One-pot synthesis of hierarchical Cu2O/Cu hollow microspheres with enhanced visible-light photocatalytic activity

A Review on Preparation and Photocatalytic Hydrogen Evolution of Core-shell Cu2O Composites

Abstract:Due to the appropriate bandgap, Cu2O has been widely studied in the field of photocatalytic hydrogen evolution. The core-shell structure is used to design the photocatalytic semiconductor material, so that...

Nested seaweed cellulose fiber deposited with cuprous oxide nanorods for antimicrobial activity

Bird's nest type architectural network of cellulosic nanofibers was extracted, with nearly 34% yield, from green filamentous seaweed Chaetomorpha antennina using mild bleaching agent. Nanorods of cuprous oxide (Cu₂O) were grown over the porous sheet, prepared from the seaweed cellulose, by one step hydrothermal method. The seaweed cellulose and Cu₂O nanorods deposited seaweed cellulose sheets, were characterized by XRD, SEM-EDX, FT-IR, TGA and tensile test. XRD revealed that seaweed cellulose acted as reducing agent, reducing CuO to Cu₂O. Morphology showed that the average diameter of seaweed cellulose and deposited Cu₂O nanorods were 30 nm and 90 nm, respectively. Cuprous oxide nanorods deposited seaweed cellulose sheet gave very good antibacterial activity towards gram-positive (Staphylococcus aureus, Streptococcus thermophilis) and gram-negative (Pseudomonas aeruginous, Escherichia coli) microbes. The Cu₂O nanorods deposited seaweed cellulose sheet can be viewed to have great potential in biomedical, packaging, biotechnological, textile, water treatment and pharmaceutical applications.

Fast photocatalytic degradation of dyes using low-power laser-fabricated Cu2O–Cu nanocomposites

Facile synthesis of Cu₂O–Cu nanocomposites by using a low-power CO₂laser was realized, and the fabricated nanomaterials showed excellent photocatalytic activity for the degradation of various dyes.

Controlled synthesis of CeVO4 hierarchical hollow microspheres with tunable hollowness and their efficient photocatalytic activity

CeVO₄ hierarchical hollow microspheres assembled from nanoscaled building units (nanoparticles, nanocubes and nanoflakes) were synthesized by a one-step hydrothermal approach using l-Asp as the morphology-directing agent.