Preparation of a novel composite comprising biochar skeleton and “chrysanthemum” g-C3N4 for enhanced visible light photocatalytic degradation of formaldehyde

Photocatalytic Air Purification Using Functional Polymeric Carbon Nitrides

“…[ 322,323 ] It can degrade VOC to low‐toxicity products (carbon dioxide (CO 2 ) and water (H 2 O)) without generating other harmful by‐products at ambient temperature, which promotes long‐term environmental protection. [ 324,325 ]…”

“…In addition, the activated carbon and porous materials can physically adsorb the gaseous HCHO to reduce the concentration of the indoor/outdoor HCHO. [ 325,353–356 ] However, its application is inadequate and limited because of the capability and the adsorption/desorption rate, and the lifetime of light‐excited charges. To address the above shortcomings of the activated carbon, the combination of PCN photocatalysts and activated carbon was used to improve the efficiency of the HCHO removal.…”

“…Reproduced with permission. [ 325 ] Copyright 2019, Elsevier. C) A schematic illustration of the facet coupled effect and electron–hole pair separation of the composite.…”

Three-dimensional microspheric g-C3N4coupled byBroussonetia papyriferabiochar: facile sodium alginate immobilization and excellent photocatalytic Cr(iv) reduction

“…20 Biochar, a carbonaceous solid with excellent adsorption ability, is obtained by high-temperature anaerobic pyrolysis of biomass and is used in composites with g-C 3 N 4 to realize more efficient visible light adsorption, faster electron transfer, slower electron-hole recombination, and higher surface area. 21,22 Yan et al ascribed the enhanced photocatalytic performance of carbon/g-C 3 N 4 composites to the high electron conductivity of residual carbon, while Li et al prepared biochar-coupled g-C 3 N 4 from Camellia oleifera shells and melamine, revealing that these composites feature an increased Cr(VI) adsorption capacity and reduction ability due to their large specic surface area and superior electron conduction. 23,24 Broussonetia papyrifera, a deciduous tree mainly found in Asian countries such as China and Japan, exhibits the advantages of fast growth, easy proliferation, and great disease resistance, which makes the utilization of its fallen leaves (e.g., by pyrolysis) a task of high practical importance.…”

Photocatalytic Treatment of Pharmaceuticals in Real Hospital Wastewaters for Effluent Quality Amelioration

“…Except for the most commonly used photocatalyst TiO 2 -P25, other semiconductors, such as graphitic carbon nitride (g-C 3 N 4 ) or titanate perovskites ATiO 3 (A = Ca, Sr, Ba, etc. ), have been proven to induce the efficient elimination of organic pollutants [11][12][13][14][15][16][17][18]. TiO 2 -P25 is a photocatalyst that has been widely used in many photocatalytic applications [19][20][21][22][23][24][25][26][27][28][29].…”