Sunlight-active Cu/Fe@ZnWO4-kaolinite composites for degradation of acetaminophen, ampicillin and sulfamethoxazole in water

High Near-Infrared Reflective Zn1–xAxWO4 Pigments with Various Hues Facilely Fabricated by Tuning Doped Transition Metal Ions (A = Co, Mn, and Fe)

“…33 The binding energy values of Zn 2p 3/2 and Zn 2p 1/2 are detected to be at 1021.40 and 1044.40 eV, respectively, which indicates the presence of Zn 2+ ions in the Zn 0.9 Co 0.1 WO 4 compound. 20,34,35 Obvious peaks at 34.93 and 37.10 eV corresponding to W 4f 7/2 and W 4f 5/2 are rational W 4f, which are in agreement with tungsten in the common valence of +6. 36 Co 2+ can be found in this pigment through the conclusive XPS spectrum of Co 2p, which presents two peaks at 780.33 and 796.73 eV, matching Co 2p 3/2 and Co 2p 1/2 , respectively.…”

“…From Figure , it can be noted that an entire survey scan spectrum was obtained, which verified the existence of Zn 2p, Co 2p, W 4f, and O 1s after the deviation of peak positions were accurately corrected using C 1s, with a binding energy of 284.80 eV . The binding energy values of Zn 2p 3/2 and Zn 2p 1/2 are detected to be at 1021.40 and 1044.40 eV, respectively, which indicates the presence of Zn 2+ ions in the Zn 0.9 Co 0.1 WO 4 compound. ,, Obvious peaks at 34.93 and 37.10 eV corresponding to W 4f 7/2 and W 4f 5/2 are rational W 4f, which are in agreement with tungsten in the common valence of +6 . Co 2+ can be found in this pigment through the conclusive XPS spectrum of Co 2p, which presents two peaks at 780.33 and 796.73 eV, matching Co 2p 3/2 and Co 2p 1/2 , respectively. , The Co 2p peaks that are very weak may be attributed to the low content of Co 2+ , and the results of inductively coupled plasma emission spectrometer (ICP) test confirmed that the doping efficiency was 14.60%, relatively close to the theoretical value of 10%.…”

Thermally-treated MgO/nanocrystalline cellulose immobilized onto a Santa Barbara-16 mesoporous SiO2 template for the sequestration of antibiotics from polluted water

“…1,57,58 This is because AMP molecules exist in the cationic form at pH below the isoelectric point of ca. 5.46; 59 meanwhile, at these pH levels, the surface of the adsorbents with average pHPZC of ca. 9.0 are also positively charged.…”

A review on the versatility of Carica papaya seed: an agrogenic waste for the removal of organic, inorganic and microbial contaminants in water

“…The authors reported that in the hybrid system the AMP molecule was the most degraded, with efficiency >98%. A further study was performed to ascertain the reusability of the composite, and it proved to be stable even after five cycles, showing it to be a sustainable and efficient material 71 . In a similar study, a solar‐active photocatalyst, TZPP 5 , was prepared from kaolinite clay, sodium tungstate, titanium dioxide and biomass, and used to investigate the photocatalytic degradation of ampicillin (AMP), sulfamethoxazole (SMX) antibiotics and the antimalarial drug artemether (ART).…”

“…CPS, an agricultural waste product from pawpaw, has been explored as an adsorbent (activated carbon) 50 or component of composites used either as adsorbents or photocatalysts for the removal of contaminants in water. CPS has been extensively used as an efficient adsorbent for the purification of water polluted by dyes, 50,67‐70 pharmaceuticals, 71‐73 heavy metals 74‐77 and anions 48 . Despite the abundance of research studies on the use of CPS in the remediation of environmental contaminants, there is a lack of recent comprehensive reviews on the subject.…”