Coordinates: 29°32′46″N 75°02′39″E / 29.5462476°N 75.0441286°E / 29.5462476; 75.0441286Chaudhary Devi Lal University, named after Chaudhary Devi Lal, the former Deputy Prime Minister of India was established by the Government of Haryana on 2 April 2003. The University, located at Sirsa 256 km from Delhi and 285 km from Chandigarh, has area of 280 acres (1.1 km2) on the Barnala Road. The University has 24 academic departments, which offer 21 career oriented and specialized courses to the students. It also offers job-oriented courses through distance education..
Developing high-performance supercapacitors (SCs) with low-cost, bio-waste derived electrode materials that possess high specific capacitance (Csp) with maintaining high Energy density (Ed) is highly desirable and remains a major challenge. Herein, we report an Boron, Sulphur doped carbon quantum dots (zero-dimensional nanomaterial (B, S-CQDs)) from the bark of Eucalyptus via hydrothermal method due to excellent electrochemical properties of CQDs. Herein, both experimental and theoretical findings, show that the heteroatom doping successfully promotes the Csp compared to undoped CQDs. As a consequence, the B, S-CQDs demonstrate a high Csp of 405.6 F g− 1 at 0.01 Vs− 1 and 185.6 F g− 1 at 0.05 Vs− 1, revealing excellent electrochemical performance. Along with the B, S-CQDs derived electrode demonstrates superb coulombic efficiency with only 0.9
Boron and Sulphur doped carbon quantum dots (B, S-CQDs) are derived from bio-waste Aerva Javanica (AJ) by using hydrothermal method. Structural and morphological analyses were carried out by using SEM, TEM, FTIR, XRD, BET and XPS etc., which confirmed the effective incorporation of B and S into the CQDs matrix, forming a hierarchical architecture with an excellent specific surface area (SSA 908 m2 g− 1) and uniform elemental dispersion. The results show that doping of B and S can effectively increase the pore number and electronic properties of B, S-CQDs. Electrochemical measurements demonstrated a good Specific Capacitance (Csp) of 470 F g− 1 at 0.01 V s− 1 and 410 F g− 1 at 1 Ag− 1, along with a low charge transfer resistance ( R2 = 0.8 ). The B, S-CQDs-based electrode material operated at 1.0 V, delivering an excellent capacitance retention (99.1
A sunlight-activated photocatalyst that is environmentally friendly and harmless to the surrounding environment could serve as an appropriate choice for wastewater treatment approaches. In the present research, we strengthened TiO2 by employing Carbon Quantum Dots (CQDs) in order to enhance their photocatalytic efficiency and circumvent their efficiency restrictions. Upon thoroughly investigating the TiO2@CQDs hybrids' morphological characteristics, framework, and other capabilities, it became obvious that the CQDs and TiO2 were both properly merged. When the TiO(2)CQDs nanocomposite material was implemented in lieu of unaltered CQDs, the photodegradation of Malachite Green dye (MGD) under solar radiation displayed a spike in reaction rate. The nanocomposite's potential to capture sunlight was substantially enhanced by doping, which additionally improved interfacial charge transfer and segregation. The involvement of active species in the decay of MGD was determined as well by a radical scavenging test. The key attributes that increased the appealing factor of CQDs and TiO2@CQDs nanocomposite with regard to photocatalytic potential were their economic fabrication and environmentally benign reagents.
Nitration of 2-arylimidazo[1,2-a]pyridines has been successfully carried out using a fast, straightforward, and one-step method. This innovative strategy was rigorously examined, focusing on the exclusive use of hypervalent iodine reagents or metallic salts under aqueous, non-aqueous conditions and grinding methods; ultimately leading to the desired outcomes through the combined use of widely used hypervalent iodine reagent iodobenzene diacetate and inexpensive copper nitrate trihydrate using organic solvent dichloromethane at room temperature. Herein, the iodobenzene diacetate reagent act as oxidant and copper nitrate as catalyst as well as the nitro group source. The model reaction method was expanded to a variety of substrates with different electron withdrawing and electron donating groups providing regioselective ortho-nitrated 2-arylimidazo[1,2-a]pyridines in significant yields. Further, the elucidation of the novel nitrated products was meticulously validated using a comprehensive array of analytical tools,1H-NMR, 13C-NMR, FT-IR, and mass spectral analysis. We conducted controlled experiments by blocking one of the possible attacking C-3 site to determine the specific product formed. The introduction of nitro functional group was facilitated through ortho C(sp2)-H activation strategy and the plausible mechanism for the nitration process has been proposed. Overall, the successful implementation of this methodology underscores its potential significance in advancing the synthesis of functionalized heterocycles.
