Multi-shelled ZnO decorated with nitrogen and phosphorus co-doped carbon quantum dots: synthesis and enhanced photodegradation activity of methylene blue in aqueous solutions

Abstract

The presence of organic dyes in wastewater has posed a huge threat to aquatic life and human health.

Steering Hollow Multishelled Structures in Photocatalysis: Optimizing Surface and Mass Transport

“…[30,31] One step further, constructing HoMSs with heterogeneous compositions inside out would endow it with sequential light absorption as the nature does. [32,33] Till now, although research efforts on the design of HoMSs materials for photocatalytic applications have been intensively made, [34][35][36][37][38][39][40][41][42][43][44][45][46][47] the impacts of physi-chemical properties of HoMSs on the specific kinetic or energetic bottlenecks in photocatalytic processes have not been comprehensively summarized, which are critically important for further evolvement of efficient HoMSs photocatalysts. In this review, we first briefly introduce the fabrication process, especially the sequential templating approach, followed by discussing the two key parameters for enhancing the photocatalytic performance in optimizing the mass transport and effective surface area, then highlighted rational design for improving the photocatalytic and the applications of HoMSs materials in photocatalysis are enumerated throughout to reveal the research tendency of HoMSs photocatalysts.…”

Carbon quantum dots modified Bi 2 WO 6 nanoflowers for enhancing photocatalytic activity: an experimental and DFT study

“…Carbon materials have attracted widespread attention for designing photocatalysts due to their excellent ability to store/deliver electrons [11]. CQDs, as a novel zero‐dimension carbon material, have attracted extensive interest in photocatalysis [18]. Furthermore, as illustrated by many previously reported kinds of literature, the optical property and quantum yield of CQDs could be further improved by doping modification [18, 19].…”

“…CQDs, as a novel zero‐dimension carbon material, have attracted extensive interest in photocatalysis [18]. Furthermore, as illustrated by many previously reported kinds of literature, the optical property and quantum yield of CQDs could be further improved by doping modification [18, 19].…”

“…2. Experimental: Firstly, the N, P co-doped CQDs solution was synthesised using sodium citrate and ammonium dihydrogen phosphate through a hydrothermal process [18]. The N, P co-doped CQDs were simplified to be CQDs in the present work.…”

Synthesis of MnO2 Hollow Nanospheres through Selective Etching Method as an Effective Absorbent to Remove Methyl Orange from Aqueous Solution

“…Therefore, there is an urgent need to design an efficient method for removing dye molecules from wastewater. Various technologies such as photoelectrocatalysis, mem-brane filtration, chemical oxidation, and adsorption have been proposed to solve this problem [13][14][15][16][17][18]. Nevertheless, these methods are often expensive, technically demanding, or only effective at a certain concentration.…”