Chemical Engineering Journal, Год журнала: 2022, Номер 454, С. 140230 - 140230
Опубликована: Ноя. 10, 2022
Язык: Английский
Applied Catalysis B Environment and Energy, Год журнала: 2019, Номер 268, С. 118381 - 118381
Опубликована: Ноя. 9, 2019
Язык: Английский
Процитировано
194
Nanoscale Horizons, Год журнала: 2020, Номер 5(5), С. 765 - 786
Опубликована: Янв. 1, 2020
Photocatalysis is attracting increased attention in solving the energy crisis and environmental pollution. Graphitic carbon nitride (g-C3N4), a non-metal photocatalyst, has been regarded as an ideal photocatalyst to solve these problems because of its chemical stability unique optical properties. However, traditional g-C3N4 exhibits moderate photocatalytic activity due low specific surface area fast recombination rate photogenerated electrons. Among many modified materials, porous (PCN) can shortcomings PCN's number surface-active sites, area, light harvesting, diffusion adsorption/activation. frontier, comprehensive summary development PCN less reported. Thus, review on recent developments research urgently needed further promote advancement. In this review, synthesis methods, structures properties applications photocatalysts are described detail. The current challenges future PCN/PCN-based discussed. This may present up-to-date view provide in-depth understanding PCN-based photocatalysts.
Язык: Английский
Процитировано
191
ACS Omega, Год журнала: 2019, Номер 4(24), С. 20530 - 20539
Опубликована: Ноя. 25, 2019
The current environmental and potable water crisis requires technological advancement to tackle the issues caused by different organic pollutants. Herein, we report degradation of pollutants such as Congo Red acetophenone from aqueous media using visible light irradiation. To harvest solar energy for photocatalysis, fabricated a nanohybrid system composed bismuth ferrite nanoparticles with two-dimensional (2D) MXene sheets, namely, BiFeO3 (BFO)/Ti3C2 (MXene) nanohybrid, enhanced photocatalytic activity. hybrid BFO/MXene is simple low-cost double-solvent solvothermal method. SEM TEM images showed that BFO are attached onto surface 2D sheets. achieved found be 100% in 42 min dye (Congo Red) colorless pollutant (acetophenone) 150 min. exhibited large area 147 m2 g-1 measured via Brunauer-Emmett-Teller sorption-desorption technique, which largest among all derivatives. photoluminescence spectra indicate low electron-hole recombination rate. Fast efficient molecules two factors: larger lower rate, makes highly photocatalyst promising candidate many future applications.
Язык: Английский
Процитировано
171
ACS Catalysis, Год журнала: 2022, Номер 12(11), С. 6345 - 6358
Опубликована: Май 12, 2022
The construction of intramolecular homojunction in the carbon nitride framework is one advantageous methods to improve photocatalytic performance. Based on molecular self-assembly strategy form homojunction, showed enhanced activity. However, disordered structure pristine g-C3N4 obtained using traditional approach inhibits dissociation and migration photocarriers. Here, we adopt a method prepare crystalline C3N4 (HCCN) with functional group modifications ternary by multistep thermal polymerization. band indicates that cyano cyanamide-based units HCCN samples have different highest occupied orbital/lowest unoccupied orbital energy levels, which constitute special through arrangement levels an internal electron field molecule. analysis photoelectron–hole pairs performance confirms accelerates interface charge transfer reduces reverse recombination. Moreover, compact greatly improves photogenerated charges. Femtosecond transient absorption spectra explain trajectory carrier kinetics confirm crystal semiconductor modified groups can promote excitons free This research provides idea obtain homojunctions.
Язык: Английский
Процитировано
170
Solar RRL, Год журнала: 2019, Номер 4(3)
Опубликована: Дек. 17, 2019
Water shortage and the energy crisis are two major global challenges in this century. The solution for water should be based on a sustainable source. Solar‐inspired purification is an efficient green technology tackling challenge using abundant clean solar through photothermal evaporation‐induced production, photoinduced antimicrobial treatment, photocatalytic degradation of organic contaminants. 2D nanomaterials draw significant attention their use these three water‐purification methods because large surface area, broadband strong absorption spectral range, transformation. Herein, recent development applied evaporation, capability comprehensively overviewed. Various strategies enhancing light‐absorption light‐conversion efficiency different presented. perspectives further discussed practical purification. This Review highlights energy–driven emerging materials.
Язык: Английский
Процитировано
164
Applied Catalysis B Environment and Energy, Год журнала: 2020, Номер 266, С. 118617 - 118617
Опубликована: Янв. 11, 2020
Язык: Английский
Процитировано
162
Nanoscale, Год журнала: 2019, Номер 11(40), С. 18797 - 18805
Опубликована: Янв. 1, 2019
CdS nanoparticles are uniformly decorated on plasma-modified Ti3C2Tx sheets with oxygen-containing groups to achieve a high photocatalytic hydrogen-production activity.
Язык: Английский
Процитировано
159
ACS Omega, Год журнала: 2019, Номер 4(5), С. 8661 - 8668
Опубликована: Май 17, 2019
Over the years, scarcity of fresh potable water has increased demand for clean water. Meanwhile, with advent nanotechnology, use nanomaterials photocatalytic degradation pollutants in wastewaters increased. Herein, a new type nanohybrids La- and Mn-codoped bismuth ferrite (BFO) nanoparticles embedded into transition-metal carbide sheets (MXene-Ti3C2) were prepared by low-cost double-solvent sol-gel method investigated their catalytic activity dark photoinduced conditions. The photoluminescence results showed that pure BFO highest electron hole recombination rate as compared to all codoped BFO/Ti3C2 nanohybrids. higher electron-hole pair generation provides suitable environment fast organic dye molecules. band gap nanohybrid was tuned 1.73 eV. Moreover, BLFO/Ti3C2 BLFMO-5/Ti3C2 degraded 92 93% pollutant, respectively, from remaining light spectrum. Therefore, these synthesized could be promising candidate applications future.
Язык: Английский
Процитировано
156
Surfaces and Interfaces, Год журнала: 2020, Номер 22, С. 100890 - 100890
Опубликована: Дек. 20, 2020
TiO2 has already established itself as one of the most attractive nanomaterials for functionalisation textiles due to its unique structural, physicochemical, optical and electrical properties, nontoxicity low cost. This review paper provides a comprehensive overview recent advances in chemical physical modification textile fibres with nanoparticles nano-/microstructures summarises important findings on application processes performance TiO2-modified substrates. Photocatalytic self-cleaning, antimicrobial activity, UV protection, hydrophobicity, thermal stability, flame retardancy conductivity are highlighted central discussion topics review. Insights into mechanisms providing functional properties presented; influence various factors functionality is shown; latest strategies surface enhance visible light photocatalytic including multiphase heterojunctions, ion doping, metal doping/loading, coupling other semiconductors sensitization, discussed. presents some new ideas producing TiO2-functionalized surfaces suggests future research perspectives directions this area.
Язык: Английский
Процитировано
144
Journal of Material Science and Technology, Год журнала: 2021, Номер 91, С. 224 - 240
Опубликована: Апрель 28, 2021
Язык: Английский
Процитировано
142