Synthesis of Tunable Band Gap Semiconductor Nickel Sulphide Nanoparticles: Rapid and Round the Clock Degradation of Organic Dyes

Molla, Aniruddha; Sahu, Meenakshi; Hussain, Sahid

doi:10.1038/srep26034

Cited by 115 publications

(53 citation statements)

References 61 publications

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“…The incorporation of NiO and NiS into the Fe 3 O 4 @PPY support inhibited the charge carrier transition and recombination of electron/hole leading to lower photoluminescence emission. Similar results were reported by Habibi‐Yongjeh who studied photoluminescence of nanocomposites and reported that by incorporation of g‐C 3 N 4 into Ag 2 SO 4 and Fe 3 O 4 /AgI/Ag 2 CrO 4 nanocomposite, the photoluminescence intensity of g‐C 3 N 4 was significantly decreased.…”

Section: Resultssupporting

confidence: 89%

Visible Light Degradation of Naproxen by Enhanced Photocatalytic Activity of NiO and NiS, Scavenger Study and Focus on Catalyst Support and Magnetization

Torki

Faghihian

2018

Photochem & Photobiology

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This research was aimed to prepare a magnetically photocatalyst enabling to degrade pharmaceutical wastewater and detoxification of pollutant such as naproxen, by visible light irradiation. The nano-sized NiS and NiO photocatalysts exhibit higher reactivity than their microsized counterparts, but separation of the used photocatalyst from the degradation solution is hard and imperfect. To remove this difficulty, magnetic polypyrrole core-shell (Fe O @PPY) was synthesized and employed as catalyst support. The magnetization property of the synthesized photocatalysts measured by VSM technique indicated that the photocatalysts were sufficiently magnetized to be readily separated from degradation solution by use of external magnetic field. The DRS study showed that the band gap of the photocatalysts shifted to lower energy after immobilization on the support materials leading to higher degradation efficiency. The optimal efficiency was obtained with the catalysts loaded with 50% of NiO and 50% of NiS. The augmenting effect of H O and the inhibition influence of some organic and inorganic compounds on the degradation process were studied. Regeneration of the used photocatalyst was performed by heat treatment, and the catalyst treated at 400°C retained most of its initial capacity. The degradation capacity was kinetically fast, and the equilibrium was attained within 30 min.

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Section: Resultssupporting

confidence: 89%

Visible Light Degradation of Naproxen by Enhanced Photocatalytic Activity of NiO and NiS, Scavenger Study and Focus on Catalyst Support and Magnetization

Torki

Faghihian

2018

Photochem & Photobiology

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“…Ag-In-Ni-S nanocomposites with a W 2 /W 1 value of 0.0022 degraded 98% MB in 12 min41. NiS nanoparticles with a W 2 /W 1 value of 0.0089 degraded 100% MB in 15 min42. CuS caved superstructure with a W 2 /W 1 value of 0.01 degraded 100% MB in 15 min with the help of hydrogen peroxide43.…”

Section: Resultsmentioning

confidence: 99%

CuMnOS Nanoflowers with Different Cu+/Cu2+ Ratios for the CO2-to-CH3OH and the CH3OH-to-H2 Redox Reactions

Chen

Abdullah

Kuo

2017

Sci Rep

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A conservative CO2-Methanol (CH3OH) regeneration cycle, to capture and reutilize the greenhouse gas of CO2 by aqueous hydrogenation for industry-useful CH3OH and to convert aqueous CH3OH solution by dehydrogenation for the clean energy of hydrogen (H2), is demonstrated at normal temperature and pressure (NTP) with two kinds of CuMnOS nanoflower catalysts. The [Cu+]-high CuMnOS led to a CH3OH yield of 21.1 mmol·g−1catal.·h−1 in the CuMnOS-CO2-H2O system and the other [Cu+]-low one had a H2 yield of 7.65 mmol·g−1catal.·h−1 in the CuMnOS-CH3OH-H2O system. The successful redox reactions at NTP rely on active lattice oxygen of CuMnOS catalysts and its charge (hole or electron) transfer ability between Cu+ and Cu2+. The CO2-hydrogenated CH3OH in aqueous solution is not only a fuel but also an ideal liquid hydrogen storage system for transportation application.

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“…Significant resultsf rom the photoinduced electron-storage mechanisms further led to the development of new and modified systems, such as TiO 2Àx N x /NiO bilayer thin films, [34] WO 3 , [35] TiO 2 -SWCNT (SWCNT = single-walled carbon nanotubes), [36] AgÀTiO 2 , [37] PtÀWO 3 ,C u II ÀWO 3 , [38] Ni(OH) 2 -coupled N-doped TiO 2 ,F e II ÀTiO 2 ,C u II ÀWO 3 ,P t ÀWO 3 , [39] hydrogen-treated PtÀ WO 3 , [40] Cu 2 O/TiO 2 , [41] AgÀInÀNiÀSn anocomposites, [42] H:PtÀ WO 3 /TiO 2 ÀAu nanospheres, [43] TiO 2 /SiO 2 /MnO x , [44] SnO 2 -decorated Cu 2 O, [45] TiO 2 ÀNiO/TiO 2 film, [46] graphitic carbon nitride (g-C 3 N 4 )/carbon nanotubes (CNTs)/graphene (Gr), [47] modified carbon nitride, [48] AuÀZnO, [49] Pt-loaded TiO 2 /CeO 2 /SiO 2 [50] AgÀ ZnO, [51] NÀTiO 2 , [52] metal-organic frameworks on Au/TiO 2 , [53] nickel sulfide, [54] Ag-modified PCs, [55] ZnO 2 /polypyrrole, [56] and Rh/Au-modified Al 2 O 3 , [57] and studied for their day-nightp hotocatalytic properties, as discussed in the following sections.…”

Section: Prospective Materialsmentioning

confidence: 99%

Materials and Mechanisms of Photo‐Assisted Chemical Reactions under Light and Dark Conditions: Can Day–Night Photocatalysis Be Achieved?

Sakar

Nguyen

et al. 2018

ChemSusChem

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The photoassisted catalytic reaction, conventionally known as photocatalysis, is expanding into the field of energy and environmental applications. It is widely known that the discovery of TiO2‐assisted photochemical reactions has led to several unique applications, such as degradation of pollutants in water and air, hydrogen production through water splitting, fuel conversion, cancer treatment, antibacterial activity, self‐cleaning glasses, and concrete. These multifaceted applications of this phenomenon can be enriched and expanded further if this process is equipped with more tools and functions. The term “photoassisted” catalytic reactions clearly emphasizes that photons are required to activate the catalyst; this can be transcended even into the dark if electrons are stored in the material for the later use to continue the catalytic reactions in the absence of light. This can be achieved by equipping the photocatalyst with an electron‐storage material to overcome current limitations in photoassisted catalytic reactions. In this context, this article sheds lights on the materials and mechanisms of photocatalytic reactions under light and dark conditions. The manifestation of such systems could be an unparalleled technology in the near future that could influence all spheres of the catalytic sciences.

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Synthesis of Tunable Band Gap Semiconductor Nickel Sulphide Nanoparticles: Rapid and Round the Clock Degradation of Organic Dyes

Cited by 115 publications

References 61 publications

Visible Light Degradation of Naproxen by Enhanced Photocatalytic Activity of NiO and NiS, Scavenger Study and Focus on Catalyst Support and Magnetization

Visible Light Degradation of Naproxen by Enhanced Photocatalytic Activity of NiO and NiS, Scavenger Study and Focus on Catalyst Support and Magnetization

CuMnOS Nanoflowers with Different Cu+/Cu2+ Ratios for the CO2-to-CH3OH and the CH3OH-to-H2 Redox Reactions

Materials and Mechanisms of Photo‐Assisted Chemical Reactions under Light and Dark Conditions: Can Day–Night Photocatalysis Be Achieved?

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