Facile One‐Pot Solvothermal Synthesis of Noble Metal‐Free NiS Modified In₂S₃‐Based Photocatalyst for Highly Efficient Visible‐Light‐Driven Cr⁶⁺ Removal

Abstract

Rapidly electrons transferring of noble metal‐free electron mediator NiS modifying In2S3 photocatalysts were synthesized through a one‐pot hydrothermal method. Light with longer wavelength scope and stronger intensity can be absorbed and achieving more rapidly electrons transportation speed. PL and photocurrent spectra demonstrating that NiS‐In2S3 composites have higher charge carrier separation efficiency. HRTEM revealed that NiS and In2S3 were contacted in nano size and have intimate contact with each other. XPS further proved there has an influence of the banding energy between NiS and In2S3. 10 % content sample achieving complete removal of Cr6+ with a trace photocatalyst concertation (0.2 mg/mL) within 30 min which was 3 times higher than pure In2S3. The proper mechanism was proposed that In2S3 was excited by visible light to produce electron‐hole pairs, and NiS acted as a light absorbing intensifier and electron trapper conducting electrons from the In2S3 conduction band to the surface of composites and then reacting with the active species, thus improving the charge carrier separation efficiency and photocatalytic activity

Engineering the optical properties of nickel sulphide thin films by zinc integration for photovoltaic applications

“…Band gap engineering is one of the important issues to handle for material scientists, particularly dealing with the photosensitive materials. 27 Solar spectrum striking the earth constitutes ultraviolet light comprising only 4%, while visible light and infrared light comprise 50% and 46%, respectively. 27 Therefore, tuning the bandgap according to the requirement and the application is very important.…”

“… 27 Solar spectrum striking the earth constitutes ultraviolet light comprising only 4%, while visible light and infrared light comprise 50% and 46%, respectively. 27 Therefore, tuning the bandgap according to the requirement and the application is very important. Doping is an effective tool to alter the band structures of semiconducting materials.…”

Identification and ultrasensitive photoelectrochemical detection of LncNR_040117: a biomarker of recurrent miscarriage and antiphospholipid antibody syndrome in platelet-derived microparticles

“…Nevertheless, pure β-In 2 S 3 exhibits poor light utilization efficiency and photochemical stability attributed to the rapid recombination of carriers and photocorrosion that is inherent to metal sulfide semiconductors [47]. To improve the photoelectric performance of β-In 2 S 3 , breakthroughs have been made by adjusting its morphology, doping or constructing β-In 2 S 3 -based heterostructures [48,49]. Taking the above-mentioned points into account, a β-In 2 S 3 @g-C 3 N 4 nanoheterojunction-based PEC biosensor with improved light utilization efficiency and photochemical stability was generated.…”