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Waqas Qamar Zaman
Researcher at University of the Sciences
Publications - 53
Citations - 1407
Waqas Qamar Zaman is an academic researcher from University of the Sciences. The author has contributed to research in topics: Catalysis & Oxygen evolution. The author has an hindex of 16, co-authored 41 publications receiving 755 citations. Previous affiliations of Waqas Qamar Zaman include East China University of Science and Technology & National University of Science and Technology.
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Different mechanisms between biochar and activated carbon for the persulfate catalytic degradation of sulfamethoxazole: Roles of radicals in solution or solid phase
TL;DR: In this paper, two biochar produced from pyrolysis of peanut shell at 400°C and 700°C (BC700) were used to assist persulfate (PS) catalytic degradation of sulfamethoxazole (SMX), a commercial AC was included as a comparison.
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Unraveling the Beneficial Electrochemistry of IrO2/MoO3 Hybrid as a Highly Stable and Efficient Oxygen Evolution Reaction Catalyst
TL;DR: In this article, the authors reported the OER beneficial mixed oxide composite of molybdenum and iridium oxides by a facile hydrothermal method, which exhibited a robust nature toward harsh acidic water electrolysis as compared to an alkaline environment.
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Iridium substitution in nickel cobaltite renders high mass specific OER activity and durability in acidic media
Waqas Qamar Zaman,Wei Sun,Muhammad Tariq,Zhenhua Zhou,Usman Farooq,Zain Abbas,Limei Cao,Ji Yang +7 more
TL;DR: In this paper, the authors explored inverse spinel, nickel cobaltite, as a host structure that provides OER beneficial structural motif to iridium sites on account of relatively higher IrO6 edge sharing than in rutile IrO2.
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OER activity manipulated by IrO 6 coordination geometry: an insight from pyrochlore iridates
TL;DR: Characterizations reveal that distorted IrO6 in Pb-Ir induces a disappearance of J = 1/2 subbands in valence band, while Bi-Ir and IrO2 resist this nature probe, and DFT calculations indicated the distortion in IrO 6 geometry can optimize binding strength between Ir-5d and O-2p due to broader d band width.
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Ni–Co Codoping Breaks the Limitation of Single-Metal-Doped IrO2 with Higher Oxygen Evolution Reaction Performance and Less Iridium
Waqas Qamar Zaman,Zhiqiang Wang,Wei Sun,Zhenhua Zhou,Muhammad Tariq,Limei Cao,Xue-Qing Gong,Ji Yang +7 more
TL;DR: In this article, a codoped solid iridium solution with cobalt and nickel atomically substituted 50% of the precious metal in the host structure of the iridium lattice, and the synthesized codoped irO2 reflected an overpotential of only 285 mV at a current density of 10 mA·cm-2, which is appreciably lower than the 320 and 330 mV for individually doping cobalt, respectively.