Hexagonal phase MoO3 with three-dimensional crystal structure as heterogeneous photocatalyst for tetracycline degradation: Degradation pathways and mechanism

Li, Lei; Zhao, Yan; Wang, Jun-Jie; Cui, Ruixue; Li, Yanyan; Qi, Liuyi; Liu, Yahui; Bai, Yan; Dang, Dongbin

doi:10.1016/j.molstruc.2023.136681

Cited by 2 publications

(2 citation statements)

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“…Later in 2010, Lunk et al reported single crystals of hexagonal MoO 3 described by the formula (NH 4 ) 0.13 ∞ 3 [Mo 0.86 □ 0.14 O 2.58 (OH) 0.13 (H 2 O) 0.29– n ]· n H 2 O . The crystal structure of the first hexagonal “molybdenum bronze” compound NH 4 Mo 6 O 18 was reported by Zhang et al A recent report by Li et al documented the crystal structure of hexagonal MoO 3 , with empty tunnels devoid of any cation in the tunnels …”

Section: Introductionmentioning

confidence: 97%

“…14 The crystal structure of the first hexagonal "molybdenum bronze" compound NH 4 Mo 6 O 18 was reported by Zhang et al 31 A recent report by Li et al documented the crystal structure of hexagonal MoO 3 , with empty tunnels devoid of any cation in the tunnels. 32 The most unique structural feature of hexagonal MoO 3 is the presence of one-dimensional tunnels that provide channels for facile ion migration and diffusion, 15,33 leading to impressive intercalation/encapsulation chemistry and excellent charge transfer kinetics, thus enabling it to perform as the electrode material for Li, Al, and Zn ion batteries, 21,34−39 electro-and photochromic material, 15,40 pseudocapacitive material, 23,24,41 electrocatalysts, 41−44 etc. The hydrogen evolution reaction (HER) is a crucial electrocatalytic pathway to produce clean energy and alleviate the global energy crisis.…”

Section: ■ Introductionmentioning

confidence: 99%

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Hexagonal Mo Bronze: Single Crystal Structures, Electrocatalytic Hydrogen Evolution, and Proton Conductivity

Premanand,

Jana,

Unnikrishnan

et al. 2024

Inorg. Chem.

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Molybdenum trioxide (MoO 3 ) is a well-known transition metal oxide that has drawn much attention as a functional material having numerous applications. However, a vast majority of studies have primarily focused on α-MoO 3 , the thermodynamically stable polymorph of MoO 3 . This present work encompasses the synthesis of single crystals of two metastable hexagonal MoO 3 described by the formulas {Mn 0.03 Na 0.01 } @ [ M o 0 . 9 3(2), their comprehensive structural characterization by single-crystal X-ray crystallography, and routine spectral and microscopic studies. Interestingly, compound 1 acts as an efficient electrocatalyst for the hydrogen evolution reaction (HER) as well as an effective proton conductor in comparison to the performance of compound 2. The HER activity of compound 1 is characterized by an overpotential of 340 mV@1 mA cm −2 and a low Tafel slope of 75 mV/decade. The catalyst (compound 1) displays a Faradaic efficiency of 88% with a turnover frequency of 2.9 s −1 . The proton conductivity value of this compound (1) is determined to be 4.9 × 10 −3 S cm −1 at 55 °C under 98% relative humidity; the relevant proton conduction is operated by the Grotthuss mechanism with an activation energy of 0.17 eV.

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Section: Introductionmentioning

confidence: 97%

Section: ■ Introductionmentioning

confidence: 99%

Hexagonal Mo Bronze: Single Crystal Structures, Electrocatalytic Hydrogen Evolution, and Proton Conductivity

Premanand,

Jana,

Unnikrishnan

et al. 2024

Inorg. Chem.

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Designing Molybdenum Trioxide and Hard Carbon Architecture for Stable Lithium‐Ion Battery Anodes

Shahzad,

Rasul,

Mamlouk

et al. 2024

Adv Materials Inter

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Molybdenum Trioxide (MoO3) is a promising candidate as an anode material for lithium‐ion batteries (LIB), with a theoretical capacity of 1 117 mAhg−1. Nevertheless, MoO3 has inherent lower electronic conductivity and suffers from significant volume expansion during the charge–discharge cycle, which hinders its ability to attain a substantial capacity and cyclability for practical applications. In this study, a novel material design strategy is reported for LIB anodes containing MoO3 and hard carbon (HC) architecture fabricated using a Physical Vapor Deposition (PVD) technique. MoO3/HC as anode materials are evaluated for LIBs, which demonstrate an exceptional performance with a capacity of 953 mAhg−1 at a discharging rate of 0.2 C. Additionally, MoO3/HC anode demonstrated exceptional rate capability during fast charging at 5 C and achieved a capacity of 342 mAhg−1. The MoO3/HC anode demonstrates remarkable cycle life, retaining over > 99% Coulombic efficiency after 3 000 cycles at a rate of 0.2 C. The exceptional performance of MoO3/HC anode can be attributed to the novel material design strategy based on a multi‐layered structure where HC provides a barrier against the possible volumetric expansion of LIB anode.

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Hexagonal phase MoO3 with three-dimensional crystal structure as heterogeneous photocatalyst for tetracycline degradation: Degradation pathways and mechanism

Cited by 2 publications

References 49 publications

Hexagonal Mo Bronze: Single Crystal Structures, Electrocatalytic Hydrogen Evolution, and Proton Conductivity

Hexagonal Mo Bronze: Single Crystal Structures, Electrocatalytic Hydrogen Evolution, and Proton Conductivity

Designing Molybdenum Trioxide and Hard Carbon Architecture for Stable Lithium‐Ion Battery Anodes

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