Bromine doped g-C3N4 with enhanced photocatalytic reduction in U(VI)

Xue, Jinming; Wang, Bo; Li, Ziqiang; Xie, Zong‐Bo; Zhang, Le

doi:10.1007/s11164-021-04568-7

Cited by 17 publications

(8 citation statements)

References 53 publications

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“…Meanwhile, uranium contamination also poses a potential threat to human health and the environment. The treatment of uranium-containing wastewater is a major issue of environmental protection and has attracted worldwide attention [4][5][6]. Therefore, the recovery of uranium in wastewater and the safe treatment of uranium containing wastewater are of great signi cance to ensure the sustainable development of nuclear energy.…”

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confidence: 99%

Synthesis of crystalline carbon nitride with molten salt thermal treatment for efficient photocatalytic reduction and removal of U(VI)

Wang

Zhu

et al. 2023

Res Chem Intermed

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It is critical to recover uranium from wastewater containing U(VI) and to ensure the commercial development of nuclear related energy sources. With the rapid development of photocatalytic technology, the extraction and recovery methods of uranyl ions from contaminated areas has become clearer. However, it faces several challenges, such as low charge carrier migration and lack of active sites. In order to improve the e ciency of photocatalytic reduction of uranium, the crystallized carbon nitride (CCN) catalysts at different temperatures were successfully obtained and well characterized. The effects of catalyst dosage, pH value of solution and concentration of U( ) on the photocatalytic reactions, as well as the photoreduction mechanisms were investigated in detail. The results demonstrate that CCN can effectively remove U( ) by photocatalytic reduction, which has a great application prospect for the treatment of uranium-containing wastewater. Highlights 1. The CCN was synthesized by molten salt thermal treatment.2. The CCN had signi cantly improved charge separation and transfer performance compared with bulk CN.3. The CCN-500 had 2.5 times higher photocatalytic activities than that of bulk CN in photocatalytic reduction of U(VI).4. The CCN-500 exhibited excellent stability and reproducibility after ve cycles.

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Section: Introductionmentioning

confidence: 99%

Synthesis of crystalline carbon nitride with molten salt thermal treatment for efficient photocatalytic reduction and removal of U(VI)

Wang

Zhu

et al. 2023

Res Chem Intermed

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“…the catalytic behavior of gCN, many functionalization techniques have been explored for a wide variety of applications. Metals, 34,38,39 non-metals, 32,40 metal oxide, 41 organic functional groups, 42,43 halogens, 35,[44][45][46][47][48] hetero atoms, [49][50][51][52] metal composites, [17][18][19] and nanoparticles 53,54 are the few commonly used functional moieties.…”

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“…47 Bromine functionalization is anticipated to produce more active sites among the four main halogens (F, Cl, Br, and I), boosting the photocatalytic behavior. 48 Bromine functionalization to the gCN retains the intrinsic structure of the gCN 35 and is a potential candidate that operates in the visible range and finds immense applications. 48 For example, the intrinsic materials performance of In 4 Se 2.5 and graphene have been significantly enhanced with the Br doping.…”

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confidence: 99%

“…48 Bromine functionalization to the gCN retains the intrinsic structure of the gCN 35 and is a potential candidate that operates in the visible range and finds immense applications. 48 For example, the intrinsic materials performance of In 4 Se 2.5 and graphene have been significantly enhanced with the Br doping. Previous literature reports also show that Br doping into TiO 2 :Sm 3+ could improve its photocatalytic activity.…”

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confidence: 99%

“…This can be advantageous for applications including fabrication of sensors and electronic devices. 42,48 For the efficient detection of DA, gCN is functionalized with bromine in two different weight fractions. The characteristics of the Br-gCN of two different weight fractions namely, Br-1gCN and Br-2gCN are studied and compared with the pristine gCN.…”

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confidence: 99%

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Electrochemical Quantification of Dopamine Sensing in Human Samples Using Bromine Doped Layered gC₃N₄ Nanosheets

Vasu,

Ravi,

Subramaniyam

et al. 2023

J. Electrochem. Soc.

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Halogen, bromine (Br)-doped layered graphitic carbon nitride (gCN) nanosheets are constructed for a novel electrochemical detection of dopamine. The Br is successfully immobilized on gCN host lattice, in which Br provides an N-vacancy for -C-N bonding to improve electron transfer and enhance its electrocatalytic properties. The prepared nanosheets are studied by various analytical analyses and the electrochemical behavior of the designed electrode is studied using cyclic voltammetry. The Br-gCN decorated screen-printed carbon electrode (SPCE) has superior electrochemical activity and is stable during exposure to varied pH but exhibited better catalytic activity at pH 7. The Br-gCN/SPEC electrodes and their high electrocatalytic performance are used for the detection of dopamine with a lower limit of detection (LoD) of 5 nM concentration. The Br-gCN decorated electrodes exhibited satisfactory results for cyclic stability (up to 100th cycle), repeatability (up to six cycles), reproducibility of similarly constructed 6 electrodes, and their electrochemical performance. Furthermore, the fabricated sensor also exhibited a better recovery (> 80%) for real-time urine sample analyses.

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Metal-free g-C3N4/melem nanorods hybrids for photocatalytic degradation of methyl orange

Wang

Zhang

et al. 2022

Res Chem Intermed

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Bromine doped g-C3N4 with enhanced photocatalytic reduction in U(VI)

Cited by 17 publications

References 53 publications

Synthesis of crystalline carbon nitride with molten salt thermal treatment for efficient photocatalytic reduction and removal of U(VI)

Synthesis of crystalline carbon nitride with molten salt thermal treatment for efficient photocatalytic reduction and removal of U(VI)

Electrochemical Quantification of Dopamine Sensing in Human Samples Using Bromine Doped Layered gC₃N₄ Nanosheets

Metal-free g-C3N4/melem nanorods hybrids for photocatalytic degradation of methyl orange

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Bromine doped g-C3N4 with enhanced photocatalytic reduction in U(VI)

Cited by 17 publications

References 53 publications

Synthesis of crystalline carbon nitride with molten salt thermal treatment for efficient photocatalytic reduction and removal of U(VI)

Synthesis of crystalline carbon nitride with molten salt thermal treatment for efficient photocatalytic reduction and removal of U(VI)

Electrochemical Quantification of Dopamine Sensing in Human Samples Using Bromine Doped Layered gC3N4 Nanosheets

Metal-free g-C3N4/melem nanorods hybrids for photocatalytic degradation of methyl orange

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Electrochemical Quantification of Dopamine Sensing in Human Samples Using Bromine Doped Layered gC₃N₄ Nanosheets