TY - JOUR
T1 - Solution plasma synthesis of Pt-decorated Bi12O17Cl2 photocatalysts for efficient upcycling of plastics
AU - Wu, Feiyan
AU - Li, Changming
AU - Dou, Yibo
AU - Zhou, Jianchi
AU - Jiang, Tao
AU - Yao, Yuechao
AU - Lee, Na Yeon
AU - Lim, Sung Yul
AU - Hélix-Nielsen, Claus
AU - Zhang, Wenjing
PY - 2023
Y1 - 2023
N2 - Photocatalytic upcycling of plastic waste is a promising approach to relieving pressure caused by solid waste, but the rational design of novel efficient photocatalysts remains a challenge. Herein, we utilize subnano-sized platinum (Pt)-based photocatalysts for plastic upcycling. A solution plasma strategy is developed to fabricate Pt-decorated Bi12O17Cl2 (SP-BOC). The Pt in an oxidant state and oxygen vacancies optimize the electronic structure for fast charge transfer. As a result, SP-BOC displays high performance for upcycling polyvinyl chloride (PVC) and polylactic acid (PLA) into acetic acid and formic acid, with yield rate and selectivity of 6.09 mg g-1 cat. h−1 and 94 %, and 48.05 mg g-1 cat. h−1 and 55.1 %, respectively. In addition, the dichlorination efficiency of PVC reaches 77.8 % within 10 h reaction, effectively reducing the environmental hazards associated with PVC waste disposal treatments. This research provides insight into the effective conversion of plastics into high-value chemicals, contributing to the reduction of carbon and toxic emissions in a practical and meaningful way, and offering a useful way for solving challenges of waste management and environmental sustainability.
AB - Photocatalytic upcycling of plastic waste is a promising approach to relieving pressure caused by solid waste, but the rational design of novel efficient photocatalysts remains a challenge. Herein, we utilize subnano-sized platinum (Pt)-based photocatalysts for plastic upcycling. A solution plasma strategy is developed to fabricate Pt-decorated Bi12O17Cl2 (SP-BOC). The Pt in an oxidant state and oxygen vacancies optimize the electronic structure for fast charge transfer. As a result, SP-BOC displays high performance for upcycling polyvinyl chloride (PVC) and polylactic acid (PLA) into acetic acid and formic acid, with yield rate and selectivity of 6.09 mg g-1 cat. h−1 and 94 %, and 48.05 mg g-1 cat. h−1 and 55.1 %, respectively. In addition, the dichlorination efficiency of PVC reaches 77.8 % within 10 h reaction, effectively reducing the environmental hazards associated with PVC waste disposal treatments. This research provides insight into the effective conversion of plastics into high-value chemicals, contributing to the reduction of carbon and toxic emissions in a practical and meaningful way, and offering a useful way for solving challenges of waste management and environmental sustainability.
KW - Solution plasma
KW - Subnano-sized Pt
KW - Upcycling of plastics
KW - Value-added chemicals
U2 - 10.1016/j.scitotenv.2023.165899
DO - 10.1016/j.scitotenv.2023.165899
M3 - Journal article
C2 - 37524171
SN - 0048-9697
VL - 902
JO - Science of the Total Environment
JF - Science of the Total Environment
M1 - 165899
ER -