Facile synthesis of lignosulfonate-derived sulfur-doped carbon materials for photocatalytic degradation of tetracycline under visible-light irradiation

Sulfur functionalized biocarbon sorbents for low-concentration mercury isolation

“…At approximately 23° and 42°, two diffraction peaks corresponding to the (002) and (100) crystal facets are seen in amorphous carbon with low crystallinity. 48 To understand the importance of the activation agent in forming micropores, a sample was prepared from lignin in the absence of NaSCN as a control sample and named Ligsulf-0. In contrast to the activated biocarbon materials, sulfur heteroatoms block pores giving rise to a smaller surface area and pore diameter.…”

“…Compared to these reported carbon sorbents, Ligsulf-1/2 possesses the highest surface area that may possibly be the main reason for a fast Hg(II) adsorption rate. The reported sorbents showed higher q e values with higher initial concentrations 46,48 or smaller volumes for batch adsorption. 49 Furthermore, the mercury adsorption from an aqueous solution was studied by applying adsorption isotherms under equilibrium conditions to understand the adsorption process and determine the adsorption capacity of the adsorbent.…”

Ash‐Free Porous Carbon as the Negative Additive of Lead‐Acid Batteries and Supercapacitors

“…[ 19,45 ] Four peaks can be observed in Figure 3d, the peaks centered at 164.0 and 165.2 eV correspond to the S 2 p 3/2 and S 2 p 1/2 of thiophene sulfur (–C–S–C–) and the peaks centered at 168.6 and 169.9 eV are the oxygen‐containing sulfur groups (–C–SO X –C– X = 2,3,4), which are attributed to sulfones, sulfonates, and sulfates, respectively. [ 21,46,47 ]…”

“…[19,45] Four peaks can be observed in Figure 3d, the peaks centered at 164.0 and 165.2 eV correspond to the S 2p 3/2 and S 2p 1/2 of thiophene sulfur (-C-S-C-) and the peaks centered at 168.6 and 169.9 eV are the oxygen-containing sulfur groups (-C-SO X -C-X = 2,3,4), which are attributed to sulfones, sulfonates, and sulfates, respectively. [21,46,47] The electrochemical properties of carbon were tested by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS) in 1 mol L À1 H 2 SO 4 solution. The quasirectangular shape of the CV curves (Figure 4a,c) suggests the presence of electrical double-layer capacitors (EDLCs).…”

“…The abundance of micropores, mesopores, and Cycle life 1 wt% SEPC-PbO [35] 0.1C 165 (130) / EAC-In [36] / / 950 (400) 0.5 wt% BLHPC [12] 0.1C 140 (140) 56 700 (7455) 2 wt% RHAC [23] / / 5151 (347) 0.5 wt% GO-EDA [5] 0.5C 171. 47 nanosheet structures in SQFPC increases the porosity of NAM, supports electrolyte movement, and enhances NAM utilization.…”