Synthesis of Surface Oxygen-deficient BiPO4 Nanocubes with Enhanced Visible Light Induced Photocatalytic Activity

Abstract

The visible light driven BiPO 4 nanocubes with sufficient surface oxygen deficiency were fabricated by a hydrothermal process and subsequently ultrasonic assistant Fe reduction process. The products were characterized by XRD, DRS, XPS, SEM and TEM which showed that the BiPO 4 had cuboid-like shape with a smooth surface and clear edges and the oxygen vacancies were succesfully introduced on the surface of the BiPO 4 nanocubes. The as prepared oxygen-deficient BiPO 4 nanocubes showed greatly enhanced visible light induced photocatalytic activity in degradation of Rhodamine B. The enhanced photocatalytic performance and expanded visible light response of BiPO 4 may be due to the introduction of surface oxygen vacancies which can generate the oxygen vacancies mid-gap states lower to the conduction band of BiPO 4 .

A novel Z‐scheme Er3+:Yb0.5Y2.5Al5N0.01F0.01O11.98/g‐C3N4–Pt–BiPO4 photocatalyst for enhanced photocatalytic degradation of azofuchsin and ciprofloxacin

“…[23][24][25] However, the ultraviolet light only accounts for a small portion of sunlight, which limits the application of BiPO 4 in photocatalytic degradation. [26][27][28] As an outstanding up-conversion luminescence agent, Er 3+ :Yb n Y 3−n Al 5 N x F y O 12−x−y has a broad development prospect because it can make full use of low energy lights and provide high energy ultraviolet light. Therefore, the use of Er 3+ :Yb n Y 3−n Al 5 N x F y O 12−x−y can be used for satisfying the requirement of BiPO 4 for ultraviolet light.…”

“…No references were found on modeling of the PIP process for CMCs, though experimental studies on this manufacturing process have been reported. Studies on polycarbosilanederived SiC ceramic 25 and SiC/SiC composite 26,27 have shown that porosity decreases and mechanical properties improve with the increasing number of PIP cycles. Zhu et al 28 show that increasing pyrolysis temperature and the concentration of SiC fillers in polycarbosilane polymer result in improved mechanical properties in two-dimensional Carbon/ SiC (C/SiC) composites fabricated using the PIP process.…”

Butterfly wing architectures inspire sensor and energy applications

“…Photocatalysis demonstrates superior advantages over other techniques. They include ecological friendliness, capability of performance at ambient temperatures and efficiency to effectively degrade pollutants even at low concentrations [ 150 ]. The principal aim of photocatalysis is centered on the development of efficient photocatalysts that effectively utilize sunlight [ 151 ].…”

Visible light responsive heterostructure HTDMA-BiPO4 modified clays for effective diclofenac sodium oxidation: Role of interface interactions and basal spacing

“…At the same time, creative and yet-to-be-devised approaches to fix its drawbacks are needed to benefit from this promising photocatalyst for its use in photocatalytic wastewater treatment. Several approaches have been already reported to enhance the adsorption ability and visible light response of BiPO4 such as doping [20][21][22], heterojunction systems [23][24][25], oxygen vacancy [26][27][28][29], phase junction [30][31][32], and combination with π-conjugated materials [33][34][35].…”