Synthesis and photocatalytic property of a novel Ag2S/Bi12O17Cl2 photocatalyst

Zhao, Yalan; Liu, Ting; Si, Weiwei; Cui, Liang; Shi, Lei

doi:10.1016/j.optmat.2023.113557

Cited by 12 publications

(4 citation statements)

References 42 publications

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“…[26] The Cl 2p high-resolution spectrum of Bi 12 O 17 Cl 2 and Ag 6 Si 2 O 7 /Bi 12 O 17 Cl 2 -2 as shown in Figure 2F, where the signals at 199.6 eV and 198.1 eV correspond to Cl 2p 1/2 and Cl 2p 3/2 , respectively. [27,28] The macroscopic appearance of Ag 6 Si 2 O 7 , Bi 12 O 17 Cl 2 and Ag 6 Si 2 O 7 /Bi 12 O 17 Cl 2 -2 catalysts were observed through SEM (Figure 3). Ag 6 Si 2 O 7 alone appears to be a large aggregate…”

Section: Resultsmentioning

confidence: 99%

Flower‐Like Ag₆Si₂O₇/Bi₁₂O₁₇Cl₂ p‐n Heterojunctions: Enhanced Photocatalytic Activity and Mechanistic Insight**

Zhang¹,

Wang

2023

ChemistrySelect

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Photocatalytic degradation is one of the effective ways to remove dyes. Accelerating the separation of photogenerated charge is an effective method for high efficiency visible‐driven catalysis. Here, a potential flower‐like Ag6Si2O7/Bi12O17Cl2 p‐n heterojunctions were successfully prepared. Ag6Si2O7/Bi12O17Cl2 can achieve light capture in a wider range of visible light and provide directional channel for carrier to achieve more efficient space charge separation. The constructed Ag6Si2O7/Bi12O17Cl2 showed excellent photocatalytic removal of 25 mg/L (100 mL) Rhodamine B (RhB) within 20 min. The rate constant for RhB degradation was 0.202 min−1 by Ag6Si2O7/Bi12O17Cl2‐2 which was more than 3.6 times greater than Bi12O17Cl2 (0.055 min−1) and 3.2 times greater than Ag6Si2O7 (0.063 min−1). In addition, the results of free radical capture experiment indicate the ⋅OH plays a leading role in the photocatalytic degradation of RhB and a possible Z‐scheme charge transfer paths and the formation of active species over Ag6Si2O7/Bi12O17Cl2 was proposed to elucidate the reaction mechanism.

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Section: Resultsmentioning

confidence: 99%

Flower‐Like Ag₆Si₂O₇/Bi₁₂O₁₇Cl₂ p‐n Heterojunctions: Enhanced Photocatalytic Activity and Mechanistic Insight**

Zhang¹,

Wang

2023

ChemistrySelect

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“…This study investigates the synergetic effect between biochar and bismuth chloride (Bi 12 O 17 Cl 2 ) for enhancing the photocatalytic performance toward 2,6-DCP degradation. The bismuth-rich material was selected as a photocatalyst because it exhibits outstanding visible light photocatalytic performance for complex compound degradation, owing to its adequate halogen oxidation ratio and special structure (Zhao et al, 2023). However, the rapid recombination of photogenerated charges is a major 2.…”

Section: Introductionmentioning

confidence: 99%

Purification of pesticide-rich wastewater 2,6-dichlorophenol in solar photo-oxidation reactor with visible light

Abodlal,

dessouky,

tawfik

et al. 2024

Preprint

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2,6-Dichlorophenol (2,6-DCP), a compound used for synthesizing medical and pharmaceutical agents, is highly toxic and potentially carcinogenic. Advanced oxidation has been used for the cleavage of strong bonds in 2,6-DCP, giving a reliable and practical option compared with the conventional wastewater treatment systems. Hence, this study focused on the application of a solar photo-oxidation process to treat herbicides wastewater containing 2,6-DCP. Bismuth chloride was combined with biochar to maintain the dual benefits of 2,6-DCP adsorption and degradation concomitantly. The O–Bi–O and Bi–O bonds were successfully detected in the synthesized Bi12O17Cl2, whereas the synergetic effect between Bi12O17Cl2 and biochar was validated by increasing the carbon-based functional groups, reducing particle size (14–32 nm), and creating more active sites of the composite. The initial 2,6-DCP concentration of 122 mg/L was reduced to 17 mg/L (86.0% removal efficiency) within 6 h of photodegradation at a pH of 2.3 and a catalyst dosage of 100 mg/L. Concurrently, the phenol concentration in the aqueous solution increased from 4.7 to 32.4 mg/L, respectively. Reusing the photocatalytic reactions three times by the biochar/Bi12O17Cl2 composite reduced the 2,6-DCP removal efficiency by only 7.7%. Biochar exhibited an adsorption energy of -14.8 kJ/mol to capture 2,6-DCP, and it accumulated photo-excited electrons that react with adsorbed oxygen and/or dissolved oxygen to generate super oxygen radicals (•O2−). Super hydroxyl radicals (•OH) could also be generated from the positive holes (h+) in the valence band of Bi12O17Cl2. These radicals could cleave C–Cl bonds of 2,6-DCP, generating Cl− ions, dechlorinated product 2-CP, and phenols. The treatment of wastewater containing 2,6-DCP by the proposed biochar-based photocatalyst could cost 10.3 USD/m3.

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“…The multifaceted characteristics of g-C 3 N 4 -based photocatalysts are emphasized, encompassing their crystal structure, surface physicochemical properties, stability, optical properties, adsorption capabilities, electrochemical behavior, photoelectrochemical performance, and electronic features. 7,13 A comprehensive examination is conducted on various design approaches, such as band-gap alteration, defect management, adjustment of dimensionality, customization of pore texture, surface enhancement, creation of heterojunctions, incorporation of cocatalysts, 14 and loading of nanocarbons. 15,16 The core of the nanohybrid was occupied by a magnetic member as magnetite nanoparticles, while the arrangement of ions in it was the existence of dual trivalent (Fe 3+ ) and divalent (Fe 2+ ) states.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The g-C 3 N 4 utilizes solar energy that can be greatly enhanced by the comparatively small and narrow band gap of the material (2.8 eV); a material that has the capability to combine both organic and inorganic properties in a perfect way for creating photocatalytic membranes. The multifaceted characteristics of g-C 3 N 4 -based photocatalysts are emphasized, encompassing their crystal structure, surface physicochemical properties, stability, optical properties, adsorption capabilities, electrochemical behavior, photoelectrochemical performance, and electronic features. , A comprehensive examination is conducted on various design approaches, such as band-gap alteration, defect management, adjustment of dimensionality, customization of pore texture, surface enhancement, creation of heterojunctions, incorporation of cocatalysts, and loading of nanocarbons. , The core of the nanohybrid was occupied by a magnetic member as magnetite nanoparticles, while the arrangement of ions in it was the existence of dual trivalent (Fe 3+ ) and divalent (Fe 2+ ) states. Fe 2+ ions occupy half of the octahedral sites as ferric ions link the adjacent tetrahedral that occupied octahedral sites, ensuing the cubic inverse spinel arrangement. − Due to its extraordinary antiferromagnetic properties, researchers put views toward it to blend the reusability properties with the NC and it holds good for several cycles …”

Section: Introductionmentioning

confidence: 99%

Solid Handmade Ternary Coinage Metal Mentors for Organic Bond-Making and Bond-Breaking Applications

Ravichandran,

Jayachandran,

Annamalai

et al. 2024

Langmuir

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A comparative approach is employed for the novel synthesis of a magnetically recoverable ternary nanocomposite consisting of g-C 3 N 4 -supported Fe 3 O 4 decorated with coinage metals (Au, Ag, and Cu). This synthesis is achieved through a straightforward and convenient one-step grinding protocol. In situ, the nanoparticles were grown on the g-C 3 N 4 -assist Fe 3 O 4 matrix (GCFM), and the agglomeration of these nanoparticles on the matrix creates a pathway for the formation of the nanocomposite (NC). The as-formed CNC was confirmed with the help of characterization analyses, namely XRD, FT-IR, HR-TEM, FE-SEM, XPS, VSM, UV−vis, and NMR studies. Together with NPs and GCFM, with the quantum consequence, the activity of the NC shows better electron transfer via transfer of electrons, which grabs tremendous attention toward it, resulting in enhanced plausible photocatalytic degradation toward pharmaceutical compounds, dyes, and anthropogenic pollutants. The activity of the C-NC hikes at 88% for ciprofloxacin (CX) and 90% for paracetamol (PM); furthermore, the activity of the C-NC hikes at 88% and 87% for xylene Cyanol FF (XCF) and malachite green (MLG), respectively. Interestingly, an added advantage is the formation of a C−C bond (homocoupling reaction) in phenylboronic acid (PA) via a greener solvent under ambient conditions. The yield percentage of the conversion product shows satisfactory results, and its reproducibility was good for the prepared ternary NC. The conversion treatment of anthropogenic pollutants, namely 4-nitrophenol, grasps a high percentage (98%). In addition, the NC shows good activity toward both types of bacteria. The reproducibility of the composite also shows virtuous activity against pharmaceutical as well as toxic contaminants. The as-prepared CNC was specifically engineered to perform both bond formation and bond cleavage of organic molecules under ambient conditions for multiple cycles.

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Synthesis and photocatalytic property of a novel Ag2S/Bi12O17Cl2 photocatalyst

Cited by 12 publications

References 42 publications

Flower‐Like Ag₆Si₂O₇/Bi₁₂O₁₇Cl₂ p‐n Heterojunctions: Enhanced Photocatalytic Activity and Mechanistic Insight**

Flower‐Like Ag₆Si₂O₇/Bi₁₂O₁₇Cl₂ p‐n Heterojunctions: Enhanced Photocatalytic Activity and Mechanistic Insight**

Purification of pesticide-rich wastewater 2,6-dichlorophenol in solar photo-oxidation reactor with visible light

Solid Handmade Ternary Coinage Metal Mentors for Organic Bond-Making and Bond-Breaking Applications

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Synthesis and photocatalytic property of a novel Ag2S/Bi12O17Cl2 photocatalyst

Cited by 12 publications

References 42 publications

Flower‐Like Ag6Si2O7/Bi12O17Cl2 p‐n Heterojunctions: Enhanced Photocatalytic Activity and Mechanistic Insight**

Flower‐Like Ag6Si2O7/Bi12O17Cl2 p‐n Heterojunctions: Enhanced Photocatalytic Activity and Mechanistic Insight**

Purification of pesticide-rich wastewater 2,6-dichlorophenol in solar photo-oxidation reactor with visible light

Solid Handmade Ternary Coinage Metal Mentors for Organic Bond-Making and Bond-Breaking Applications

Contact Info

Product

Resources

About

Flower‐Like Ag₆Si₂O₇/Bi₁₂O₁₇Cl₂ p‐n Heterojunctions: Enhanced Photocatalytic Activity and Mechanistic Insight**

Flower‐Like Ag₆Si₂O₇/Bi₁₂O₁₇Cl₂ p‐n Heterojunctions: Enhanced Photocatalytic Activity and Mechanistic Insight**