One-step route for Z-scheme Al2(WO4)3/Bi2WO6 heterojunction toward superior photoelectric and photocatalytic performance

Herein, Al2(WO[Formula: see text]/Bi2WO6 heterojunctions with [Formula: see text]-type structure were successfully prepared by a one-step hydrothermal method. Moreover, the effects of different composite ratios on the properties of materials were explored. The electrochemical tests and photocatalytic degradation experiments showed that the corresponding Al2(WO[Formula: see text]/Bi2WO6 heterojunctions all exhibited improved electrochemical performance and photocatalytic performance than that of the bare Bi2WO6 material. Especially, when the molar ratio of Al to Bi was 2:1, the obtained Al2(WO[Formula: see text]/Bi2WO6 heterojunction displayed the optimal photoelectric and photocatalytic performance. In detail, it depicted the highest photocurrent density, the smallest resistance and the fastest charge transfer rate. What’s more, the RhB solution (10 ppm) could be completely degraded in 30 min under visible-light irradiation, and the removal rate was almost 1.6 times than that of pure Bi2WO6 nanosheets. In the same condition, it also exhibited excellent photocatalytic performance for the degradation of tetracycline (TC) solution (10 ppm) and the K2Cr2O7 solution (40 ppm). These results fully manifested that the constructed Al2(WO[Formula: see text]/Bi2WO6 heterojunction possessed superior photoelectric conversion capacity and outstanding photocatalytic performance. Moreover, based on the obtained experimental results, a [Formula: see text]-scheme mechanism of catalytic degradation of RhB and TC under simulated solar light was proposed and discussed.

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One-step hydrothermal synthesis and characterization of Cu-doped TiO2 nanoparticles/nanobucks/nanorods with enhanced photocatalytic performance under simulated solar light

Journal of Materials Science Materials in Electronics ◽

10.1007/s10854-019-01766-3 ◽

2019 ◽

Vol 30 (14) ◽

pp. 13826-13834 ◽

Cited By ~ 1

Author(s):

Xiaodong Zhu ◽

Guilan Wen ◽

Hui Liu ◽

Shihu Han ◽

Shanhua Chen ◽

...

Keyword(s):

Hydrothermal Synthesis ◽

Tio2 Nanoparticles ◽

Photocatalytic Performance ◽

Solar Light ◽

Synthesis And Characterization ◽

Doped Tio2 ◽

Simulated Solar Light ◽

One Step

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One-step synthesis of nitrogen-grafted copper-gallic acid for enhanced methylene blue removal

Scientific Reports ◽

10.1038/s41598-021-91484-w ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Shella Permatasari Santoso ◽

Vania Bundjaja ◽

Artik Elisa Angkawijaya ◽

Chintya Gunarto ◽

Alchris Woo Go ◽

...

Keyword(s):

Methylene Blue ◽

Adsorption Capacity ◽

Gallic Acid ◽

Synthesis Method ◽

Molar Ratio ◽

X Ray Diffraction ◽

Temperature Dependent ◽

One Step ◽

Detailed Assessment ◽

Higher Temperature

AbstractNitrogen-grafting through the addition of glycine (Gly) was performed on a metal- phenolic network (MPN) of copper (Cu2+) and gallic acid (GA) to increase its adsorption capacity. Herein, we reported a one-step synthesis method of MPN, which was developed according to the metal–ligand complexation principle. The nitrogen grafted CuGA (Ng-CuGA) MPN was obtained by reacting Cu2+, GA, and Gly in an aqueous solution at a molar ratio of 1:1:1 and a pH of 8. Several physicochemical measurements, such as Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), N2 sorption, X-ray diffraction (XRD), and thermal gravimetry analysis (TGA), were done on Ng-CuGA to elucidate its characteristics. The analysis revealed that the Ng-CuGA has non-uniform spherical shaped morphology with a pore volume of 0.56 cc/g, a pore size of 23.25 nm, and thermal stability up to 205 °C. The applicational potential of the Ng-CuGA was determined based on its adsorption capacity against methylene blue (MB). The Ng-CuGA was able to adsorb 190.81 mg MB per g adsorbent at a pH of 6 and temperature of 30 °C, which is 1.53 times higher than the non-grafted CuGA. Detailed assessment of Ng-CuGA adsorption properties revealed their pH- and temperature-dependent nature. The adsorption capacity and affinity were found to decrease at a higher temperature, demonstrating the exothermic adsorption behavior.

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Hydrothermal Synthesis of Sodalite-Type N-A-S-H from Fly Ash to Remove Ammonium and Phosphorus from Water

Materials ◽

10.3390/ma14112741 ◽

2021 ◽

Vol 14 (11) ◽

pp. 2741

Author(s):

Pengcheng Lv ◽

Ruihong Meng ◽

Zhongyang Mao ◽

Min Deng

Keyword(s):

Fly Ash ◽

Adsorption Capacity ◽

Removal Rate ◽

Kinetic Studies ◽

Solute Concentration ◽

Raw Material ◽

Sodium Aluminosilicate ◽

Equilibrium Data ◽

One Step ◽

Ft Ir

In this study, the hydrated sodium aluminosilicate material was synthesized by one-step hydrothermal alkaline desilication using fly ash (FA) as raw material. The synthesized materials were characterized by XRD, XRF, FT-IR and SEM. The characterization results showed that the alkali-soluble desilication successfully had synthesized the sodium aluminosilicate crystalline (N-A-S-H) phase of sodalite-type (SOD), and the modified material had good ionic affinity and adsorption capacity. In order to figure out the suitability of SOD as an adsorbent for the removal of ammonium and phosphorus from wastewater, the effects of material dosing, contact time, ambient pH and initial solute concentration on the simultaneous removal of ammonium and phosphorus are investigated by intermittent adsorption tests. Under the optimal adsorption conditions, the removal rate of ammonium was 73.3%, the removal rate of phosphate was 85.8% and the unit adsorption capacity reached 9.15 mg/L and 2.14 mg/L, respectively. Adsorption kinetic studies showed that the adsorption of ammonium and phosphorus by SOD was consistent with a quasi-secondary kinetic model. The adsorption isotherm analysis showed that the equilibrium data were in good agreement with the Langmuir and Freundlich model. According to thermodynamic calculations, the adsorption of ammonium and phosphorus was found to be a heat-absorbing and spontaneous process. Therefore, the preparation of SOD by modified FA has good adsorption properties as adsorbent and has excellent potential for application in the removal of contaminants from wastewater.

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MXene-Ti3C2 assisted one-step synthesis of carbon-supported TiO2/Bi4NbO8Cl heterostructures for enhanced photocatalytic water decontamination

Nanophotonics ◽

10.1515/nanoph-2020-0088 ◽

2020 ◽

Vol 9 (7) ◽

pp. 2077-2088 ◽

Cited By ~ 2

Author(s):

Daixun Jiang ◽

Xun Sun ◽

Xilu Wu ◽

Shuai Zhang ◽

Xiaofei Qu ◽

...

Keyword(s):

Charge Separation ◽

Photocatalytic Performance ◽

Separation Efficiency ◽

Salt Flux ◽

The Novel ◽

Water Contaminants ◽

Photocatalytic Removal ◽

One Step ◽

Charge Separation Efficiency ◽

Perovskite Type

AbstractThe strategy to improve the photocatalytic removal efficiencies towards organic pollutants is still a challenge for the novel Sillen–Aurivillius perovskite type Bi4NbO8Cl. Herein, we report carbon-supported TiO2/Bi4NbO8Cl (C-TiO2/Bi4NbO8Cl) heterostructures with enhanced charge separation efficiency, which were fabricated via molten-salt flux process. The carbon-supported TiO2 particles were derived from MXene Ti3C2 precursors, and attached on plate-like Bi4NbO8Cl, acting as electron-traps to achieve supressed recombination of photo-induced charges. The improved charge separation confers C-TiO2/Bi4NbO8Cl heterostructures superior photocatalytic performance with 53% higher than pristine Bi4NbO8Cl, towards rhodamine B removal with the help of photo-induced holes. Moreover, the C-TiO2/Bi4NbO8Cl heterostructures can be expanded to deal with other water contaminants, such as methyl orange, ciprofloxacin and 2,4-dichlorophenol with 44, 25 and 13% promotion, respectively, and thus the study offers a series of efficient photocatalysts for water purification.

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One-step hydrothermal synthesis of N-S-GQDs/Bi2S3 microrods with highly photocatalytic performance for Cr(VI) reduction

Colloids and Surfaces A Physicochemical and Engineering Aspects ◽

10.1016/j.colsurfa.2021.127109 ◽

2021 ◽

pp. 127109

Author(s):

Zhenmin Zhang ◽

Xingqiang Liu ◽

Changlin Yu ◽

Wanqin Zhou ◽

Fang Li

Keyword(s):

Hydrothermal Synthesis ◽

Photocatalytic Performance ◽

One Step

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Activation and β-FeOOH modification of sepiolite in one-step hydrothermal reaction and its simulated solar light catalytic reduction of Cr(VI)

Applied Clay Science ◽

10.1016/j.clay.2016.10.035 ◽

2017 ◽

Vol 135 ◽

pp. 547-553 ◽

Cited By ~ 12

Author(s):

Zhihui Xu ◽

Hongmei Jiang ◽

Yaqun Yu ◽

Jiangyan Xu ◽

Jianru Liang ◽

...

Keyword(s):

Hydrothermal Reaction ◽

Catalytic Reduction ◽

Solar Light ◽

Simulated Solar Light ◽

One Step

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Synergistic effect of co-reactant promotes one-step oxidation of cyclohexane into adipic acid catalyzed by manganese porphyrins

Canadian Journal of Chemistry ◽

10.1139/cjc-2014-0515 ◽

2015 ◽

Vol 93 (7) ◽

pp. 696-701 ◽

Cited By ~ 11

Author(s):

Hui Li ◽

Yuanbin She ◽

Haiyan Fu ◽

Meijuan Cao ◽

Jing Wang ◽

...

Keyword(s):

Synergistic Effect ◽

Co Oxidation ◽

Adipic Acid ◽

Molar Ratio ◽

Reaction Conditions ◽

Catalyst Structure ◽

Manganese Porphyrins ◽

Co Oxidation Reaction ◽

One Step ◽

Acid Catalyzed

The synergistic effect of cyclohexane and cyclohexanone promoted synthesis of adipic acid catalyzed by [MnIIIT(p-Cl)PP]Cl with cyclohexane and cyclohexanone as co-reactants. The results showed that the conversions of cyclohexane and cyclohexanone were significantly enhanced because of the cyclohexanone synergistic effect, and the higher selectivity to adipic acid was obtained with dioxygen as an oxidant. The studies indicated that the co-oxidation of cyclohexane and cyclohexanone was influenced by the initial molar ratio of cyclohexanone and cyclohexane, catalyst structure, catalyst concentrations, and reaction conditions. The preliminary mechanism of the co-oxidation reaction of cyclohexane and cyclohexanone using [MnIIIT(p-Cl)PP]Cl as the catalyst was proposed.

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