Composites of W₁₈O₄₉ Nanowires with g-C₃N₄/RGO Nanosheets for Broadband Light-Driven Photocatalytic Wastewater Purification

Toward Enhancing Photocatalytic Rate by Tunable Bandgap and Oxygen Vacancy on 2D g-C3N4/WO3–x Z-Scheme Heterojunction Nanocomposites

“…Figure C displays the high-resolution C1 s spectra regarding 2D g-C 3 N 4 and 2D g-C 3 N 4 /WO 3– x . The peaks at 284.8 and 288.1 eV were formed, respectively, from graphitic carbon–carbon bonds and sp 2 -bonded carbons of N–CN in typical aromatic CN heterocycles . For the N 1 s spectrum, peaks at 398.5, 399.7, and 401.0 eV are, respectively, formed by NC–N in N–C and C–N–H (or C–NH 2 ) of g-C 3 N 4 (Figure D) .…”

“…Nevertheless, the primary hurdle lies in enhancing the electron–hole pair yield and mitigating nanocomposites’ electron–hole recombination, which involves tactics like selecting photosensitizers, engineering energy bands, modifying surfaces, and employing techniques such as cocatalyst loading and heterostructure construction . Excitingly, bandgap and vacancy engineering are widely regarded as the most promising two strategies for enhancing photocatalytic rates. − However, the widespread application of these technologies is constrained by the bandgap edge mismatch and poor vacancy activity in photocatalytic reactions. − To address the aforementioned shortcomings, regulating the bandgap edge and constructing oxygen vacancies (O V s) have emerged as effective methods. , Therefore, meticulous design of both the bandgap edge and the structure of O V s in the catalyst helps establish an optimal Z -scheme heterojunction nanocomposite, offering a promising avenue for efficient wastewater purification …”

Photocatalytic Degradation of Tetracycline Hydrochloride Based on the Structure–Property Exploration of BiOCl

“…However, these complex molecules are difficult to degrade in the environment, and the TC-HCl-contained wastewater from hospital and pharmaceutical industries would cause severe environmental and ecological pollution. Among the various techniques used for TC-HCl removal from wastewater, the photodegradation technique is of great interest due to its sustainable and cost-effective features. − Basically, solar light was used to excite photocatalysts to generate electron/hole couples, which then lead to highly reactive oxygen species (ROS) and degrade TC-HCl into nontoxic molecules. − BiOCl is one of the most promising photocatalysts for water remediation. − Its unique layered structure (Cl–O–Bi–O–Cl) constructs internal electric field along the [001] direction . which could facilitate the separation of photogenerated electrons and holes.…”

Floatable Cu2(OH)PO4/rGO Aerogel for Full Spectrum Driven Photocatalytic Degradation of Organic Pollutants

“…The visible (vis, 400–700 nm) and near-infrared (NIR, 700–2500 nm) regions occupy approximately 95% of the solar spectrum . In this regard, great efforts have been paid to expand the light-harvesting range for maximizing solar light utilization. , Construction of heterostructures with a tunable bandgap has been proven to be an effective strategy for achieving wide-range light absorption. Plenty of heterostructures such as Au/TiO 2 , TiO 2 @MIL-101, and ZnO/g-C 3 N 4 have successfully expanded the light absorption region from UV to visible region.…”