Low-temperature collapsing boron nitride nanospheres into nanoflakes and their photoluminescence properties

Li, Jie; Luo, Han; Lin, Jianming; Liu, Zhenya; Jin, Peng; Xu, Xuewen; Huang, Yang; Liu, Dong; Zhang, Jun; Tang, Chengchun

doi:10.1088/2053-1591/1/3/035035

Cited by 7 publications

(5 citation statements)

References 37 publications

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“…100 mg of 3D C-BN was added into 200 mL aqueous solution with the initial Cr 3+ concentration of 50 mg/L for Cr 3+ adsorption at room temperature (pH = 5.5). Figure 13a illustrates the fast adsorption rate of 99 wt% within 2 min for removing Cr 3+ , much quicker than the reported activated boron nitride 14 . After 1 h, Cr 3+ in aqueous solution was almost completely removed.…”

Section: Resultsmentioning

confidence: 78%

Novel multifunctional cheese-like 3D carbon-BN as a highly efficient adsorbent for water purification

Liu

Fang

Jia

et al. 2018

Sci Rep

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In this paper, a novel three dimensional carbon boron nitride (3D C-BN) was successfully prepared. The obtained material has porous cheese-like structure and pore size ranging from 2 nm to 100 nm. Attractively, the 3D C-BN, which combines the adsorption advantages of BN and carbon together, exhibits excellent adsorption properties for organic dyes, oils and heavy metal ions. The maximum removal capacities of 3D C-BN for methyl blue (MB) and congo red (CR) are 408 mg g−1 and 307 mg g−1, respectively. Furthermore, 3D C-BN can quickly and efficiently remove oils (salad oil, gasoline and pump oil) and heavy metal ions (Cr3+, Cd2+ and Ni2+) from waste water. The macro bulk 3D C-BN, which is more convenient to use than powdered materials, can be reused by burning or heating in air and still maintains high adsorption capacity. Significantly, these superior performances can find practical application in water purification.

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Section: Resultsmentioning

confidence: 78%

Novel multifunctional cheese-like 3D carbon-BN as a highly efficient adsorbent for water purification

Liu

Fang

Jia

et al. 2018

Sci Rep

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“…The sharpness of the main peaks and the presence of the peak at 76.4°reveal that NaOH-3D BN is well crystallized compared to NaOH-αBN. The higher crystallinity may be ascribed due to the beneficial effect of the NaCl ionic liquid medium (low melting point at 801°C), which enhances the kinetics of the crystallization [31][32][33][34]. Correspondingly, NaOH-3D BN can exhibit better stability during adsorption and catalytic degradation for HCHO as well as the regeneration process [21].…”

Section: Resultsmentioning

confidence: 99%

“…Compared with the previously reported αBN, the SEM images of NaOH-3D BN in figures 2(b) and (c)display obviouslyrough surfaces composed of uniform nanoflakes. A reasonable explanation for the formation of the 3D BN structure is that the ionothermal reaction is beneficial for low-temperature synthesizing BN nanoflakes [33]. Actually, the NaCl-assisted reaction occurred spatially just on the original positions of the precursor so that the as-prepared BN nanoflakes assembled themselves to take the whole 'fiber' shape with perfect copies of the precursor.…”

Section: Resultsmentioning

confidence: 99%

“…With the aim of studying the influence of NaOHembeddment on the interaction between NaOH-3D BN and HCHO, the FTIR spectra of the as-obtained samples were investigated. The dominant vibrations at ∼1387 and ∼811 cm −1 shown in figure 4 are attributed to the in-plane B-N stretching vibration and the B-N-B out-of-plane bending vibration, respectively, which indicate the formation of a BN phase [33].In addition, the broad band at 3450 cm −1 existing in the two samples is related to the stretching vibration of the hydroxyl group [21], suggesting that NaOH-3D BN possesses abundant surface groups. The presence of the hydroxyl groups is conducive to the HCHO adsorption [20].…”

Section: Resultsmentioning

confidence: 99%

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NaOH-embedded three-dimensional porous boron nitride for efficient formaldehyde removal

Jia

Ding

et al. 2015

Nanotechnology

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Volatile organic compounds, especially formaldehyde (HCHO), are considered to be great sources of contaminants in indoor air. However, design and preparation of safe, cost-affordable, and reusable materials for HCHO removal at ambient conditions are still remarkably challenging. Here, we have developed a kind of novel NaOH-embedded three-dimensional porous boron nitride (NaOH-3D BN) with high and hierarchical porosities, which exhibit excellent removal performance for HCHO. The as-prepared 3D BN is used as an adsorbent and catalytic support, while the embedded NaOH is applied as a catalyst, giving rise to catalytic transformation from high-toxic HCHO to less-toxic formate and methoxy salts at room temperature. Furthermore, their effective reusability has been confirmed. Given the high removal and reusability performance as well as no use of precious materials, the NaOH-3D BN is envisaged to be valuable practically for indoor air purification.

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“…Hexagonal boron nitride (hBN) possesses preeminent physical and chemical properties, such as high chemical stability, temperature stability [23], low density, high thermal conductivity, good mechanical strength [24], antioxidation ability [25,26], and is environmentally friendly. Moreover, hBN possesses an outstanding adsorption rate and capacity for the removal of organic dyes in aqueous solution because of the combination of the 3-dimensional BN structure and rich adsorbing sites [27][28][29][30][31][32][33][34].…”

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confidence: 99%

Synthesis and characterization of hexagonal boron nitride used for comparison of removal of anionic and cationic hazardous azo-dye: kinetics and equilibrium studies

Tarhan

2020

Turk J Chem

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The purpose of this study was to compare the adsorption behavior of cationic and anionic dyes onto a hexagonal boron nitride (hBN) nanostructure that was rich in a negative charge. Herein, the hBN nanostructure was synthesized using boric acid as a precursor material. The characteristic peaks of the hBN nanostructure were performed using Fourier transform infrared (FT-IR) and Raman spectroscopies. The morphology and the particle size of hBN nanostructure were determined by transmission electron microscopy (TEM) and scanning electron microscopy (SEM). During the studies, various essential adsorption parameters were investigated, such as the initial dye concentration, pH of the dye solution, adsorbent dose, and contact time. Under optimal conditions, the removal of 42.6% Metanil yellow (MY) and 90% Victoria blue B (VBB) from aqueous solution was performed using a 10-mg hBN nanostructure. Furthermore, the equilibrium studies showed that the Freundlich isotherm model fitted well for the removal of MY. However, the Langmuir isotherm model fitted well for the removal of VBB. Moreover, according to the results obtained from the kinetic studies, while the first-order kinetic model was suited for the adsorption of the MY, the second-order kinetic model was found to well fit for the adsorption of VBB.

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Low-temperature collapsing boron nitride nanospheres into nanoflakes and their photoluminescence properties

Cited by 7 publications

References 37 publications

Novel multifunctional cheese-like 3D carbon-BN as a highly efficient adsorbent for water purification

Novel multifunctional cheese-like 3D carbon-BN as a highly efficient adsorbent for water purification

NaOH-embedded three-dimensional porous boron nitride for efficient formaldehyde removal

Synthesis and characterization of hexagonal boron nitride used for comparison of removal of anionic and cationic hazardous azo-dye: kinetics and equilibrium studies

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