Phthalocyanine-based Porous Polymers for Precious Metals Recovery from Industrial Waste


Project Description

Precious metals (Au, Pt, Pd, …) are of high values and can be extracted via urban-mining instead of the traditional ore-mining processes. The higher density of these elements in electronic waste, industrial catalyst leachates, jewelry wastewater, … than in ores render recovery strategies from these waste sources more economical and environmentally beneficial. The biggest challenge for such methods is to achieve a high selectivity for the extraction of the metal of interest. We have successfully developed a series of porous porphyrin-based polymers for selective adsorption of precious metals especially gold from electronic waste with both high capacities and selectivity. Critical design features involve 1) strong binding of porphyrin rings to precious metal ions due to matching size between the rings and the metal ions and robust coordinating ability from nitrogen atoms, 2) enhanced contact surface owing to high porosity of the polymers, and 3) feasibility of synthetic protocol allowing scale-up potential. We anticipate that these principles could be extended to polymers built upon phthalocyanine core which is structurally similar to porphyrin with otherwise additional nitrogen sites and hence can exhibit improved recovery strength.
Program - Chemistry
Division - Physical Sciences and Engineering
Center Affiliation - Advanced Membranes and Porous Materials Center
Field of Study - Water Treatment

About the

Cafer T. Yavuz

Professor, Chemistry

Cafer T. Yavuz

​Prof. Yavuz's research interests focus on developing sustainable nano & porous materials chemistry to address global challenges in the environment, particularly those related to CO2, water, and methane. His current projects include dry reforming of methane for circular carbon economy, CO₂ capture with tethered amines, CO₂ conversion to cyclic carbonates, water capture from air, methane storage in porous polymers, electrocatalytic water splitting, electronic waste recycling, seawater mining, and micro pollutant removal from water.

Desired Project Deliverables

Synthesize 5 phthalocyanine monomers and their corresponding polymers Preliminary precious metal adsorption study