Increased photocatalytic activity caused by B doping into BiVO4

Sudrajat, Hanggara; Hartuti, Sri

doi:10.1007/s11164-018-03725-9

Cited by 10 publications

(3 citation statements)

References 36 publications

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“…Upon sunlight illumination (90 min), a Bi 0.92 Gd 0.07 Y 0.01 VO 4 photocatalyst exhibited 94% degradation efficiency for methylene blue dye (MB), which is four times larger than pure BiVO 4 . Recently, Sudrajat and Hartuti [93] used a one-step hydrothermal preparation method to prepare B-doped BiVO 4 (B-BiVO 4 ) with an oval-shaped morphological structure. The B dopant acts as mid-gap-state electron donors, allowing more excitations of the band gap to be produced and the conduction band of BiVO 4 .…”

Section: Metal/nonmetal-doped Bivomentioning

confidence: 99%

BiVO4 As a Sustainable and Emerging Photocatalyst: Synthesis Methodologies, Engineering Properties, and Its Volatile Organic Compounds Degradation Efficiency

et al. 2023

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Bismuth vanadate (BiVO4) is one of the best bismuth-based semiconducting materials because of its narrow band gap energy, good visible light absorption, unique physical and chemical characteristics, and non-toxic nature. In addition, BiVO4 with different morphologies has been synthesized and exhibited excellent visible light photocatalytic efficiency in the degradation of various organic pollutants, including volatile organic compounds (VOCs). Nevertheless, the commercial scale utilization of BiVO4 is significantly limited because of the poor separation (faster recombination rate) and transport ability of photogenerated electron–hole pairs. So, engineering/modifications of BiVO4 materials are performed to enhance their structural, electronic, and morphological properties. Thus, this review article aims to provide a critical overview of advanced oxidation processes (AOPs), various semiconducting nanomaterials, BiVO4 synthesis methodologies, engineering of BiVO4 properties through making binary and ternary nanocomposites, and coupling with metals/non-metals and metal nanoparticles and the development of Z-scheme type nanocomposites, etc., and their visible light photocatalytic efficiency in VOCs degradation. In addition, future challenges and the way forward for improving the commercial-scale application of BiVO4-based semiconducting nanomaterials are also discussed. Thus, we hope that this review is a valuable resource for designing BiVO4-based nanocomposites with superior visible-light-driven photocatalytic efficiency in VOCs degradation.

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Section: Metal/nonmetal-doped Bivomentioning

confidence: 99%

BiVO4 As a Sustainable and Emerging Photocatalyst: Synthesis Methodologies, Engineering Properties, and Its Volatile Organic Compounds Degradation Efficiency

et al. 2023

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“…Lubricating oils play an important role in the long-term and reliable operation of equipment, implementation of intelligent and green manufacturing, industrial foundations, and other major engineering systems. Various additives are typically added to lubricating oil to prolong its service life and greatly improve its thermal stability and antioxidant properties [5][6][7][8][9][10]. Among these, antioxidant properties are indispensable; thus, antioxidants must be added to lubricating oils to slow down the rate of oxidation deterioration.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Property Analysis of Antioxidant of Carbazole Derivatives

Zhi-quan,

Jing-yu,

Bao-wei

et al. 2023

Preprint

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Carbazole derivatives can be used as antioxidants in the lubricating- oil industry. The alkylation of carbazole with bromoisopropane and chlorotert butane catalyzed by anhydrous aluminum chloride was studied. 3,6-di-iso-propylcarbazole and 3,6-di-tert-butylcarbazole were synthesized from dichloromethane and dibromomethane at ,25 ℃ respectively. The effects of reaction time, catalyst dosage, and the molar ratio of carbazole to chloroalkanes were investigated, and orthogonal experiments were carried out. The structures of the carbazole derivatives were characterized by IR and MS. The thermal stability of the synthesized carbazole derivatives was investigated using differential scanning calorimetry (DSC). The carbazole derivatives were added to the lubricating oil with a mass fraction of 0.8%, and the miscibility, stability and oxidation resistance of the mixed system were evaluated using the mechanical stirring method and rotary pressure vessel oxidation test. The DSC results showed good thermal stability for the carbazole derivatives. The mechanical stirring method also proved that the mixture of oil and carbazole derivatives has good solubility and stability. The results of the rotary pressure vessel oxidation test showed that isopropyl and tertbutyl carbazole derivatives increased the oxidation-induction period of the lubricating oil by 1.39 and 1.91 times, respectively.

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“…Additionally, non-metal doping can induce the formation of oxygen vacancies, so non-metal doping is also an effective means to enhance the photocatalytic activity of BiVO 4 . Sudrajat et al 10 successfully prepared B-doped BiVO 4 (B-BiVO 4 ) with an elliptical morphology by a hydrothermal method, and proposed that B doping produces a partially occupied intermediate bandgap state, which excites the conduction band of BiVO 4 with additional electrons, thereby enhancing the photocatalytic performance. F À can be used as a structure directing agent to synthesize BiVO 4 polyhedral crystals surrounded by high-index {1 2 1} and {2 1 3} faces.…”

Section: Introductionmentioning

confidence: 99%