. According to the results of the NZVFe–RSAC recyclability experiments, even after five cycles of recovery, this nanocomposite can retain more than 60% of its initial removal efficiency. So, the nZVFe–RSAC nanocomposite could be a promising material for permeable reactive barriers given its potential for removing Pb(II) ions. Due to low-cost and wide availability of iron salts as well as rice biowaste, combined with the high adsorption capacity, make nZVFe–RSAC an appropriate choice for use in the field of Pb(II) removal from contaminated water.

show abstract

“…Figure 2 illustrates the N 2 adsorption–desorption isotherms from type IV, the pore size distribution evidence from the meso-porous nature of the active carbon. Surface area, average pore radius, and total pore volume of the chosen produced activated carbons are displayed in Table 3 [ 19 ].…”

Section: Resultsmentioning

confidence: 99%

Chemically Activated Carbon Based on Biomass for Adsorption of Fe(III) and Mn(II) Ions from Aqueous Solution

et al. 2023

View full text Add to dashboard Cite

Rice husk was converted into activated carbon (AC) as a byproduct of agricultural waste in an electric furnace at 700 °C and chemically activated using three distinct processes: NaOH AC(C), acetic acid AC(C-1), phosphoric acid AC(C-2), and carbonization AC(C-3) without any chemical activation. To characterize the activated carbon and the removal efficiencies of Fe(III) and Mn(II) from aqueous solutions, various analytical tools were used. The results revealed that the capacities of the four adsorbents to adsorb Fe(III) or Mn(II) from an aqueous solution differ significantly. AC(C-3) was chosen for additional research. The impact of different operational factors, including pH, contact time, adsorbent dosage, starting metal ion concentration, interfering ions, and temperature, were investigated. The optimum pH values for Fe(III) and Mn(II) adsorption were found to be pH 3 and pH 6, respectively. The results obtained were utilized to assess the kinetics and thermodynamics of the adsorption process. The sorption of Fe(III) and Mn(II) ions was found to be a pseudo-second-order kinetic process, and the equilibrium data were fitted with the Langmuir isotherm. Additionally, the evidence suggests that an endothermic mechanism governs the adsorption process. The maximum adsorption capacities of Fe(III) and Mn(II) were 28.9 and 73.47 mg/g, respectively.

show abstract

High performance supercapacitors based on wood-derived thick carbon electrodes synthesized via green activation process

Abstract: Electrical double-layer supercapacitors are one type of electrochemical energy devices promising for next-generation energy storage, while they still suffer from great challenges of inferior energy density and poor tolerance to...

Cited by 83 publications

References 70 publications

Renovation of Agro-Waste for Sustainable Food Packaging: A Review

Renovation of Agro-Waste for Sustainable Food Packaging: A Review

Pb(II) Removal from Aqueous Solutions by Adsorption on Stabilized Zero-Valent Iron Nanoparticles—A Green Approach

Chemically Activated Carbon Based on Biomass for Adsorption of Fe(III) and Mn(II) Ions from Aqueous Solution

Contact Info

Product

Resources

About