A5052178810- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Electrocatalysts for Energy Conversion
- Catalytic Processes in Materials Science
- Advanced Photocatalysis Techniques
- Crystallography and molecular interactions
- Microgrid Control and Optimization
- Catalysis and Hydrodesulfurization Studies
- Solar Radiation and Photovoltaics
- Ammonia Synthesis and Nitrogen Reduction
- Hybrid Renewable Energy Systems
- Photovoltaic System Optimization Techniques
- Energy and Environment Impacts
- Advanced DC-DC Converters
- Multilevel Inverters and Converters
- Catalysis for Biomass Conversion
- Thermochemical Biomass Conversion Processes
- Solar Thermal and Photovoltaic Systems
- Hydrogen Storage and Materials
- MXene and MAX Phase Materials
- Polyoxometalates: Synthesis and Applications
- Supercapacitor Materials and Fabrication
- Advanced Memory and Neural Computing
- Advanced battery technologies research
- Silicon Effects in Agriculture
UNSW Sydney
2020-2024
Pakistan Institute of Engineering and Applied Sciences
2021-2024
University of Hafr Al-Batin
2022-2023
University of Gujrat
2022
Majmaah University
2019-2021
National University of Sciences and Technology
2013-2019
Gomal University
2019
Institute of Space Technology
2017
Layered double hydroxides (LDHs) are promising catalysts for the oxygen evolution reaction (OER) given their modular chemistry and ease of synthesis. Herein, we report a facile strategy inclusion vacancies (VO) using Ce as promoter in Co–Ni LDHs that significantly enhances activity OER. In situ X-ray absorption spectroscopy (XAS) uncovers an increase octahedral Co sites VO upon addition promotes transformation LDH into oxyhydroxide-reactive phase more readily. The presence OER-active...
Abstract Designing electrocatalysts with high activity and durability for multistep reduction oxidation reactions is challenging. High‐entropy alloys (HEAs) are intriguing due to their tunable geometric electronic structure through entropy effects. However, understanding the origin of exceptional performance identifying active centers hindered by diverse microenvironment in HEAs. Herein, NiFeCoCuRu HEAs designed an average diameter 2.17 nm, featuring different adsorption capacities various...
Atomically dispersed Co–Fe dual sites on nitrogen doped microporous carbon are constructed for ORR with superior performance, while XAS, differential PDF dPDF and DFT studies reveal the relationship between catalytic performance local chemical environment.
Abstract Electrochemical biomass oxidation coupled with hydrogen evolution offers a promising route to generate value‐added chemicals and clean energy. The complex adsorption behavior of 5‐hydroxymethyl furfural (HMF) hydroxyl ions (OH − ) on the electrocatalyst surface during HMF electrooxidation reaction (HMFOR) necessitates an in‐depth understanding active sites available for adsorption. Herein, oxygen vacancy (V O defects are introduced in NiFe layered double hydroxide (LDH) using Ce...
Abstract In this study, scalable, flame spray synthesis is utilized to develop defective ZnO nanomaterials for the concurrent generation of H 2 and CO during electrochemical reduction reactions (CO RR). The designed achieves an /CO ratio ≈1 with a large current density ( j ) 40 mA cm −2 long‐term continuous reaction at cell voltage 2.6 V. Through in situ atomic pair distribution function analysis, remarkable stability these structures explored, addressing knowledge gap understanding dynamics...
Ammonia is an industrially relevant chemical that can be directly synthesized from water and air using renewable energy through the electrochemical nitrogen reduction reaction (NRR). However, because of inert nature nitrogen, current attempts at synthesizing ammonia under aqueous conditions result in low selectivity yield rates. The poor electrocatalytic performance mainly attributed to competing hydrogen evolution, underexposed active sites, inadequate electrode contact,...
Relationship between d-metal active species (Co, Ni, & Cu) in Prussian blue analogue derived metal oxide/hydroxide films and the activation energy needed for full conversion of 5-HMF to 2,5-FDCA alkaline solution.
Sodium borohydride (NaBH4) is a potential candidate for hydrogen storage; however, its high thermodynamic stability has hampered practical use. Doping NaBH4 with transition metals an efficient way to improve properties; even the most effective dopants, temperatures required release are still too (above 400 °C) Herein, we report on vanadium-doped (V-NaBH4) nanocubes and related core–shell like (V-NaBH4@Ni) structure, which outperforms conventional metal (e.g., Co, Cu, Fe, Nb, Ti)-doped...
Gallia-based shells with a thickness varying from submonolayer to ca. 2.5 nm were prepared by atomic layer deposition (ALD) using trimethylgallium, ozone, and partially dehydroxylated silica, followed calcination at 500 °C. Insight into the atomic-scale structure of these was obtained high-field 71Ga solid-state nuclear magnetic resonance (NMR) experiments modeling X-ray differential pair distribution function data, complemented Ga K-edge absorption spectroscopy 29Si dynamic polarization...
Abstract The gross domestic product (GDP) of Pakistan is deteriorating by power shortage. floating PV (FPV) on lakes and dams can address this problem generating energy at cheaper rates reducing evaporation water the same time. best location selected comparing available solar resources, nearby load, storage land, performance parameters such as yield (EY), capacity factor (CF), levelized cost (LCOE), net present (NPC). analytic hierarchy process (AHP) shows that for FPV in Chinna Creek...
Introduction of photovoltaic (PV) systems in grid causes some complex power quality problems such as harmonics, voltage fluctuation, and load imbalance that can affect the coordinated PV system performance. Therefore, herein, a novel normalized reasoning‐based fuzzy neural adaptive (NRFNA) control technique is proposed for double‐stage coupled solar system. In addition, utmost tracked at dissimilar environmental states by hybrid krill herd spider monkey (HKHSM)‐based maximum point tracking...
Controlled synthesis of Ni 2− x Rh P nanoparticle catalysts enables an understanding composition-dependent selectivity for the hydrodeoxygenation reaction phenolic molecules.
The core-shell approach has surfaced as an attractive strategy to make complex hydrides reversible for hydrogen storage; however, no synthetic method exists taking advantage of this approach. Here, a detailed investigation was undertaken effectively design freestanding NaBH4 @Ni nanoarchitectures and correlate their properties with structure chemical composition. It shown that the Ni shell growth on surface particles could be kinetically thermodynamically controlled. latter led varied...
Abstract Photovoltaic (PV) estimation in an urban environment requires detection of rooftop area, design PV system based on optimization placement distance and the study additional benefit lower cooling load building by shading provided panels. The is aimed at policymakers to introduce renewable energy policy toward net-zero buildings areas. In this research, capital city Pakistan, Islamabad, analyzed for capabilities using deep learning algorithms. area calculated extracting high-resolution...
Selective uranium extraction from seawater by dopant engineered layered double hydroxide.
Fabricating highly effective, durable, eco-friendly, and low-cost electrocatalysts are challenging in renewable energy applications. Manganese(II) oxide (MnO), an oxygen evolution reaction (OER) catalyst, is appealing contender electrocatalytic water oxidation. Herein, we report the fabrication of single-phase MnO films over nickel foam (NF) as 3D electrode materials via a facile aerosol-assisted chemical vapor deposition (AACVD). HR-TEM confirms nanoscale composition polycrystalline...
Herein, hydrothermal fabrication of CdO-g-C3N4 photocatalyst for a substantially better photocatalytic recital in water splitting is presented. The XRD analysis confirms the cubic phase CdO-g-C3N4, whereas FTIR and UV-VIS studies revealed presence respective groups median band gap energy (2.55 eV) photocatalyst, respectively, which further enhanced its photo-electrochemical (PEC) properties. SEM displays oblong structures g-C3N4 sheets nano rod-like morphology CdO respectively. HR-TEM...
Single-stage power conversion with simple circuit arrangement is one of the attractive features direct bipolar voltage ac-ac converters. This increases their potency in various applications that require and frequency regulation. The grid compensators, variable speed drives, induction heating systems inverting non-inverting operation input voltage. Their size, cost, complexity directly depend on number switching transistors, as each transistor requires use gate drive (GDC) isolated dc supply...