Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study on the preparation of nanosulfur/bentonite complex   Inorganic compounds with sulfur have a good antifungal efficacy. However
there is a limit, sulfur is required in bulk quantities for application.
Nanosulfur might have a high anti-bacterial effect in a thin concentration.
Nanosulfur-bentonite composite was prepared from nanosulfur made by the
reaction between sodium thiosulfate and sulfuric acid and bentonite was used as
a carrier. The most appropriate reaction temperature, concentrations of Na2S2O3
5H2O and H2SO4, dropping rate and stirring one were determined. From SEM
images, it was illuminated that small particle size of nanosulfur deposited on
bentonite is in the range of 20-30nm and big one is in the range of 60-100nm.

37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol