KNbO3/ZnO heterojunction harvesting ultrasonic mechanical energy and solar energy to efficiently degrade methyl orange

Abstract

Graphical abstract

Preparation of rGO‐CNT/Ag3PO4/Nb2O5 composite with enhanced photoresponse properties as a highly effective visible light driven photocatalyst

“…Dye effluents from the textile and photographic industries are becoming serious environmental problems and public health concerns due to their toxicity, high chemical oxygen demand content, unacceptable color, and biological degradation. [1][2][3] The conventional strategies currently being employed to degrade textile effluent are based on the processes of reverse osmosis/membrane filtration, 4 electrocoagulation, 5 coagulation/flocculation, 6 and adsorption on activated carbon. 7 However, these strategies are not efficient because they only transfer the organic pollutant into sludge, resulting in a new sort of pollution that needs further treatment.…”

Highly efficient removal of 2,4‐dichlorophenal over a novel dual Z‐scheme heterojunction of Bi7O9I3/BiOIO3/g‐C3N4 under visible‐light irradiation: performance and mechanism

“…Therefore, removing it from polluted water through technological means an urgent task. Recently, catalysis employing solar power‐driven semiconductors and piezoelectric semiconductors has been regarded as one of the potential green methods to eliminate the pollutants in the air and water under mild conditions 5‐9 . Although much effort has been devoted to developing photocatalytic techniques to degrade 2,4‐DCP, their low photocatalytic efficiency greatly hinders their practical application.…”

“…Recently, catalysis employing solar power-driven semiconductors and piezoelectric semiconductors has been regarded as one of the potential green methods to eliminate the pollutants in the air and water under mild conditions. [5][6][7][8][9] Although much effort has been devoted to developing photocatalytic techniques to degrade 2,4-DCP, their low photocatalytic efficiency greatly hinders their practical application. The rapid electron-hole recombination in photocatalysts is regarded as one of the main reasons for the low degradation efficiency.…”

Synergistically enhanced solar light‐driven degradation of hazardous food colorants by ultrasonically derived MgFe2O4/S‐doped g‐C3N4 nanocomposite: A Z‐scheme system‐based heterojunction approach

“…[21] In addition to their detrimental effects on amphibian life, the incorporation of these toxic colorants into living organisms via bioaccumulation may further lead to carcinogenic and mutagenic effects. [18] Conventionally, the eradication of such toxic colorants from the waste water streams relies on numerous techniques including biodegradation, [22] adsorption, [23,24] photocatalysis, [25][26][27] coagulation, flocculation, [28] reverse osmosis, [29] sedimentation, piezocatalysis, [30,31] and microwave catalysis. [32][33][34] However, the majority of the mentioned methods are economically unfavoured, less efficient, technically complicated, or require special operational conditions for the removal of by-products/ secondary waste products.…”