TY - JOUR
T1 - Recyclable printed circuit boards and alkali reduction wastewater
T2 - approach to a sustainable copper-based metal-organic framework
AU - Zhang, Shaopeng
AU - Jian, Meipeng
AU - Zhang, Qi
AU - Xu, Rongming
AU - Qu, Jiuhui
AU - Luo, Xubiao
AU - Li, Xiuyu
AU - Hu, Jiukun
AU - Liu, Ruiping
AU - Zhang, Xiwang
PY - 2020/1/27
Y1 - 2020/1/27
N2 - Printed circuit board (PCB) waste contains a high concentration of copper (Cu) leftover from the processing. Another, alkali reduction (AR) wastewater, is considerably produced with a main component of 1,4-benzenedicarboxylic acid (H2BDC) in textile manufacturing. For the sake of environmental sustainability, it is of great significance to recover useful waste sources for reforming into valuable materials. Herein, in this study, for the first time, we report a facile pathway to produce a Cu-based metal-organic framework (CuBDC) in a quantitative yield of 75.45% synthesized by completely using the leaching solutions of PCB and AR wastewater as precursors instead of commercial chemicals. Under a simple stirring condition at room temperature, the as-obtained CuBDC from the wastewater exhibits typical laminar shapes of pure CuBDC crystals. In addition, the wastewater derived CuBDC products were examined with crystalline phase purity, porosity, coordination chemistry, and functional groups. Notably, these characteristics accord well with the concept of high-purity CuBDC. Moreover, the optimal conditions for CuBDC fabrication from PCB and AR wastewater were designed. Lastly, CuBDC from the recycled sources showed high adsorption capacity (5.75 cm3·g-1) and ideal selectivity (10.85) toward CO2 for CO2/CH4, which is unexpectedly outperforming the pure CuBDC. Also in terms of materials cost, the economic feasibility was evaluated. Overall, this work offers a green synthesis pathway for the preparation of sustainable CuBDC by using PCB and AR wastewater.
AB - Printed circuit board (PCB) waste contains a high concentration of copper (Cu) leftover from the processing. Another, alkali reduction (AR) wastewater, is considerably produced with a main component of 1,4-benzenedicarboxylic acid (H2BDC) in textile manufacturing. For the sake of environmental sustainability, it is of great significance to recover useful waste sources for reforming into valuable materials. Herein, in this study, for the first time, we report a facile pathway to produce a Cu-based metal-organic framework (CuBDC) in a quantitative yield of 75.45% synthesized by completely using the leaching solutions of PCB and AR wastewater as precursors instead of commercial chemicals. Under a simple stirring condition at room temperature, the as-obtained CuBDC from the wastewater exhibits typical laminar shapes of pure CuBDC crystals. In addition, the wastewater derived CuBDC products were examined with crystalline phase purity, porosity, coordination chemistry, and functional groups. Notably, these characteristics accord well with the concept of high-purity CuBDC. Moreover, the optimal conditions for CuBDC fabrication from PCB and AR wastewater were designed. Lastly, CuBDC from the recycled sources showed high adsorption capacity (5.75 cm3·g-1) and ideal selectivity (10.85) toward CO2 for CO2/CH4, which is unexpectedly outperforming the pure CuBDC. Also in terms of materials cost, the economic feasibility was evaluated. Overall, this work offers a green synthesis pathway for the preparation of sustainable CuBDC by using PCB and AR wastewater.
KW - Metal-organic framework
KW - Sustainability
KW - Waste recovery
KW - Wastewater
UR - http://www.scopus.com/inward/record.url?scp=85078516810&partnerID=8YFLogxK
U2 - 10.1021/acssuschemeng.9b04754
DO - 10.1021/acssuschemeng.9b04754
M3 - Article
AN - SCOPUS:85078516810
SN - 2168-0485
VL - 8
SP - 1371
EP - 1379
JO - ACS Sustainable Chemistry & Engineering
JF - ACS Sustainable Chemistry & Engineering
IS - 3
ER -