Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 307, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2022.121184
Keywords
Peroxymonosulfate; Levofloxacin hydrochloride; Cobalt doping; Nickel sulfide nanoarray; Recyclable and integrated catalyst
Funding
- National Natural Science Foun-dation of China [21675127]
- Chinese Universities Scientific Fund [2452020202]
- Development Project of Qinghai Provincial Key Laboratory [2017-ZJ-Y10]
- Capacity Building Project of Engineering Research Center of Qinghai Province [2017-GX-G03]
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Most existing catalysts for sulfate radical-based advanced oxidation processes are in powder form, which often leads to difficulties in recovery and increased cost. In this study, researchers have synthesized a self-supporting cobalt-doped nickel sulfide nanosheet array on nickel foam that acts as a recyclable and integrated catalyst for peroxymonosulfate activation. This integrated catalyst is more practical in water treatment due to its separable and recyclable properties.
The existing catalysts for sulfate radical-based advanced oxidation processes (SR-AOPs) are mostly in the powder form. However, the application of powdered catalyst often leads to problems such as increased cost due to difficult recovery. In this study, an in-situ synthesized self-supporting cobalt-doped nickel sulfide nanosheet array on nickel foam (NCS/NF) is proven capable of working as a recyclable and integrated catalyst for perox-ymonosulfate (PMS) activation. This integrated catalyst is more practical in water treatment due to its separable and recyclable properties. In this study, a series of experiments show that the catalytic degradation performance of NCS/NF toward levofloxacin hydrochloride (LFX) could be comparable to most powdered catalysts. The catalytic mechanism analyses show that the incorporated cobalt plays a predominant role in enhancing PMS activation.
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