Facile and Green Approach to the Synthesis of Boron Nitride Quantum Dots for 2,4,6-Trinitrophenol Sensing

Abstract

A facile and green approach has been developed for synthesis of boron nitride quantum dots (BNQDs). The obtained BNQDs exhibit strong fluorescence and excellent stabilities, including high thermostability, good salt tolerance stability, pH-independence ability, and excellent antiphotobleaching capability. The strong inner filter effect between 2,4,6-trinitrophenol (TNP) and BNQDs resulted in fluorescence quenching of BNQDs. Thus, TNP can be selectively and sensitively detected in the concentration range of 0.25-200 μM, with a limit detection of 0.14 μM. The BNQD-based turn-off sensor shows potential prospects for rapidly and selectively detecting TNP in natural water samples without tedious sample pretreatment processes.

Multiple Emitting Amphiphilic Conjugated Polythiophenes‐Coated CdTe QDs for Picogram Detection of Trinitrophenol Explosive and Application Using Chitosan Film and Paper‐Based Sensor Coupled with Smartphone

“…In contrast, fluorescent sensors for the detection of nitroexplosive have attracted huge attention due to their simplicity, ultrasensitivity, fast response time, and extensive applicability . Hence, various fluorescent sensors for explosives detection have been developed based on combined surface‐imprinting and paper‐based microfluidic chip techniques, manganese‐doped carbon quantum dots (QDs), nitrogen and sulfur co‐doped graphene QDs, boron nitride QDs, metal organic frameworks, hybrid CdTe QDs, and conjugated polymers (CPs) . However, these methods still possess some disadvantages such as the use of organic solvents, low sensitivity and selectivity, and nonapplicability for on‐site detection.…”

A Fluorescence Sensing Determination of 2, 4, 6-Trinitrophenol Based on Cationic Water-Soluble Pillar[6]arene Graphene Nanocomposite

“…For example, Rong et al [13] developed a label-free fluorescence sensing method that used chemically oxidized and liquid exfoliated g-C 3 N 4 nanosheets for the determination of TNP with a detection limit of 8.2 × 10 −6 M. Ma et al [14] prepared dual-emissive electropolymerization films as fluorescent probe for the detection of TNT. Peng et al [15] constructed a new boron nitride quantum dots (BNQD)-based turn-off probe for the sensitive detection of TNP based on the strong inner filter effect (IFE) between TNP and the BNQDs—the linear range was 2.5 × 10 −7 –2.0 × 10 −4 M and the detection limit was 1.4 × 10 −7 M.…”

“…Many fluorescent probes have been prepared for TNP determination including the graphitic carbon nitride (g-C 3 N 4 ) nanosheets [14,15], metal-organic frameworks [16], transition-metal dichalcogenide nanostructures [17], graphene quantum dots (GQDs) [18], conjugated polymers (CPs) [19], and other carbon-based nanomaterials [20,21]. Although many fluorescence sensing probes have been reported, the selectivity and sensitivity are relative unsatisfied.…”

A Facile and High Selectivity Novel Fluorescence Sensing Determination of 2, 4, 6-Trinitrophenol Based on Cationic Water-Soluble Pillar[6]arene Graphene Nanocomposite

“…[14] For example, Rong et al 15 developed a label-free fluorescence sensing method that used chemically oxidized and liquid exfoliated g-C3N4 nanosheets for the determination of TNP with a detection limit of 8.2 × 10 −6 M. Ma et al 16 prepared dual-emissive electropolymerization films as fluorescent sensors for the detection of TNT. Peng et al 17 constructed a new BNQD-based turn-off sensor for the sensitive detection of TNP based on the strong IFE between TNP and the BNQDs-the linear range was 2.5 × 10 −7 -2.0 × 10 −4 M and the detection limit was 1.4 × 10 −7 M.…”

“…Many fluorescent probes have been prepared for TNP determination including the graphitic carbon nitride (g-C3N4) nanosheets, [15][16][17] metal-organic frameworks, [18][19][20][21][22] transition-metal dichalcogenide nanostructures, [23,24] graphene quantum dots (GQDs), [25][26][27] conjugated polymers (CPs), [28] and other carbon-based nanomaterials. [29][30][31][32][33][34] Although many fluorescence sensing probes have been reported, none are suitably fast, sensitive and selective.…”