Usman Bin Shahid

ORCID: 0000-0003-0443-4941
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About
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Research Areas
  • Ammonia Synthesis and Nitrogen Reduction
  • Advanced Photocatalysis Techniques
  • Caching and Content Delivery
  • Thermal properties of materials
  • Phase Change Materials Research
  • Nanoparticles: synthesis and applications
  • Advancements in Battery Materials
  • Microplastics and Plastic Pollution
  • biodegradable polymer synthesis and properties
  • Nuclear Materials and Properties
  • Fusion materials and technologies
  • Advanced Battery Materials and Technologies
  • Green IT and Sustainability
  • Adsorption and biosorption for pollutant removal
  • ZnO doping and properties
  • Semiconductor materials and devices
  • MXene and MAX Phase Materials
  • Solar Thermal and Photovoltaic Systems
  • Innovative concrete reinforcement materials
  • Electrocatalysts for Energy Conversion
  • Recycling and Waste Management Techniques
  • Graphene research and applications
  • Laser-Plasma Interactions and Diagnostics
  • Natural Fiber Reinforced Composites
  • Graphene and Nanomaterials Applications

University of Hong Kong
2019-2024

Hong Kong University of Science and Technology
2019-2024

Lahore University of Management Sciences
2024

Qatar Foundation
2018-2023

Hamad bin Khalifa University
2018-2023

University of Ontario Institute of Technology
2021

Olive stones have been widely used as a renewable energy biowaste source. As they are rich in elemental carbon (40–45 wt%), much research focussed on effectively converting olive stones, precursors, into activated adsorbents. However, only few studies concentrated summarising the various techniques to produce from stone. This article reviews undertaken production and application of an adsorbent for wastewater treatment. Various physical, chemical physico-chemical treatments remove heavy...

10.1007/s13399-019-00473-7 article EN cc-by Biomass Conversion and Biorefinery 2019-08-09

In this work, a few-layered MoSe2 on Ti3C2Tx MXene (MoSe2/Ti3C2Tx), obtained via simple one-step hydrothermal synthesis and thermal annealing, is investigated for its potential application as an active electrochemical nitrogen reduction reaction (eNRR) catalyst. The MoSe2/Ti3C2Tx catalyst achieved NH3 yield rate of 56.96 μg h–1 mgcat–1 at −0.50 V vs RHE Faradic efficiency (FE) 14.08% −0.35 with remarkable stability. Meanwhile, the density functional theory (DFT) calculations suggest that Mo...

10.1021/acscatal.2c01172 article EN ACS Catalysis 2022-05-13

Plastic waste is an underutilized resource that has the potential to be transformed into value-added materials. However, its chemical diversity leads cost-intensive sorting techniques, limiting recycling and upcycling opportunities. Herein, we report open-loop method produce graded feedstock from mixed polyolefins waste, which makes up 60% of total plastic waste. The uses heat flow scanning quantify composition resolves compatibility through controlled dissolution. resulting then used...

10.1016/j.gee.2023.08.004 article EN cc-by-nc-nd Green Energy & Environment 2023-08-30

10.1016/j.coelec.2021.100790 article EN Current Opinion in Electrochemistry 2021-06-26

Abstract A glut of dinitrogen‐derived ammonia (NH 3 ) over the past century has resulted in a heavily imbalanced nitrogen cycle and consequently, large‐scale accumulation reactive such as nitrates our ecosystems led to detrimental environmental issues. Electrocatalytic upcycling waste back into NH holds promise mitigating these impacts reducing reliance on energy‐intensive Haber–Bosch process. Herein, we report high‐performance electrolyzer using an ultrahigh alkalinity electrolyte,...

10.1002/anie.202403633 article EN cc-by-nc-nd Angewandte Chemie International Edition 2024-03-22

Abstract A glut of dinitrogen‐derived ammonia (NH 3 ) over the past century has resulted in a heavily imbalanced nitrogen cycle and consequently, large‐scale accumulation reactive such as nitrates our ecosystems led to detrimental environmental issues. Electrocatalytic upcycling waste back into NH holds promise mitigating these impacts reducing reliance on energy‐intensive Haber–Bosch process. Herein, we report high‐performance electrolyzer using an ultrahigh alkalinity electrolyte,...

10.1002/ange.202403633 article EN cc-by-nc-nd Angewandte Chemie 2024-03-22

Graphene aerogels are widely used in the oil–water system as they possess high internal surface area and super-oleophilic properties. However, tend to absorb water along with oil, overcome this problem; coatings generally employed using expensive fluoro-silane compounds. It leads an increase production costs environmental concerns. Herein, we report super-hydrophobic 3D graphene selective oil sorbent for oil–water​ separation. The reduction of oxygen-containing functional groups on has been...

10.1016/j.egyr.2022.10.076 article EN cc-by Energy Reports 2022-10-20

PCMs show great promise as thermal energy storage (TES) medium; however, their low conductivity presents a major bottleneck for potential application. Enhancement of the paraffin based PCM material using GNP in combination with CNF, CNTs and TRG was investigated this work. SEM used to qualitatively assess dispersion & distribution hybrid-nanofillers. DSC determine melting temperature, capacity latent heat, whereas measured Hot Disk TPS Thermal Conductivity Instrument (TPS2500S). An overall...

10.1088/1757-899x/380/1/012008 article EN IOP Conference Series Materials Science and Engineering 2018-06-01

The erosion and redeposition of first-wall armor materials is a problem in nuclear fusion devices with carbon walls, where deuterium, tritium, (eroded) present the plasma are deposited on walls device, trapping expensive radiologically hazardous tritium. Thermo-oxidation, which vessel surfaces heated oxygen containing gas injected, possible solution. It results production oxides tritiated water vapor, can be pumped out by vacuum pumps recycled tritium recycling facility. In study,...

10.1080/15361055.2021.1883979 article EN Fusion Science & Technology 2021-05-04
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