TiO2 doped HKUST-1/CM film in the three-phase photocatalytic ammonia synthesis system

Wang, Weiwen; Ji, Zhengnan; Zhang, Delu; Sun, Pengxia; Duan, Jihai

doi:10.1016/j.ceramint.2021.03.265

Cited by 17 publications

(6 citation statements)

References 42 publications

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“…The utilization of photocatalytic nitrogen fixation is increasingly becoming a prominent area of interest. Photocatalytic nitrogen fixation operates at relatively low temperatures and pressures, utilizing solar energy to generate electrons and holes that subsequently react with water protons to reduce N 2 to NH 3 [4]. Semiconductors facilitate photon absorption in the process of photocatalysis, generating electron-hole pairs that drive oxidation-reduction reactions.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Application of 1D Nanomaterials for Photocatalytic Nitrogen Fixation

Ragesh Nath R.,

Deshmukh,

Kamble

et al. 2024

Nitrogen

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Ammonia, as the second most-produced chemical worldwide, serves diverse roles in the industrial and agricultural sectors. However, its conventional production via the Haber–Bosch process poses significant challenges, including high energy consumption and carbon dioxide emissions. In contrast, photocatalytic nitrogen (N2) fixation, utilizing solar energy with minimal emissions, offers a promising method for sustainable ammonia synthesis. Despite ongoing efforts, photocatalytic nitrogen fixation catalysts continue to encounter challenges such as inadequate N2 adsorption, limited light absorption, and rapid photocarrier recombination. This review explores how the electronic structure and surface characteristics of one-dimensional nanomaterials could mitigate these challenges, making them promising photocatalysts for N2 fixation. The review delves into the underlying photocatalytic mechanisms of nitrogen fixation and various synthesis methods for one-dimensional nanomaterials. Additionally, it highlights the role of the high surface area of one-dimensional nanomaterials in enhancing photocatalytic performance. A comparative analysis of the photocatalytic nitrogen fixation capabilities of different one-dimensional nanomaterials is provided. Lastly, the review offers insights into potential future advancements in photocatalytic nitrogen fixation.

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Section: Introductionmentioning

confidence: 99%

Recent Advances in Application of 1D Nanomaterials for Photocatalytic Nitrogen Fixation

Ragesh Nath R.,

Deshmukh,

Kamble

et al. 2024

Nitrogen

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show abstract

Section: Introductionmentioning

confidence: 99%

“…Despite the efficacy of HKUST-1 as an active material to perform several photocatalytic processes, just a few studies have further studied or analyzed some of the most important photocatalytic properties of HKUST-1, including the band structure, the nature of the electronic transitions (direct or indirect) associated with the bandgap value, the dielectric constant ( ε r ), the charge carriers number, or the relationship between the HKUST-1 structure and its efficiency to carry out photocatalytic processes. 17,19–23…”

Section: Introductionmentioning

confidence: 99%

“…The authors observed that TiO 2 coupled to HKUST-1 presented a superior ammonia production than bare TiO 2 due to enhanced adsorption of N 2 and an increment in the reaction area between the reactants and the catalysts. 19 Despite the efficacy of HKUST-1 as an active material to perform several photocatalytic processes, just a few studies have further studied or analyzed some of the most important photocatalytic properties of HKUST-1, including the band structure, the nature of the electronic transitions (direct or indirect) associated with the bandgap value, the dielectric constant (e r ), the charge carriers number, or the relationship between the HKUST-1 structure and its efficiency to carry out photocatalytic processes. 17,[19][20][21][22][23] This work aims to present a comprehensive study to elucidate critical physicochemical parameters by combining experimental and computational approaches to gain deeper insights into the correlation existing between the chemical structure of HKUST-1 and its photocatalytic properties.…”

Section: Introductionmentioning

confidence: 99%

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Elucidating, understanding, and correlating the (photo)electrochemical and physicochemical properties of HKUST-1 through an experimental and computational approach

Alfonso Herrera,

Mondaca,

Conejeros

et al. 2024

New J. Chem.

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“…TiO 2 @MIL-100(Cr) was employed to remove bisphenol A [ 36 ] and toluene [ 37 ]. Other MOFs such as HKUST-1 ( The H ong K ong U niversity of S cience and T echnology ) have also been used to obtain heterostructures with TiO 2 , remove dyes [ 38 ] and synthesize ammonia [ 39 ]. However, few works available in the literature deal with the use of these matrices in the degradation/adsorption of NSAIDs [ 33 ], although these pollutants have attracted extensive attention in recent years.…”

Section: Introductionmentioning

confidence: 99%

Post-synthetic modification of aluminum trimesate and copper trimesate with TiO2 nanoparticles for photocatalytic applications

et al. 2022

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Organic pollutants have been a significant source of concern in recent years due to their facile dissemination and harmful effects. In this work, two different metal–organic frameworks (MOFs) were initially prepared by hydrothermal treatment, namely aluminum trimesate (MIL-100(Al)) and copper trimesate (HKUST-1). These materials were subsequently submitted to a post-synthetic modification step to grow titania nanoparticles on their surface. Anatase nanoparticles with sizes around 5 nm were successfully anchored on MIL-100(Al), and the concentration of TiO 2 in this sample was about 68 wt.%. This is the first time that this composite (TiO 2 @MIL-100(Al)) is reported in the literature. It showed an improved photocatalytic activity, removing 90% of methylene blue ( k app = 1.29 h −1 ), 55% of sodium diclofenac ( k app = 0.21 h −1 ), and 62% of ibuprofen ( k app = 0.37 h −1 ) after four hours of illumination with UV-A light. A significant concentration (14 µM) of reactive oxygen species (ROS) was detected for this composite. HKUST-1 showed a structural collapse during its post-synthetic modification, leading to a non-porous material and providing fewer sites for the heterogeneous nucleation of titania. This behavior led to a low concentration of rutile nanoparticles on HKUST-1 (9 wt.%). However, the obtained composite (TiO 2 @HKUST) also showed an improved photoactivity compared to HKUST-1, increasing the photodegradation rates evaluated for methylene blue (0.05 h −1 vs. 0.29 h −1 ), sodium diclofenac (negligible vs. 0.03 h −1 ), and ibuprofen (0.01 h −1 vs. 0.02 h −1 ). This work brings new insights concerning the preparation of photocatalysts by growing semiconductor nanoparticles on trimesate-based MOFs.

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TiO2 doped HKUST-1/CM film in the three-phase photocatalytic ammonia synthesis system

Cited by 17 publications

References 42 publications

Recent Advances in Application of 1D Nanomaterials for Photocatalytic Nitrogen Fixation

Recent Advances in Application of 1D Nanomaterials for Photocatalytic Nitrogen Fixation

Elucidating, understanding, and correlating the (photo)electrochemical and physicochemical properties of HKUST-1 through an experimental and computational approach

Post-synthetic modification of aluminum trimesate and copper trimesate with TiO2 nanoparticles for photocatalytic applications

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