Adsorption efficacy of functionalized Cu-BDC MOFs tethered 2-mercaptobenzimidazole analogue: A comparative study

Challa, Malathi; Chinnam, Sampath; Rajanna, Ambika Madalakote; Nandagudi, Apurva; Yallur, Basappa C.; Adimule, Vinayak

doi:10.1016/j.heliyon.2023.e13223

Cited by 5 publications

(5 citation statements)

References 44 publications

(65 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, pristine biochar without and with surface modification using Fe, Fe with Mn have exhibited the adsorption capacity as 1FeC > 1Fe2MnC > PB in pH of 7 at 298 K. In the same manner, good adsorption of arsenic ions has been observed on activated carbon surfaces modified with iron or cerium compounds due to chemi-sorption including physisorption [14]. Activated carbon without surface modification is more beneficial to use for the adsorption of toxic metal ions by taking into account the cost, minimal sludge production, eco-friendly and no disposal problem than the surface-modified activated carbon [12][13][14][15]. In light of above consideration and the part of ongoing work, it is worthwhile to synthesize activated carbon from the Poaceae family species (Zea mays) has been selected for the effective adsorption of arsenic ions in an aqueous medium.…”

Section: Introductionmentioning

confidence: 71%

“…The method of synthesis of carbon and its activation plays a role in the crystallinity. The orthorhombic crystalline peaks that appeared at 2θ 26.61º, 43.45º, 46.32º, 54.81º and 56.68º are relevant to (111), (100), ( 110), ( 222) and (211) planes, respectively [5,6,[12][13][14][15][16].…”

Section: Resultsmentioning

confidence: 99%

“…The roots of Zea mays were collected, cleaned, cut down to small pieces and dehydrated at 105-110 ºC for 2 days. Pulverization and ground of the roots were done to get a fine powder which was further subjected to pyrolysis at 600 ± 50 ºC in the presence of calcium oxide for 30 min under a nitrogen flow of 100 mL/min [12][13][14].…”

Section: Synthesis Of Activated Carbonmentioning

confidence: 99%

“…With zinc chloride thermal activation of carbonized sample obtained from the Dialium guineense seed shell has shown an adsorption capacity of 47.08 mg/g [4][5][6]12,13]. Similarly, pristine biochar without and with surface modification using Fe, Fe with Mn have exhibited the adsorption capacity as 1FeC > 1Fe2MnC > PB in pH of 7 at 298 K. In the same manner, good adsorption of arsenic ions has been observed on activated carbon surfaces modified with iron or cerium compounds due to chemi-sorption including physisorption [14].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Removal of Arsenic by Adsorption using Activated Carbon Derived from Zea mays

Suresh Kumar,

Challa,

Murali Krishna

et al. 2023

ajc

View full text Add to dashboard Cite

The toxic pollutant arsenic ions present in the soil and water induce severe environmental and health issues in the North East of India and most of the Asian countries. This demand exploring the adsorption of arsenic ions in an aqueous medium by using a low-cost and non-pollutant adsorbent that is activated carbon obtained from the Poaceae family species (Zea mays). Activated carbon with calcium oxide (CaO) has been synthesized by pyrolysis at 650 ºC in the inert atmosphere. The characterization of activated carbon was done using a powder X-ray diffractometer, Fourier scanning electronic microscope, energy dispersive X-ray analysis and an inductively coupled plasma-mass spectrometer. The adsorption mechanism and efficacy of activated carbon were explored under optimized parameters such as pH of 5, 1 mg/mL of activated carbon dosage and 10 ppm of As(III) ions concentration at ambient temperature. The adsorption capacity of the activated carbon from the non-linear Sips model was found to be 8.4 mg/g and the linear Langmuir model was 29.85 mg/g. The adsorption mechanism from the non-linear, linear kinetic studies and Web Morris intraparticle diffusion model suggested the adsorption of arsenic ions by mass transfer, a diffusion mechanism as well as pseudo-second-order kinetics. Based on the results of desorption experiments, it is possible that the adsorbent can be reused for adsorption process for two cycles.

show abstract

Section: Introductionmentioning

confidence: 71%

Section: Resultsmentioning

confidence: 99%

Section: Synthesis Of Activated Carbonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Removal of Arsenic by Adsorption using Activated Carbon Derived from Zea mays

Suresh Kumar,

Challa,

Murali Krishna

et al. 2023

ajc

View full text Add to dashboard Cite

show abstract

“…They include carbon-based materials with exceptionally large surface areas (between 2180 and 3100 m 2 g -1 ) that have a specific capacitance value between 100 and 300 F g -1 [23 -17]. For instance, Yamauchi et al reported the creation of different nanoporous carbons by carbonizing ZIF-8, and they employed these materials as the electrode material for electrical double-layer capacitors (EDLCs) [24,25]. Due to the redox processes occurring during the charge/discharge process, heavily mixed metals in this MOF series were discovered to exhibit higher performances when compared to a single metal.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical High-Performance Hybrid Supercapacitors of Carbon Nanosphere Doped 3D Zr (II) Linked 4-{[(1E)-1-Hydroxy-3-Oxoprop-1-En-2-Yl]Sulfanyl}Benzoic Acid Metal Organic Frameworks

Nandi,

Adimule,

Kerur

et al. 2023

AMR

View full text Add to dashboard Cite

In the present research work, carbon nanosphere (5 wt. %, 10 wt. % and 15 wt. %)/Zr- based metal organic frame works (CNS: Zr (II)-MOFs) with different molar ratios of the legend 4-{[(1E)-1-Hydroxy-3-Oxoprop-1-En-2-yl] Sulfanyl} Benzoic Acid (HOSBA) have been successfully synthesized by hydrothermal method. Studies using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA) have validated certain structural, optical, and morphological features. The supercapacitance performance of the synthesized MOFs was investigated using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). At a current density of 0.5 A g-1 and at a scan rate of 10 mV/s, the 15% CNS doped Zr-MOF demonstrated highest specific capacitance (Cs) of 239.4 F g-1. 15 wt.% CNS doped Zr-MOF proven power density of 2100 W kg-1 and maximum energy density of 14.82 Wh Kg-1 with capacitive retention of 77.63 % following 2000 cycles mark this combination a good for supercapacitors (SCs) material. Regardless of the synthetic conditions, we achieved MOFs which exhibited hetero structure formation with spherical morphologies. The results open us new and energy approach for the supercapacitor of the Zr-metal based MOFs and applications in the photonics, optoelectronics, and promising electrode material for electrochemical energy storage systems.

show abstract