Single metal atom oxide anchored Fe3O4-ED-rGO for highly efficient photodecomposition of antibiotic residues under visible light illumination

Selvakumar, Karuppaiah; Wang, Yueshuai; Lu, Yue; Tian, Bohai; Zhang, Zeyu; Hu, Jingcong; Raja, A.; Arunpandian, M.; Swaminathan, Madhavan; Dai, Hongxing; Sui, Manling

doi:10.1016/j.apcatb.2021.120740

Cited by 34 publications

(7 citation statements)

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“…The large amount of superoxide radical (O 2 • − ) produced by SMAO catalyst in visible light photocatalytic reaction is the direct reason that it can degrade ciprofloxacin and ibuprofen efficiently. [ 190 ] Compared with the related reports of photocatalytic organic drugs in recent years, [ 146,185 ] the W 1 V 1 /Fe 3 O 4 SMAO catalyst developed in this work has the highest degradation efficiency of ciprofloxacin and ibuprofen, providing a new idea for the development of single‐metal‐site photocatalyst for the efficient degradation of organic drug pollutants.…”

Section: Heterogeneous Catalysis Applications Of Afcsmentioning

confidence: 91%

“…The synergistic effects between high-density single atoms (e.g., Fe, Co, Mo, W, and Au) and above supports can effectively improve the capturing capacity of visible light, the binding energy with oxygen, and the charge separation behavior, thus promoting the surface reactions of catalytic oxidation (see Figure 18 and Table 3 for details). [176,[188][189][190][191] In 2018, Guo and co-workers reported a g-C 3 N 4 -supported single atom Fe catalyst (I-FeN x /g-C 3 N 4 -5) with a high density A-C) Reproduced with permission. [188] Copyright 2018, American Chemical Society.…”

Section: Photocatalytic Degradation Of Organic Pollutantsmentioning

confidence: 99%

“…In the above section, we have introduced the high-density AFC design and photocatalytic applications of different noble metals (such as Pt, [56,[166][167][168][169] Ag, [164,165] Au [191] ) and different transition metal (such as Cu, [52,57,175] Co, [150,176] Fe, [188] Mo, [189] Zn, [177] Sb [174] ) single-atom structures on diversified photoactive materials (such as g-C 3 N 4 , [57,150,164,165,174,176,188,189] MOFs, [52,192] TiO 2 , [168,191] Fe 3 O 4 , [190] BiVO 4 , [169] NC [176,177] ). Generally, the ultrahigh-density single-dispersed metal-active sites can effectively promote the migration of photogenerated carriers, localize photogenerated electrons, and change the band structure of the substrate materials.…”

Section: Brief Summary Of Afcs On Photocatalysismentioning

confidence: 99%

“…The synergistic effects between high‐density single atoms (e.g., Fe, Co, Mo, W, and Au) and above supports can effectively improve the capturing capacity of visible light, the binding energy with oxygen, and the charge separation behavior, thus promoting the surface reactions of catalytic oxidation (see Figure and Table 3 for details). [ 176,188–191 ]…”

Section: Heterogeneous Catalysis Applications Of Afcsmentioning

confidence: 99%

“…Sui and co‐workers reported a novel W 1 V 1 (W–O 3 /V–O 2.5 ) single‐metal atom oxide (SMAO)–Fe 3 O 4 catalyst for highly efficient photocatalytic degradation of antibiotic residues (ciprofloxacin and ibuprofen) (see Figure 18I–L). [ 190 ] The W and V elements in the catalyst are anchored on the surface of Fe 3 O 4 in the form of SMAO, and W element occupied the position of Fe 2+ in Fe 3 O 4 , which greatly enhanced the separation ability of photoelectron–hole pair and improved bandgap of the catalyst (see Figure 18I,J). The W 1 V 1 /Fe 3 O 4 SMAO catalyst showed high efficiency (89% degradation after 90 min irradiation and apparent rate constant k of 0.0454 min −1 ) and high stability (presents a slight decrease after 6 run recycles) of the photodegradation of ciprofloxacin (see Figure 18K,L).…”

Section: Heterogeneous Catalysis Applications Of Afcsmentioning

confidence: 99%

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Emerging Ultrahigh‐Density Single‐Atom Catalysts for Versatile Heterogeneous Catalysis Applications: Redefinition, Recent Progress, and Challenges

Liao

et al. 2022

Small Structures

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In recent years, single‐atom catalysts (SACs) with high metal loading have emerged in different heterogeneous catalysis fields and shown extraordinary catalytic properties. When there are enough coordination atoms (or functional groups) on the supports, it is possible to achieve a limit monolayer atom loading on the surface of supports with ultrahigh atom density (5–15 atoms nm−2) and extremely close site distance (0.2–0.5 nm), by using appropriate synthesis methods and procedures. These high‐density metal atoms usually have no or less metal bonds, which are mostly isolated by support atoms to form 3D foam‐like atomic constructions. Herein, a new notion of metal atomic foam catalysts (AFCs) is propsed to redefine these ultrahigh‐density SACs accommodated by specific supports. This new paradigm of 3D atomic construction for SACs has potential significance for both theoretical research and industrial applications. The latest major advancements in the controllable synthesis of AFCs on various supports (e.g., polymer, carbon, and metallic compound) via different methods (bottom‐up or top‐down approaches) are summarized. The latent catalytic principles and typical application cases of AFCs are emphasized in a wide range of heterogeneous catalysis fields (e.g., thermocatalysis, photocatalysis, electrocatalysis, etc.). The challenges and prospects of this newly 3D ultrahigh‐density AFCs materials in practical industrial application are pointed out as well.

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Section: Heterogeneous Catalysis Applications Of Afcsmentioning

confidence: 91%