Zhaofeng Chang's research while affiliated with Kunming University of Science and Technology and other places

... The exposure of TCS to UV-C and solar light induces its photodegradation, resulting in the formation of various degradation byproducts. Several studies have indicated that, under an UV-C irradiation wavelength of 254 nm, three primary byproducts are typically generated: 2,4-DCP, a quinone, and a hydroquinone [33,34]. ...

... However, only NASMX significantly reduced xanthosine levels by 24 % relative to the control. Nucleotide metabolism is vulnerable to exposure to organic contaminants in plants (Hao et al., 2023). Under oxidative stress, DNA damage is a frequent occurrence, and DNA repair mechanisms are activated to alleviate this damage in plants (Li et al., 2020b). ...

... Previous research [46][47][48] has found a strong relationship between the O/C molar ratio and biochar half-life, demonstrating that different O/C ratio ranges correspond to varied half-life durations. According to the International Biochar Initiative (IBI), biochars with O/C ratios less than 0.2 are thought to be extremely stable and have a half-life of more than 1000 years [48][49][50]. With half-life ranging from 100 to 1000 years, biochars with O/C ratios between 0.2 and 0.6 are thought to be moderately stable. ...

... Considering this, biochar has emerged as a carbonbased material for successful Cr(VI) removal, because of its low-cost and presence of numerous functional groups on the surface [20,21]. Biochar has been widely applied as a potential biosorbent to eradicate poisonous heavy metal ions (arsenic, lead or cadmium) from contaminated water [22,23]. The heavy metals removal mechanism by biochar usually includes complexation with functional groups, physical sorption, ion exchange and surface precipitation [24]. ...

... The catechol 2,3dioxygenase pathway converts catechol into 2oxo-3-hexenedioate and succinate (Han et al., 2023). Lastly, some bacteria can use the phenol hydroxylase pathway, which converts phenol into phenol-2-monooxygenase and then into catechol (Yu et al., 2023). ...

... The corresponding TEM and HRTEM images further confirmed that Cu was reduced to Cu 0 by the derived carbon, and the catalyst particles were grown in situ and dispersed on the surface of the framework (Fig. 2e-h). The lattice fringes (Fig. 2f, h) with d-spacing of 0.208 nm corresponded to the (1 1 1) plane of Cu 0 , and the lattice fringes with dspacing of 0.252 nm, 0.296 nm and 0.483 nm corresponded to the (3 1 1), (2 2 0) and (1 1 1) faces of CuFe 2 O 4 [29], respectively. ...

... The low WEOM concentration in Lake Baiyangdian (0.47-5.62 g/kg, 1.61%-9.35%) may be related to the abundance of microorganisms in the water and in the shoreline soil ( Yuan et al., 2014 ;Wang et al., 2022b ;Zhang et al., 2023a ). This change may be caused by the annual water transfer projects implemented in Lake Baiyangdian, which further accelerate the growth and reproduction of microorganisms. ...

... Further, our observed PBDE and bis (2-ethyl hexyl) tetrabromophthalate (BEH-TEBP) concentrations were one to two orders of magnitude lower than those found in floor dust (no e-waste recycling or dismantling activities were conducted in the areas where floor dust was collected) of a Canadian e-waste facility . When comparing with other facilities where e-waste was dismantled or recycled, indoor dust concentrations of PBDEs observed in this study were also considerably lower than those reported inside both regulated and unregulated e-waste recycling facilities in China Zheng et al., 2015;Zhou et al., 2022), Vietnam (Wannomai et al., 2020), and Canada . Moreover, concentrations of 1,2-bis (2,4,6-tribromophenoxy) ethane (BTBPE), BEH-TEBP, and DBDPE in indoor dust inside Facility #1 were at the lower end of those observed in regulated e-waste recycling facilities in Canada and in unregulated e-waste recycling facilities in China Zheng et al., 2015) and Vietnam (Wannomai et al., 2020). ...

... The Co-based bimetallic catalysts with spinel structure have shown great potential in PMS activation owing to their favorable electron transfer properties promoted by self-redox cycle [7][8][9]. Especially, ZnCo 2 O 4 revealed low flat band potential and high position of Fermi level, leading to superior catalytic activity for PMS. ...

... Moreover, the magnetic biochar-Fe 3 O 4 composite material achieved an impressive 96.73% degradation rate for Bisphenol A in the reaction system by employing both free radical and non-free radical pathways, surpassing the removal rates of single biochar (6.98%) or Fe 3 O 4 (21.59%) 71 . Similarly, another magnetic biochar-FeS composite fabricated via ball milling employed biochar as an electron transport medium and utilized surfbonded Fe(II) and S(II) to achieve tetracycline degradation within just 30 min 72 , yielding comparable results as reported by ref. 72 . ...