Pd clusters anchored on defect-rich graphene enable efficient catalytic reduction of organic dyes in flow
(2025) In Rare Metals 44(7). p.4679-4690- Abstract
Taking advantage of the relatively automatic and easy operation procedure, continuous-flow catalysis has become a promising wastewater treatment technique for organic dye removal. However, developing suitable packing catalysts with favorable activity and low flow resistance remains a challenging task for the construction of continuous-flow catalytic systems. In this paper, we report the preparation of a catalytic module, in which palladium clusters (PdC) are incorporated on defect-rich nitrogen-doped holey graphene (NHG) co-assembled with aluminum silicate fibers (ASFs) (PdC/NHG-ASFs). The resultant PdC/NHG-ASFs composite catalyst exhibits an assembly morphology and can be facilely integrated into a... (More)
Taking advantage of the relatively automatic and easy operation procedure, continuous-flow catalysis has become a promising wastewater treatment technique for organic dye removal. However, developing suitable packing catalysts with favorable activity and low flow resistance remains a challenging task for the construction of continuous-flow catalytic systems. In this paper, we report the preparation of a catalytic module, in which palladium clusters (PdC) are incorporated on defect-rich nitrogen-doped holey graphene (NHG) co-assembled with aluminum silicate fibers (ASFs) (PdC/NHG-ASFs). The resultant PdC/NHG-ASFs composite catalyst exhibits an assembly morphology and can be facilely integrated into a glass reactor to construct an efficient fixed-bed system for continuous-flow catalysis. The corresponding catalytic system demonstrates high processing capacity and excellent durability for the reduction of six N-containing organic dyes owing to the robust hierarchical structure and dual-active components (i.e., NHG and PdC) of the PdC/NHG-ASFs composite. The processing rate of the fixed-bed system constructed with the PdC/NHG-ASFs catalyst for the reduction of a representative dye (i.e., 4-nitrophenol) was 1.45 × 10−3 mmol·mg−1·min−1, surpassing those previously reported for systems based on metal catalysts. Theoretical calculations show that the activity enhancement in nitroarene reduction reaction originate from the synergistic effect of the two active components. The integration of heterogeneous catalysis and flow-chemistry techniques provides a rational design concept for environmental catalysis, offering a more efficient, scalable, and sustainable approach.
(Less)
- author
- Bi, Zhuo Yuan ; Li, Shuo ; Dai, Jian Hong ; Yang, Lei ; Liu, Pei LU ; Xi, Jiang Bo and Peng, Xiang
- organization
- publishing date
- 2025-07
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Composite catalyst, Continuous-flow catalysis, Metal cluster, Organic dye, Reduction reaction
- in
- Rare Metals
- volume
- 44
- issue
- 7
- pages
- 12 pages
- publisher
- Springer International Publishing
- external identifiers
-
- scopus:86000735745
- ISSN
- 1001-0521
- DOI
- 10.1007/s12598-024-03222-6
- language
- English
- LU publication?
- yes
- id
- 94c12edc-f623-4339-a549-a1eda5b83c2a
- date added to LUP
- 2025-06-27 12:12:43
- date last changed
- 2025-06-27 12:14:06
@article{94c12edc-f623-4339-a549-a1eda5b83c2a,
abstract = {{<p>Taking advantage of the relatively automatic and easy operation procedure, continuous-flow catalysis has become a promising wastewater treatment technique for organic dye removal. However, developing suitable packing catalysts with favorable activity and low flow resistance remains a challenging task for the construction of continuous-flow catalytic systems. In this paper, we report the preparation of a catalytic module, in which palladium clusters (Pd<sub>C</sub>) are incorporated on defect-rich nitrogen-doped holey graphene (NHG) co-assembled with aluminum silicate fibers (ASFs) (Pd<sub>C</sub>/NHG-ASFs). The resultant Pd<sub>C</sub>/NHG-ASFs composite catalyst exhibits an assembly morphology and can be facilely integrated into a glass reactor to construct an efficient fixed-bed system for continuous-flow catalysis. The corresponding catalytic system demonstrates high processing capacity and excellent durability for the reduction of six N-containing organic dyes owing to the robust hierarchical structure and dual-active components (i.e., NHG and Pd<sub>C</sub>) of the Pd<sub>C</sub>/NHG-ASFs composite. The processing rate of the fixed-bed system constructed with the Pd<sub>C</sub>/NHG-ASFs catalyst for the reduction of a representative dye (i.e., 4-nitrophenol) was 1.45 × 10<sup>−3</sup> mmol·mg<sup>−1</sup>·min<sup>−1</sup>, surpassing those previously reported for systems based on metal catalysts. Theoretical calculations show that the activity enhancement in nitroarene reduction reaction originate from the synergistic effect of the two active components. The integration of heterogeneous catalysis and flow-chemistry techniques provides a rational design concept for environmental catalysis, offering a more efficient, scalable, and sustainable approach.</p>}},
author = {{Bi, Zhuo Yuan and Li, Shuo and Dai, Jian Hong and Yang, Lei and Liu, Pei and Xi, Jiang Bo and Peng, Xiang}},
issn = {{1001-0521}},
keywords = {{Composite catalyst; Continuous-flow catalysis; Metal cluster; Organic dye; Reduction reaction}},
language = {{eng}},
number = {{7}},
pages = {{4679--4690}},
publisher = {{Springer International Publishing}},
series = {{Rare Metals}},
title = {{Pd clusters anchored on defect-rich graphene enable efficient catalytic reduction of organic dyes in flow}},
url = {{http://dx.doi.org/10.1007/s12598-024-03222-6}},
doi = {{10.1007/s12598-024-03222-6}},
volume = {{44}},
year = {{2025}},
}